EVAL-AD7357EDZ

• Product Introduction

EVAL-AD7357EDZ Differential Input, Dual-Channel, Simultaneous Sampling, 4.25 MSPS, 14-Bit, Successive Approximation (SAR) Analog-to-Digital Converter (ADC) Samples and Purchase

The AD7357 is a dual-channel, 14-bit, high-speed, low-power successive approximation (SAR) analog-to-digital converter (ADC) that operates from a single 2.5 V supply with up to 4.25 MSPS throughput. The device has two built-in ADCs, each preceded by a low-noise, wide-bandwidth sample-hold circuitry that can handle input frequencies above 110 MHz.

The conversion process and data acquisition use standard control inputs and are easy to connect with a microprocessor or digital signal processor (DSP). Its input signal is sampled at the falling edge of the CS while the conversion begins. The changeover time is determined by the SCLK frequency.

The AD7357 features advanced design techniques that enable extremely low power consumption at high throughput rates. It operates from a 2.5 V supply with a throughput rate of 4.25 MSPS and a typical power consumption of 14 mA. Because of the ultra-low quiescent current, the device also has flexible throughput rates and power management capabilities in normal mode.

The analog input range is differential common-mode +/- Vref/2. The AD7357 has a built-in 2.048 V reference or an external reference.

The AD7357 is available in a 16-pin ultra-thin compact package (TSSOP).

Product Focus

1. 具备两个完整ADC的功能。可以实现两个通道同步采样和转换。两个通道的转换结果可通过独立的数据线路同时获得，或如果仅有一个串行端口可用，则通过一条数据线路先后获得。
2. 高吞吐速率、低功耗。AD7357提供4.25 MSPS吞吐速率，功耗为36 mW。
3. 同步采样。该器件采用两个标准逐次逼近型ADC，通过CS输入和一次性转换控制能够精确控制采样时间。

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• 汽车雷达
• 数据采集系统
• 运动控制
• I/Q解调
• RFID读卡器

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