tda6403a NXP Semiconductors, tda6403a Datasheet - Page 5

• Manufacturer Part Number: tda6403a
• Description: 5 V Mixers/oscillators And Synthesizers For Cable Tv And Vcr 2-band Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
2000 Jan 24
handbook, full pagewidth
5 V mixers/oscillators and synthesizers for
cable TV and VCR 2-band tuners
RFGND
UHFIN2
UHFIN1
The pin numbers in parenthesis represent the TDA6403 and TDA6403A.
VHFIN
CE/AS
XTAL
SW
DA
CL
1 (28)
18 (11)
14 (15)
13 (16)
11 (18)
12 (17)
3 (26)
4 (25)
2 (27)
BS
BS
SCL
SDA
SW CE/AS
POWER-DOWN
TDA6402A
TDA6403A
OSCILLATOR
PRESCALER
DIVIDE BY 8
TDA6402
TDA6403
DETECTOR
RF INPUT
RF INPUT
4 MHz
XTAL
VHF
UHF
I
2
C / 3-WIRE BUS TRANSCEIVER
CONVERTER
3-BIT A/D
FL
IFFIL1 IFFIL2
RSA
5 (24)
PROGRAMMABLE
512, 640, 1024
FREQUENCY
PRESCALER
REGISTER
DIVIDE BY
DIVIDER
15-BIT
15-BIT
6 (23)
BS
BS
Fig.1 Block diagram.
RSB
FL
LOCK/ADC
f REF
f DIV
MIXER
MIXER
GATE
VHF
UHF
f REF
COMPARATOR
DETECTOR
5
15 (14)
1/2f DIV
IN LOCK
PHASE
FL
T0, T1, T2
T0, T1, T2 CP
BS
V CC
CP
CHARGE
19 (10)
PUHF
PUMP
UHF
T2
9 (20)
BS
BS
PVHFH
VHFH VHFL FMST
T1
REGISTER
REGISTER
CONTROL
8 (21)
PORT
TDA6402; TDA6402A;
T0 RSA RSB OS
TDA6403; TDA6403A
PREAMPLIFIER
OSCILLATOR
OSCILLATOR
PVHFL
OPAMP
7 (22)
UHF
VHF
OS
IF
FMST
10 (19)
Product specification
(13) 16
(12) 17
(5) 24
(7) 22
(6) 23
(9) 20
(1) 28
(2) 27
(3) 26
(8) 21
MGE692
(4) 25
IFOUT
UHFOSCIB2
UHFOSCOC2
UHFOSCOC1
UHFOSCIB1
VHFOSCOC
VHFOSCIB
OSCGND
CP
VT
GND