TS4997 Datasheet, PDF (1/34 Pages) STMicroelectronics – 2 x 1W differential input stereo audio amplifier with programmable 3D effects

TS4997
2 x 1W differential input stereo audio amplifier
with programmable 3D effects
Features
■ Operating range from V_CC= 2.7V to 5.5V
■ 1W output power per channel @ V_CC=5V,
THD+N=1%, R_L=8Ω
■ Ultra low standby consumption: 10nA typ.
■ 80dB PSRR @ 217Hz with grounded inputs
■ High SNR: 106dB(A) typ.
■ Fast startup time: 45ms typ.
■ Pop&click-free circuit
■ Dedicated standby pin per channel
■ Lead-free QFN16 4x4mm package
Applications
■ Cellular mobile phones
■ Notebook and PDA computers
■ LCD monitors and TVs
■ Portable audio devices
Description
The TS4997 is designed for top-class stereo
audio applications. Thanks to its compact and
power-dissipation efficient QFN16 package with
exposed pad, it suits a variety of applications.
With a BTL configuration, this audio power
amplifier is capable of delivering 1W per channel
of continuous RMS output power into an 8Ω load
@ 5V.
3D effects enhancement is programmed through
a two digital input pin interface that allows more
flexibility on each output audio sound channel.
QFN16 4x4mm
Pin connections (top view)
3D0 3D1 BYP VCC
16 15 14 13
LIN- ₁
LIN+ ₂
RIN+ 3
RIN- 4
12 ^LOUT-
11 LOUT+
10 ROUT+
9 ROUT-
56 78
GND GND _{STBYR STBYL}
Each output channel (left and right), also has its
own external controlled standby mode pin to
reduce the supply current to less than 10nA per
channel. The device also features an internal
thermal shutdown protection.
The gain of each channel can be configured by
external gain setting resistors.
February 2007
Rev 2
1/34
www.st.com
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