GL6962/GL6962A
Application Circuit
R1
620¥ Ø
C1
100µF
+
R2
130K
1
13
VCC
R 10
13µ
12V
C5
10
LN
IR
C2
100nF
11
4
5
DTMF
QR
from dial
and
control circuit
Telephone
Line
C4
100pF
R4
12
GL6962
R3
(1)MUTE
RGA
3.92k
C7
1 nF
MIC+
7
6
MIC-
SLPE
TGA1
TGA2
REG
AGC
15
Iref
VEE
2
3
9
16
C6
14
8
R8
390
R7
RVA(R16-14
)
R5
3. 6k
R6
Zbal
+
R9
C8
C3
4.7• F
1 nF
20¥ Ø
(1)
Pin 12 is active LOW (
) for GL6962A.
MUTE
Fig. 5 Typical application of GL6962, shown there with piezo-electric earpiece and DTMF dialing.
(The diode bridge, the zener diode and R10 limit current into, and the voltage across, the circuit
during line transients. A different protection requirement is required for pulse dialing or register
recall.)
12
HYNIX [ HYNIX SEMICONDUCTOR ]
