AD1836A-DBRD Analog Devices Inc, AD1836A-DBRD Datasheet

BOARD EVAL FOR AD1836A

AD1836A-DBRD

Manufacturer Part Number
AD1836A-DBRD
Description
BOARD EVAL FOR AD1836A
Manufacturer
Analog Devices Inc
Datasheets

Specifications of AD1836A-DBRD

Module/board Type
Evaluation Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
AD1836A
Lead Free Status / RoHS Status
Not Compliant, Contains lead / RoHS non-compliant
FEATURES
5 V multichannel audio system
Accepts 16-/18-/20-/24-bit data
Supports 24-bit and 96 kHz sample rate
Multibit Σ-∆ modulators with data directed
Differential output for optimum performance
ADCs: –92 dB THD + N, 105 dB SNR and dynamic range
DACs: –95 dB THD + N, 108 dB SNR and dynamic range
On-chip volume control with "auto-ramp" function
Programmable gain amplifier for ADC input
Hardware and software controllable clickless mute
Digital de-emphasis processing
Supports 256 × f
Power-down mode plus soft power-down mode
Flexible serial data port with right justified, left justified, I
TDM interface mode supports 8 in/8 out using a single
52-lead MQFP (PQFP) plastic package
Rev. 0
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.
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.
scrambling
compatible, and DSP serial port modes
SHARC® SPORT
S
, 512 × f
DSDATA2
DSDATA3
ASDATA2
DSDATA1
ASDATA1
DLRCLK
ALRCLK
ADC2R2
ADC2L2
ADC2R1
ADC2L1
DBCLK
ABCLK
ADC1R
ADC1L
CAPL2
CAPR1
CAPR2
CAPL1
S
, or 768 × f
48kHz/96kHz
48kHz/96kHz
ADC1L
ADC1R
S
Σ-∆
Σ-∆
PGA
PGA
master clock
SERIAL
DATA
PORT
I/O
48kHz/96kHz
48kHz/96kHz
ADC2L
ADC2R
48kHz
48kHz
DIGITAL
DIGITAL
FILTER
FILTER
Σ-∆
Σ-∆
FUNCTIONAL BLOCK DIAGRAM
CCLK
DIGITAL
DIGITAL
FILTER
FILTER
48kHz
48kHz
2
PD/RST
S
CONTROL PORT
CDATA CLATCH
Figure 1.
AVDD
APPLICATIONS
Home theater systems
Automotive audio systems
DVD recorders
Set-top boxes
Digital audio effects processors
PRODUCT OVERVIEW
The AD1836A is a high performance, single-chip codec that
provides three stereo DACs and two stereo ADCs using ADI’s
patented multibit Σ-∆ architecture. An SPI® port is included,
allowing a microcontroller to adjust volume and many other
parameters. The AD1836A operates from a 5 V supply, with
provision for a separate output supply to interface with low
voltage external circuitry. The AD1836A is available in a 52-lead
MQFP (PQFP) package.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
2
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
COUT
Multichannel 96 kHz Codec
AGND
4
DIGITAL
DIGITAL
DIGITAL
CLOCK
FILTER
FILTER
FILTER
MCLK
DVDD
© 2003 Analog Devices, Inc. All rights reserved.
3
DGND
DAC
DAC
DAC
V
Σ-∆
Σ-∆
Σ-∆
REF
2
DAC1L
DAC1R
DAC2L
DAC2R
DAC3L
DAC3R
FILTD
FILTR
AD1836A
www.analog.com

Related parts for AD1836A-DBRD

AD1836A-DBRD Summary of contents

Page 1

... An SPI® port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1836A operates from supply, with master clock provision for a separate output supply to interface with low voltage external circuitry. The AD1836A is available in a 52-lead 2 S MQFP (PQFP) package. FUNCTIONAL BLOCK DIAGRAM ...

Page 2

... AD1836A TABLE OF CONTENTS AD1836A—Specifications ............................................................... 3 Absolute Maximum Ratings............................................................ 8 Pin Configuration And Pin Functional Descriptions.................. 9 Functional Overview...................................................................... 11 ADCs............................................................................................ 11 DACs ............................................................................................ 11 Clock Signals ............................................................................... 11 Reset and Power-Down ............................................................. 12 REVISION HISTORY Revision 0: Initial Version Serial Control Port ..................................................................... 12 Power Supply and Voltage Reference....................................... 13 Serial Data Ports—Data Format............................................... 13 SPI Control Registers ...

Page 3

... Measurement Bandwidth Word Width Load Capacitance (Digital Output) Load Impedance (Digital Output) Input Voltage HI Input Voltage LO Rating 5 V 25°C 12.288 MHz (48 kHz f , 256 × 1.000 kHz, 0 dBFS (Full Scale) 48 kHz kHz 24 Bits 100 pF 2.5 kΩ 2.4 V 0.8 V Rev Page AD1836A Mode) S ...

Page 4

... Input Capacitance Common-Mode Input Volts Dynamic Range ( kHz, –60 dB Input) No Filter (RMS), AD1836AAS With A-Weighted Filter (RMS), AD1836AAS No Filter (RMS), AD1836ACS With A-Weighted Filter (RMS), AD1836ACS Total Harmonic Distortion + Noise (0 dBFS) Full-Scale Output Voltage (Differential) Gain Error Interchannel Gain Mismatch Offset Error ...

Page 5

... Typ 25 –40 –40 –65 Pass Band Pass-Band Ripple Transition Band Stop Band Stop-Band Attenuation Group Delay Pass Band Pass-Band Ripple Transition Band Stop Band Stop-Band Attenuation Group Delay Rev Page AD1836A Typ Max Unit V 0 µA 10 µ Min Typ Max 4 ...

Page 6

... AD1836A Table 7. Timing Specifications Parameter MASTER CLOCK AND RESET SPI PORT DAC SERIAL PORT (Normal Modes) DAC SERIAL PORT (Packed 128 Mode, Packed 256 Mode) ADC SERIAL PORT (Normal Modes) ADC SERIAL PORT (Packed 128 Mode, Packed 256 Mode) ADC SERIAL PORT ...

Page 7

... From MCLK Rising, 512 × AUXLRCLK Skew From AUXBCLK Falling XLS t AUXBCLK High XBH t AUXBCLK Low XBL f AUXBCLK Frequency XB t AUXLRCLK Setup To AUXBCLK Rising DLS t AUXLRCLK Hold From AUXBCLK Rising DLH Rev Page AD1836A Min Max Unit Mode Mode S – × ...

Page 8

... AD1836A ABSOLUTE MAXIMUM RATINGS Table 8. AD1836A Absolute Maximum Ratings Parameter Analog (AVDD) Digital (DVDD) Input Current (Except Supply Pins) Analog Input Voltage (Signal Pins) Digital Input Voltage (Signal Pins) Ambient Temperature (Operating) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other condition s above those indicated in the operational section of this specification is not implied ...

Page 9

... ADC2 Right Input 1 (MUX/PGA Mode)/Right Positive Input (PGA Differential Mode). ADC2 Right Negative Input (Direct Mode)/ADC2 Right Decoupling Capacitor (MUX/PGA and PGA Differential Mode). Rev Page DGND 38 DSDATA1 DBCLK 37 36 DLRCLK 35 OUTRP3 OUTRN3 34 33 OUTRP2 32 OUTRN2 31 OUTRP1 30 OUTRN1 29 AGND 28 AGND 27 ADC2INRP/CAPR2 AD1836A ...

Page 10

... AD1836A Pin No. In/Out Mnemonic 27 I ADC2INRP/CAPR2 28 I AGND 29 I AGND 30 O OUTRN1 31 O OUTRP1 32 O OUTRN2 33 O OUTRP2 34 O OUTRN3 35 O OUTRP3 36 I/O DLRCLK 37 I/O DBCLK 38 I DSDATA1 39 I DGND 40 I DVDD 41 I DSDATA2 42 I DSDATA3 43 O ABCLK 44 O ALRCLK 45 I MCLK ...

Page 11

... AD1836A is then switched to 96 kHz operation (via writing to the SPI port), the frequency of the master clock should remain at 12.288 MHz (which is now 128 × f The internal clock used in the AD1836A is 512 × f mode) or 256 × f (96 kHz mode). A clock doubler is used to ...

Page 12

... Reset will power down the chip and set the control registers to their default settings. After reset is de-asserted, an initialization routine will run inside the AD1836A to clear all memories to zero. This initialization lasts for approximately 4500 MCLKs. The power-down bit in the DAC Control Register 1 and ADC Control Register 1 will power down the respective digital section ...

Page 13

... A special “auxiliary mode” is provided to allow two external stereo ADCs and one external stereo DAC to be interfaced with the AD1836A to provide 8 in/8 out operation. In addition, this mode supports glueless interface to a single SHARC DSP serial port, allowing a SHARC DSP to access all eight channels of analog I/O. In this special mode, many pins are redefined ...

Page 14

... AD1836A LRCLK LEFT CHANNEL BCLK SDATA MSB LEFT CHANNEL LRCLK BCLK MSB SDATA LEFT CHANNEL LRCLK BCLK MSB SDATA LRCLK BCLK SDATA MSB NOTES 1. DSP MODE DOES NOT IDENTIFY CHANNEL 2. LRCLK NORMALLY OPERATES BCLK FREQUENCY IS NORMALLY 64 × LRCLK BUT MAY BE OPERATED IN BURST MODE ...

Page 15

... Figure 8. DAC Packed Mode 256 Rev Page SLOT 3 SLOT 4 RIGHT 0 RIGHT 1 LRCLK BCLK DATA SLOT 5 SLOT 6 SLOT 7 SLOT 8 RIGHT 0 RIGHT 1 LRCLK BCLK DATA SLOT 4 SLOT 5 SLOT 6 RIGHT 0 RIGHT 1 RIGHT 2 LRCLK BCLK DATA SLOT 4 SLOT 5 SLOT 6 RIGHT 0 RIGHT 1 RIGHT 2 LRCLK BCLK DATA AD1836A ...

Page 16

... AD1836A FSTDM BCLK TDM MSB TDM ASDATA1 1ST CH TDM (OUT) INTERNAL ASDATA1 ADC L0 32 MSB TDM DSDATA1 1ST CH TDM (IN) INTERNAL DSDATA1 DAC L0 32 AUX 2 LRCLK I S (FROM AUX ADC NO. 1) AUX 2 BCLK I S (FROM AUX ADC NO. 1) AAUXDATA1 (IN) (FROM AUX ADC NO. 1) AAUXDATA2 (IN) (FROM AUX ADC NO ...

Page 17

... RUNNING IN SLAVE MODE (INTERRUPT-DRIVEN) ASDATA1 ALRCLK ABCLK DSDATA1 DBCLK/AUXBCLK (64f ) S ASDATA2/DAUXDATA AD1836A MASTER SHARC IS ALWAYS SHARC RUNNING IN SLAVE MODE (INTERRUPT-DRIVEN) ASDATA1 ALRCLK ABCLK DSDATA1 DBCLK/AUXBCLK (64f ) S ASDATA2/DAUXDATA AD1836A SLAVE Rev Page AD1836A LRCLK BCLK DAC DATA MCLK LRCLK BCLK DAC DATA MCLK ...

Page 18

... AD1836A Table 11. Pin Function Changes in AUX Mode 2 2 Pin Name (I S/AUX Mode Mode 2 ASDATA1( Data Out, Internal ADC1 ASDATA2(O)/DAUXDATA( Data Out, Internal ADC2 2 DSDATA1( Data In, Internal DAC1 2 DSDATA2(I)/AAUXDATA( Data In, Internal DAC2 2 DSDATA3(I)/AAUXDATA2( Data In, Internal DAC3 ALRCLK(O) LRCLK for Internal ADC1, ADC2 ...

Page 19

... Bits 010 = DSP Bits 011 = Reserved 100 = Packed Mode 256 101 = Packed Mode 128 110 = Reserved 111 = Reserved Rev Page AD1836A Data Field 9:0 10 Bits Function Bits 9:0 DAC Control 1 DAC Control 2 DAC1L Volume DAC1R Volume DAC2L Volume DAC2R Volume ...

Page 20

... AD1836A Table 15. DAC Control Register 2 Address RD/WR Reserved 15, 14 0001 0 00000 Table 16. DAC Volume Registers Address RD/WR 15, 14, 13 0010: DAC1L 0 0011: DAC1R 0100: DAC2L 0101: DAC2R 0110: DAC3L 0111: DAC3R Table 17. ADC Control Register 1 Address RD/WR Reserved 15, 14, 13 10, 9 1100 ...

Page 21

... Min Rev Page Left Right MUX/PGA Left MUX MUX/PGA Enable I/P Select Enable Direct Direct 1 = MUX/PGA MUX/PGA 4 Fixed Bits 3:0 0000 The 4 LSBs are always zero. AD1836A Right MUX I/P Select I I/P 1 ...

Page 22

... LEFT + V REF LEFT 250Ω – REF PGA CAP2L C2 1nF SELECT INPUT NO 1111 Figure 13. Single-Ended MUX/PGA Mode AD1836A CAP1L C1 1nF – INPUT + V REF + – INPUT PGA CAP2L C2 1nF NOTE ADC2 DIFFERENTIAL PGA INPUT MODE—LEFT CHANNEL ONLY SHOWN. ...

Page 23

... Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. ORDERING GUIDE AD1836A Products Temperature Package AD1836AAS –40°C to +85°C Ambient AD1836AASRL – ...

Page 24

... AD1836A NOTES © 2003 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C03800–0–8/03(0) Rev Page ...

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