AD9837 Low Power, 8.5 mW, 2.3 V to 5.5 V, Programmable Waveform Generator

The AD9837 has a power-down (SLEEP) function. Sections of the device that are not being used can be powered down to minimize the current consumption of the part. For example, the DAC can be powered down when a clock output is being generated. The AD9837 is available in a 10-lead LFCSP_WD package. Applications Frequency stimulus/waveform generation Liquid and gas flow measurement Sensory applications: proximity, motion, and defect detection Line loss/attenuation Test and medical equipment Sweep/clock generators Time domain reflectometry (TDR) applications

The AD9837 is a low power, programmable waveform generator capable of producing sine, triangular, and square wave outputs. Waveform generation is required in various types of sensing, actuation, and time domain reflectometry (TDR) applications. The output frequency and phase are software programmable, allowing easy tuning. The frequency registers are 28 bits: with a 16 MHz clock rate, resolution of 0.06 Hz can be achieved; with a 5 MHz clock rate, the AD9837 can be tuned to 0.02 Hz resolution.

The AD9837 is written to via a 3-wire serial interface. This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards. The device operates with a power supply from 2.3 V to 5.5 V.

The AD9837 is available in a 10-lead LFCSP_WD package.

Applications

Frequency stimulus/waveform generation
Liquid and gas flow measurement
Sensory applications: proximity, motion, and defect detection
Line loss/attenuation
Test and medical equipment
Sweep/clock generators
Time domain reflectometry (TDR) applications

Features and Benefits

Digitally programmable frequency and phase
8.5 mW power consumption at 2.3 V
MCLK speed: 16 MHz (B grade), 5 MHz (A grade)
28-bit resolution: 0.06 Hz at 16 MHz reference clock
Sinusoidal, triangular, and square wave outputs

2.3 V to 5.5 V power supply
3-Wire SPI interface
Extended Temperature Range: –40°C to +125°C
Power-down option
10-Lead LFSCP

RF & Microwave

Software & Systems Requirements

AD9837 Evaluation Board Software (Rev. B) .

Data Sheets

Document	note
AD9837: Low Power, 8.5 mW, 2.3 V to 5.5 V, Programmable Waveform Generator Data Sheet (Rev. A)	PDF 968 kB

Application Notes

Document	note
AN-1248: SPI Interface	PDF 155 kB
AN-1044: Programming the AD5932 for Frequency Sweep and Single Frequency Outputs (Rev. A)	PDF 94 kB
AN-1070: Programming the AD9833/AD9834 (Rev. 0)	PDF 127 kB

User Guides

Document	note
UG-269: Evaluating the AD9837 Low Power, 8.5 mW, 2.3 V to 5.5 V, Programmable Waveform Generator	PDF 691 kB

Technical Books

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 1000+	RoHS
AD9837ACPZ-RL Production	10 ld LFCSP (3x3mm)	REEL 5000	-40 to 125C	1.65	Y
AD9837ACPZ-RL7 Production	10 ld LFCSP (3x3mm)	REEL 1500	-40 to 125C	1.65	Y
AD9837BCPZ-RL Production	10 ld LFCSP (3x3mm)	REEL 5000	-40 to 125C	1.78	Y
AD9837BCPZ-RL7 Production	10 ld LFCSP (3x3mm)	REEL 1500	-40 to 125C	1.78	Y