Philips Semiconductors
Supply circuit with power-down for
telephone set peripherals
SYMBOL
PARAMETER
CONDITIONS
Power-down input (pin 8)
V8
supply voltage for power-down
I8
supply current to power-down circuit V8 = 3 V
Note
1. Power-down circuit supplied via external source.
APPLICATION INFORMATION
Product specification
TEA1081
MIN. TYP. MAX. UNIT
2
−
VLN V
−
−
70 µA
handbook, full pagewidth
TELEPHONE
LINE
CD =
68 pF
SPEECH/
TRANSMISSION V LN
CIRCUIT
I1
CL = 2.2 µF
AD
3
PD
4
SP
8
LN
1
IF
56
TEA1081
2
7
VN
CS =
VA
47 pF
RV
QS
IO CO
RL = 100 kΩ
VO
PERIPHERAL
CIRCUITS
MLC171
Fig.6 Application diagram.
September 1994
8