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參數(shù)資料
| 型號(hào)： | U4087B-FP |
| 英文描述： | Low Voltage Voice Switch Interface Circuit for Hands-free Operation in Telephone |
| 中文描述： | 低壓開(kāi)關(guān)接口電路的語(yǔ)音免提電話的自由運(yùn)作中 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大小： | 115K |
| 代理商： | U4087B-FP |
U4087B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 09-Sep-96
5 (8)
Pin Description
Pin
1
2
3
4
5
6
Symbol
TLI1
TLO1
RLO1
RLI1
GND
CD
Function
Transmit level detector input on the line side
Transmit level detector output on the line side
Receive level detector output on the line side
Receive level detector input on the line side
Ground
Chip Disable
A logic low (< 0.8 V) sets normal operation. A logic high (> 2.0 V) disables the IC to con-
serve power. Input impedance is nominally 90 k .
Supply voltage 2.8 to 7.0 V, approx. @ 1 mA
Receive level detector output on the microphone/speaker side
Receive level detector input on the microphone/speaker side
Positive control output for U4090B
Negative control output for U4090B
Response time
An RC at this pin sets the response time for the circuit to switch modes
It is a system ac ground, supplied by U4090B, V
M
An RC at this pin sets the time constant for the transmit background monitor
Transmit level detector input on the microphone/speaker side
Transmit level detector output on the microphone/speaker side, and input to the transmit
background monitor
7
8
9
10
11
12
V
B
RLO2
RLI2
TLDR
TLDT
C
T
13
14
15
16
V
M
CPT
TLI2
TLO2
VB/2
Absolute Maximum Ratings
Reference point Pin 1, T
amb
= 25
°
C, unless otherwise specified
Parameters
Symbol
V
B
Value
Unit
V
Supply voltage
Voltages:
Pin 7
Pin 6
Pin 13
– 0.3 to + 12
– 0.3 to 6
– 0.3 to (V
B
+ 0.3)
– 55 to + 150
125
– 20 to + 60
V
°
C
°
C
°
C
Storage temperature range
Junction temperature
Ambient temperature range
Power dissipation
T
amb
= 60
°
C
Maximum thermal resistance
Junction ambient
T
stg
T
j
T
amb
SO 16
P
tot
750
mW
SO 16
R
thJA
110
K/W
Operation Recommendation
Parameters
Test conditions / Pin
Symbol
V
B
Min.
3.0
0
– 20
Typ.
–
–
–
Max.
7.0
V
B
+ 60
Unit
V
V
°
C
Supply voltage
CD input Pin 6
Ambient temperature range
Pin 7
T
amb
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