TDA6508TT NXP Semiconductors, TDA6508TT Datasheet - Page 5

• Manufacturer Part Number: TDA6508TT
• Manufacturer: NXP Semiconductors

Specifications of TDA6508TT

• Pin Count: 32
• Screening Level: Commercial
• Package Type: TSSOP
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
6
2005 Mar 25
3-band mixer/oscillator and PLL for
terrestrial tuners
(1) ‘A’ versions only.
The pin numbers in parenthesis refer to versions TDA6509 and TDA6509A.
BLOCK DIAGRAM
HIGH_RFIN2
HIGH_RFIN1
MID_RFIN2
LOW_RFIN
MID_RFIN1
XTAL_REF
RF_GND
SDA
SCL
AS
5 (28)
6 (27)
3 (30)
4 (29)
1 (32)
2 (31)
17
(16)
16 (17)
15 (18)
21 (12)
OSCILLATOR
HIGH BAND
LOW BAND
SYMMETRICAL/ASYMMETRICAL IFAMPLIFIER
PLL SYNTHESIZER
RF INPUT
RF INPUT
RF INPUT
CRYSTAL
FILTER BUFFER
BAND
4 MHz
VHF
VHF
UHF
I 2 C-BUS / 3-WIRE BUS
FL
TRANSCEIVER
PROGRAMMABLE
FREQUENCY
RSA
REGISTER
3-BIT ADC
DIVIDER
REFERENCE
(TDA6509A)
ADC/P4
15-BIT
15-BIT
TDA6508A
(TDA6509)
64, 80, 128
TDA6508
DIVIDER
WEAK SIGNAL BOOSTER
18 (15)
RSB
Fig.1 Block diagram.
WSB
FL
f
f
div
ref
HIGH BAND
LOW BAND
GATE
f
ref
MIXER
MIXER
MIXER
COMPARATOR
VHF
VHF
UHF
DETECTOR
5
IN-LOCK
1/2f
PHASE
FL
div
SAW DRIVER
T0, T1, T2
V
CC
CP
CHARGE
25 (8)
T0
T1
T2
P3
PUMP
14 (19) 11 (22) 12 (21) 13 (20)
T2
CP
REGISTER
P2
T1
PORT
REGISTER
CONTROL
OSCILLATOR
OSCILLATOR
OSCILLATOR
LOW BAND
TDA6508; TDA6508A;
HIGH BAND
T0 RSA RSB WSB
TDA6509; TDA6509A
P1
VHF
VHF
UHF
TUNE
AMP
P0
23 (10)
10 (23)
19 (14)
20 (13)
22 (11)
31 (2)
32 (1)
30 (3)
28 (5)
29 (4)
26 (7)
27 (6)
24 (9)
9 (24)
7 (26)
8 (25)
Product specification
mdb250
PLL_GND
LOW_OSCOUT
LOW_OSCIN
OSC_GND
MID_OSCIN1
MID_OSCIN2
HIGH_OSCIN1
HIGH_OSCIN2
IFAMP_OUT1
IFAMP_OUT2/
IF_GND
IFAMP_IN1
IFAMP_IN2
MIX_OUT1
MIX_OUT2
CP
VT