TDA6502 Datasheet, PDF (28/44 Pages) NXP Semiconductors – 5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners

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W1
C1
UHFIN1 ₁₍₂₈₎
UHFOSCOC2 ^{C8 1.2 pF}
28(1)
R3
W2 ^{4.7 nF} C2
UHFIN2 ₂₍₂₇₎
UHFOSCIB2 ^{C9 1.2 pF}
27(2)
D1 ^{22 kΩ}
BB179 R4
L1
W3 ^{4.7 nF} C3
VHFIN ₃₍₂₆₎
26(3) ^{UHFOSCOC1 C10 1.2 pF} _{R2 27 Ω}
C12 22 kΩ
27 pF
C4
15 pF
C5
4.7 nF
L4
RFGND ₄₍₂₅₎
IFFIL1 ₅₍₂₄₎
IFFIL2 ₆₍₂₃₎
25(4) ^UHFOSCIB1
VHFOSCOC
24(5)
23(6) ^OSCGND
C11 1.2 pF
C13
2 pF
BB178
D2
L2
C15
82 pF
L3
R6 5.6 Ω
C17
R7
4.7 nF
R5
22 kΩ
D4
15 pF
PVHFL _{7(22) TDA6502/2A 22(7)} ^VHFOSCIB
C14
10 kΩ _C6
C16 BA792
LED
D5
LED
D6
LED
D7
R15 330 Ω
R16 330 Ω
R17 330 Ω
PVHFH
(TDA6503/3A)
8(21)
21(8)
GND
PUHF ₉₍₂₀₎
20(9) ^IFOUT
FMST ₁₀₍₁₉₎
19(10) ^VCC
2 pF
L5
4.7 nF
C18 4.7 nF
VCC _{C19 4.7 nF}
R8 ^{22 nF}
D3
VHF-HIGH
R9 ^{680 Ω}
VHF-LOW
3.9 kΩ
R10
LED
R18 330 Ω
CON4
SW ₁₁₍₁₈₎
Y1
18(11) ^XTAL
C20
3.9 kΩ
for test purpose only
open for 3-wire _{CE/AS 12(17)}
17(12) ^VT
18 pF ^CON3
R14
VCC
DA ₁₃₍₁₆₎
16(13) ^CP
C21
R12
J1
2.2 kΩ
C23
10 nF
CON1
CL ₁₄₍₁₅₎
100 nF
15(14) ^LOCK/ADC
12 kΩ
R13
22 kΩ
R21
R20 R19
330
330 330
TR1
Ω
ΩΩ
R22
330 Ω
C22
330 pF
BC847B
R26
6.8 kΩ
C27
C26
10 µF 10 µF
(16 V) (16 V)
RIPPLE
01 02 03 04 05 06 J3
R25
1 kΩ
LOCK/ADC
R24
TR2
68 kΩ
BC847B
J2 04 03 02 01
R11
27 Ω
for test
purpose only
FCE481
for test purpose only
The pin numbers in brackets represent the TDA6503 and TDA6503A.
Fig.19 Measurement circuit.