參數(shù)資料
型號(hào)： ISL267817IUZ
廠商： Intersil
文件頁(yè)數(shù)： 1/18頁(yè)
文件大?。?/td> 0K
描述： IC INTERFACE
標(biāo)準(zhǔn)包裝： 980
系列： *
1
12-Bit Differential Input 200kSPS SAR ADC
ISL267817
The ISL267817 is a 12-bit, 200kSPS sampling SAR-type ADC
which features excellent linearity over supply and temperature
variations, and provides a drop-in compatible alternative to all
ADS7817 performance grades. The robust, fully-differential
input offers high impedance to minimize errors due to leakage
currents, and the specified measurement accuracy is
maintained with input signals up to the supply rails.
The reference accepts inputs between 0.1V to 2.5V, providing
design flexibility in a wide variety of applications. The
ISL267817 also features up to 8kV Human Body Model ESD
survivability.
The serial digital interface is SPI compatible and is easily
interfaced to popular FPGAs and microcontrollers. Operating
from a 5V supply, power dissipation is 2.15mW at a sampling
rate of 200kSPS, and just 25W between conversions utilizing
the Auto Power-Down mode, making the ISL267817 an
excellent solution for remote industrial sensors and
battery-powered instruments. It is available in the compact,
industry-standard 8 Lead SOIC and MSOP packages and is
specified for operation over the industrial temperature range
(-40°C to +85°C).
Features
Drop-In Compatible with ADS7817 (All Performance Grades)
Differential Input
Simple SPI-compatible Serial Digital Interface
Guaranteed No Missing Codes
200kHz Sampling Rate
+4.75V to +5.25V Supply
Low 2.15mW Operating Power (200kSPS)
Power-down Current between Conversions: 3A
Excellent Differential Non-Linearity (1.0LSB max)
Low THD: -85dB (typ)
Pb-Free (RoHS Compliant)
Available in SOIC and MSOP Packages
Applications
Remote Data Acquisition
Battery Operated Systems
Industrial Process Control
Energy Measurement
Data Acquisition Systems
Pressure Sensors
Flow Controllers
FIGURE 1. BLOCK DIAGRAM
FIGURE 2. DIFFERENTIAL LINEARITY ERROR vs CODE
SERIAL
INTERFACE
+VCC
VREF
GND
+IN
–IN
DCLOCK
DOUT
CS/SHDN
DA
C
D
AC
SAR
LOGIC
VREF
-1.00
-0.75
-0.50
-0.25
0.00
0.25
0.50
0.75
1.00
0
512
1024 1536 2048 2560 3072 3584 4096
April 19, 2012
FN7877.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas Inc. 2011, 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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