ADS7870

更新时间： 2024-01-29 19:12:34

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
43页	494K
描述
12-BIT, 52-kSPS, DATA ACQUISITION SYSTEM WITH ANALOG-TO-DIGITAL CONVERTER, MUX, PGA, AND REFERENCE

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ADS7870 技术参数

生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	SSOP, SSOP28,.3	针数：	28
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.73
最大模拟输入电压：	5.7 V	最小模拟输入电压：	-0.2 V
转换器类型：	ADC, SUCCESSIVE APPROXIMATION	JESD-30 代码：	R-PDSO-G28
长度：	10.2 mm	最大线性误差 (EL)：	0.061%
模拟输入通道数量：	8	位数：	12
功能数量：	1	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-40 °C
输出位码：	BINARY, 2'S COMPLEMENT BINARY	输出格式：	SERIAL
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装等效代码：	SSOP28,.3	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	电源：	3/5 V
认证状态：	Not Qualified	采样速率：	0.052 MHz
座面最大高度：	2 mm	子类别：	Other Converters
标称供电电压：	5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
宽度：	5.3 mm	Base Number Matches：	1

ADS7870 数据手册

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SBAS124C − DECEMBER 1999 − REVISED DECEMBER 2005

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FEATURES

DESCRIPTION

PGA Gains: 1, 2, 4, 5, 8, 10, 16, 20 V/V

Programmable Input (Up to 4-Channel

Differential/Up to 8-Channel Single-Ended or

Some Combination)

The ADS7870 (US patents 6140872, 6060874) is a

complete low-power data acquisition system on a single

chip. It consists of a 4-channel differential/8-channel

single-ended multiplexer, precision programmable gain

amplifier, 12-bit successive approximation analog-to-

digital (A/D) converter, and a precision voltage reference.

1.15-V, 2.048-V, or 2.5-V Internal Reference

SPI/DSP Compatible Serial Interface

(≤ 20 MHz)

Throughput Rate: 52 kSamples/sec

The programmable-gain amplifier provides high input

impedance, excellent gain accuracy, good common-mode

rejection, and low noise.

Error Overload Indicator

For many low-level signals, no external amplification or

impedance buffering is needed between the signal source

and the A/D input.

Programmable Output 2s Complement/Binary

2.7-V to 5.5-V Single Supply Operation

4-Bit Digital I/O Via Serial Interface

Pin-Compatible With ADS7871

SSOP-28 Package

The offset voltage of the PGA is auto-zeroed. Gains of 1,

2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125

mV to produce full-scale digital outputs.

The ADS7870 contains an internal reference, which is

trimmed for high initial accuracy and stability vs

temperature. Drift is typically 10 ppm/°C. An external

reference can be used in situations where multiple

ADS7870s share a common reference.

APPLICATIONS

Portable Battery-Powered Systems

Low-Power Instrumentation

Low-Power Control Systems

Smart Sensor Applications

The serial interface allows the use of SPI, QSPI,

Microwire, and 8051-family protocols, without glue logic.

BUFIN

BUFOUT/REFIN

REF

VREF

CCLK

Oscillator

LN0

LN1

LN2

LN3

LN4

LN5

LN6

LN7

OSC ENABLE

BUSY

12-BIT

A/D

PGA

MUX

CONVERT

RESET

RISE/FALL

Serial

Interface

SCLK

I/O0

I/O1

I/O2

I/O3

Digital

I/O

DIN

Registers

DOUT

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

QSPI and SPI are trademarks of Motorola, Inc.

Microwire is a trademark of National Semiconductor Corporation.

All other trademarks are the property of their respective owners.

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与ADS7870相关器件

型号	品牌	描述	获取价格	数据表
ADS7870EA	BB	12-Bit ADC, MUX, PGA and Internal Reference DATA ACQUISITION SYSTEM	获取价格
ADS7870EA	TI	12-BIT, 52-kSPS, DATA ACQUISITION SYSTEM WITH ANALOG-TO-DIGITAL CONVERTER, MUX, PGA, AND R	获取价格
ADS7870EA/1K	TI	12-BIT, 52-kSPS, DATA ACQUISITION SYSTEM WITH ANALOG-TO-DIGITAL CONVERTER, MUX, PGA, AND R	获取价格
ADS7870EA/1KG4	TI	12-BIT, 52-kSPS, DATA ACQUISITION SYSTEM WITH ANALOG-TO-DIGITAL CONVERTER, MUX, PGA, AND R	获取价格
ADS7870EA/250	TI	8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO28, SSOP-28	获取价格
ADS7870EAG4	TI	12-BIT, 52-kSPS, DATA ACQUISITION SYSTEM WITH ANALOG-TO-DIGITAL CONVERTER, MUX, PGA, AND R	获取价格

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