ADS8508 - 具有串行接口的 12 位 250kHz CMOS 模数转换器，2.5V 内部参考

ADS8508是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，ADS8508是具有串行接口的 12 位 250kHz CMOS 模数转换器，2.5V 内部参考，本站介绍了ADS8508的封装应用图解、特点和优点、功能等，并给出了与ADS8508相关的TI元器件型号供参考。

ADS8508 - 具有串行接口的 12 位 250kHz CMOS 模数转换器，2.5V 内部参考 - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADS8508 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8508 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS8508 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW.

The ADS8508 is available in a 20-pin SO package, fully specified for operation over the industrial -40°C to 85°C temperature range.

产品特性

250-kHz SamplingRate
4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges
73-dB SINAD With 45-kHz Input
±0.45 LSB Max INL
±0.45 LSB Max DNL, 12-Bits No Missing Codes
±1 LSB Bipolar Zero Errors
±0.4 PPM/°C Bipolar Zero Error Drift
Six Specified Input Ranges
SPI Compatible Serial Output with Daisy-Chain (TAG) Feature
5-V Supply
Pin-Compatible With ADS7808 (Low Speed) and 16-Bit ADS8509/7809
Uses Internal or External Reference
70-mW Typ Power Dissipation at 250 KSPS
20-Pin SO Package
Simple DSP Interface
APPLICATIONS
- Industrial Process Control
- Data Acquisition Systems
- Digital Signal Processing
- Medical Equipment
- Instrumentation

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