am79r70 Advanced Micro Devices, am79r70 Datasheet - Page 8

• Manufacturer Part Number: am79r70
• Description: Ringing Subscriber Line Interface Circuit
• Manufacturer: Advanced Micro Devices

ELECTRICAL CHARACTERISTICS (CONTINUED)
8
Line Characteristics
I
I
I
I
I
I
I
V
V
Power Supply Rejection Ratio (V
V
V
V
V
Power Dissipation
On hook, Open Circuit state
On hook, Standby state
On hook, OHT state
On hook, Active state
Off hook, Standby state
Off hook, OHT state
Off hook, Active state
Supply Currents
I
I
I
L
L
L
L
L
A
B
CC
NEG
BAT
A
AB
CC
NEG
BAT1
BAT2
, Loop-current accuracy
, Long loops, Active state
, Accuracy, Standby state
LIM
, Loop current, Open Circuit state
, Pin A leakage, Tip Open state
, Pin B current, Tip Open state
, Standby, ground-start signaling
, On-hook V
, Open Circuit voltage
, On-hook V
, On-hook V
Description
CC
BAT
NEG
supply current
supply current
supply current
RIPPLE
= 100 mVrms), Active Normal State
I
B2EN = 0
R
R
I
T
Active, A and B to ground
OHT, A and B to ground
R
R
B to ground
A to –48 V = 7 k ,
B to ground = 100
50 Hz to 3400 Hz
50 Hz to 3400 Hz
50 Hz to 3400 Hz
50 Hz to 3400 Hz
V
V
V
V
V
V
V
Open Circuit state
Standby state
OHT state
Active state–normal
Open Circuit state
Standby state
OHT state
Active state–normal
Open Circuit state
Standby state
OHT state
Active state–normal
I
L
L
Test Conditions (See Note 1)
L
A
BAT1
BAT2
BAT1
BAT1
BAT1
BAT1
BAT2
LDC
LDC
L
L
P R E L I M I N A R Y
in constant-current region,
= constant-current region
= 25°C
= 0
= 0
=
Am79R70 Data Sheet
--------------------------------------
= 600
= 750
R
R
V
or V
L
L
BAT1
R
= 300
= 300
L
BAT2
+
400
, RSGL = open
, RSGL = short
–
R
10 V
L
= 300
Min
0.9I
0.8I
–7.5
20
20
18
42
33
30
30
30
L
L
Typ
2000
2000
21.7
0.45
200
220
550
3.0
3.2
6.2
6.5
0.1
0.1
0.7
0.7
0.6
2.0
2.7
27
55
55
34
–5
50
40
50
50
48
55
I
I
L
L
Max
1.1I
1.2I
2800
2200
110
100
100
100
300
350
750
4.5
5.5
8.0
9.0
0.2
0.2
1.1
1.1
1.0
1.5
4.0
5.0
39
80
L
L
Unit
mW
mA
mA
mA
µA
dB
V
Note
4
4
7
5
9
9