NJM2540/2543
Mixer and Oscillator for TV Tuner
DESCRIPTION
The NJM2540/43 are mixer/oscillator especially designed for TV
tuners and consists of mixers, oscillators, IF amplifier and OSC buffer
for VHF,UHF and CATV band, built into one chip.
The NJM2540/43 packaging in SSOP16 are suitable for small-sized
tuners.
The NJM2543 is the reverse pin assignment type of the NJM2540.
FEATURES
•
Operating Voltage 5V
•
Mixers, Oscillators, IF AMP and OSC buffer on chip
•
Bipolar Technology
•
Package Outline: SSOP16
PACKAGE OUTLINE
NJM2540V/NJM2543V
BLOCK DIAGRAM
MIXOUT2
MIXOUT1
VHFIN2
UHFIN2
VHFIN1
UHFIN1
(1)
16
(2)
15
(3)
14
(4)
13
(5)
12
(6)
11
(7)
10
(8)
9
UHF MIX
VHF MIX
IF AMP
U/V
SW
VHF OSC
UHF OSC
OSC BUFF
1
(16)
VHFOSC1
2
(15)
VHFOSC2
3
(14)
VOSC
4
(13)
UHFOSC1
5
(12)
UHFOSC2
6
(11)
GND
7
(10)
OSCOUT
8
(9)
U/V SW
(Note)
Pin numbers in circle are for NJM2540
Pin numbers in parenthesis are for NJM2543
IFOUT
VCC
-1-