TDA8295HN/C1 NXP Semiconductors, TDA8295HN/C1 Datasheet
TDA8295HN/C1
Specifications of TDA8295HN/C1
Available stocks
Related parts for TDA8295HN/C1
TDA8295HN/C1 Summary of contents
Page 1
TDA8295 Digital global standard low IF demodulator for analog TV and FM radio Rev. 01 — 4 February 2008 1. General description The TDA8295 is an alignment-free digital multistandard vision and sound low IF signal PLL demodulator for positive and ...
Page 2
... NXP Semiconductors I Gated IF AGC acting on black level by using H/V PLL or peak IF AGC (I selectable) I Internal digital logarithmic IF AGC amplifier with gain and 68 dB control range I Peak search tuner IF AGC for optimal adaptive drive of the IF ADC I Switchable IF PLL and IF AGC loop bandwidths ...
Page 3
... NXP Semiconductors 4. Quick reference data Table 1. Quick reference data Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter ...
Page 4
... NXP Semiconductors Table 1. Quick reference data Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter ...
Page 5
... NXP Semiconductors Table 1. Quick reference data Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter ...
Page 6
GATED AGC DETECTOR AND INTEGRATOR FILTERS low PLL AND signal ADC DEMODULATOR AGC AMPLIFIER PEAK DETECTOR AND INTEGRATOR CLOCK tuner BIT STREAM PROCESSOR IF AGC DAC AND PLL crystal or frequency reference Fig 1. Functional diagram of ...
Page 7
... NXP Semiconductors 7. Pinning information 7.1 Pinning Fig 2. Pin configuration for HVQFN40 Table 3. Pin TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio terminal 1 index area 1 IF_POS IF_NEG DDA(ADC)(3V3 DDD1(1V2 SSD1 i. DDA(PLL)(1V2) 8 XIN XOUT SSA(PLL) ...
Page 8
... NXP Semiconductors Table 3. Pin 7.2 Pin description Table 4. Pin description Symbol Pin Type Reset RST_N 21 I Reference XIN 8 I XOUT C-bus SDA 29 I/O, OD SCL 28 I SADDR0 19 I SADDR1 C-bus feed-through switch or GPIO GPIO2/SDA_O 31 I/O, OD GPIO1/SCL_O 32 I/O, OD V-sync or GPIO GPIO0/VSYNC 33 I/O, OD Tuner IF AGC ...
Page 9
... NXP Semiconductors Table 4. Pin description …continued Symbol Pin Type Boundary scan TMS 24 I TRST_N 30 I TCK 27 I TDI 23 I TDO 22 O ADC IF_POS 1 AI IF_NEG 2 AI DAC V_IOUTP 14 AO V_IOUTN 13 AO S_IOUTP 17 AO S_IOUTN 16 AO RSET 11 I Supplies and grounds V 15 ...
Page 10
... NXP Semiconductors [2] The pin types are defined in Table Table 5. Type AI AO GND I I Functional description 8.1 IF ADC The low IF spectrum (1 MHz to 10 MHz) from the Silicon Tuner TDA8725A or TDA1827x is fed symmetrically to the 12-bit IF ADC of the TDA8295, where it is sampled with 54 MHz or 27 MHz. All the anti-aliasing filtering is already done in the Silicon Tuner. ...
Page 11
... NXP Semiconductors Next comes the equalizer circuit to remove the transmitter group delay predistortion. A video leveling stage follows, which brings the output within the SCART specification ( 3dB overall), despite heavy overmodulation. The response time is made very slow. Finally, a video equalizer allows to compensate the perhaps non-flat frequency response from the tuner or to change the overall video response according to customer wish (i ...
Page 12
... NXP Semiconductors The above wideband, slowly acting AGC loop (uncorrelated first-order integral action closed via the continuous tuner IF AGC amplifier in the Silicon Tuner via a bit stream DAC (PWM signal at 13.5 MHz, 27 MHz or 54 MHz) and an external and uncritical first-order RC low-pass. ...
Page 13
... NXP Semiconductors 9.1.1 Write mode S start Fig 3. I Table Table 7. Field S Byte 1 A Byte 2 A Byte Byte start a. Address 84h, write 02h in register 01h S start b. Address 84h, write 05h in register 02h and 04h in register 03h Fig 4. Examples I TDA8295_1 Product data sheet ...
Page 14
... NXP Semiconductors 9.1.2 Read mode S BYTE 1 A start address 0 ack 2 Fig 5. I C-bus Read mode 2 Table 8. I C-bus transfer description Field Bit S - Byte and Byte Byte and Byte Byte BYTE 1 A BYTE 2 start 1000 0100 ack 0000 0010 Address 84h, read register 02h with value 05h and read register 03h with value 04h 2 Fig 6 ...
Page 15
... NXP Semiconductors 9.2 Register overview The TDA8295 internal registers are accessible by means of the I described in the register description can be found in TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio Section 9.1. In Table 9 and Table 10 Section Rev. 01 — 4 February 2008 ...
Page 16
Table 9. I C-bus registers Index Name 7 (MSB) 6 00h STANDARD STANDARD[7:0] 01h EASY_PROG - - 02h DIV_FUNC AGC_SEL AGC_TRI 03h ADC_HEADR - - 04h PC_PLL_FUNC PC_PLL_BW[4:0] 05h PC_PLL_THRES - - 06h PC_PLL_WGT PHASE_PER PHASE_GAIN[6:0] 07h PC_FLL_FUNC FLL_ON ...
Page 17
Table 9. I C-bus registers …continued Index Name 7 (MSB) 6 1Eh CVBS_LEVEL CVBS_LVL[7:0] 1Fh CVBS_EQ CVBS_EQ[7:0] 20h SOUNDSET_1 - AM_FM_SND[1:0] 21h SOUNDSET_2 - - 22h SOUND_LEVEL - - 23h SSIF_LEVEL - - 24h ADC_SAT ADC_SAT[7:0] 25h AFC AFC[7:0] ...
Page 18
Table 9. I C-bus registers …continued Index Name 7 (MSB) 6 3Fh PLL_REG07 - 0 40h PLL_REG08 MSEL[7:0] 41h PLL_REG09 NSEL[6:0] 42h PLL_REG10 0 0 43h XTALOSC_CTL - - 44h GPIOREG_0 GP1_CF[3:0] 45h GPIOREG_1 I2CSW_EN I2CSW_ON 46h GPIOREG_2 CLK_INV_GP2 ...
Page 19
... NXP Semiconductors Table 10. Index 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h 12h 13h 14h 15h 16h 17h 18h 19h 1Ah 1Bh 1Ch 1Dh 1Eh 1Fh 20h 21h 22h 23h 24h ...
Page 20
... NXP Semiconductors Table 10. Index 29h 2Ah 2Bh to 2Eh 2Fh 30h 31h 32h 33h 34h 35h 36h 37h 38h 39h to 3Bh 3Ch 3Dh 3Eh 3Fh 40h 41h 42h 43h 44h 45h 46h 9.3 Register description If registers (or bit groups contained in registers) are programmed with invalid values, i.e. ...
Page 21
... NXP Semiconductors Table 11. Legend default value. Bit Symbol STANDARD[7:0] R/W Table 12. Legend default value. Bit Symbol ACTIVE Example: To set the device to B standard e.g., please do the following steps. 1. Write 02h to register STANDARD, address 00h (set B standard) 2. Write 00h to register EASY_PROG, address 01h (make sure that ACTIVE = 0) 3 ...
Page 22
... NXP Semiconductors Table 13. Easy programming values Register Standard Index Name M/N 02h DIV_FUNC 04h 03h ADC_HEADR 01h 04h PC_PLL_FUNC 27h 05h PC_PLL_THRES 04h 06h PC_PLL_WGT 10h 07h PC_FLL_FUNC 84h 08h CARDET_LEVEL 08h 09h DTO_PC_LOW 85h 0Ah DTO_PC_MID F6h 0Bh DTO_PC_HIGH 92h ...
Page 23
... NXP Semiconductors 9.3.2 Diverse functions (includes tuner IF AGC Pin mode) Table 14. Legend default value. Bit and 9.3.3 ADC headroom Table 15. Legend default value. Bit Symbol ADC_HEADR[3:0] R/W TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio DIV_FUNC register (address 02h) bit description ...
Page 24
... NXP Semiconductors 9.3.4 Picture carrier PLL functions Table 16. Legend default value. Bit Symbol PC_PLL_BW[4:0] 2 PLL_ON 1 PULL_IN 0 CAR_DET TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio PC_PLL_FUNC register (address 04h) bit description Access Value R/W 0 0001 0 0010 ...
Page 25
... NXP Semiconductors Table 17. Legend default value. Bit Symbol PH_ERR_THRES[3:0] R/W Table 18. Legend default value. Bit Symbol 7 PHASE_PER PHASE_GAIN[6:0] R/W TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio PC_PLL_THRES register (address 05h) bit description Access Value Description ...
Page 26
... NXP Semiconductors Table 19. Legend default value. Bit Symbol 7 FLL_ON 6 LIM_ON FLL_LIM[5:0] R/W Table 20. Legend default value. Bit Symbol CAR_DET_LVL[4:0] R/W TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio PC_FLL_FUNC register (address 07h) bit description Access Value ...
Page 27
... NXP Semiconductors 9.3.5 Picture and sound carrier DTO Table 21. DTO_PC_LOW, DTO_PC_MID and DTO_PC_HIGH register (address 09h to 0Bh) bit description Legend default value. Address Register Bit 09h DTO_PC_LOW DTO_PC[7:0] 0Ah DTO_PC_MID DTO_PC[15:8] 0Bh DTO_PC_HIGH DTO_PC[23:16] R/W Table 22. DTO_SC_LOW, DTO_SC_MID and DTO_SC_HIGH register (address 0Ch to 0Eh) bit description Legend default value ...
Page 28
... NXP Semiconductors 9.3.6 Filter settings Table 23. Legend default value. Bit Symbol VID_FILT[2: NOTCH_FILT[4:0] (1) M/N standard. (2) All other standards. Fig 7. Video low-pass filters for sound carrier suppression TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio FILTERS_1 register (address 0Fh) bit description ...
Page 29
... NXP Semiconductors (1) M/N standard. (2) B standard. (3) G/H, D/ and L-accent standard. Fig 8. Notch filter for adjacent sound carrier suppression Table 24. Legend default value. Bit Symbol DC_NOTCH R SBP[3:0] TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio 10 resp(f) (dB) ...
Page 30
... NXP Semiconductors (1) M/N standard. (2) All other standards. (3) FM radio. Fig 9. SSIF and FM radio band-pass filters 9.3.7 Group delay equalization Table 25. Legend default value. Bit Symbol GRP_DEL[4:0] TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio 10 resp(f) (dB) ...
Page 31
... NXP Semiconductors 9.3.8 Digital IF AGC functions Table 26. Legend default value. Bit Symbol 7 D_IF_AGC_CORR 6 D_IF_AGC_MODE D_IF_AGC_AVG[4:0] R/W 0 RST_INT TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio D_IF_AGC_SET_1 register (address 12h) bit description Access Value R R 0001 0 0010 ...
Page 32
... NXP Semiconductors Table 27. Legend default value. Bit Symbol 7 D_AGC_ERR_LIM D_IF_AGC_BW[6:0] R/W Table 28. Legend default value. Bit Symbol 7 D_FORCE D_FORCE_VAL[6:0] R/W TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio D_IF_AGC_SET_2 register (address 13h) bit description Access Value ...
Page 33
... NXP Semiconductors 9.3.9 Tuner IF AGC functions Table 29. Legend default value. Bit Symbol 7 POL_TIF T_IF_AGC_SPEED[6:0] R/W Table 30. Legend default value. Bit Symbol UP_LIM[3: LOW_LIM[3:0] R/W Table 31. Legend default value. Bit Symbol 7 T_FORCE T_FORCE_VAL[6:0] TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio ...
Page 34
... NXP Semiconductors Table 32. Legend default value. Bit Symbol T_IF_AGC_FS[2:0] 9.3.10 V-sync adjustment Table 33. Legend default value. Bit 7 and 6 VS_WIDTH[1:0] R TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio T_IF_AGC_FS register (address 18h) bit description Access Value R/W ...
Page 35
... NXP Semiconductors 9.3.11 CVBS settings Table 34. Legend default value. Bit Symbol FOR_BLK 1 AUTO_BLK 0 VID_LVL Table 35. Legend default value. Bit Symbol CVBS_LVL[7:0] R/W TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio CVBS_SET register (address 1Dh) bit description ...
Page 36
... NXP Semiconductors Table 36. Legend default value. Bit Symbol CVBS_EQ[7:0] R/W Fig 10. Video equalizer curves TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio CVBS_EQ register (address 1Fh) bit description Access Value 0000 0001 0000 0010 0000 0100 ...
Page 37
... NXP Semiconductors 9.3.12 SSIF and mono sound settings Table 37. Legend default value. Bit 7 6 and 5 AM_FM_SND[1: Table 38. Legend default value. Bit TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio SOUNDSET_1 register (address 20h) bit description Symbol ...
Page 38
... NXP Semiconductors Table 38. Legend default value. Bit and 0 SSIF_SND[1:0] R/W Table 39. Legend default value. Bit Symbol SND_LVL[4:0] R/W TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio SOUNDSET_2 register (address 21h) bit description Symbol Access Value FOR_MUTE ...
Page 39
... NXP Semiconductors Table 40. Legend default value. Bit Symbol SSIF_LVL[4:0] R/W 9.3.13 Status registers: ADC saturation, AFC, H/V PLL and AGC Table 41. Bit Symbol ADC_SAT[7:0] R Table 42. Bit Symbol AFC[7:0] TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio ...
Page 40
... NXP Semiconductors Table 43. Deviation from nominal IF frequency nom nom : nom nom : nom nom nom : nom nom : nom nom [1] See Table 44. Bit 7 and TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio Calculation of frequency deviation from AFC value ...
Page 41
... NXP Semiconductors Table 45. Bit Symbol D_IF_AGC_STAT[7:0] R Table 46. Bit Symbol T_IF_AGC_STAT[7:0] 9.3.14 Debug register for ADC and DAC test Table 47. Legend default value. Bit Symbol ADC_TEST R/W 0 DAC_TEST R/W 9.3.15 Chip identification and Standby mode Table 48. Bit Symbol IDENTITY[7:0] R TDA8295_1 Product data sheet ...
Page 42
... NXP Semiconductors Table 49. Legend default value. Bit Symbol Access Value STDBY R/W 0 CLB 9.3.16 Status of clock PLL and video/sound DAC load Table 50. Bit Symbol LOAD_DACV R 5 LOAD_DACS R 4 PLL_LOCK TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio ...
Page 43
... NXP Semiconductors 9.3.17 ADC control In the TDA8295 a 12-bit ADC is implemented sampling with a 54 MHz clock (27 MHz optional). Table 51. Legend default value. Bit Symbol 7 GAINSET R CS[2:0] 3 DCIN 2 TWOS 1 SLEEP 0 PD_ADC TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio ...
Page 44
... NXP Semiconductors Table 52. Legend default value. Bit Symbol AD_PLL_BYP R/W 0 AD_SR54M 9.3.18 Video and sound DAC control The TDA8295 implements two 10-bit DAC modules (CVBS and sound outputs) which are sampled by a 108 MHz clock. A reference module derives biasing currents for the two DACs ...
Page 45
... NXP Semiconductors Table 55. Legend default value. Bit Symbol DA_CLK_INV R/W 5 DA_PLL_BYP R B_REF[3:0] 0 PD_DA_REF TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio DAC_REF_CLK_CTL register (address 37h) bit description Access Value Description R/W - not used For debugging purposes, the DAC clock polarity can be inverted ...
Page 46
... NXP Semiconductors 9.3.19 Clock generation (PLL and crystal oscillator) The TDA8295 implements a crystal oscillator which can be used either in Slave mode or in Oscillator mode (see input clock, and delivers the system clock of the IC (108 MHz). Table 56. Legend default value. Bit 7 and Table 57. ...
Page 47
... NXP Semiconductors Table 58. Legend default value. Bit and Table 59. Legend default value. DIRECTI [1] For description and P see For optimum performances, the following relations must be respected: • 275 MHz • 4 kHz TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio ...
Page 48
... NXP Semiconductors Table 60. PLL_REG07, PLL_REG08, PLL_REG09 and PLL_REG10 register (address 3Fh to 42h) bit description Legend default value. Address Register Bit Symbol 3Fh PLL_REG07 40h PLL_REG08 MSEL[7:0] R/W 41h PLL_REG09 NSEL[6:0] R 42h PLL_REG10 PSEL[4:0] R/W Table 61. XTALOSC_CTL register (address 43h) bit description Legend default value ...
Page 49
... NXP Semiconductors 9.3.20 GPIOs In the TDA8295, three general purpose input/outputs are implemented. Table 62. Legend default value. Bit Symbol GP1_CF[3: GP0_CF[3:0] Table 63. Legend default value. Bit and 4 - TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio GPIOREG_0 register (address 44h) bit description ...
Page 50
... NXP Semiconductors Table 63. Legend default value. Bit Table 64. HVPLL_BUS bit HVPLL_BUS[7] HVPLL_BUS[6] HVPLL_BUS[5] HVPLL_BUS[4] HVPLL_BUS[3] HVPLL_BUS[2] HVPLL_BUS[1] HVPLL_BUS[0] Table 65. Legend default value. Bit and TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio GPIOREG_1 register (address 45h) bit description ...
Page 51
... NXP Semiconductors 10. Limiting values Table 66. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter V core digital supply voltage (1.2 V) DDDC(1V2) V ADC analog supply voltage (3.3 V) DDA(ADC)(3V3) V PLL analog supply voltage (1.2 V) DDA(PLL)(1V2) V oscillator analog supply voltage (1.2 V) ...
Page 52
... NXP Semiconductors 12. Characteristics Table 68. Characteristics Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 53
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 54
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 55
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 56
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 57
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 58
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 59
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 60
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 61
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 62
... NXP Semiconductors Table 68. Characteristics …continued Power supplies 3 amb all others 10 %; FM/AM modulation = kHz modulation frequency; measured in application PCB (see 16 MHz crystal frequency, loaded with 75 settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional downconverter. ...
Page 63
... NXP Semiconductors 13. Application information 13.1 Typical application Fig 11. Typical application of TDA8295 TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio 2 I C-bus SDA_O SCL_O V-sync VSYNC TDA8275A IF_POS TDA1827x low IF signal IF_NEG (TUNER ICs) IF_AGC tuner IF AGC reference frequency Rev. 01 — ...
Page 64
V 1 C10 C9 AGND DGND 220 nF 220 nF AGND AGND DGND XOUT 9 C2 reference XIN 8 frequency 100 pF C3 IF_POS to TDA8275A 1 or TDA1827x ...
Page 65
... NXP Semiconductors 13.3 DAC connection This DAC has a differential current output capable of driving a doubly terminated 75 transmission line without external buffers. But it can also be used in single-ended applications. In that case both outputs still need proper termination. The off-chip resistive load must be connected to ground. ...
Page 66
... NXP Semiconductors 13.5 Reset operation 13.5.1 Hardware reset RST_N XIN T XIN Fig 13. Hardware reset operation After a hardware reset, the registers are set to default (power-on reset values) according to Table 13.5.2 Software reset A software reset can be done each time something has been programmed. The software reset does not affect the content of the registers but clears the fl ...
Page 67
... NXP Semiconductors 13.7 Crystal connection The typical crystal frequency value is 16 MHz. The values of the passive components depend on crystal manufacturer. The oscillator can be set in two configurations depending on the origin of the crystal. tuner and the TDA8295 (Slave mode), TDA8295 (Oscillator mode). ...
Page 68
... NXP Semiconductors Table 69. Fundamental oscillation frequency Bit MHz to 15 MHz 15 MHz to 20 MHz 20 MHz to 25 MHz 25 MHz to 30 MHz 30 MHz to 35 MHz 35 MHz to 40 MHz 40 MHz to 45 MHz 45 MHz to 50 MHz 14. Test information 14.1 Boundary scan interface ( “IEEE Std. 1149.1” ) The TDA8295 implements a boundary scan architecture to allow access to, and control of, board test support features within integrated circuits through a TAP ...
Page 69
... NXP Semiconductors ID number structure is: ID version [3: part number [15:0] = 224Ch ID manufacturer [11:1] = 015h ID mandatory [ IDCODE [31:0] = 1224 C02Bh When the boundary scan function is not used, please connect the four dedicated input pins (TRST_N, TCK, TDI and TMS) to GND. TRST_N Fig 16. Boundary scan block diagram ...
Page 70
... NXP Semiconductors Table 70. Pad signal IF_AGC GPIO0 GPIO1 GPIO2 SDA SCL RST_N SADDR1 SADDR0 Table 71. Symbol d(TDO) Fig 17. Boundary scan timing diagram TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio Boundary scan register list Chain position ...
Page 71
... NXP Semiconductors 15. Package outline HVQFN40: plastic thermal enhanced very thin quad flat package; no leads; 40 terminals; body 0.85 mm terminal 1 index area terminal 1 40 index area DIMENSIONS (mm are the original dimensions) (1) A UNIT max. 0.05 0. 0.2 0.00 0.18 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. ...
Page 72
... NXP Semiconductors 16. Soldering This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surface mount reflow soldering description” . 16.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits ...
Page 73
... NXP Semiconductors 16.4 Reflow soldering Key characteristics in reflow soldering are: • Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see reducing the process window • Solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board • ...
Page 74
... NXP Semiconductors Fig 19. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description” . 17. Abbreviations Table 74. Acronym ADC AFC AGC CC CMOS CORDIC CVBS DAC DTO DVD FIR FLL ...
Page 75
... NXP Semiconductors Table 74. Acronym ICPM ID IF NPC NSC PC PCB PLL PWM QSS SAW SC SMD SSIF STB TAP VCR VITS 18. Revision history Table 75. Revision history Document ID Release date TDA8295_1 20080204 TDA8295_1 Product data sheet Digital global standard low IF demodulator for analog TV and FM radio Abbreviations … ...
Page 76
... Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice ...
Page 77
... NXP Semiconductors 21. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Quick reference data . . . . . . . . . . . . . . . . . . . . . 3 5 Ordering information . . . . . . . . . . . . . . . . . . . . . 5 6 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 6 7 Pinning information . . . . . . . . . . . . . . . . . . . . . . 7 7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 8 8 Functional description . . . . . . . . . . . . . . . . . . 10 8.1 IF ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8.2 Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8.3 PLL demodulator . . . . . . . . . . . . . . . . . . . . . . 10 8.4 Nyquist filter, video low-pass filter, video and group delay equalizer, video leveling ...