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AM79R70 Datasheet(PDF) 8 Page - Advanced Micro Devices

Part # AM79R70
Description  Ringing Subscriber Line Interface Circuit
PDF  20 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79R70 Datasheet(HTML) 8 Page - Advanced Micro Devices

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8
Am79R70 Data Sheet
ELECTRICAL CHARACTERISTICS (CONTINUED)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Line Characteristics
IL, Loop-current accuracy
IL in constant-current region,
B2EN = 0
0.9IL
IL
1.1IL
mA
IL, Long loops, Active state
RLDC = 600 Ω, RSGL = open
RLDC = 750 Ω, RSGL = short
20
20
21.7
IL, Accuracy, Standby state
0.8IL
IL
1.2IL
IL = constant-current region
TA = 25°C
18
27
39
ILLIM
Active, A and B to ground
OHT, A and B to ground
55
55
110
4
IL, Loop current, Open Circuit state
RL = 0
100
µA
IA, Pin A leakage, Tip Open state
RL = 0
100
IB, Pin B current, Tip Open state
B to ground
34
mA
VA, Standby, ground-start signaling
A to –48 V = 7 k
Ω,
B to ground = 100
Ω
–7.5
–5
V
4
VAB, Open Circuit voltage
42
7
Power Supply Rejection Ratio (VRIPPLE = 100 mVrms), Active Normal State
VCC
50 Hz to 3400 Hz
33
50
dB
5
VNEG
50 Hz to 3400 Hz
30
40
VBAT1
50 Hz to 3400 Hz
30
50
VBAT2
50 Hz to 3400 Hz
30
50
Power Dissipation
On hook, Open Circuit state
VBAT1
48
100
mW
On hook, Standby state
VBAT2
55
80
9
On hook, OHT state
VBAT1
200
300
On hook, Active state
VBAT1
220
350
Off hook, Standby state
VBAT1 or VBAT2
RL = 300 Ω
2000
2800
9
Off hook, OHT state
VBAT1
RL = 300 Ω
2000
2200
Off hook, Active state
VBAT2
RL = 300 Ω
550
750
Supply Currents
ICC, On-hook VCC supply current
Open Circuit state
Standby state
OHT state
Active state–normal
3.0
3.2
6.2
6.5
4.5
5.5
8.0
9.0
mA
INEG, On-hook VNEG supply current
Open Circuit state
Standby state
OHT state
Active state–normal
0.1
0.1
0.7
0.7
0.2
0.2
1.1
1.1
IBAT, On-hook VBAT supply current
Open Circuit state
Standby state
OHT state
Active state–normal
0.45
0.6
2.0
2.7
1.0
1.5
4.0
5.0
I
L
V
BAT1
10 V
–
R
L
400
+
--------------------------------------
=



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