V
B
200k
3
13
4
12
GB3215
(GB3225)
13n
REGULATOR
VC
A/D
EEPROM
INTERFACE
7
8
205n
CHANNEL 1
CHANNEL 2
9
A/D
3k9
70nF
OUT
14
1
D/A
HBRIDGE
FRONTWAVE
A/D
S
LP FILTER
70n
60n
6
CHANNEL 3
CHANNEL 4
3k9
11
1k
10
5
2
All resistors in ohms, all capacitors in farads unless otherwise stated.
Figure 1: Test Circuit
VC
200k
V
B
MS
4
12
3
11
13n
205n
GA3214
(GA3224)
REGULATOR
VC
A/D
EEPROM
INTERFACE
7
6
8
A/D
CHANNEL 1
70n
60n
13
D/A
HBRIDGE
S
1
CHANNEL 2
Knowles or Microtronic
zero-bias receiver
10
A/D
9
5
2
All resistors in ohms, all capacitors in farads unless otherwise stated.
Knowles or Microtronic microphones
Figure 2: Typical Application Circuit
4 of 6
GENNUM CORPORATION
22735 - 3
GENNUM [ GENNUM CORPORATION ]
