ISSI IS31AP4912 Manual

ISSI IS31AP4912 Manual

Stereo headphone driver evaluation board

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IS31AP4912 Stereo Headphone Driver Evaluation Board Guide

Description

The
IS31AP4912
is
stereo
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.

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
Quick Start

Figure 1: Photo of IS31AP4912 Evaluation Board

Ordering Information
Part No.
IS31AP4912-UTLS2-EB -40°C to +85°C (Industrial) UTQFN-12, Lead-free
For pricing, delivery, and ordering information, please contacts ISSI's analog marketing
team at
analog_mkt@issi.com
Integrated Silicon Solution, Inc. – www.issi.com
RevA, 01/10/2013
Recommended Equipment
headphone
drivers
Absolute Maximum Ratings
Caution: Do not exceed the conditions listed above; otherwise
the board will be damaged.

Procedure

The IS31AP4912 Evaluation board is fully assembled
and tested. Follow the steps listed below to verify
board operation.
Caution: Do not turn on the power supply until all connections
are completed.
1)
2)
3)
4)
5)
Temperature Range
Table 1: Ordering Information
or (408) 969-6600
5.0V, 2A power supply
Audio source (i.e. MP3 player, Notebook PC, etc.)
Headphone (32 )
≤ 5.5V power supply
Connect headphone (32 ) to the connector (HP
JACK).
Connect the ground terminal of the power supply
to the GND and the positive terminal to the VCC.
Or connect DC power to connector (DC IN).
Connect the audio sources to the INR terminal
(right channel) and INL terminal (left channel); or
connect audio sources to the connector (AUDIO
IN).
Turn on the power supply, and pay attention to the
supply current. If the current exceeds 200mA,
please check for circuit fault.
Turn on the audio sources.
Package
1

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Summary of Contents for ISSI IS31AP4912

  • Page 1: Absolute Maximum Ratings

    Part No. Temperature Range Package IS31AP4912-UTLS2-EB -40°C to +85°C (Industrial) UTQFN-12, Lead-free Table 1: Ordering Information For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at analog_mkt@issi.com or (408) 969-6600 Integrated Silicon Solution, Inc. – www.issi.com RevA, 01/10/2013...
  • Page 2: Shutdown Mode

    IS31AP4912 Stereo Headphone Driver Evaluation Board Guide Gain Setting High Pass Filter The input resistors R (R2, R3) and feedback resistors The input capacitors (C6, C7) and input resistors (R2, (R1, R5) set the gain of the amplifier according to R3) form a high pass filter with the corner frequency, f Equation (1).
  • Page 3: Bill Of Materials

    IS31AP4912 Stereo Headphone Driver Evaluation Board Guide Bill of Materials Name Symbol Description Supplier Part No. Audio Amplifier Stereo Headphone Driver ISSI IS31AP4912 Resistors R1,R2,R3,R5 RES,20k,1/16W,±5%,SMD Resistor RES,100k,1/16W,±5%,SMD Capacitor CAP,10µF,16V,±20%,SMD Capacitors C2,C10 CAP, 6.8pF,16V,±20%,SMD Capacitor CAP,1µF,16V,±20%,SMD Capacitor CAP,0.1µF,16V,±20%,SMD Capacitors C5,C8,C9 CAP,2.2µF,16V,±20%,SMD...
  • Page 4 IS31AP4912 Stereo Headphone Driver Evaluation Board Guide Figure 3: Board Component Placement Guide -Top Layer Figure 4: Board PCB Layout- Top Layer Integrated Silicon Solution, Inc. – www.issi.com RevA, 01/10/2013...
  • Page 5 IS31AP4912 Stereo Headphone Driver Evaluation Board Guide Figure 5: Board Component Placement Guide -Bottom Layer Figure 6: Board PCB Layout-Bottom Layer Integrated Silicon Solution, Inc. – www.issi.com RevA, 01/10/2013...
  • Page 6 Copyright © 2013 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein.

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