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Details, datasheet, quote on part number: AD1981B
 
 
Part numberAD1981B
Category
DescriptionAD1981B AC'97 SoundMAX® Codec
CompanyAnalog Devices
DatasheetDownload AD1981B datasheet
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Specifications, Features, Applications

FEATURES '97 2.3 COMPATIBLE FEATURES S/PDIF Output, 20 Bits Data Format, Supporting 48 kHz and 44.1 kHz Sample Rates Integrated Stereo Headphone Amplifier Variable Sample Rate Audio External Audio Power-Down Control Greater than 90 dB Dynamic Range Stereo Full-Duplex Codec 20-Bit PCM DAC 3 Analog Line-Level Stereo Inputs for Line-In, AUX, and CD Mono Line-Level Phone Input Dual MIC Input with Built-In Programmable Preamp High Quality CD Input with Ground Sense

Mono Output for Speakerphone or Internal Speaker Power Management Support 48-Lead LQFP Package ENHANCED FEATURES Stereo MIC Preamps Support Built-In Digital Equalizer Function for Optimized Speaker Sound Full-Duplex Variable Sample Rates from to 48 kHz with 1 Hz Resolution Jack Sense Pins Provide Automatic Output Switching Software Programmed VREFOUT Output for Biasing Microphone and External Power Amp Split Power Supplies: 3.3 V Digital and 5 V Analog Multiple Codec Configuration Options

MIC2 PHONE_IN CD_L CD_GND CD_R AUX_L AUX_R LINE_IN_L LINE_IN_R CD DIFF AMP

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 2003 Analog Devices, Inc. All rights reserved.

STANDARD TEST CONDITIONS, UNLESS OTHERWISE NOTED DAC Test Conditions

Temperature Digital Supply (VDD) Analog Supply (VCC) Sample Rate (FS) Input Signal Analog Output Pass Band

Calibrated 3 dB Attenuation Relative to Full Scale 0 dB Input 10 k Output Load (LINE_OUT) 32 Output Load (HP_OUT)

Calibrated 0 dB Gain Input 3.0 dB Relative to Full Scale

Parameter ANALOG INPUT Input Voltage (rms Values Assume Sine Wave Input) LINE_IN, AUX, CD, PHONE_IN MIC_IN with +20 dB Gain MIC_IN with 0 dB Gain Input Impedance1 Input Capacitance1 MASTER VOLUME Step Size to 46.5 dB): LINE_OUT_L, LINE_OUT_R Output Attenuation Range1 Step Size to 46.5 dB): MONO_OUT Output Attenuation Range1 Step Size to 46.5 dB): HP_OUT_R, HP_OUT_L Output Attenuation Range Span1 Mute Attenuation dB Fundamental1 PROGRAMMABLE GAIN AMPLIFIER--ADC Step Size to 22.5 dB) PGA Gain Range ANALOG MIXER--INPUT GAIN/AMPLIFIERS/ATTENUATORS Signal-to-Noise Ratio (SNR) CD to LINE_OUT Other to LINE_OUT1 Step Size to 34.5 dB) (All Steps Tested): MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC Input Gain/Attenuation Range: MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC DIGITAL DECIMATION AND INTERPOLATION FILTERS Pass Band Pass-Band Ripple Transition Band Stop Band Stop-Band Rejection Group Delay Group Delay Variation over Pass Band

Parameter ANALOG-TO-DIGITAL CONVERTERS Resolution Total Harmonic Distortion (THD) Dynamic Range (60 dB Input THD+N Referenced to Full Scale, A-Weighted) Signal-to-Intermodulation Distortion1 (CCIF Method) ADC Crosstalk1 Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L) Line_In to Other Gain Error2 (Full-Scale Span Relative to Nominal Input Voltage) Interchannel Gain Mismatch (Difference of Gain Errors) ADC Offset Error1 DIGITAL-TO-ANALOG CONVERTERS Resolution Total Harmonic Distortion (THD) LINE_OUT Total Harmonic Distortion (THD) HP_OUT Dynamic Range (60 dB Input THD+N Referenced to Full Scale, A-Weighted) Signal-to-Intermodulation Distortion1 (CCIF Method) Gain Error2 (Output FS Voltage Relative to Nominal Output FS Voltage) Interchannel Gain Mismatch (Difference of Gain Errors) DAC Crosstalk1 (Input L, Zero R, Measure R_OUT; Input R, Zero L, Measure L_OUT) Total Audible Out-of-Band Energy1 (Measured from to 20 kHz) ANALOG OUTPUT Full-Scale Output Voltage; LINE_OUT and MONO_OUT Output Impedance1 External Load Impedance1 Output Capacitance1 External Load Capacitance1 Full-Scale Output Voltage; HP_OUT (0 dB Gain) External Load Impedance1 VREF VREF_OUT (Programmable 3.70 V Nominal) VREF_OUT Current Drive Mute Click (Muted Output Minus Unmuted Midscale DAC Output) STATIC DIGITAL SPECIFICATIONS High Level Input Voltage (VIH): Digital Inputs Low Level Input Voltage (VIL) High Level Output Voltage (VOH), IOH 2 mA Low Level Output Voltage (VOL), IOL 2 mA Input Leakage Current Output Leakage Current POWER SUPPLY Power Supply Range--Analog (AVDD) Power Supply Range--Digital (DVDD) Power V/3.3 V Analog Supply Current--5 V (AVDD) Digital Supply Current--3.3 V (DVDD) Power Supply Rejection (100 mV p-p Signal 1 kHz)1 (At Both Analog and Digital Supply Pins, Both ADCs and DACs) Min Typ Max Unit Bits dB mV Bits dB V rms V p-p pF V rms mA dB




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