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參數(shù)資料
| 型號： | 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)： | 8/44頁 |
| 文件大?。?/td> | 752K |
| 代理商： | PSB4851 |
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PSB 4851
Data Sheet
8
09.99
23
RST
I
-
Reset:
Active high reset signal.
Auxiliary Input:
Single ended analog input (e.g. line in)
Microphone Input 1:
This input provides a highly symmetrical
differential input for commonly used telephone
microphones.
Microphone Input 2:
This input provides a highly symmetrical
differential input for commonly used telephone
microphones.
Auxiliary Output:
Single ended analog output (e.g line out).
Handset Earpiece Output:
Differential outputs which can drive common
handset earpiece transducers (200
) directly.
Loudspeaker Output:
Differential outputs which can drive a 50
loudspeaker at 5V or a 25
loudspeaker at
3.3V directly. A piezo transducer can be used
for ringing instead of the loudspeaker.
Reference Bandgap Voltage
Connection to external 22 nF capacitor for low
pass filtering.
Reference Voltage (2.4 V):
Output for biasing external circuitry, e.g.
electret microphone. Connection to external
100 nF capacitor.
10
AXI
I
-
13
14
MIN1
MIP1
I
I
-
11
12
MIN2
MIP2
I
I
-
21
AXO
O
0 V
19
20
HOP
HON
O
O
0 V
0 V
16
18
LSP
LSN
O
0 V
0 V
8
V
REFBG
O
0 V
9
V
REF
O
0 V
Table 1-1
Pin Definitions and Functions
Pin No.
P-DSO-28-1
Symbol
Dir.
Reset Function
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