am79231 ETC-unknow, am79231 Datasheet - Page 15

• Manufacturer Part Number: am79231
• Description: Intelligent Subscriber Line Interface Circuit Islic
• Manufacturer: ETC-unknow

SPECIFICATIONS
Target Specifications (See note 1)
No.
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
Two-wire loop voltage (in-
cluding offset)
Feed resistance per leg at
pins AD & BD
Feed current limit
IMT current
ILG current
Ternary input voltage
boundaries for LD pin.
Mid-level input source
must be Vref.
Logic Inputs P1, P2, P3
VTX output offset
VREF input current
CREF input current
β, DC Ratio of VSAB to
loop voltage:
Fault Indicator Threshold
Gain from VLB pin to A or
B pin
VLB pin input current
ILOOP/IMT
ILONG/ILG
Input current, SA and SB
pins
K1
ISA/IMT
ISB/ILG
VSAB output offset
IMT output offset
ILG output offset
β
=
---------------------- -
V
SA
V
SAB
–
Item
V
SB
Standby mode, open circuit,
|VBH| < 55 V
|VBH| > 55 V
Any Active mode (does not
include OHT),
OHT mode, RL = 600 Ω
I
Standby mode
Feed current
Standby mode, RL = 2200 Ω
Standby mode
Low boundary
High boundary
Input high current
Input low current
Mid-level current
Input high voltage
Input low voltage
Input high current
Input low current
VREF = 1.4 V
CREF = 3.3 V
Tj < 145°C, VSA – VSB = 22 V
Voltage Output on IMT
VLB = VREF ±1 V
ILOOP = 10 mA
ILONG = 10 mA
Active modes
Incremental DC current gain
Disconnect, ISA = 2 mA
Disconnect, ISB = 2 mA
RL = 600 Ω, I
RSN
Standby mode, RL = 600 Ω
A to VBH
B to Ground
= 20 µA
Condition
Am79231 Data Sheet
RSN
= 50 µA
CREF – 1
VBH – 8
0.0088
13.88
TBD
8.64
19.8
44.6
Min
130
–50
275
560
2.0
48
36
43
-3
-1
CREF -
VBH–7
0.0097
0.3 V
TBD
TBD
10.8
Typ
250
108
300
600
500
.05
.09
1.0
51
15
22
34
56
47
51
10
50
30
12
6
0
1
VBH–6
0.0106
CREF
16.13
12.96
Max
55.5
375
325
640
0.6
0.8
+50
3.0
45
3
3
Unit
V/V
A/A
mA
mV
mA
mA
V/V
mA
A/A
A/A
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
V
Ω
V
V
V
V
V
Note
—
—
—
—
3
3
3
3
3
3
15