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 O or a 32 O stereo headset.Capable of descending to low voltages, it delivers up to 31 mW per channel (into 16 O loads) of continuous average power with 0.1% THD+N in the audio bandwidth from a 2.5 V power supply.An externally-controlled standby mode reduces the supply current to 10 nA (typ.). The unity gain stable TS488/9 is configured by external gain-setting resistors.
Pop and click noise protection circuitry
Operating range from VCC = 2.2 V to 5.5 V
Standby mode active low (TS488) or high (TS489)
Output power:
120 mW at 5 V, into 16 O with 0.1% THD+N max (1 kHz)
55 mW at 3.3 V, into 16 O with 0.1% THD+N max (1 kHz)
Low current consumption: 2.7 mA max at 5 V
Ultra-low standby current consumption: 10 nA typical
High signal-to-noise ratio
High crosstalk immunity: 102 dB (F = 1 kHz)
PSRR: 70 dB typ. (F = 1 kHz), inputs grounded at 5 V
Unity-gain stable
Short-circuit protection circuitry
Available in lead-free MiniSO-8 & DFN8 2 mm x 2 mm
Headphone amplifiers
Mobile phones, PDAs, computer motherboards
High-end TVs, portable audio players
