AD7450BRMZ集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

AD7450BRMZ属于集成电路（IC）的模数转换器（ADC）。由亚德诺半导体技术有限公司制造生产的AD7450BRMZ模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。

GENERAL DESCRIPTION

The AD7450 is a 12-bit, high-speed, low power, successive approximation (SAR) analog-to-digital converter that features a fully differential analog input. It operates from a single 3 V or 5 V power supply and features throughput rates up to 833 kSPS or 1 MSPS, respectively.

This part contains a low noise, wide bandwidth, differential track and-hold amplifier (T/H) that can handle input frequencies in excess of 1 MHz with the –3 dB point typically being 20 MHz. The reference voltage for the AD7450 is applied externally to the VREF pin and can be varied from 100 mV to 3.5 V, depending on the power supply and what suits the application. The value of the reference voltage determines the common-mode voltage range of the part. With this truly differential input structure and variable reference input, the user can select a variety of input ranges and bias points.

FEATURES

Fast Throughput Rate: 1 MSPS

Specified for VDD of 3 V and 5 V

Low Power at Max Throughput Rate:

3.75 mW Max at 833 kSPS with 3 V Supplies

9 mW Max at 1 MSPS with 5 V Supplies

Fully Differential Analog Input

Wide Input Bandwidth:

70 dB SINAD at 300 kHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

High-Speed Serial Interface—SPITM/QSPI™ MICROWIRE™/DSP Compatible

Power-Down Mode: 1 μA Max

8-Lead μSOIC and SOIC Packages

APPLICATIONS

Transducer Interface

Battery-Powered Systems

Data Acquisition Systems

Portable Instrumentation

Motor Control

Communications