TS419, TS419-2IST, TS419-4IST, TS419-8IST, TS419ID, TS419IDT, TS419IQT, TS419IST, TS421, TS421-2IQT, TS421-2IST, TS421-4IST, TS421-8IST, TS421ID, TS421IDT, TS421IQT, TS421IST

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TS419 TS421
360mW MONO AMPLIFIER WITH STANDBY MODE
s OPERATING FROM Vcc=2V to 5.5V s STANDBY MODE ACTIVE HIGH (TS419) or s OUTPUT POWER into 16: 367mW @ 5V
with 10% THD+N max or 295mW @5V and 110mW @3.3V with 1% THD+N max. s LOW CURRENT CONSUMPTION: 2.5mA max s High Signal-to-Noise ratio: 95dB(A) at 5V s PSRR: 56dB typ. at 1kHz, 46dB at 217Hz s SHORT CIRCUIT LIMITATION s ON/OFF click reduction circuitry s Available in SO8, MiniSO8 & DFN 3x3 DESCRIPTION The TS419/TS421 is a monaural audio power amplifier driving in BTL mode a 16 or 32 earpiece or receiver speaker. The main advantage of this configuration is to get rid of bulky ouput capacitors. Capable of descending to low voltages, it delivers up to 220mW per channel (into 16 loads) of continuous 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 s 16/32 ohms earpiece or receiver speaker driver s Mobile and cordless phones (analog / digital) s PDAs & computers s Portable appliances ORDER CODE

Part Number Temp. Range: I TS419IQT, TS419-xIQT: DFN8

PIN CONNECTIONS (top view)
TS419IDT: SO8 TS419IST, TS419-xIST: MiniSO8

LOW (TS421)

Standby Bypass VIN+ VIN-

1 2 3 4

8 7 6 5

VOUT2 GND VCC VOUT1

GND VOUT 2 STANDBY BYPASS

1 2 3 4

8 7 6 5

Vcc VOUT 1 VINVIN+

TS421IDT: SO8 TS421IST, TS421-xIST: MiniSO8

Package
Gain D tba tba tba tba tba tba tba tba tba tba tba tba S Q external external external x2/6dB x4/12dB x8/18dB external x2/6dB x4/12dB x8/18dB TS419I TS421I K19A K19B K19C K19D K21A K21B K21C K21D Marking TS421IQT, TS421-xIQT: DFN8

TS419 TS421 TS419 TS419-2 TS419-4 -40, +85 C TS419-8 TS421 TS421-2 TS421-4 TS421-8

GND VOUT 2 STANDBY BYPASS

1 2 3 4

8 7 6 5

Vcc VOUT 1 VINVIN+

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

June 2003

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TS419 DATASHEET