AD9832BRUZ

Manufacturer Part NumberAD9832BRUZ
DescriptionIC DDS 10BIT 25MHZ CMOS 16-TSSOP
ManufacturerAnalog Devices Inc
AD9832BRUZ datasheet
 

Specifications of AD9832BRUZ

Resolution (bits)10 bMaster Fclk25MHz
Tuning Word Width (bits)32 bVoltage - Supply2.97 V ~ 5.5 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case16-TSSOPIc FunctionProgrammable Waveform Generator IC
Supply Voltage Range2.97V To 5.5VOperating Temperature Range-40°C To +85°C
Digital Ic Case StyleTSSOPNo. Of Pins16
Lead Free Status / RoHS StatusLead free / RoHS CompliantFor Use WithEVAL-AD9832EBZ - BOARD EVAL FOR AD9832
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FEATURES
3 V/5.0 V power supply
25 MHz speed
On-chip sine look-up table
On-chip, 10-bit DAC
Serial loading
Power-down option
45 mW power consumption
16-lead TSSOP
APPLICATIONS
DDS tuning
Digital demodulation
FSELECT
MCLK
BIT
FSELECT
FREQ0 REG
FREQ1 REG
SYNC
16-BIT DATA REGISTER
8 MSBs
DECODE LOGIC
SERIAL REGISTER
FSYNC
Rev. B
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.
Programmable Waveform Generator
GENERAL DESCRIPTION
The AD9832 is a numerically controlled oscillator employing
a phase accumulator, a sine look-up table, and a 10-bit digital-
to-analog converter (DAC) integrated on a single CMOS chip.
Modulation capabilities are provided for phase modulation and
frequency modulation.
Clock rates up to 25 MHz are supported. Frequency accuracy can
be controlled to one part in 4 billion. Modulation is effected by
loading registers through the serial interface.
A power-down bit allows the user to power down the AD9832
when it is not in use, the power consumption being reduced to
5 mW (5 V) or 3 mW (3 V). The part is available in a 16-lead
TSSOP package.
FUNCTIONAL BLOCK DIAGRAM
DVDD
DGND
AVDD
AGND
REFOUT
SELSRC
ON-BOARD
REFERENCE
SYNC
12
PHASE
ACCUMULATO R
(32 BIT)
PHASE0 REG
PHASE1 REG
MUX
PHASE2 REG
PHASE3 REG
8 LSBs
DEFER REGISTER
SELSRC
CONTROL REGISTER
FSELECT/PSEL REGISTER
SCLK
SDATA
Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
3 V to 5.0 V
AD9832
FS ADJUST
REFIN
FULL-SCALE
COMP
CONTROL
SIN
10-BIT DAC
IOUT
ROM
AD9832
SYNC
SYNC
MUX
MUX
PSEL0
PSEL1
BIT
BIT
PSEL0 PSEL1
www.analog.com
©1999–2010 Analog Devices, Inc. All rights reserved.

AD9832BRUZ Summary of contents

  • Page 1

    FEATURES 3 V/5.0 V power supply 25 MHz speed On-chip sine look-up table On-chip, 10-bit DAC Serial loading Power-down option 45 mW power consumption 16-lead TSSOP APPLICATIONS DDS tuning Digital demodulation FSELECT MCLK BIT FSELECT FREQ0 REG FREQ1 REG SYNC ...

  • Page 2

    AD9832 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings ............................................................ 6 ESD Caution .................................................................................. 6 Pin ...

  • Page 3

    SPECIFICATIONS V = 3.3 V ± 10 ± 10%, AGND = DGND = IOUT, unless otherwise noted. Also, see Figure 2. Table 1. 1 Parameter SIGNAL DAC SPECIFICATIONS Resolution Update Rate ...

  • Page 4

    AD9832 R SET 3.9kΩ 10nF REFOUT REFIN FS ADJUST COMP ON-BOARD FULL-SCALE REFERENCE CONTROL 12 IOUT SIN 10-BIT DAC ROM AD9832 Figure 2. Test Circuit by Which Specifications Were Tested Rev Page AVDD 10nF 300Ω ...

  • Page 5

    TIMING CHARACTERISTICS V = 3.3 V ± 10 ± 10%, AGND = DGND = 0 V, unless otherwise noted Table 2. Parameter Limit Version) MIN MAX ...

  • Page 6

    AD9832 ABSOLUTE MAXIMUM RATINGS T = 25°C unless otherwise noted. A Table 3. Parameter AVDD to AGND DVDD to DGND AVDD to DVDD AGND to DGND Digital I/O Voltage to DGND Analog I/O Voltage to AGND Operating Temperature Range Industrial ...

  • Page 7

    PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 FS ADJUST Full-Scale Adjust Control. A resistor (R magnitude of the full-scale DAC current. The relationship between R IOUT = 12.5 × V FULL-SCALE 2 ...

  • Page 8

    AD9832 TYPICAL PERFORMANCE CHARACTERISTICS 25° 3. MCLK FREQUENCY (MHz) Figure 7. Typical Current Consumption vs. MCLK Frequency – 1/3 OUT MCLK AVDD = DVDD ...

  • Page 9

    AVDD = DVDD = 2.97V 7.5 5.0 2.5 0 –40 –30 –20 TEMPERATURE (°C) Figure 13. Wake-Up Time vs. Temperature 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz RBW 300Hz VBW 1kHz Figure 14. ...

  • Page 10

    AD9832 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 START 0Hz RBW 300Hz VBW 1kHz Figure 19 MHz 6.1 MHz, Frequency Word = 0x3E76C8B4 MCLK OUT 0 –10 –20 –30 –40 –50 ...

  • Page 11

    TERMINOLOGY Integral Nonlinearity This is the maximum deviation of any code from a straight line passing through the endpoints of the transfer function. The endpoints of the transfer function are zero scale, a point 0.5 LSB below the first code ...

  • Page 12

    AD9832 THEORY OF OPERATION Sine waves are typically thought of in terms of their magnitude form a(t) = sin (ωt). However, these are nonlinear and not easy to generate except through piecewise construction. On the other hand, the angular information ...

  • Page 13

    CIRCUIT DESCRIPTION The AD9832 provides an exciting new level of integration for the RF/communications system designer. The AD9832 combines the numerical controlled oscillator (NCO), a sine look-up table, frequency and phase modulators, and a DAC on a single integrated circuit. ...

  • Page 14

    AD9832 FUNCTIONAL DESCRIPTION SERIAL INTERFACE The AD9832 has a serial interface, with 16 bits being loaded during each write cycle. SCLK, SDATA, and FSYNC are used to load the word into the AD9832. When FSYNC is taken low, the AD9832 ...

  • Page 15

    When writing to a phase register, the 4 MSBs of the 16-bit word loaded into the data register should be zero (the phase registers are 12 bits wide). To alter the entire contents of a frequency register, four write operations ...

  • Page 16

    AD9832 Table 11. Writing to the AD9832 Data Registers D15 D14 D13 D12 D11 don’t care. Table 12. Setting SYNC and SELSRC D15 D14 D13 D12 1 0 SYNC SELSRC 1 X ...

  • Page 17

    DATA WRITE f f FREG[ OUT0 MCLK f f FREG[ OUT1 MCLK PHASEREG [3:0] = DELTA PHASE[ SELECT DATA SOURCES SET FSELECT SET PSEL0, PSEL1 WAIT 6 MCLK CYCLES (8 MCLK CYCLES IF ...

  • Page 18

    AD9832 WRITE 8 BITS TO DEFER REGISTER WRITE PRESENT 8 BITS AND 8 BITS IN DEFER REGISTER TO DATA REGISTER WRITE A WORD TO ANOTHER REGISTER DATA WRITE DEFERRED TRANSFER WRITE DIRECT TRANSFER WRITE YES YES CHANGE WRITE ANOTHER WORD ...

  • Page 19

    APPLICATIONS INFORMATION The AD9832 contains functions that make it suitable for modulation applications. The part can be used to perform simple modulation, such as FSK, and more complex modulation schemes, such as GMSK and QPSK, can also be implemented using ...

  • Page 20

    AD9832 AD9832 TO 68HC11/68L11 INTERFACE Figure 29 shows the serial interface between the AD9832 and the 68HC11/68L11 microcontroller. The microcontroller is configured as the master by setting bit MSTR in the SPCR to 1, which provides a serial clock on ...

  • Page 21

    AD9832 EVALUATION BOARD The AD9832 evaluation board allows designers to evaluate the high performance AD9832 DDS modulator with a minimum of effort. To prove that this device meets the waveform synthesis requirements of users, it requires only a 3.3 V ...

  • Page 22

    AD9832 1 2 SCLK 3 SDATA 4 FSYNC SCLK 8 9 SDATA 10 FSYNC PSEL1 10kΩ 10kΩ 10kΩ PSEL0 19 20 FSELECT ...

  • Page 23

    ... Model Temperature Range AD9832BRU −40°C to +85°C AD9832BRU-REEL −40°C to +85°C AD9832BRU-REEL7 −40°C to +85°C AD9832BRUZ −40°C to +85°C AD9832BRUZ-REEL −40°C to +85°C AD9832BRUZ-REEL7 −40°C to +85°C EVAL-AD9832EBZ RoHS Compliant Part. 5.10 5.00 4. 4.50 6.40 4 ...

  • Page 24

    AD9832 NOTES ©1999–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D09090-0-6/10(B) Rev Page ...