ANALOG DEVICES AD1983 Service Manual

www.BDTIC.com/ADI

HD Audio SoundMAX® Codec

FEATURES

2 DAC channels: 16-, 20-, or 24-bit 2 ADC channels: 16- or 20-bit HD audio sample rates

8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,

Hz, 48 kHz

44.1 k Greater than 90 dB dynamic range S/PDIF output: 32 kHz, 44.1 kHz, or 48 kHz, 16- or 24-bit Digital BEEP generator Integrated headphone amplifiers Selectable microphone inputs with preamplifiers Stereo line level inputs Full analog mixer

2 GPIOs for external circuit control, jack sense 32-lead, Pb-free LFCSP_VQ (QFN) package

FUNCTIONAL BLOCK DIAGRAM

NID: 01

GPIO

JACK

SENSE

SDATA_IN

SDATA_OUT

SYNC

RESET

BIT_CLK

HD AUDIO I NTERFACE

+3.3V

DV

DD

DV

SS

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her rights of third parties that may result from its use. Specifications subject to change without notice. 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 owners.

NID: 04

PCM/FLOAT32

Σ-Δ ADC

20-BIT

48kHz

GPIO_0/JS_ 1

GPIO_1/JS_ 0

SENSE_A SENSE_SRC

NID: 02

16-,20-, 24-BIT 32kHz,44.1kHz, 48kHz PCM/AC3 S/PDIF TX

NID: 03

G

M

0dB TO +22.5dB

24-BIT 48kHz PCM Σ-Δ DAC

–34.5dB TO +12dB

–34.5dBTO +12dB

4:1

SELECTOR

M

GA

NID: 13

NID: 0A

S/PDIF_OUT

NID: 11

GA

M

NID: 0E

Σ

–34.5dB TO +12dB

M

GA

NID: 12

ENHANCED FEATURES

No AFILT pins, results in BOM savings Jack sensing autoconfiguration options

Mute line output and monaural output (MONO_OUT)

when headphones are used

Mute MONO_OUT when a device is in the line out jack Selectable sense trip level: high/low supports all jack types Peripheral identification/enumeration Jack presence detection: HD Audio SENSE and GPIOs Microphone to MONO_OUT for speakerphone Advanced power management modes 2 software-controlled microphone bias pins Stereo microphone array capture

Source from two different ports

0 dB, 10 dB, 20 dB, and 30 dB boost options

AV

DD

GA

–46.5dB TO+3dB

GA

–46.5dB TO+3dB

GA

–46.5dB TO+3dB

BIAS_SEL

MIC BIAS

BIAS_SEL

MIC BIAS

AV

SS

M

NID: 10

DIGITAL PCBEEP

G

M

0dB TO –45.0dB 3dB STEPS

2:1

SELECTOR

2:1

SELECTOR

NID: 0B

4:1

SELECTOR

NID: 0C

BOOST

0dB,10dB, 20dB,30dB

Σ

NID: 0F

NID: 0D

2:1

SELECTOR

2:1

SELECTOR

Figure 1.

HP

OUTPUT_EN

Z

OUTPUT_EN

Z

BIAS_EN

Z

BIAS_EN

+5.0V

NID: 06

PORT-A HEADPHONE

NID: 05

PORT-D FRONT

NID: 07

MONO_OUT

NID: 09

PORT-C LINE IN

NID: 08

MIC_BIAS-B

PORT-B MIC

AD1983

MIC_BIAS-C

05205-001

AD1983

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REVISION HISTORY

4/06—Revision 0: Initial Version

ESD Caution...................................................................................6

Pin Configuration and Function Descriptions..............................7

HD Audio Codec Information ........................................................9

Verb Support ............................................................................... 12

Jack Presence Detection................................................................. 14

Outline Dimensions ....................................................................... 15

Ordering Guide .......................................................................... 15

Rev. 0 | Page 2 of 16

AD1983

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SPECIFICATIONS

TEST CONDITIONS

Test conditions for the AD1983 are as follows, unless otherwise noted.

General Test Conditions

Temperature at 25°C Digital supply (DV Analog supply (AV Sample rate (F

) at 3.3 V ± 10%

DD

) at 5.0 V ± 10%

DD

) at 48 kHz

S

Input signal at 1.0 kHz Analog output pass band at 20 Hz to 20,000 Hz V

at 2.0 V

IH

V

at 0.8 V

IL

V

at 2.4 V

IH

V

at 0.6 V

IL

DAC Test Conditions

Calibrated

Output −3 dB relative to full scale

utput load, Port D, and MONO_OUT

10 kΩ o 32 Ω output load, Port A

ADC Test Conditions

Calibrated

0 dB PGA gain Input −3.0 dB relative to full scale

Table 1.

Parameter Conditions Min Typ Max Unit

ANALOG INPUT

Port-B, Port-C 0 dB 1 V rms

2.83 V p-p Port-B, Port-C 10 dB 0.316 V rms

0.894 V p-p Port-B, Port-C 20 dB 0.1 V rms

0.283 V p-p Port-B, Port-C 30 dB 0.032 V rms

0.089 V p-p Input Impedance Input Capacitance

MASTER VOLUME

Step Size Port-A, Port-D, MONO_OUT 1.5 dB Output Gain Range –46.5 +3 dB Mute Attenuation of 0 dB Fundamental 80 dB

PROGRAMMABLE GAIN AMPLIFIER— ADC

Step Size 1.5 dB PGA Gain Range 0.0 22.5 dB

ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS

Signal-to-Noise Ratio (SNR)

Line In to Line Out 85 dB

Microphone In to Line Out Step Size All mixer inputs except digital PC BEEP 1.5 dB Step Size: Digital PC Beep 3.0 dB Input Gain Range All mixer inputs except digital PC BEEP −34.5 +12.0 dB Digital PC Beep −45.0 0.0 dB

DIGITAL DECIMATION AND INTERPOLATION FILTERS

Pass Band 0 0.4 × FSHz Pass-Band Ripple ±0.09 dB Transition Band 0.4 × F Stop Band 0.6 × F Stop-Band Rejection −74 dB

2

20 kΩ 5 7.5 pF

80 dB

0.6 × FSHz

S

∞ Hz

S

Rev. 0 | Page 3 of 16

1

AD1983

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Parameter Conditions Min Typ Max Unit

Group Delay 16/F Group Delay Variation over Pass Band 0 μs

ANALOG-TO-DIGITAL CONVERTERS

Resolution +20 Bits Total Harmonic Distortion (THD) −92 dB Dynamic Range

Crosstalk

Line inputs and other inputs −100 −80 dB Gain Error

Interchannel Gain Mismatch Difference of gain errors ±0.5 dB ADC Offset Error

DIGITAL-TO-ANALOG CONVERTERS

Resolution +24 Bits Total Harmonic Distortion (THD) Line out −86 dB Headphone out −76 dB Dynamic Range

Gain Error Full-scale span relative to nominal input voltage ±10 % Interchannel Gain Mismatch Difference of gain errors ±0.7 dB DAC Crosstalk

ANALOG OUTPUT

Full-Scale Output Voltage Port-D and MONO_OUT 1 V rms

2.83 V p-p

Full-Scale Output Voltage Port-A: headphone out 1 V rms

VREF_FILT 2.050 2.250 2.450 V MIC_BIAS (Port-B and Port-C) At 50% setting 2.250 V

Mute Click Muted output, unmuted midscale DAC output ±5 mV

STATIC DIGITAL SPECIFICATIONS

High Level Input Voltage (VIH), Digital Inputs

Low Level Input Voltage (VIL) 0.35 × DVDD V High Level Output Voltage (VOH) IOH = 2 mA 0.90 × DVDD V Low Level Output Voltage (VOL) IOL = 2 mA 0.10 × DVDD V Input Leakage Current −10 +10 μA Output Leakage Current −10 +10 μA Input/Output Pin Capacitance 7.5 pF

2

Output Impedance External Load Impedance Output Capacitance External Load Capacitance 1000 pF

2.83 V p-p External Load Impedance Output Capacitance External Load Capacitance

Current Drive 5 mA

2

−60 dB input, THD + N referenced to F A-weighted

Line inputs: Input L, Ground R, Read R; Input R, Ground L, Read L

Full-

span relative to nominal input voltage

scale

±5 mV

−60 dB input, THD + N referenced to F A-weighted

Input L, Zero R, Read R out; Input R, Zero L, Read L out

300 Ω 10 kΩ 15 pF

32 Ω 15 pF 1000 pF

At 80% setting 3.700 V At 0% setting 0.0 V

0.65 × DV

,

S

,

S

−85 dB

−80 dB

±10 %

−90 dB

−80 dB

DD

S

V

sec

Rev. 0 | Page 4 of 16

AD1983

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Parameter Conditions Min Typ Max Unit

POWER SUPPLY

Power Supply Range

Analog (AVDD) ±10% 4.5 5.5 V

Digital (DVDD) ±10% 2.97 3.63 V Power Dissipation—Analog

)/Digital (DVDD)

(AV

DD

Analog Supply Current—Analog (AV

)

DD

Digital Supply Current—Digital

)

(DV

DD

Power Supply Rejection 100 mV p-p signal @ 1 kHz 40 dB

1

RMS values assume sine wave input.

2

Guaranteed by design; not production tested.

POWER DOWN DISSIPATION

Table 2.

Parameter DVDD AVDD Unit

FUNCTION NODE1 0 1.8 mA DAC 30 26 mA ADC 28 26 mA MIXER 37 17 mA

1

BIT_CLK off.

165/125 mW

33 mA

38 mA

Rev. 0 | Page 5 of 16

ANALOG DEVICES AD1983 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FEATURES

FUNCTIONAL BLOCK DIAGRAM

ENHANCED FEATURES

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS

TEST CONDITIONS

General Test Conditions

DAC Test Conditions

ADC Test Conditions

POWER DOWN DISSIPATION