AD9835BRUZ-REEL7 Analog Devices Inc, AD9835BRUZ-REEL7 Datasheet

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AD9835BRUZ-REEL7

Manufacturer Part Number
AD9835BRUZ-REEL7
Description
IC,Numeric-Controlled Oscillator,CMOS,TSSOP,16PIN,PLASTIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD9835BRUZ-REEL7

Resolution (bits)
10 b
Master Fclk
50MHz
Tuning Word Width (bits)
32 b
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-AD9835EBZ - BOARD EVALUATION FOR AD9835
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD9835BRUZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
5 V Power Supply
50 MHz Speed
On-Chip COS Look-Up Table
On-Chip 10-Bit DAC
Serial Loading
Power-Down Option
200 mW Power Consumption
16-Lead TSSOP
APPLICATIONS
DDS Tuning
Digital Demodulation
FSELECT
MCLK
FSELECT
FREQ0 REG
FREQ1 REG
FSYNC
BIT
16-BIT DATA REGISTER
8 MSBs
SYNC
SERIAL REGISTER
DECODE LOGIC
SCLK
SELSRC
MUX
8 LSBs
DVDD
FUNCTIONAL BLOCK DIAGRAM
SDATA
SYNC
PHASE0 REG
PHASE1 REG
PHASE2 REG
PHASE3 REG
DGND
ACCUMULATOR
DEFER REGISTER
(32 BIT)
PHASE
FSELECT/PSEL REGISTER
CONTROL REGISTER
AVDD
MUX
GENERAL DESCRIPTION
The AD9835 is a numerically controlled oscillator employing
a phase accumulator, a COS Look-Up Table and a 10-bit
D/A converter integrated on a single CMOS chip. Modulation
capabilities are provided for phase modulation and frequency
modulation.
Clock rates up to 50 MHz are supported. Frequency accuracy
can be controlled to one part in 4 billion. Modulation is ef-
fected by loading registers through the serial interface. A
power-down bit allows the user to power down the AD9835 when
it is not in use, the power consumption being reduced to 1.75 mW.
The part is available in a 16-lead TSSOP package.
AGND
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
12
SELSRC
REFERENCE
ON-BOARD
REFOUT
ROM
COS
SYNC
SYNC
AD9835
PSEL0
BIT
FS ADJUST
PSEL0 PSEL1
World Wide Web Site: http://www.analog.com
FULL-SCALE
CONTROL
10-BIT
DAC
REFIN
PSEL1
BIT
Complete DDS
50 MHz CMOS
© Analog Devices, Inc., 1998
COMP
IOUT
AD9835

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AD9835BRUZ-REEL7 Summary of contents

Page 1

FEATURES 5 V Power Supply 50 MHz Speed On-Chip COS Look-Up Table On-Chip 10-Bit DAC Serial Loading Power-Down Option 200 mW Power Consumption 16-Lead TSSOP APPLICATIONS DDS Tuning Digital Demodulation FSELECT MCLK BIT FSELECT FREQ0 REG FREQ1 REG 16-BIT ...

Page 2

AD9835–SPECIFICATIONS Parameter SIGNAL DAC SPECIFICATIONS Resolution Update Rate (f ) MAX IOUT Full Scale Output Compliance DC Accuracy Integral Nonlinearity Differential Nonlinearity 2 DDS SPECIFICATIONS Dynamic Specifications Signal-to-Noise Ratio Total Harmonic Distortion Spurious Free Dynamic Range (SFDR) Narrow Band ( ...

Page 3

TIMING CHARACTERISTICS Limit MIN MAX Parameter (B Version SCLK – ...

Page 4

AD9835 ABSOLUTE MAXIMUM RATINGS +25 C unless otherwise noted) A AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . –0 ...

Page 5

Pin # Mnemonic Function ANALOG SIGNAL AND REFERENCE 1 FS ADJUST Full-Scale Adjust Control. A resistor (R the magnitude of the full-scale DAC current. The relationship between R as follows: 2 REFIN Voltage Reference Input. The AD9835 can be used ...

Page 6

AD9835 Table I. Control Registers Register Size Description FREQ0 REG 32 Bits Frequency Register 0. This de- fines the output frequency, when FSELECT = fraction of the MCLK frequency. FREQ1 REG 32 Bits Frequency Register 1. This ...

Page 7

...

Page 8

AD9835 –20 AVDD = DVDD = +5V –30 –40 50MHz –50 30MHz –60 –70 10MHz –80 0.044 0.084 0.124 0.164 0.204 0.244 f /f OUT MCLK Figure 9. Wide Band SFDR vs OUT Frequencies 56 f OUT 55 ...

Page 9

START RBW 1kHz VBW 3kHz Figure 15 MHz 9.1 MHz. Frequency MCLK OUT Word = 2E978D50 0Hz START RBW 1kHz VBW 3kHz Figure 16 MHz 11.1 MHz. Frequency MCLK ...

Page 10

AD9835 CIRCUIT DESCRIPTION The AD9835 provides an exciting new level of integration for the RF/Communications system designer. The AD9835 com- bines the Numerical Controlled Oscillator (NCO), COS Look-Up Table, Frequency and Phase Modulators, and a Digital-to- Analog Converter on a ...

Page 11

FSYNC should be taken high again. The SCLK can be con- tinuous or, alternatively, the SCLK can idle high or low be- tween write operations. When writing to a frequency/phase register, the first four bits identify whether a frequency or ...

Page 12

AD9835 PHASEREG <3:0> = DELTA PHASE< 3> WAIT 6 MCLK CYCLES (8 MCLK CYCLES IF SYNC = *6.25*R OUT REFIN CHANGE FSELECT Figure 20. Flowchart for AD9835 Initialization and Operation INITIALIZATION* CONTROL REGISTER WRITE ...

Page 13

APPLICATIONS The AD9835 contains functions that make it suitable for modulation applications. The part can be used to perform simple modulation such as FSK. More complex modulation schemes such as GMSK and QPSK can also be implemented using the AD9835. ...

Page 14

AD9835 falling clock edges occurring in the transmit cycle. Data is transmitted MSB first. In order to load data into the AD9835, PC7 is held low after the first eight bits are transferred and a second serial write operation is ...

Page 15

SCLK 3 SDATA 4 FSYNC SCLK 8 9 SDATA 10 FSYNC PSEL1 10k 10k 10k 17 18 PSEL0 19 20 FSELECT ...

Page 16

AD9835 16-Lead Thin Shrink Small Outline Package (TSSOP) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). (RU-16) 0.201 (5.10) 0.193 (4.90 PIN 1 0.006 (0.15) 0.0433 0.002 (0.05) (1.10) MAX 8° 0.0256 0.0118 (0.30) 0° SEATING ...

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