ADS7254集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS7254属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS7254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。

1 Features

1• 16-, 14-, and 12-Bit, Pin-Compatible Family

• Simultaneous Sampling of Two Channels

• Supports Fully-Differential Inputs

• High Speed:

– ADS8354: 16 Bits, 700 kSPS

– ADS7854: 14 Bits, 1 MSPS

– ADS7254: 12 Bits, 1 MSPS

• Excellent DC Performance:

– ADS8354:

– 16-Bit NMC DNL, ±2.5-LSB Max INL

– ADS7854:

– 14-Bit NMC DNL, ±1.5-LSB Max INL

– ADS7254:

– 12-Bit NMC DNL, ±1-LSB Max INL

• Excellent AC Performance:

– ADS8354:

– 93-dB SNR, –100-dB THD

– ADS7854:

– 88-dB SNR, –95-dB THD

– ADS7254:

– 72-dB SNR, –90-dB THD

• Dual, Programmable, and Buffered

2.5-V Internal Reference

• Fully-Specified Over the Extended Industrial

Temperature Range: –40°C to 125°C

• Small Footprint:

WQFN-16 (3-mm × 3-mm) and TSSOP-16

2 Applications

• Motor Control:

Position Measurement Using Encoders

• Optical Networking: EDFA Gain Control Loops

• Protection Relays

• Power Quality Measurement

• Three-Phase Power Controls

• Programmable Logic Controllers

3 Description

The ADS8354, ADS7854, and ADS7254 belong to a

family of pin-compatible, dual, high-speed,

simultaneous-sampling, analog-to-digital converters

(ADCs) that support fully-differential analog inputs.

Each device includes two individually programmable

reference sources that can be used for system-level gain calibration. Also, a flexible serial interface that

can operate over a wide power-supply range enables

easy communication with a large variety of host

controllers. Power consumption for a given throughput can be optimized by using the two low-

power modes supported by the device. All devices

are fully specified over the extended industrial

temperature range (–40°C to 125°C) and are

available in pin-compatible, WQFN-16 (3-mm ×

3-mm) and TSSOP-16 packages.