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参数资料
| 型号： | LA8638NV |
| 元件分类： | 模拟运算功能 |
| 英文描述： | COMPANDER, PDSO30 |
| 封装： | SSOP-30 |
| 文件页数： | 16/16页 |
| 文件大小： | 107K |
| 代理商： | LA8638NV |
Pin Number
Pin Name
Pin Voltage
Equivalent Circuit
Description
No. 6627-9/16
LA8638NV
Pin Descriptions
1
GND
Ground for all circuits except BTL amplifier
2
1/2 VCC
VCC/2
Resistance voltage divider pin
29
VREF
VCC/2
Reference voltage for all circuits except
receiver block
2
29
+
–
VCC
100k
100k
A13523
3
CMP-NF
VCC/2
AC feedback control for compressor's
summing amplifier
DC gain: 1 AC gain: Infinite
VREF
IN
VCC
45k
22.5k
22.5k
3
+
–
A13524
4
DT-VREF
1.25 V
Reference voltage for receiver block.
This supplies the bias voltage for pin 5.
4
+
–
VREF2
REGURATOR
A13525
5
RX-IN
1.25 V power
supply
Filter buffer input
6
RX-FIL-OUT
1.25 V
Filter buffer output
5
6
+
–
500
100k
TO DTSH IN
A13526
7
EXP-IN
VCC/2
Expander input. Voltage-current converter
input. Full-wave rectifier input.
8
EXP-RCT
Indeterminate
(when there is
no signal)
Full-wave rectifier output for expander block
(AC smoothing)
7
8
VREF
VCC
15k
30k
15k
+
–
A13527
9
500
500
BIAS CIRCUIT
VCA
ATT CIRCUIT
A13528
9
RX-ATT-ADJ
0.03 V
Pin for setting attenuation for receiver output
level switching
VREF
IN
60k
10
+
–
A13529
10
RX-OUT
VCC/2
Receiver block output
Continued on next page.
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|---|---|
| LA8638V | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Low-voltage Compander IC for Cordless Telephones |
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