TS4851, TS4851EIJT

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TS4851
Mono 1W Speaker and Stereo 160mW Headset BTL Drivers with Digital Volume Control
Operating from VCC = 3V to 5.5V Rail to rail input/output Speaker driver with 1 W output @ Vcc = 5V, THD+N = 1%, F = 1kHz, 8 load Headset drivers with 160 mW output @ Vcc = 5V, THD+N = 1%, F = 1kHz, 32 load Headset output is 30mW in stereo @ Vcc = 3V THD+N < 0.5% Max @ 20mW into 32 BTL, 50Hz < Frequency < 20kHz 32-step digital volume control from 34.5dB to +12dB +6dB power up volume and full standby 8 different output modes Pop & click reduction circuitry Low shutdown current (< 100nA) Thermal shutdown protection Flip-chip package 18 x 300um bumps

Pin Connections (top view)

TS485IJT - Flip-chip TS485EIJT - Lead free Flip-chip

Pin Out (top view)

Description
The TS4851 is a low power audio amplifier that can drive either both a mono speaker or a stereo headset. To the speaker, it can deliver 400 mW (typ.) of continuous RMS output power into an 8 load with a 1% THD+N value. To the headset driver, the amplifier can deliver 30 mW (typ.) per channel of continuous average power into a stereo 32 bridged-tied load with 0.5% THD+N @ 3.3V. This device features a 32-step digital volume control and 8 different output selections. The digital volume and output modes are controlled through a three-digit SPI interface bus.
R OUT< R OUT + R IN L IN PHONE IN SPKR OUT+ BYPASS GND VCC SPKR OUT CLK VCC GND L OUT + DATA L OUT -

NC ENB

Applications
Mobile Phones

Order Codes
Part Number
TS4851IJT TS4851EIJT

Temperature Range
-40, +85 C

Package
Flip-Chip Lead free Flip-Chip

Packaging
Tape & Reel

Marking
A51 A51

J = Flip Chip Package - only available in Tape & Reel (JT))

March 2005

Revision 5

1/28

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TS4851 DATASHEET