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UTC34119
DESCRIPTION
LI NEAR I NTEGRATED CI RCUI T
LOW POWER AUDIO AMPLIFIER
The UTC34119 is a low power audio amplifier integrated circuit intended (primarily) for the telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages. Coupling Capacitor to the speaker are not required. Open loop gain is 80dB, and the closed loop gain is set with two external resistors. A chips Disable pin permits pow.
LOW POWER AUDIO AMPLIFIER
www.DataSheet4U.com
UTC34119
DESCRIPTION
LI NEAR I NTEGRATED CI RCUI T
LOW POWER AUDIO AMPLIFIER
The UTC34119 is a low power audio amplifier integrated circuit intended (primarily) for the telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages. Coupling Capacitor to the speaker are not required. Open loop gain is 80dB, and the closed loop gain is set with two external resistors. A chips Disable pin permits powering down and/or muting the input signal.
FEATURES
*Wide operating supply voltage: Vcc=2~16V *Low quiescent supply current(Icc=2.7mA,typical) *Medium output power Po=250mW at Vcc=6V,RL=32ohm ,Thd=10% *Load Impedance range(8 ohms to 100 ohm) *Low distortion *Mute function(Icc=65µA, typical) *Minimum number of external parts required.
DIP-8
BLOCK DIAGRAM
Inverting Input NonInverting Input
4 3
Amp 1 R R
5
Output 1
Amp 2
8 1
Output 2
Vcc
6
Bias
MUTE
2
Ripplie Rejection
7
GND
YOUW ANG ELECTRONI CS CO. LTD
1
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UTC34119
Characteristic
Supply Voltage Output Current Maximum input ,ripple rejection, Mute pin voltage Applied output voltage(output pin when disabled) Junction Temperature
LI NEAR I NTEGRATED CI RCUI T
Symbol
Vcc Io Vi(max) Vo Tj
ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
Value
-1.0~+18 ±250 -1.0~Vcc+1.0 -1.0~Vcc+1.0 -55 ~ +150
Unit
V mA V V °C
PIN DESCRIPTION
Pin No.
1
Symbol
Mute
Description
This pin can be used to power down the IC to converse p.