參數(shù)資料
型號: U4080B
英文描述: Voice-Switched Circuit for Handsfree Operation
中文描述: 語音電路交換的免提操作
文件頁數(shù): 3/15頁
文件大小: 169K
代理商: U4080B
U4080B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 20-May-96
3 (15)
Pin
26
Symbol
RECO
Function
Receive output attenuator.
This pin is normally ac coupled to the
input of the speaker amplifier
(Pin 19 – SAI)
Receive input attenuator.
Input resistance is nominally 5 k
.
Resistor connected from Pin 28 to
ground determines the nominal gain of
the receive attenuator. The receive
channel gain is directly proportional to
the RG resistance.
27
RECI
28
RG
Absolute Maximum Ratings
Reference point Pin 22, T
amb
= 25
°
C, unless otherwise specified
Parameters
Symbol
V+
V
18
V
14
V
24
T
stg
T
j
T
amb
P
tot
Value
14
14
3
V
CC
Unit
V
V
V
°
C
°
C
°
C
Supply voltage
Digital chip select input voltage
Speaker amplifier ground voltage Pin 14
Volume control input voltage
Storage temperature range
Junction temperature
Ambient temperature range
Power dissipation T
amb
= 60
°
C
Pin 16
Pin 18
Pin 24
–40 to +125
125
–20 to +60
1.3
W
Thermal Resistance
Parameters
Symbol
R
thJA
Value
50
Unit
K/W
Junction ambient
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