GENERAL DESCRIPTION

The AD9142A is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1600 MSPS, permitting a multicarrier generation up to the Nyquist frequency. The AD9142A TxDAC+® includes features optimized for direct conversion transmit applications, including complex digital modulation, input signal power detection, and gain, phase, and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series and the ADRF670x series from Analog Devices, Inc. A 3-wire serial port interface provides for the programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 9 mA to 33 mA. The AD9142A is available in a 72-lead LFCSP.

FEATURES

Supports input data rate up to 575 MHz

Very small inherent latency variation: <2 DAC clock cycles

Proprietary low spurious and distortion design

6-carrier GSM ACLR = 79 dBc at 200 MHz IF

SFDR > 85 dBc (bandwidth = 300 MHz) at ZIF

Flexible 16-bit LVDS interface

Supports word and byte load

Data interface DLL

Sample error detection and parity

Multiple chip synchronization

Fixed latency and data generator latency compensation

Selectable 2×, 4×, 8× interpolation filter

Low power architecture

fS/4 power saving coarse mixer

Input signal power detection

Emergency stop for downstream analog circuitry

protection

FIFO error detection

On-chip numeric control oscillator allows carrier placement

anywhere in the DAC Nyquist bandwidth

Transmit enable function for extra power saving

High performance, low noise PLL clock multiplier

Digital gain and phase adjustment for sideband suppression

Digital inverse sinc filter

Low power: 1.8 W at 1.6 GSPS, 1.5 W at 1.25 GSPS, full

operating conditions

72-lead LFCSP

APPLICATIONS

Wireless communications: 3G/4G and MC-GSM base stations,

wideband repeaters, software defined radios

Wideband communications: point-to-point, LMDS/MMDS

Transmit diversity/MIMO

Instrumentation

Automated test equipment

AD9142ABCPZRL属于集成电路（IC） > 数模转换器（DAC）。亚德诺半导体技术有限公司制造生产的AD9142ABCPZRL数模转换器（DAC）数模转换器（DAC、D/A、D2A 或 D 转 A）可将数字信号转换为缓冲或无缓冲的模拟电压或电流。DAC 架构是否适合特定应用，要取决于分辨率和采样频率。DAC 通常用于音乐播放器，将数字数据流转换为模拟音频流。它们还用于电视和手机，将数字视频数据转换为模拟视频信号，再连接到屏幕驱动器，以显示单色或彩色图像。