VCC
1 4 7 2 3 10
8
9
11
1816171215
14
13
6
5
VREF
VCC
VREF
VCC
VCC
VCC
VREF
OFF
1.8V
OFF
Carrier
Input
4.8V
CH1 Output
GND
CH2 Output
GND
Carrier
Input
OFF
OFF
Signal
Input
High
Level
Limit
High
Level
Limit
Multiplier
Amp.
Multiplier
Amp.
DC
Offset
DC
Offset
AN2020S
Dual Balanced Modulator IC
n Overview
The AN2020S is an integrated circuit which incor-
porates two balanced modulators.
It can be used for a video-frequency-band dual am-
plifier, variable gain amplifier, balanced modulator,
demodulator, etc.
n Features
• Low voltage operation:4.8V(typ.)
• Carrier suppression:–43dB(typ.)
• Dual balanced modulator
• Superimpose of DC offset to input signal available
• External adjustment of high level limitation to input
signal
n Block Diagram
1
2
3
4
5
6
7
8
910
11
12
13
14
15
16
17
18
0.4
–
0.25
1.27
1.3
0.1
–
0.1
0.3 5.4– 0.3
7.7– 0.3
0.15 0.65
1.5
–
0.2
12.6
–
0.3
Unit:mm
18-Pin PANAFLAT Package (SOP018-P-0300)