TDA5744 Datasheet, PDF (13/20 Pages) NXP Semiconductors – Low power mixers/oscillators for hyperband tuners

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