ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Power Dissipation BAT = –48 V, Normal Polarity
On-hook Open Circuit state
–1*
On-hook OHT state
–1*
On-hook Active state
–1*
Off-hook OHT state
Off-hook Active state
Supply Currents
V
CC
on-hook supply current
Open Circuit state
OHT state
Active state
Open Circuit state
OHT state
Active state
Open Circuit state
OHT state
Active state
3.0
6.0
7.5
1.0
2.2
2.7
0.4
3.0
4.0
4.5
10.0
12.0
2.3
3.5
6.0
1.0
5.0
6.0
mA
R
L
= 600
Ω
R
L
= 600
Ω
35
35
135
135
200
200
500
650
120
80
250
200
400
300
750
1000
mW
V
EE
on-hook supply current
V
BAT
on-hook supply current
Power Supply Rejection Ratio (V
RIPPLE
= 50 mVrms)
V
CC
50 Hz to 3.4 kHz
–1*
3.4 kHz to 50 kHz
–1
V
EE
50 Hz to 3.4 kHz
–1*
3.4 kHz to 50 kHz
–1
V
BAT
50 Hz to 3.4 kHz
–1*
3.4 kHz to 50 kHz
–1
Off-Hook Detector
Current threshold accuracy
I
DET
= 365/R
D
nominal
B(RING) to GND
B(RING) to GND
Midpoint to GND
–20
+20
%
25
30
22
25
20
25
10
10
27
30
20
25
45
45
35
35
40
40
25
25
45
45
40
40
dB
Ground-Key Detector Thresholds, Active State, BAT = –48 V (See Test Circuit F)
Ground-key resistance threshold
Ground-key current threshold
Ring-Trip Detector Input
Bias current
Offset voltage
Source resistance 0 to 2 MΩ
–5
–50
–0.05
0
+50
µA
mV
2.0
5.0
9
10.0
kΩ
mA
8
Am7953X Data Sheet
AMD [ ADVANCED MICRO DEVICES ]
