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參數資料
| 型號： | L9216A |
| 英文描述： | CAP CER 270PF 3.15KVDC R3 RAD |
| 中文描述： | 短環振鈴用戶接口與地面開始 |
| 文件頁數： | 17/48頁 |
| 文件大小： | 1062K |
| 代理商： | L9216A |
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Preliminary Data Sheet
September 2001
Short-Loop Ringing SLIC with Ground Start
L9216A/G
Agere Systems Inc.
17
Electrical Characteristics
(continued)
Table 13. ac Feed Characteristics
1. Set externally either by discrete external components or a third- or fourth-generation codec. Any complex impedance R1 + R2 || C between
150
and 1400
can be synthesized.
2. This parameter is not tested in production. It is guaranteed by design and device characterization.
3. VITR transconductance depends on the resistor from ITR to VTX. This gain assumes an ideal 4750
, the recommended value. Positive cur-
rent is defined as the differential current flowing from PT to PR.
Parameter
Min
150
Typ
600
Max
1400
Unit
ac Termination Impedance
1
Total Harmonic Distortion (200 Hz
—4 kHz)
2
:
Off-hook
On-hook
Transmit Gain (f = 1004 Hz, 1020 Hz, current limit)
3
:
PT/PR Current to VITR
Receive Gain, f = 1004 Hz, 1020 Hz Open Loop:
RCVP or RCVN to PT—PR (gain of 8 option, L9216A)
RCVP or RCVN to PT—PR (gain of 2 option, L9216G)
Gain vs. Frequency (transmit and receive)
2
600
Termination,
1004 Hz, 1020 Hz Reference:
200 Hz—300 Hz
300 Hz—3.4 kHz
3.4 kHz—20 kHz
20 kHz—266 kHz
Gain vs. Level (transmit and receive)
2
0 dBV Reference:
–55 dB to +3.0 dB
Idle-channel Noise (tip/ring) 600
Termination:
Psophometric
C-Message
3 kHz Flat
Idle-channel Noise (VTX) 600
Termination:
Psophometric
C-Message
3 kHz Flat
—
—
—
—
0.3
1.0
%
%
300 – 3%
300
300 + 3%
V/A
7.76
1.94
8
2
8.24
2.06
—
—
–0.3
–0.05
–3.0
—
0
0
0
—
0.05
0.05
0.05
2.0
dB
dB
dB
dB
–0.05
0
0.05
dB
—
—
—
–82
8
—
–77
13
20
dBmp
dBrnC
dBrn
—
—
—
–82
8
—
–77
13
20
dBmp
dBrnC
dBrn
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