W925E240 Datasheet, PDF (60/73 Pages) Winbond – 8-BIT CID MICROCONTROLLER

W925E/C240
7. APPLICATION CIRCUIT
The analog interface circuit of W925E/C240 shown in Figure 7-1 is a typical CPE system. The gain
control op-amp is set to unit gain to allow the electrical characteristics to be met in this application
circuit.
Tip/A
Ring/B
22nF 430K
22nF 430K
0.1uF 470K
34K
34K
53K6
200K
464K
60K4
0.1uF
150K
INP2
INN2
GCFB2
VREF
CAP
RNGDI
RNGRC
0.1uF 470K
Tip
Ring
Microphone
Tx+
Speech^Tx-
Network
Rx+
Rx-
Speaker
464K
464K
22nF
464K
22nF
Resistor must have 1% tolerance
Resistor must have 5% tolerance
100K
60K4
60K4
0.47u
464K
INP1
INN1
GCFB1
Figure 7-1 Application Circuit of CID
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