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TS4890| Datasheet

By datasheet - April 3rd, 2008

TS4890, TS4890ID, TS4890IDT, TS4890IQT, TS4890IST

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TS4890
RAIL TO RAIL OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW
s OPERATING FROM VCC = 2.2V to 5.5V s 1W RAI L TO RAIL OUTPUT POWER @
Vcc=5V, THD=1%, f=1kHz, with 8 Load MODE (10nA) PIN CONNECTIONS (Top View)
TS4890ID, TS4890IDT - SO8
Standby Bypass VIN+ VIN1 2 3 4 8 7 6 5 VOUT2 GND VCC VOUT1

s ULTRA LOW CONSUMPTION IN STANDBY 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 8 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. APPLICATIONS
TYPICAL APPLICATION SCHEMATIC

TS4890IST - MiniSO8

Standby Bypass VIN+ VIN-

1 2 3 4

8 7 6 5

VOUT2 GND VCC VOUT1

TS4890IQT - DFN8

STANDBY BYPASS VIN+ VIN-

1 2 3 4

8 7 6 5

VOUT 2 GND Vcc VOUT 1

s Mobile Phones (Cellular / Cordless) s Laptop / Notebook Computers s PDAs s Portable Audio Devices
ORDER CODE
Part Temperature Number Range Package Marking S TS4890 -40, +85 C D Q 4890I 4890 4890

Cfeed Rfeed Vcc 6 Audio Input Cin Vcc Cs

Rin

4 3

VinVin+

+

Vout1 5

RL 8 Ohms Vcc 2 1 Rstb Cb Bypass Standby Bias GND TS4890 Av=-1 + Vout2 8

7

MiniSO & DFN only available in Tape & Reel: with T suffix. SO is available in Tube (D) and of Tape & Reel (DT)

June 2003

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