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參數(shù)資料
| 型號： | T7503 |
| 元件分類： | Codec |
| 英文描述： | T7503 Dual PCM Codec with Filters |
| 中文描述： | T7503雙PCM編解碼器與濾波器 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 417K |
| 代理商： | T7503 |
8
Lucent Technologies Inc.
Data Sheet
February 1998
T7503 Dual PCM Codec with Filters
Transmission Characteristics
(continued)
ac Transmission Characteristics
(continued)
Table 9. Noise
Table 10. Receive Gain Relative to Gain at 1.02 kHz
Table 11. Transmit Gain Relative to Gain at 1.02 kHz
Parameter
Symbol
N
XC
Test Conditions
—
Input amplifier gain = 36 dB
PCM code is alternating positive
and negative zero.
f = 0 kHz—100 kHz,
VF
X
IN = 0 Vrms, measurement at
VF
R
O, D
R
= D
X
V
DD
= 5.0 Vdc + 100 mVrms:
f = 0 kHz—4 kHz
f = 4 kHz—50 kHz
PCM code is positive one LSB.
V
DD
= 5.0 Vdc + 100 mVrms:
f = 0 kHz—4 kHz
f = 4 kHz—25 kHz
f = 25 kHz—50 kHz
0 dBm0, 300 Hz—3400 Hz input
PCM code applied:
4600 Hz—7600 Hz
7600 Hz—8400 Hz
8400 Hz—50 kHz
Min
—
—
—
Typ
13
16
6
Max
18
19
13
Unit
dBrnC0
dBrnC0
dBrnC0
Transmit Noise
μ
-Law
Receive Noise
μ
-Law
Noise, Single Frequency
N
RC
N
RS
—
—
–53
dBm0
Power Supply Rejection Transmit
PSR
X
36
30
—
—
—
—
dB
dB
Power Supply Rejection Receive
PSR
X
36
40
30
—
—
—
—
—
—
dB
dB
dB
Spurious Out-of-Band Signals at
VF
R
O Relative to Input
SOS
—
—
—
—
—
—
–30
–40
–30
dB
dB
dB
Frequency (Hz)
Below 3000
3140
3380
3860
4600 and above
Min
–0.150
–0.570
–0.735
—
—
Typ
±
0.04
±
0.04
–0.50
–10.70
—
Max
0.150
0.150
0.010
–9.400
–28
Unit
dB
dB
dB
dB
dB
Frequency (Hz)
16.67
40
50
60
200
300 to 3000
3140
3380
3860
4600 and above
Min
—
—
—
—
–1.800
–0.150
–0.570
–0.735
—
—
Typ
–50
–34
–36
–50
–0.5
±
0.04
±
0.04
–0.50
–10.70
—
Max
–30
–26
–30
–30
0
0.150
0.150
0.010
–9.400
–32
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
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