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ADS7870IDBR

更新时间： 2024-11-27 12:21:27
品牌 Logo 应用领域
德州仪器 - TI 转换器模数转换器光电二极管
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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ADS7870IDBR 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：unknownECCN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 APPROXIMATIONJESD-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 mmBase Number Matches：1

ADS7870IDBR 数据手册

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SBAS124C − DECEMBER 1999 − REVISED DECEMBER 2005  
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FEATURES  
DESCRIPTION  
D
D
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.  
D
D
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.  
D
D
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D
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  
D
D
D
D
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  
CS  
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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Copyright 1999−2005, Texas Instruments Incorporated  
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