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TSA7887

更新时间： 2024-02-15 15:01:27
品牌 Logo 应用领域
TOUCHSTONE /
页数 文件大小 规格书
20页 1374K
描述
A Micropower, 2-channel, 125-ksps, Serial-Output 12-bit SAR ADC

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TSA7887 技术参数

生命周期：Obsolete包装说明：SOP,
Reach Compliance Code：unknownHTS代码：8542.39.00.01
风险等级：5.81最大模拟输入电压：5.25 V
最小模拟输入电压：最长转换时间：7.25 µs
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDSO-G8
长度：4.9 mm最大线性误差 (EL)：1%
模拟输入通道数量：2位数：12
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
输出位码：BINARY输出格式：SERIAL
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
采样速率：0.125 MHz采样并保持/跟踪并保持：TRACK
座面最大高度：1.75 mm标称供电电压：3 V
表面贴装：YES温度等级：AUTOMOTIVE
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

TSA7887 数据手册

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TSA7887  
A Micropower, 2-channel, 125-ksps, Serial-Output 12-bit SAR ADC  
FEATURES  
DESCRIPTION  
Alternate Source for AD7887  
The TSA7887 – an alternate source for the AD7887 -  
Single-supply Operation: +2.7V to +5.25V  
INL: ±1LSB - TSA7887B  
is  
a
self-contained,  
2-channel,  
high-speed,  
micropower, 12-bit analog-to-digital converter (ADC)  
that operates from a single +2.7V to +5.25V power  
supply. The TSA7887 is capable of a 125-ksps  
throughput rate with an external 2MHz serial clock  
and draws 0.85mA supply current.  
±2LSBs - TSA7887A  
One or Two Single-ended Analog Inputs  
Internal Wide-bandwidth Track-and-Hold  
Internal +2.5-V Reference  
Flexible Power/Throughput-Rate Management  
0.85mA at 125ksps (Internal VREF ON)  
0.7mA at 125ksps (Internal VREF OFF)  
Shutdown-mode Supply Current: 1μA (max)  
SPI®/QSPI™/MICROWIRE™/DSP-Compatible  
The wideband input track-and-hold acquires signals  
in 500ns and features a single-ended sampling  
topology. Output data coding is straight binary and  
the ADC is capable of converting full power signals  
up to 2.5 MHz. The ADC also contains an integrated  
2.5V reference or the VREF pin can be overdriven by  
an external reference.  
1
Serial Interfaces  
Operating Temperature Range:  
-40ºC to +125ºC  
8-pin SOIC and MSOP Packaging  
The TSA7887’s provides one or two analog inputs  
each with an analog input range from 0 to VREF. In  
two-channel operation, the analog input range is 0V  
to VDD. Efficient circuit design ensures low power  
consumption of 2mW (typical) for normal operation  
and 3μW in power-down operation.  
APPLICATIONS  
Instrumentation and Control Systems  
High-Speed Modems  
Battery-powered systems:  
The TSA7887 is fully specified from -40ºC to +125ºC  
and is available in 8-pin SOIC and MSOP packages.  
Personal Digital Assistants, Medical  
Instruments, Mobile Communications  
FUNCTIONAL BLOCK DIAGRAM  
1 SPI and QSPI are trademarks of Motorola, Inc.  
MICROWIRE is a trademark of National  
Semiconductor Corporation  
The Touchstone Semiconductor logo is a registered trademark of  
Touchstone Semiconductor, Incorporated.  
Page 1  
© 2012 Touchstone Semiconductor, Inc. All rights reserved.  
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