TS4990 Datasheet, PDF (1/33 Pages) STMicroelectronics – 1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW STANDBY MODE

TS4990
1.2 W audio power amplifier with active-low standby mode
Features
■ Operating range from V_CC = 2.2 V to 5.5 V
■ 1.2 W output power at V_CC = 5 V, THD = 1%,
F = 1 kHz, with 8 Ω load
■ Ultra-low consumption in standby mode (10 nA)
■ 62 dB PSRR at 217 Hz in grounded mode
■ Near-zero pop and click
■ Ultra-low distortion (0.1%)
■ Unity gain stable
■ Available in 9-bump flip-chip, miniSO-8 and
DFN8 packages
Applications
■ Mobile phones (cellular / cordless)
■ Laptop / notebook computers
■ PDAs
■ Portable audio devices
Description
The TS4990 is designed for demanding audio
applications such as mobile phones to reduce the
number of external components.
This audio power amplifier is capable of delivering
1.2 W of continuous RMS output power into an
8 Ω load at 5 V.
An externally controlled standby mode reduces
the supply current to less than 10 nA. It also
includes an internal thermal shutdown protection.
The unity-gain stable amplifier can be configured
by external gain setting resistors.
TS4990IJT/TS4990EIJT - Flip-chip 9 bumps
Vin+
VCC
STBY
VOUT1 GND
VOUT2
Vin-
GND
BYPASS
TS4990IST - MiniSO-8
TS4990IQT - DFN8
STANDBY 1
BYPASS 2
VIN+ 3
VIN– 4
8 VOUT2
7 GND
6 VCC
5 VOUT1
TS4990ID/TS4990IDT - SO-8
STBY ¹
BYPASS ²
8 VOUT2
7 _GND
VIN+ ³
VIN- ⁴
6 V_CC
5 _VOUT1
August 2011
Doc ID 9309 Rev 13
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www.st.com
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