tsa1204 STMicroelectronics, tsa1204 Datasheet
tsa1204
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tsa1204 Summary of contents
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... INBQ 11 AGND The inputs of the ADC must be differentially driven. The TSA1204 is available in extended (-40° +85° C) temperature range small 48-pin TQFP package. Applications ■ Medical imaging and ultrasound ■ 3G base station ■ I/Q signal processing applications ■ ...
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... EVAL1204/BA evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.7.1 8.7.2 8.7.3 8.7.4 9 Practical application examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 9.1 Digital interface applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 9.2 Medical imaging application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2/31 Output enable mode (OEB Select mode (SELECT Internal reference and common mode . . . . . . . . . . . . . . . . . . . . . . . . . . 16 External reference and common mode . . . . . . . . . . . . . . . . . . . . . . . . . 16 Evaluation board operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Consumption adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Single and differential inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Mode select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 TSA1204 ...
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... TSA1204 10 Definitions of specified parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Static parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Dynamic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 12 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Contents 3/31 ...
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... Schematic diagram 1 Schematic diagram Figure 1. TSA1204 block diagram VREFPI VREFPQ VREFMQ VINCMQ Figure 2. Timing diagram Simultaneous sampling on I/Q channels I N-1 Q CLK SELECT OEB sample N-8 I channel DATA OUTPUT sample N-9 sample N-7 I channel Q channel 4/31 +2.5V/3.3V CLK Timing VINI channel VINBI VINCMI common mode REF I VREFMI Polar ...
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... TSA1204 2 Pin descriptions Table 1. Pin descriptions (TQFP48 package) Pin Name 1 AGND Analog ground 2 INI I channel analog input 3 AGND Analog ground I channel inverted 4 INBI analog input 5 AGND Analog ground Analog bias current 6 IPOL input 7 AVCC Analog power supply 8 AGND Analog ground Q channel analog ...
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... Test conditions Min Typ -81.5 -71.0 66.9 68.5 -80 64.8 68 10 Msps, CC CCB and T = 25° C (unless otherwise amb Test conditions Min Typ 0 22 load 9 capacitance 7 7 TSA1204 Max Unit dBc dB -70 dBc dB bits Max Unit 20 MHz cycle s cycle ...
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... TSA1204 5 Absolute maximum ratings Table 4. Absolute maximum ratings Symbol AV Analog supply voltage CC DV Digital supply voltage CC V Digital buffer supply voltage CCBE V Digital buffer supply voltage CCBI ID Digital output current out T Storage temperature stg HBM: human body model ESD CDM: charged device model ...
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... C (unless otherwise amb Min Typ 1.1 2.0 7.0 3 =20 Msps 1000 S 70 Min Typ Max 0 0.8 2.0 2.5 0. CCBE 0. CCBE V CCBE 0 VCCBE 0.9 x VCCBE VCCBE -1.7 1 Min Typ 0.807 0.89 0.963 0.40 0.46 TSA1204 Max Unit 2.8 Vpp pF KΩ MHz MHz Unit µA pF Max Unit V 0.52 V ...
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... TSA1204 Table 9. Power consumption Symbol I Analog supply current CCA I Digital supply current CCD I Digital buffer supply current (10 pF load) CCBE I Digital buffer supply current CCBI Power consumption in normal operation P d mode R Thermal resistance (TQFP48) thja Table 10. Accuracy Symbol OE Offset error GE Gain error ...
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... MSPS CCA 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0 For parameter definitions, see 10/31 =40 mA 500 1000 1500 2000 Output Code =40 mA MHz in 500 1000 1500 2000 Output Code Section 10: Definitions of specified parameters on page TSA1204 (a) 2500 3000 3500 4000 (a) 2500 3000 3500 4000 25. ...
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... TSA1204 Figure 5. Linearity vs =5MHz pol 100 ENOB Q 90 ENOB I 80 SINAD Q SNR SNR_I (MHz) Figure 7. Linearity vs =20Msps CCA 100 ENOB_Q 90 80 SINAD_Q SNR_Q 70 60 SNR_I SINAD_I Fin (MHz) Figure 9 ...
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... THD_Q SFDR_Q -100 -110 -120 2.25 2.35 2.45 2.55 AVCC ( =20Msps; I =40mA CCA -40 -50 -60 THD_I SFDR_I -70 -80 -90 THD_Q SFDR_Q -100 -110 -120 2.25 2.35 2.45 2.55 DVCC (V) CCBI F =20Msps; I =40mA CCA -40 -50 -60 THD_I SFDR_I -70 -80 -90 THD_Q SFDR_Q -100 -110 -120 2.25 2.35 2.45 2.55 VCCBI (V) TSA1204 =5MHz in 2.65 =5MHz in 2.65 =5MHz in 2.65 ...
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... TSA1204 Figure 17. Linearity vs. V CCBE F =20Msps CCA 90 ENOB_I 85 80 ENOB_Q 75 SNR_I SINAD_I 70 65 SNR_Q 2.25 2.75 VCCBE (V) Figure 19. Linearity vs. duty cycle F =20Msps CCA 100 ENOB_I 90 80 ENOB_Q SNR_I 70 60 SNR_Q Positive Duty Cycle (%) Figure 18. Distortion vs. V =40mA; F ...
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... Figure 22. Dual-tone 8K FFT at 20Msps - Channel I F =9.7MHz; F in1 in2 0 -20 -40 -60 -80 -100 -120 -140 14/31 @-1dBFS Frequency (MHz) =10.7MHz; I =40mA, V @-7dBFS; V CCA in1 Frequency (MHz @-7dBFS; IMD=-76dBc in2 TSA1204 10 10 ...
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... TSA1204 8 Application information The TSA1204 is a dual-channel, 12-bit resolution analog-to-digital converter based on a pipeline structure and the latest deep submicron CMOS process to achieve the best performance in terms of linearity and power consumption. Each channel achieves 12-bit resolution through the pipeline structure which consists of 12 internal conversion stages in which the analog signal is fed and sequentially converted into digital data ...
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... The INCM voltage is half the value of V The best linearity and distortion performance is achieved with a dynamic range above 2 V and by increasing the V To obtain the highest performance from the TSA1204 device, we recommend implementing the configuration shown in Figure 24. External reference setting 16/31 1 ...
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... TSA1204 8.3 Driving the differential analog inputs The TSA1204 is designed to deliver optimum performance when driven on differential inputs transformer is an efficient way of achieving this high performance. Figure 25 describes the schematics. The input signal is fed to the primary of the transformer, while the secondary drives both ADC inputs. The common mode voltage of the ADC (INCM) is connected to the center-tap of the secondary of the transformer in order to bias the input signal around this common voltage, internally set to 0 ...
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... VREFM is connected to ground; the differential amplitude obtained 8.4 Clock input The quality of your TSA1204 converter is very dependent on your clock input accuracy, in terms of aperture jitter; the use of a low jitter crystal controlled oscillator is recommended. Further points to consider in your implementation are: ● The duty cycle must be between 45% and 55%. ● ...
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... TSA1204 Table 12. Total power consumption optimization depending (Msps kΩ) pol Optimized power (mW) 8.6 Layout precautions To use the ADC circuits most efficiently at high frequencies, some precautions have to be taken for power supplies: ● First of all, the implementation of 4 proper separate supplies and ground planes (analog, digital, internal and external buffer ones) on the PCB is recommended for high speed circuit applications to provide low inductance and low resistance common return ...
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... CQ11 330pF 603 CI13 470nF 805 CI8 330pF 603 C38 470nF 805 C14 330pF 603 CD1 470nF 805 CI30 330pF 603 C19 470nF 805 TSA1204 Footprint Name Part Footprint Type CQ6 NC 805 CI6 NC 805 U2 74LCX573 TSSOP20 U3 74LCX573 TSSOP20 603 ...
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... TSA1204 Figure 30. TSA1204 evaluation board schematic VccB3 GndB3 VccB2 GndB2 VccB1 GndB1 INCM REFM REFP + D1 GNDBI 37 D0(LSB) DVCC 38 + VCCBE DGND 39 GNDBE SELECT 40 VCCBI CLK 41 VCCBI DGND CLKD 42 OEB DVCC 43 AVCC AVCC 44 AVCC AGND 45 INCMI INCMQ 46 REFMI REFMQ 47 REFPI REFPQ 48 Application information ...
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... RSI6, RSI7, RSI8 (respectively RSQ6, RSQ7, RSQ8 for channel Q) are open circuits. 22/31 Connection Internal voltage (V) AVCC AGND REFPI 0.89 REFMI INCMI 0.46 REFPQ 0.89 REFMQ INCMQ 0.46 DVCC DGND GNDBI VCCBI GNDBE VCCBE GNDB3 VCCB3 TSA1204 External voltage (V) 2.5 0 <1.4 <0.4 <1 <1.4 <0.4 <1 2 2.5 0 1.8/2.5/3.3 0 2.5 (Raj1), and therefore pol ...
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... TSA1204 8.7.4 Mode select In order to select the channel you want to evaluate, you must set a jumper on the board in the relevant position for the SELECT pin (see The channels selected depend on the position of the jumper: ● With the jumper connected to the upper connectors, channel I at the output is selected. ...
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... Practical application examples 9.1 Digital interface applications The wide external buffer power supply range of the TSA1204 makes it a perfect choice for plugging into 2 3.3 V low voltage DSPs or digital interfaces. 9.2 Medical imaging application Driven by the demand of the applications requiring nowadays either portability or ahigh degree of parallelism (or both), this product satisfies the requirements of medical imaging and telecom infrastructures ...
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... TSA1204 10 Definitions of specified parameters Static parameters Static measurements are performed using the histograms method MHz input signal, sampled at 50 Msps, which is high enough to fully characterize the test frequency response. The input level is +1 dBFS to saturate the signal. Differential non linearity (DNL) The average deviation of any output code width from the ideal code width of 1 LSB ...
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... SINAD is decreased the ENOB by 1/2 bit. Pipeline delay Delay between the initial sample of the analog input and the availability of the corresponding digital data output, on the output bus. Also called data latency expressed as a number of clock cycles. 26/31 /FS) 0 TSA1204 ...
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... TSA1204 11 Package mechanical data In order to meet environmental requirements, STMicroelectronics offers these devices in ® ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...
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... 0,10 mm .004 inch SEATING PLANE 0,25 mm .010 inch GAGE PLANE K Inches Min. Typ. 0.002 0.053 0.055 0.007 0.009 0.004 0.354 0.276 0.216 0.0197 0.354 0.276 0.216 0.018 0.024 0.039 TSA1204 Max. 0.063 0.006 0.057 0.011 0.008 0.030 ...
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... TSA1204 12 Ordering information Table 15. Order codes Part number TSA1204IFT-E EVAL1204/BA Temperature Package range -40° +85° C TQFP48 Evaluation board Ordering information Packing Marking Tape & reel SA1204I 29/31 ...
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... Revision history Table 16. Document revision history Date 1-Apr-2004 2-May-2005 26-Sep-2006 12-Dec-2006 30/31 Revision 1 Initial release. Datasheet modified from Not for new Design to full production further 2 to new business demand. Editorial updates. Reorganized document structure. No technical 3 changes. 4 Renamed pin 42 to CLKD. TSA1204 Changes ...
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... TSA1204 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...