TS4890 Datasheet, PDF (1/32 Pages) STMicroelectronics – RAIL TO RAIL OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW

TS4890
RAIL TO RAIL OUTPUT 1W AUDIO POWER AMPLIFIER WITH
STANDBY MODE ACTIVE LOW
s OPERATING FROM V_CC = 2.2V to 5.5V
s 1W RAI L TO RAIL OUTPUT POWER @
Vcc=5V, THD=1%, f=1kHz, with 8Ω Load
s ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
s 75dB PSRR @ 217Hz from 5 to 2.2V
s POP & CLICK REDUCTION CIRCUITRY
s ULTRA LOW DISTORTION (0.1%)
s UNITY GAIN STABLE
s AVAILABLE IN SO8, MiniSO8 & DFN8
DESCRIPTION
The TS4890 (MiniSO8 & SO8) is an Audio Power
Amplifier capable of delivering 1W of continuous
RMS. ouput power into 8Ω 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
thermal shutdown protection is also provided.
The TS4890 have 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.
PIN CONNECTIONS (Top View)
TS4890ID, TS4890IDT - SO8
Standby
1
Bypass
2
VIN+
3
VIN-
4
8
VOUT2
7
GND
6
VCC
5
VOUT1
TS4890IST - MiniSO8
Standby
1
Bypass
2
VIN+
3
VIN-
4
8
VOUT2
7
GND
6
VCC
5
VOUT1
TS4890IQT - DFN8
STANDBY 1
BYPASS 2
V_IN+ 3
V_IN- 4
8 V_{OUT 2}
7 GND
6 Vcc
5 V_{OUT 1}
APPLICATIONS
s Mobile Phones (Cellular / Cordless)
s Laptop / Notebook Computers
s PDAs
s Portable Audio Devices
ORDER CODE
Part
Number
TS4890
Temperature
Range
-40, +85°C
Package
S DQ
•
•
•
Marking
4890I
4890
4890
MiniSO & DFN only available in Tape & Reel: with T suffix.
SO is available in Tube (D) and of Tape & Reel (DT)
June 2003
TYPICAL APPLICATION SCHEMATIC
Audio
Input
Rin
Cin
Cfeed
Rfeed Vcc
6
4 Vin- _-
3 Vin+ +
Vcc
2 ^Bypass
1 ^Standby
Bias
Rstb
Cb
7
Cs
Vout1 5
-
Av=-1
+
Vout2 8
RL
8 Ohms
TS4890
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