AD9146BCPZ

Overview

The AD9146BCPZ is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) from Analog Devices. It provides a sample rate of 1000 MSPS with nominal supplies and up to 1230 MSPS with increased supplies. The device features flexible LVDS interfaces for byte or nibble loading, integrated 2×/4× interpolation filters, and a complex modulator. Key specifications include ±2.1 LSB DNL, ±3.7 LSB INL, and a full-scale output current adjustable from 8.7 mA to 31.7 mA. It operates on 3.3 V analog and 1.8 V digital/clock supplies within a -40°C to +85°C temperature range.

Feature Summary

• Dual-channel 16-bit DAC architecture supporting up to 1230 MSPS sampling rates
• Integrated 2×/4× interpolator and complex modulator for flexible carrier placement
• Flexible LVDS interface supporting both byte and nibble load modes
• High-performance low-noise PLL clock multiplier with digital inverse sinc filter

Applications

• Wireless infrastructure systems including W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, and LTE
• Digital high or low intermediate frequency (IF) synthesis
• Transmit diversity applications in multi-antenna setups
• Wideband communications such as LMDS/MMDS and point-to-point links

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel configuration. Ensure that any auxiliary components, such as external resistors for full-scale current adjustment, are included in the system design. Confirm compliance with RoHS directives and moisture sensitivity levels prior to procurement.

Selection Notes

Select this component when high linearity and low noise spectral density are required for direct conversion transmit applications. Consider the power consumption of approximately 1.2 W at 1.0 GSPS and ensure adequate thermal management via the exposed paddle ground plane. Verify that the host processor can support the required LVDS data rates and serial port programming interface.

Part Context

The AD9146BCPZ belongs to the TxDAC+ family of high-speed digital-to-analog converters. It is designed to interface seamlessly with analog quadrature modulators, such as the ADL537x series. The device integrates essential signal processing blocks like gain/offset adjustment and phase correction to simplify the transmitter signal chain.

Replacement Considerations

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