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參數(shù)資料
| 型號(hào)： | L7554 |
| 英文描述： | L7554 Low-Power SLIC |
| 中文描述： | L7554低功耗用戶(hù)接口 |
| 文件頁(yè)數(shù)： | 9/28頁(yè) |
| 文件大小： | 486K |
| 代理商： | L7554 |
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Lucent Technologies Inc.
9
Data Sheet
March 1997
L7554 Low-Power SLIC
Electrical Characteristics
(continued)
Table 6. Analog Pin Characteristics
1. Loop closure threshold is programmed by resistor R
LCTH
from pin LCTH to pin DCOUT.
2. Ring ground threshold is programmed by resistor R
ICM2
from pin I
CM
to V
CC
.
Table 7. Uncommitted Op Amp Characteristics
Parameter
Min
Typ
Max
Unit
Differential PT/PR Current Sense (DCOUT)
Gain (PT/PR to DCOUT)
Offset Voltage @ I
LOOP
= 0, V
BAT
= –48 V
–119
–200
–125
—
–127
200
V/A
mV
Loop Closure Detector Threshold
1
Programming Accuracy
—
—
±
20
%
Ring Ground Detector Threshold
2
R
ICM
= 83 k
Programming Accuracy
3
—
6
—
10
±
25
k
%
Ring Trip Comparator
Input Offset Voltage
—
—
±
10
mV
RCVN, RCVP
Input Bias Current
—
–0.2
–1
μ
A
Parameter
Min
Typ
±
5
±
10
200
1.5
±
3.5
2.0
Max
Unit
Input Offset Voltage
Input Offset Current
Input Bias Current
Differential Input Resistance
Output Voltage Swing (R
L
= 10 k
)
Output Resistance (A
VCL
= 1)
—
—
—
—
—
—
—
—
mV
nA
nA
M
Vpk
kHz
—
—
—
—
Small Signal GBW
—
700
—
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