12
Agere Communications Inc.
Data Sheet
September 2001
L7585G Full-Feature, Low-Power SLIC and Switch
Electrical Characteristics
(continued)
Table 7. Analog Signal Pins
1. This parameter is not tested in production; it is guaranteed by design and device characterization.
2. VTX offset is measured with respect to pin VRTX.
3. Positive voltages from 0 V to V
CCA
are permitted at input DCR; however, voltages above 0 V have no effect on either the dc feed resis-
tance or tip/ring voltage.
Parameter
Min
Typ
Max
Unit
DC
OUT
:
Output Offset (no loop current)
Output Drive Current
Output Voltage Swing (+0.25 mA/–3 mA load):
Maximum
Minimum
Output Short-circuit Current
Output Load Resistance
Output Load Capacitance
1
VITR and VTX:
Output Offset (no loop current)
2
Output Drive Current
Output Voltage Swing (±1 mA load):
Maximum
Minimum (VITR)
Minimum (VTX)
Output Short-circuit Current
Output Load Resistance
Output Load Capacitance
1
VRTX:
Output Voltage
Output Drive Current
Output Short-circuit Current
Output Load Capacitance
1
RSW:
Impedance to Ground
DCR:
Input Voltage Range
3
Input Bias Current
Input Impedance
TXI:
Input Impedance
Input Voltage Compliance
Input Clamp Voltage
RCVP and RCVN:
Input Voltage Range
Input Bias Current
Input Impedance
PT and PR:
Overvoltage (from external source; continuous)
FB1 and FB2:
ac Output Impedance
Output Short-circuit Current
CF1 and CF2:
Output Impedance
1
—
0.25
V
BAT
–10
—
5
—
—
—
—
—
—
—
—
±200
–3.0
V
CCA
0.5
±20
—
50
mV
mA
V
V
mA
k
pF
—
±1
–10
±3.5
–3.5
—
4
—
—
—
—
—
—
—
—
—
±100
—
V
CCA
—
V
CCA
– 1.0
±20
—
50
mV
mA
V
V
V
mA
k
pF
2.2
±500
—
—
2.4
—
—
—
2.6
—
±15
50
V
μA
mA
pF
3
—
—
M
–8
—
500
—
—
—
0
±1
—
V
μA
k
75
±0.4
±0.4
—
—
—
—
—
±0.8
k
V
V
–2.5
—
10
—
—
—
V
CCA
±1.5
—
V
μA
M
—
—
±265
V
—
±27
—
—
10
±34
k
μA
180
—
375
k