參數(shù)資料
型號(hào)： L9219A
英文描述： CAP CER 390PF 3.15KVDC R3 RAD
中文描述： 低成本線接口，具有反向電池和雙電流限制
文件頁(yè)數(shù)： 10/30頁(yè)
文件大?。?/td> 397K
代理商： L9219A
10
Agere Systems Inc.
Data Sheet
November 2001
with Reverse Battery and Dual Current Limit
L9219A/G Low-Cost Line Interface
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. This parameter is not tested in production. It is guaranteed by design and device characterization.
3. I
N
is the sourcing current at RTSN. Guaranteed if I
N
is within 5
μ
A to 30
μ
A.
Parameter
Min
Typ
Max
Unit
Differential PT/PR Current Sense (DCOUT):
Gain (PT/PR to DCOUT)
Offset Voltage at I
LOOP
= 0
121
–100
125
—
129
100
V/A
mV
Loop Closure Detector Threshold (RLCTH = 22.1 k
)
1
:
On-hook to Off-hook Threshold (scan mode)
Off-hook to On-hook Threshold (active mode)
8.8
6.0
—
—
13.6
10.2
mA
mA
Ring Trip Comparator:
Input Offset Voltage
2
Internal Voltage Source
Current at Input RTSP
3
—
–9.1
I
N
– 0.5
±10
–8.6
I
N
—
–8.1
I
N
+ 0.6
mV
V
μ
A
RCVN, RCVP:
Input Bias Current
Input Resistance
—
—
–0.2
1
–1
—
μ
A
M
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