IS31AP4912-UTLS2-TR Datasheet IS31AP4912-UTLS2-TR | P1-P3

IS31AP4912

Integrated Silicon Solution, Inc. – www.issi.com 1

Rev. C, 12/23/2015

STEREO HEADPHONE DRIVER

January 2016

GENERAL DESCRIPTION

The IS31AP4912 is stereo headphone drivers

designed to allow the removal of the output

DC-blocking capacitors for reduced component count

and cost. The IS31AP4912 is ideal for small portable

electronics where size and cost are critical design

parameters.

The IS31AP4912 integrates click-and-pop suppression

circuitry and thermal protect circuit. The gain of the

amplifier is adjusted via external resistors.

IS31AP4912 is available in UTQFN-12 (2mm × 2mm)

packages. It operates from 2.7V to 5.5V over the

temperature range of -40°C to +85°C.

FEATURES

 No output DC-blocking capacitors

 Supply voltage from 2.7V ~ 5.5V

 Low output noise (7µV)

 High SNR (103dB)

 -95dB PSRR

 Thermal protect circuit

 Integrated click-and-pop suppression circuitry

 UTQFN-12 (2mm × 2mm) package

APPLICATIONS

 Cellular handsets and PDAs

 Notebook PC

 MP3

 Portable gaming

TYPICAL APPLICATION CIRCUIT

Figure 1 Typical Application Circuit

Note: The SGND and PGND pins of the IS31AP4912 must be routed separately back to the decoupling capacitor in order to provide proper

device operation. If the SGND and PGND pins are connected directly to each other, the part functions without risk of failure, but the noise and

THD performance do not meet the specifications.

IS31AP4912

Integrated Silicon Solution, Inc. – www.issi.com 2

Rev. C, 12/23/2015

PIN CONFIGURATION

Package Pin Configuration (Top View)

UTQFN-12

INR

INL

OUTR

VREF

VCC

PIN DESCRIPTION

No. Pin Description

1 CN Charge pump flying capacitor negative terminal.

2 INR Right channel audio input.

3 INL Left channel audio input.

4 OUTL Left channel audio output.

5 SDB Shutdown control terminal, active low.

6 SGND Signal Ground.

7 VCC Supply voltage.

8 VREF

Internal produced supply voltage for charge pump and

audio power amplifier.

9 OUTR Right channel audio output.

10 CP Charge pump flying capacitor positive terminal.

11 PGND Power ground.

12 VSS Output from charge pump.

IS31AP4912

Integrated Silicon Solution, Inc. – www.issi.com 3

Rev. C, 12/23/2015

ORDERING INFORMATION

Industrial Range: -40°C to +85°C

Order Part No. Package QTY/Reel

IS31AP4912-UTLS2-TR UTQFN-12, Lead-free 3000

timewithoutnotice.ISSIassumesnoliabilityarisingoutoftheapplicationoruseofanyinformation,productsorservicesdescribedherein.Customersare

advisedto

obtainthelatestversionofthisdevicespecificationbeforerelyingonanypublishedinformationandbeforeplacingordersforproducts.

IntegratedSiliconSolution,Inc.doesnotrecommendtheuseofanyofitsproductsinlifesupportapplicationswherethefailureormalfunctionofthe

productcanreasonablybeexpected

tocausefailureofthelifesupportsystemortosignificantlyaffectitssafetyoreffectiveness.Productsarenot

authorizedforuseinsuchapplicationsunlessIntegratedSiliconSolution,Inc.receiveswrittenassurancetoitssatisfaction,that:

a.)theriskofinjuryordamagehasbeenminimized;

b.)theuserassume

allsuchrisks;and

c.)potentialliabilityofIntegratedSiliconSolution,Incisadequatelyprotectedunderthecircumstances

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IS31AP4912-UTLS2-TR

Mfr. #:

Buy IS31AP4912-UTLS2-TR

Manufacturer:

ISSI

Description:

Audio Amplifiers Hi Quality Stereo Heaphone Drvr

Lifecycle:

New from this manufacturer.

Delivery:

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IS31AP4912-UTLS2-TR