TS4972_04 Datasheet, PDF (1/30 Pages) STMicroelectronics – 1.2W Audio Power Amplifier with Standby Mode Active High

TS4972
1.2W Audio Power Amplifier with Standby Mode Active High
■ Operating from V_CC = 2.5V to 5.5V
■ Rail-to-rail output
■ 1.2W output power @ Vcc=5V, THD=1%,
F=1kHz, with 8Ω load
■ Ultra low consumption in standby mode
(10nA)
■ 75dB PSRR @ 217Hz from 2.5 to 5V
■ Low pop & click
■ Ultra low distortion (0.05%)
■ Unity gain stable
■ Flip-chip package 8 x 300µm bumps
Description
The TS4972 is an Audio Power Amplifier capable
of delivering 1.6W of continuous RMS ouput
power into a 4Ω load @ 5V.
This Audio Amplifier is exhibiting 0.1% distortion
level (THD) from a 5V supply for a Pout = 250mW
RMS. An external standby mode control reduces
the supply current to less than 10nA. An internal
shutdown protection is provided.
The TS4972 has been designed for high quality
audio applications such as mobile phones and to
minimize the number of external components.
The unity-gain stable amplifier can be configured
by external gain setting resistors.
Applications
■ Mobile phones (cellular / cordless)
■ PDAs
■ Laptop/notebook computers
■ Portable audio devices
Pin Connections (top view)
TS4972JT - FLIP CHIP
7
6
5
Vin⁺
Vcc Stdby
8 Vout1
Vout2 4
Vin
Gnd Bypass
1
2
3
TYPICAL APPLICATION SCHEMATIC
Audio
Input
Rin
Cin
V CC
Rstb
Cfeed
Rfeed
VCC
6
VCC
1 Vin- _-
7 Vin+ ₊
3 Bypass
5 Standby _Bias
-
AV = -1
+
GND
Cb
2
Cs
Vout 1 8
Vout 2 4
RL
8 Ohms
TS4972
Order Codes
Part Number Temperature Range
TS4972IJT
TS4972EIJT¹
-40, +85°C
1) Lead free Flip-Chip part number
Package
Flip-Chip
Packing
Tape & Reel
Marking
4972
October 2004
Revision 2
1/30