AD9142ABCPZRL

Overview

The AD9142ABCPZRL is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) from Analog Devices. It supports a maximum sample rate of 1600 MSPS and features the TxDAC+ architecture optimized for direct conversion transmit applications. The device includes an on-chip numeric control oscillator (NCO), selectable interpolation filters (2×, 4×, 8×), and a low power PLL clock multiplier. Key specifications include a differential nonlinearity (DNL) of ±2.1 LSB, integral nonlinearity (INL) of ±3.7 LSB, and a full-scale output current range of 9 mA to 33 mA. It operates with AVDD33 at 3.3 V and digital/clock supplies at 1.8 V, housed in a 72-lead LFCSP package.

Feature Summary

• Dual-channel 16-bit DAC with 1600 MSPS update rate
• Integrated NCO allows carrier placement anywhere in the Nyquist bandwidth
• Supports 2×, 4×, and 8× interpolation filters
• Low inherent latency variation (typical 1 DACCLK cycle)
• Flexible LVDS data interface with DLL support

Applications

• Wireless communications: 3G/4G and MC-GSM base stations
• Wideband communications: point-to-point, LMDS/MMDS
• Software defined radios
• Transmit diversity/MIMO systems
• Instrumentation and automated test equipment

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging when ordering. Confirm the 'A' grade designation matches required performance tolerances such as DNL and INL limits. Ensure the 72-lead LFCSP thermal pad is properly soldered to the ground plane for adequate heat dissipation. Check for RoHS compliance documentation if required by local regulations.

Selection Notes

Select this component for applications requiring high linearity and wide signal bandwidth up to the Nyquist frequency. Consider the power consumption of approximately 1.8 W at 1.6 GSPS when designing thermal management solutions. Verify that the host system can provide the necessary LVDS data rates up to 575 MHz and compatible clock signals for the internal PLL.

Part Context

The AD9142ABCPZRL belongs to the AD9142A family of TxDAC+ converters. It is designed to interface seamlessly with analog quadrature modulators like the ADL537x series. The device simplifies system design through fixed latency and multiple chip synchronization capabilities, making it suitable for multi-channel array configurations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.