TDA5744 Datasheet, PDF (3/20 Pages) NXP Semiconductors – Low power mixers/oscillators for hyperband tuners

Philips Semiconductors
Low power mixers/oscillators for
hyperband tuners
BLOCK DIAGRAM
Preliminary specification
TDA5744; TDA5745
handbook, full pagewidth
n.c.
n.c.
n.c.
n.c.
n.c.
IFFIL2
IFFIL1
RFGND
12 (13)
11 (14)
10 (15)
8 (17)
7 (18 )
6 (19)
5 (20)
4 (21)
TDA5744
(TDA5745)
VHFIN
3 (22)
VHF
STAGE
VHF
MIXER
9 (16) ^ELECTRONIC
BS
BAND
SWITCH
UHFIN2
UHFIN1
2 (23)
1 (24)
UHF
STAGE
UHF
MIXER
DC
(12) 13
STABILIZER
VCC
IF
AMPLIFIER
(11) 14
(10) 15
(9) 16
VHF
OSCILLATOR
(4) 21
(3) 22
(2) 23
(1) 24
IFOUT1
IFOUT2
GND
VHFOSCIB1
VHFOSCOC1
VHFOSCOC2
VHFOSCIB2
UHF
OSCILLATOR
(8) 17
(7) 18
(6) 19
(5) 20
UHFOSCIB1
UHFOSCOC1
UHFOSCOC2
UHFOSCIB2
MGM466
The pin numbers in parenthesis represent the TDA5745.
Fig.1 Block diagram.
1998 Mar 09
3