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參數(shù)資料
| 型號(hào)： | AM79231JC |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Intelligent Subscriber Line Interface Circuit (ISLIC) |
| 中文描述： | 智能用戶線接口電路（ISLIC） |
| 文件頁(yè)數(shù)： | 18/28頁(yè) |
| 文件大小： | 278K |
| 代理商： | AM79231JC |
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18
Am79231 Data Sheet
Am79231 Current-Limit Behavior
Am79231 Fault Indications
Notes:
1. Unless otherwise specified, test conditions are: VCC = 5 V, RMG1 = RMG2 = 1 k
, BATH =
–
65 V,
BATL = 36 V, VBL = 34, RRX = 150 k
, RL = 600
, RSA = RSB = 200 k
, RFA = RFB = 50
,
CHP = 22 nF, CAD = CBD = 22 nF, IRSN = 84
μ
A. DC-feed conditions are normally set by the ISLAC
device. When the Am79231 is tested by itself, its operating conditions must be simulated as if it were
connected to an ideal ISLAC device.
2. These tests are performed with the following load impedances:
Frequency < 12 kHz
–
Longitudinal impedance = 500
; metallic impedance = 300
Frequency > 12 kHz
–
Longitudinal impedance = 90
; metallic impedance = 135
3. Not tested or partially tested in production. This parameter is guaranteed by characterization or correlation
to other tests.
4. This parameter is tested at 1 kHz in production. Performance at other frequencies is guaranteed by
characterization.
5. When the Am79231 and ISLAC device is in the anti-sat operating region, this parameter is degraded. The
exact degradation depends on system design.
6.
–
55 dBm gain tracking level not tested in production. This parameter is guaranteed by characterization and
correlation to other tests.
7. This spec is valid from 0 V to VBL or
–
50 V, whichever is lower in magnitude.
SLIC Mode
Condition
Min
Typ
Max
Unit
μ
A
A
Note
Disconnect
Applied fault between ground and T/R
VBH applied to Tip or Ring
Ring Short to GND
Short Tip-to-VBH
Short Ring-to-GND
1
VBH/200 k
34
38
35
100
7
Tip Open
Standby
32
24
26
37
47
44
mA
Fault
Indication
Unit
Note
No Fault
Thermal Shutdown
IMT operates normally (Vref ±1V)
IMT above 2.8 V; ILG operates normally
390 pf
RT Network
30 K
30 K
VREF
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