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TS421IQTSTN/a495avai360MW MONO AUDIO AMPLIFIER WITH STANDBY ACTIVE HIGH


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TS421IQT
360MW MONO AUDIO AMPLIFIER WITH STANDBY ACTIVE HIGH
1/32 OPERATING FROM Vcc=2V to 5.5V STANDBY MODE ACTIVE HIGH (TS419) or
LOW (TS421)� OUTPUT POWER into 16Ω: 367mW @ 5V with 10% THD+N max or 295mW @5V and
110mW @3.3V with 1% THD+N max.� LOW CURRENT CONSUMPTION: 2.5mA max� High Signal-to-Noise ratio: 95dB(A) at 5V� PSRR: 56dB typ. at 1kHz, 46dB at 217Hz� SHORT CIRCUIT LIMITATION� ON/OFF click reduction circuitry� Available in SO8, MiniSO8 & DFN 3x3
DESCRIPTION

The TS419/TS421 is a monaural audio power am-
plifier driving in BTL mode a 16 or 32Ω earpiece or
receiver speaker. The main advantage of this con-
figuration is to get rid of bulky ouput capacitors.
Capable of descending to low voltages, it delivers
up to 220mW per channel (into 16Ω loads) of con-
tinuous average power with 0.2% THD+N in the
audio bandwidth from a 5V power supply.
An externally controlled standby mode reduces
the supply current to 10nA (typ.). The TS419/
TS421 can be configured by external gain-setting
resistors or used in a fixed gain version.
APPLICATIONS
� 16/32 ohms earpiece or receiver speaker driver� Mobile and cordless phones (analog / digital)� PDAs & computers� Portable appliances
ORDER CODE

MiniSO & DFN only available in Tape & Reel with T suffix.
SO is available in Tube (D) and in Tape & Reel (DT)
PIN CONNECTIONS (top view)
TS419TS421

360mW MONO AMPLIFIER WITH STANDBY MODE
June 2003
TS419-TS421
2/32
ABSOLUTE MAXIMUM RATINGS
OPERATING CONDITIONS
All voltage values are measured with respect to the ground pin. Pd has been calculated with Tamb = 25°C, Tjunction = 150°C. TS419 stands 1.5KV on all pins except standby pin which stands 1KV. Attention must be paid to continous power dissipation (VDD x 300mA). Exposure of the IC to a short circuit for an extended time period is
dramatically reducing product life expectancy. The minimum current consumption (I STANDBY ) is guaranteed at VCC (TS419) or GND (TS421) for the whole temperature range. When mounted on a 4-layer PCB For more details on TWU, please refer to application note section on Wake-up time page 28.
TS419-TS421
3/32
FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS

VCC from +5V to +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
APPLICATION COMPONENTS INFORMATION
TYPICAL APPLICATION SCHEMATICS:
TS419-TS421
4/32
ELECTRICAL CHARACTERISTICS

VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified) Guaranteed by design and evaluation.
TS419-TS421
5/32
ELECTRICAL CHARACTERISTICS

VCC = +3.3V, GND = 0V , Tamb = 25°C (unless otherwise specified) 1) All electrical values are guaranted with correlation measurements at 2V and 5V
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