AD9833 waveform generator connection guide

AD9833 waveform generator MSOP-10 wiring guide with power, signal assignments, and bench checks.

MSOP-10

10 contacts Current package

Analog Devices · RM-10 mini small outline.

Set up the 3.3 V supplies

Required

Use a local 3.3 V supply and a common ground plane. Place the bypass capacitors close to the part.

3.3 V
- VDD (2)
- C1.1
- C2.1
- C3.1
Ground
- AGND (9)
- DGND (4)
- C1.2
- C2.2
- C4.2
- Clock ground
- Controller ground
DAC bias
- COMP (1)
- C3.2
Digital regulator
- CAP/2.5V (3)
- C4.1

Bench checks

Check VDD at the package and the CAP/2.5V node near 2.5 V before programming.

Analog Devices AD9833 Rev. G, Table 4 and Grounding and Layout. Bias bypass follows UG-272.

Connection scenarios

Generate a 1 kHz sine wave

Apply a 25 MHz, 3.3 V CMOS clock and connect a 3.3 V controller. Send 0x2100, 0x69F1, 0x4000, 0xC000 and 0x2000 in separate 16-bit frames.

3.3 V
- VDD (2)
- C1.1
- C2.1
- C3.1
Ground
- AGND (9)
- DGND (4)
- C1.2
- C2.2
- C4.2
- Clock ground
- Controller ground
DAC bias
- COMP (1)
- C3.2
Digital regulator
- CAP/2.5V (3)
- C4.1
Reference clock
- MCLK (5)
- 25 MHz CMOS oscillator output
Serial data
- SDATA (6)
- Controller MOSI
Serial clock
- SCLK (7)
- Controller serial clock
Frame select
- FSYNC (8)
- Controller chip select
Waveform
- VOUT (10)
- High-impedance oscilloscope input

Bench checks

Verify 16 falling clock edges while FSYNC is low in each frame.
Check for a sine wave near 1 kHz after reset clears. The tuning word is round(1000 × 2²⁸ ÷ 25,000,000) = 10737.

Analog Devices AD9833 Rev. G, Table 6 and Figures 27–28. The tuning word is calculated for this test.

MSOP-10 wiring map

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

Top view. Locate the package index before counting counterclockwise from pin 1.

Selected pin details

6 · SDATA

Input · Data

Serial data input. Send the most significant bit first.

Analog Devices AD9833 Rev. G, Table 4

Electrical limits · Pin in the reference

Models and documents

The map covers the B-grade MSOP order codes in Rev. G, including the W automotive grade. Refer to Analog Devices for automotive-grade electrical limits and enhanced-product qualification.

AD9833BRMZ: RM-10 pinout. B-grade operating range −40 to +105 °C.
AD9833BRMZ-REEL: RM-10 pinout. B-grade operating range −40 to +105 °C.
AD9833BRMZ-REEL7: RM-10 pinout. B-grade operating range −40 to +105 °C.
AD9833WBRMZ-REEL: RM-10 pinout. B-grade operating range −40 to +105 °C.

Analog Devices AD9833 Rev. G· Pin functions, operating limits and register programming.
Analog Devices UG-272· Evaluation board schematic and bias capacitor.
Source register· Document revisions, applicable order codes, consulted sections and available file checksums.