TS488| Datasheet

TS488, TS488IQT, TS488IST, TS489IQT, TS489IST, ts489

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TS488-TS489
Pop-free 120mW stereo headphone amplifier
Features

TS488IST - MiniSO-8
OUT (1) VIN (1) BYPASS GND 1 2 3 4 8 7 6 5 VCC OUT (2) VIN (2) SHUTDOWN

Pop and click noise protection circuitry Operating range from VCC = 2.2V to 5.5V Standby mode active low (TS488) or high (TS489) Output power: 120mW @5V, into 16 with 0.1% THD+N max (1kHz) 55mW @3.3V, into 16 with 0.1% THD+N max (1kHz) Low current consumption: 2.7mA max @5V Ultra low standby current consumption: 10nA typical High signal-to-noise ratio High crosstalk immunity: 102dB (F = 1kHz) PSRR: 70dB typ. (F = 1kHz), inputs grounded @5V Unity-gain stable Short-circuit protection circuitry Available in lead-free MiniSO-8 & DFN8 2mm x 2mm

TS488IQT - DFN8
Vcc OUT (1) VIN (1) Bypass

1 2 3 4

8 7 6

OUT (2) VIN (2) Shutdown

5 GND

TS489IST - MiniSO-8
OUT (1) VIN (1) BYPASS GND 1 2 3 4 8 7 6 5 VCC OUT (2) VIN (2) SHUTDOWN

TS489IQT - DFN8
Vcc

1 2 3 4

8 7 6

OUT (2) VIN (2) Shutdown

Description
The TS488/9 is an enhancement of TS486/7 that eliminates pop and click noise and reduces the number of external passive components. The TS488/9 is a dual audio power amplifier capable of driving, in single-ended mode, either a 16 or a 32 stereo headset. Capable of descending to low voltages, it delivers up to 31mW per channel (into 16 loads) of continuous average power with 0.1% THD+N in the audio bandwidth from a 2.5V power supply. An externally-controlled standby mode reduces the supply current to 10nA (typ.). The unity gain stable TS488/9 is configured by external gainsetting resistors.

OUT (1) VIN (1) Bypass

5 GND

Applications

Headphone amplifier Mobile phone, PDA, computer motherboard High-end TV, portable audio player

September 2006

Rev 4

1/32
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