AD9837BCPZ-RL7

Overview

The AD9837BCPZ-RL7 is a low-power, programmable waveform generator from Analog Devices. It features a 10-bit DAC and generates sine, triangular, and square waves. The B-grade variant supports a maximum master clock (MCLK) speed of 16 MHz, enabling an output update rate of 16 MSPS. With a 28-bit frequency register, it achieves a resolution of 0.06 Hz at 16 MHz MCLK. Power consumption is 8.5 mW at 2.3 V. It operates on a 2.3 V to 5.5 V supply and includes a 3-wire SPI interface. The device is housed in a 10-lead LFCSP package and functions within an extended temperature range of −40°C to +125°C.

Feature Summary

• Digitally programmable frequency and phase control via software
• Low power consumption with dedicated sleep modes for unused sections
• Integrated 10-bit DAC with onboard 200 Ω load resistor
• Standard 3-wire serial interface compatible with DSP and microcontroller standards

Applications

• Frequency stimulus and waveform generation
• Liquid and gas flow measurement systems
• Sensor 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' to confirm the 16 MHz maximum clock speed specification, as distinct from the A-grade variant limited to 5 MHz. Confirm the 'RL7' packaging designation matches the required reel quantity for production integration. Ensure compatibility with the 10-lead LFCSP_WD footprint during PCB layout verification.

Selection Notes

Select this component when a low-cost, single-supply DDS solution is required for generating precise analog waveforms. The B-grade version is appropriate for applications demanding higher output frequencies up to 8 MHz. Consider the 28-bit resolution for fine frequency tuning requirements. Evaluate the power-down capabilities if battery life is a critical constraint in the target embedded system.

Part Context

The AD9837 belongs to Analog Devices' direct digital synthesis (DDS) family, designed for cost-sensitive and size-constrained applications. It integrates a numerically controlled oscillator, SIN ROM, and DAC into a compact 10-lead package. This series targets industrial and communication sectors where small form factors and low power are prioritized over ultra-high dynamic performance found in larger DDS devices.

Replacement Considerations

The AD9837ACPZ-RL7 serves as the primary alternative, offering identical functionality but with a reduced maximum MCLK speed of 5 MHz. Designers requiring higher frequency outputs must retain the B-grade part. Other members of the AD983x family may share pinouts but differ in specifications or feature sets.