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參數資料
| 型號： | L8576B |
| 英文描述： | Dual Ringing SLIC |
| 中文描述： | 雙振鈴用戶接口 |
| 文件頁數： | 12/26頁 |
| 文件大?。?/td> | 583K |
| 代理商： | L8576B |
12
Agere Systems Inc.
Data Sheet
May 2001
L8576B Dual Ringing SLIC
Electrical Characteristics
(continued)
Table 6. Analog Signal Pins
Table 7. ac Feed Characteristics
1. Requires external components connected as shown in the Applications section. Transmission characteristics are specified assuming a 600
resistive termination and
±
1% external resistors.
2. Transmission characteristics are specified assuming a 600
resistive termination; however, feedback using external components allows the
user to adjust the termination impedance from 600
. Any complex impedance R1 + R2 || C between 300
and 1000
can be synthesized
using external components.
3. This parameter is not tested in production. It is guaranteed by design and device characterization.
Parameter
Min
Typ
Max
Unit
Differential PT/PR Current Sense (DC
OUT
)
Gain (PT/PR to DC
OUT
):
Forward Battery (R
GX1
= 16.9 k
, R
GX2
= 7.5 k
)
Reverse Battery (R
GX1
= 16.9 k
, R
GX2
= 7.5 k
)
PT/PR to VITR Gain with
R
GX1
= 16.9 k
, R
GX2
= 7.5 k
:
Forward Battery
Reverse Battery
Loop Closure Detector Threshold:
Programming Accuracy
RCVN, RCVP:
Input Bias Current
Gain RCVP to PT/PR
Gain RCVN to PT/PR
RCVN, RCVP Input Compliance
–235
235
–250
250
–265
265
V/A
V/A
–121
121
–125
125
–129
129
V/A
V/A
—
—
±
20
%
—
11.62
–11.62
–2.5
—
12
–12
—
–1.0
12.38
–12.38
V
CC
μ
A
—
—
V
Parameter
1
Min
Typ
Max
Unit
ac Termination Impedance
2
Total Harmonic Distortion (200 Hz—4 kHz)
3
:
Off-hook
On-hook
Transmit Gain (
= 1 kHz) (See Figure 5.):
Transmit Accuracy in Percent
Transmit Accuracy in dB (relative to 2/3)
Receive Gain (
= 1 kHz) (See Figure 5.):
Receive Accuracy in Percent
Receive Accuracy in dB
Tip/Ring Signal Level (600
reference)
Gain vs. Frequency (transmit and receive; 1 kHz reference)
3
:
200 Hz—3.4 kHz
300 Hz—3.4 kHz
3.4 kHz—20 kHz
3.4 kHz—266 kHz
300
600
1000
—
—
—
—
0.3
1.0
%
%
–3.0
–0.24
0
0
3.0
0.24
%
dB
–3.0
–0.24
—
0
0
—
3.0
0.24
3.14
%
dB
dBm
–1.00
–0.30
–3.0
—
0
0
–0.1
—
0.05
0.05
2.0
2.0
dB
dB
dB
dB
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