STMicroelectronics TS421
The TS419 / TS421, is a monaural audio power amplifier driving in BTL mode a 16 or 32 Ω earpiece or receiver speaker. The main advantage of this configuration is to get rid of bulky output capacitors. The TS419 / TS421 can be configured by external gain-setting resistors.| Part No. | TS421 |
|---|---|
| Datasheet | TS421 Download |
| Manufacturer |  STMicroelectronics |
| Description | 360mW mono amplifier |
| Buy | Stock & Price |
FEATURES
● Operating from VCC = 2 V to 5.5 V● Standby mode active high (TS419) or low (TS421)
● Output power into 16 Ω: 367 mW @ 5 V with 10% THD+N max or 295 mW @ 5 V and 110 mW @ 3.3 V with 1% THD+N max.
● Low current consumption: 2.5 mA max.
● High signal-to-noise ratio: 95 dB (A) at 5 V
● PSRR: 56 dB typ. at 1 kHz, 46 dB at 217 Hz
● Short-circuit limitation
● ON/OFF click reduction circuitry
● Available in MiniSO8 and DFN 3x3
APPLICATIONS
● 16 / 32 Ω earpiece or receiver speaker driver● Mobile and cordless phones (analog / digital)
● PDAs & computers
● Portable appliances
DESCRIPTION
Capable of descending to low voltages, it delivers up to 220 mW per channel (into 16 Ω loads) of continuous average power with 0.2% THD+N in the audio bandwidth from a 5 V power supply. An externally controlled standby mode reduces the supply current to 10 nA (typ.). DS3048 - Rev 6 - February 2023 For further information contact your local STMicroelectronics sales office. TS419, TS421 Maximum ratings 1 Maximum ratings Table 1.
