Analog Devices Inc. 亚德诺半导体 AD9144 16 位四通道数模转换器

亚德诺半导体 AD9139 四通道 DAC 是一款 16 位、高动态范围数模转换器(DAC)，提供达 2.8GSPS 的最高采样速率，可以产生高达奈奎斯特频率的多载波。DAC 输出经过优化，可以与 ADRF672x 模拟正交调制器(AQM)无缝对接。选择 3 线式或 4 线式串行端口接口(SPI)允许对许多内部参数进行编程和回读。满量程输出电流可以在 13.9mA 至 27.0mA 典型范围上进行编程。AD9144 采用 88 引脚 LFCSP 封装，非常适合无线通信、宽带通信、发射分集、多输入多输出（MIMO）、仪器仪表、自动测试设备等。

An optional 3-wire or 4-wire serial port interface (SPI) provides for programming / readback of many internal parameters. Full-scale output current can be programmed over a typical range of 13.9mA to 27.0mA. Available in an 88-lead LFCSP package, AD9144 is ideal for wireless communications, wideband communications, transmit diversity, multiple input / multiple output (MIMO), instrumentation, and automated test equipment.

特性

Supports input data rate >1GSPS
Proprietary low spurious and distortion design
- 6-carrier GSM IMD = 77dBc at 75MHz IF
- SFDR = 82dBc at DC IF, -9dBFS
- Flexible 8-lane JESD204B interface
- Support dual DAC mode at 2.8GSPS
Multiple chip synchronization
- Fixed latency
- Data generator latency compensation
Selectable 1×, 2×, 4×, 8× interpolation filter
- Low power architecture

Input signal power detection
- Emergency stop for downstream analog circuitry protection
Transmit enable function allows extra power saving
High performance, low noise PLL clock multiplier
Digital inverse sinc filter
Low power: 1.6W at 1.6GSPS, 1.7W at 2.0GSPS, full operating conditions
88-lead LFCSP with exposed pad

应用

Wireless communications
- 3G/4G W-CDMA base stations
- Wideband repeaters
- Software defined radios
Instrumentation
Automated test equipment

Wideband communications
- Point-to-point
- Local multipoint distribution service (LMDS) and multichannel multipoint distribution service (MMDS)
Transmit diversity, multiple input/multiple output (MIMO)