DESCRIPTION

The TS419/TS421 is a monaural audio power amplifier driving in BTL mode a 16 or 32Ω earpiece or receiver speaker. The main advantage of this configuration is to get rid of bulky output capacitors.

■ 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

APPLICATIONS

■ 16/32 ohms earpiece or receiver speaker driver

■ Mobile and cordless phones (analog / digital)

■ PDAs & computers

■ Portable appliances