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ADS7955-Q1 PDF预览

ADS7955-Q1

更新时间： 2024-09-13 12:50:35
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
32页 628K
描述
10-Bit, 1 MSPS, 8-Channel, Single-Ended, MicroPower, Serial Interface ADC

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ADS7955-Q1 数据手册

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ADS7955-Q1  
www.ti.com  
SLAS814 –DECEMBER 2011  
10-Bit, 1 MSPS, 8-Channel, Single-Ended, MicroPower, Serial Interface ADC  
Check for Samples: ADS7955-Q1  
1
FEATURES  
DESCRIPTION  
The ADS7955-Q1 is  
analog-to-digital converter.  
a
10-bit multichannel  
•
•
•
•
•
•
•
•
Qualified for Automotive Applications  
1-MHz Sample Rate Serial Devices  
10-Bit Resolution  
The device includes a capacitor based SAR A/D  
converter with inherent sample and hold.  
Zero Latency  
The device accepts a wide analog supply range from  
2.7V to 5.25V. Very low power consumption makes  
this device suitable for battery-powered and isolated  
power supply applications.  
20-MHz Serial Interface  
Analog Supply Range: 2.7 to 5.25 V  
I/O Supply Range: 1.7 to 5.25 V  
Two SW Selectable Unipolar, Input Ranges: 0  
to 2.5V and 0 to 5V  
A wide 1.7V to 5.25V I/O supply range facilitates a  
glue-less interface with the most commonly used  
CMOS digital hosts.  
•
•
Auto and Manual Modes for Channel Selection  
8-Channel Device can Share 16 Channel  
Device Footprint  
The serial interface is controlled by CS and SCLK for  
easy connection with microprocessors and DSP.  
•
•
Two Programmable Alarm Levels per Channel  
The input signal is sampled with the falling edge of  
CS. It uses SCLK for conversion, serial data output,  
and reading serial data in. The device allows auto  
sequencing of preselected channels or manual  
selection of a channel for the next conversion cycle.  
Four Individually Configurable GPIOs for  
TSSOP Package Devices  
•
Typical Power Dissipation: 14.5 mW (+VA = 5  
V, +VBD = 3 V) at 1 MSPS  
There are two software selectable input ranges (0V -  
2.5V and 0V - 5V), four individually configurable  
GPIOs, and two programmable alarm thresholds per  
channel. These features make the device suitable for  
most data acquisition applications.  
•
•
•
Power-Down Current (1 μA)  
Input Bandwidth (47 MHz at 3 dB)  
30-Pin TSSOP Package  
APPLICATIONS  
The device offers an attractive power-down feature.  
This is extremely useful for power saving when the  
device is operated at lower conversion speeds.  
•
•
•
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•
•
•
PLC / IPC  
Battery Powered Systems  
Medical Instrumentation  
Digital Power Supplies  
Touch Screen Controllers  
High-Speed Data Acquisition Systems  
High-Speed Closed-Loop Systems  
1
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011, Texas Instruments Incorporated  
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ADS7955-Q1 替代型号

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