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參數(shù)資料
| 型號(hào)： | T7504 |
| 元件分類： | Codec |
| 英文描述： | T7504 and T75504 Quad PCM Codecs with Filters |
| 中文描述： | T7504和T75504四的PCM編解碼器與濾波器 |
| 文件頁數(shù)： | 9/18頁 |
| 文件大?。?/td> | 221K |
| 代理商： | T7504 |
Lucent Technologies Inc.
9
Data Sheet
March 1999
T7504 and T5504 Quad PCM Codecs with Filters
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 = 20 dB
—
Min
—
—
—
Typ
—
—
—
Max
18
19
–68
Unit
dBrnC0
dBrnC0
dBm0p
Transmit Noise
μ
-Law
Transmit Noise
A-Law
Receive Noise
μ
-Law
Receive Noise
A-Law
Noise, Single Frequency
f = 0 kHz—100 kHz
Power Supply Rejection Transmit
N
XP
N
RC
PCM code is alternating positive
and negative zero
PCM code is A-law positive one
—
—
13
dBrnC0
N
RP
—
—
–75
dBm0p
N
RS
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
—
—
–53
dBm0
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
–0.885
—
—
Typ
±
0.04
±
0.04
–0.58
–10.7
—
Max
0.150
0.150
0.010
–9.4
–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
—
—
—
—
–1.8
–0.150
–0.570
–0.885
—
—
Typ
–50
–34
–36
–50
–0.5
±
0.04
±
0.04
–0.58
–10.7
—
Max
–30
–26
–30
–30
0
0.150
0.150
0.010
–9.4
–32
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
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