U4080B Datasheet, PDF (3/15 Pages) TEMIC Semiconductors – Voice-Switched Circuit for Handsfree Operation

Pin Symbol
Function
26 RECO Receive output attenuator.
This pin is normally ac coupled to the
input of the speaker amplifier
(Pin 19 – SAI)
27 RECI Receive input attenuator.
Input resistance is nominally 5 kΩ.
28 RG 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.
U4080B
Absolute Maximum Ratings
Reference point Pin 22, T_amb = 25°C, unless otherwise specified
Parameters
Supply voltage
Pin 16
Digital chip select input voltage Pin 18
Speaker amplifier ground voltage Pin 14
Volume control input voltage Pin 24
Storage temperature range
Junction temperature
Ambient temperature range
Power dissipation T_amb = 60°C
Symbol
Value
Unit
V+
14
V
V₁₈
14
V
V₁₄
3
V
V₂₄
V_CC
°C
T_stg
– 40 to + 125
°C
T_j
125
°C
T_amb
– 20 to + 60
P_tot
1.3
W
Thermal Resistance
Junction ambient
Parameters
Symbol
R_thJA
Value
50
Unit
K/W
TELEFUNKEN Semiconductors
3 (15)
Rev. A1, 20-May-96
Preliminary Information