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參數(shù)資料
| 型號(hào)： | PSB4851 |
| 英文描述： | Analog Front End for Sophisticated Answering Machine |
| 中文描述： | 模擬前端的精密應(yīng)答機(jī) |
| 文件頁數(shù)： | 39/44頁 |
| 文件大?。?/td> | 752K |
| 代理商： | PSB4851 |
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PSB 4851
Data Sheet
39
09.99
Transmission Characteristics
V
DDD
/
V
DDA
/V
DDP
= 3.0V-3.6V or 4.75V-5.25V;
V
SSD
/
V
SSA
/
V
SSP
= 0 V;
T
A
= 0 to 70 °C
Parameter
Limit Values
min.
0
– 0.25
– 0.25
– 0.25
– 0.25
0
Unit
Test Condition
max.
Attenuation Distortion
@ 0 dBmO
0.25
0.45
0.9
dB
dB
dB
dB
dB
dB
< 200 Hz
200 – 300 Hz
300 – 2400 Hz
2400 – 3000 Hz
3000 – 3400 Hz
> 3400 Hz
receive signal filtering:
4.6 kHz
>8.0 kHz
transmit:
4.6 kHz
>8.0 kHz
500 – 600 Hz
600 – 1000 Hz
1000 – 2600 Hz
2600 – 2800 Hz
0 to – 20dBm0
1)
– 30 dBm0
– 40 dBm0
– 45 dBm0
3 to – 40 dB
– 40 to – 50 dB
– 50 to – 55 dB
receive
transmit
Reference: 0 dBmO
step accuracy
overall accuracy
Out-of-band signals
– 35
– 45
– 35
– 40
750
380
130
750
dB
dB
dB
dB
μ
s
μ
s
μ
s
μ
s
dB
dB
dB
Group delay distortion
@ 0 dBmO
Signal-to-total distortion
(sine signal)
50
39
29
24
– 0.3
– 0.6
– 1.6
1)
For single ended inputs only within gain settings 0 dB to 24 db at V
dd
= 5V and within gain settings 0 dB
to 18 db at V
= 3.3V.
For differential inputs 0 dB to 36 dB.
Gain tracking
(sine signal)
@ – 10 dBmO
Idle-channel noise
(Psophometric)
Channel crosstalk
Programmable gain
0.3
0.6
1.6
– 75
– 66
– 75
0.5
1.0
dB
dB
dB
dBmO
dBmO
dB
dB
dB
– 0.5
– 1.0
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