AD9837BCPZ-RL

Overview

The AD9837BCPZ-RL is a low-power, programmable waveform generator from Analog Devices. It operates on a 2.3 V to 5.5 V supply and consumes 8.5 mW at 2.3 V. The B-grade variant supports a master clock (MCLK) speed of 16 MHz, enabling a frequency resolution of 0.06 Hz. It features a 28-bit phase accumulator and a 10-bit DAC for sinusoidal, triangular, and square wave outputs. Configuration is managed via a 3-wire SPI interface compatible with DSP standards. The device includes power-down options and functions within an extended temperature range of −40°C to +125°C.

Feature Summary

• Digitally programmable frequency and phase control via software
• Produces sinusoidal, triangular, and square wave outputs
• Integrated 10-bit DAC with onboard 200 Ω load resistor
• Low power consumption with dedicated sleep modes

Applications

• Frequency stimulus and waveform generation
• Liquid and gas flow measurement systems
• Sensory applications including proximity, motion, and defect detection
• Time domain reflectometry (TDR) applications
• Test and medical equipment signal sources

Procurement Notes

Verify the specific grade suffix 'B' in the part number to confirm the 16 MHz MCLK specification, as the 'A' grade is limited to 5 MHz. Confirm the 'RL' suffix indicates reel packaging when sourcing components. Ensure compatibility with the required 3-wire SPI interface timing parameters during integration.

Selection Notes

Select this component for applications requiring precise digital frequency synthesis with minimal power usage. The B-grade version is suitable for higher clock rates up to 16 MHz. Consider the 10-bit DAC resolution and output voltage compliance when designing the analog front end. Verify that the operating temperature range meets the environmental requirements of the target system.

Part Context

This part belongs to the AD9837 series of direct digital synthesis (DDS) waveform generators. It is designed for embedded systems where cost, size, and power efficiency are critical constraints. The device integrates a numerically controlled oscillator, sine lookup table, and DAC into a single 10-lead LFCSP package.

Replacement Considerations

The AD9837ACPZ-RL is the A-grade equivalent with a 5 MHz maximum clock rate. The AD9838 is a related DDS IC but utilizes a different 20-lead package and may require schematic adjustments.