TS4902 Datasheet, PDF (1/19 Pages) STMicroelectronics – 300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW

TS4902
300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER
WITH STANDBY MODE ACTIVE LOW
s OPERATING FROM V_CC = 2.2V to 5.5V
s 0.7W OUTPUT POWER @ Vcc=5V, THD=1%,
f=1kHz, with an 8Ω load
s 0.3W OUTPUT POWER @ Vcc=3.3V,
THD=1%, f=1kHz, with an 8Ω load
s ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
s 77dB PSRR @ 217Hz from 5V to 2.2V
s ULTRA LOW POP & CLICK
s ULTRA LOW DISTORTION (0.1%)
s UNITY GAIN STABLE
s AVAILABLE IN MiniSO8 & SO8
DESCRIPTION
The TS4902 is an audio power amplifier designed
to provide the best price to power ratio while pre-
serving high audio quality.
Available in MiniSO8 & SO8 package, it is capable
of delivering up to 0.7W of continuous RMS ouput
power into an 8Ω load @ 5V.
TS4902 is also exhibiting an outstanding 0.1%
distortion level (THD) from a 5V supply for a Pout
of 200mW RMS.
An externally controlled standby mode reduces
the supply current to less than 10nA. It also in-
cludes an internal thermal shutdown protection.
The unity-gain stable amplifier can be configured
by external gain setting resistors.
APPLICATIONS
s Mobile Phones (Cellular / Cordless)
s PDAs
s Portable Audio Devices
ORDER CODE
Part Number
TS4902IST
TS4902ID
Temperature
Range
-40, +85°C
Package
ST D
•
•
S = MiniSO Package (MiniSO) is only available in Tape & Reel (ST)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
January 2002
PIN CONNECTIONS (top view)
TS4902IS-TS4902IST - MiniSO8
Standby
1
Bypass
2
VIN+
3
VIN-
4
8
VOUT2
7
GND
6
VCC
5
VOUT1
TS4902ID-TS4902IDT - SO8
Standby
1
Bypass
2
VIN+
3
VIN-
4
8
VOUT2
7
GND
6
VCC
5
VOUT1
TYPICAL APPLICATION SCHEMATIC
Audio
Input
Rin
Cin
VCC
Rstb
Cfeed
Rfeed _VCC
6
V
4 Vin- _-
C
3 Vin+ ₊
Cs
Vout 1 5
2 Bypass
1 Standby _Bias
-
AV = -1
+
GND
Cb
7
Vout 2 8
TS4902
RL
8 Ohms
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