北京华泱科技有限公司

12位， 1 MSPS ，微功耗，微型SAR模拟数字转换器 12-Bit, 1-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS

Description

The ADS7886 is a 12-bit, 1-MSPS analog-to-digital converter (ADC). The device includes a capacitor based SAR A/D converter with inherent sample and hold. The serial interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.

Features

• 1-MHz Sample Rate Serial Device

• 12-Bit Resolution

• Zero Latency

• 20-MHz Serial Interface

• Supply Range: 2.35 V to 5.25 V

• Typical Power Dissipation at 1 MSPS:

   – 3.9 mW at 3-V VDD

   – 7.5 mW at 5-V VDD

• INL ±1.25 LSB Maximum, ±0.65 LSB (Typical)

• DNL ±1 LSB Maximum, +0.4 / –0.65 LSB (Typical)

• Typical AC Performance: 72.25-dB SINAD, –84-dB THD

• Unipolar Input Range: 0 V to VDD

• Power Down Current: 1 μA

• Wide Input Bandwidth: 15 MHz at 3 dB

• 6-Pin SOT-23 and SC70 Packages

Applications

• Base Band Converters in Radio Communication

• Motor Current and Bus Voltage Sensors in Digital Drives

• Optical Networking (DWDM, MEMS Based Switching)

• Optical Sensors

• Battery-Powered Systems

• Medical Instrumentations

• High-Speed Data Acquisition Systems

• High-Speed Closed-Loop Systems