TDA5745 PHILIPS [NXP Semiconductors], TDA5745 Datasheet - Page 13

• Manufacturer Part Number: TDA5745
• Description: Low power mixers/oscillators for hyperband tuners
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
1998 Mar 09
handbook, full pagewidth
Low power mixers/oscillators for
hyperband tuners
The pin numbers in parenthesis represent the TDA5745.
C27
VHFH
VHFL
V ripple
UHF
P9
BC847B
for test purpose only
10 F
(16 V)
TR1
LED-3R
LED-3G
LED-3Y
J5
D5
D6
D7
1.2 k
50
R18
R22
C28
330
330
330
R10
R11
R8
V CC
10 F
(16 V)
V CC
J1
V CC
J2
UHF2
UHF1
L value/C value
VHF
6
4
TOKO 7 km
J3
L3
J4
7
8
P1
P2
P3
3
1
2
1 nF
1 nF
1 nF
C1
C3
C6
15 pF
15 pF
C13
C11
UHFIN2
UHFIN1
RFGND
Fig.11 Measurement circuit.
VHFIN
IFFIL2
IFFIL1
n.c.
n.c.
n.c.
n.c.
n.c.
BS
1 (24)
2 (23)
3 (22)
4 (21)
5 (20)
6 (19)
7 (18)
8 (17)
9 (16)
10 (15)
11 (14)
12 (13)
(TDA5745)
TDA5744
13
(10) 15
(11) 14
(12) 13
(1) 24
(2) 23
(3) 22
(4) 21
(5) 20
(6) 19
(7) 18
(8) 17
(9) 16
UHFOSCIB1
GND
IFOUT2
VHFOSCIB2
VHFOSCOC2
VHFOSCOC1
VHFOSCIB1
UHFOSCIB2
UHFOSCOC2
UHFOSCOC1
IFOUT1
V CC
1 nF
1 nF
C19
C20
2.2 pF
150 pF
2.2 pF
2.2 pF
10 nF
C12
1 pF
C14
1 pF
C16
1 pF
C17
1 pF
C22
C2
C4
C7
C8
80 nH
80 nH
L9
L8
22 k
BB149
R21
D1
100
C9
pF
D4
BB149
C18
10 pF
C21
18 pF
BB152
TDA5744; TDA5745
R2
22
k
D2
AGND
1
R6
22 k
for test purpose only
47 pF
33 V
L4
80 nH
L2
30 nH
C15
4.7 nF
4.7 nF
C10
L7
1
2
3
C5
2
V CC
V CC
Preliminary specification
3
7
8
voltage
tuning
L5
16 nH
P6
R9
4.7 k
5 V
D3
BA792
4
6
4
P8
P4
R4 1.5 k
R1 1.5 k
R5 2.7 k
R3 22 k
1 H
L1
L6
30 nH
22 k
R7
OUT
IF
10 nF
C24
MGM467
VHFH
VHFL
R14
22 k
R16
22 k