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ISL267452IHZ-T データシート(PDF) 1 Page - Intersil Corporation

部品番号 ISL267452IHZ-T
部品情報  12-Bit, 555kSPS SAR ADC
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メーカー  INTERSIL [Intersil Corporation]
ホームページ  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL267452IHZ-T データシート(HTML) 1 Page - Intersil Corporation

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12-Bit, 555kSPS SAR ADC
ISL267452
The ISL267452 is a 12-bit, 555kSPS sampling SAR-type ADC
featuring excellent linearity over supply and temperature
variations, and is drop-in compatible with the AD7452. 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 from 0.1V to 2.2V for 3V operation
and 0.1V to 3.5V for 5V operation, which provides design
flexibility in a wide variety of applications. The ISL267452 also
features up to 8kV Human Body Model ESD survivability.
The serial digital interface is SPI compatible and is easily
interfaced to all popular FPGAs and microcontrollers. Power
dissipation is 7mW at a sampling rate of 555kSPS, and just 5µW
between conversions utilizing Auto Power-Down mode (with a 5V
supply), making the ISL267452 an excellent solution for remote
industrial sensors and battery-powered instruments.
The ISL267452 is available in an 8 LD SOT-23 package, and is
specified for operation over the Industrial temperature range
(-40°C to +85°C).
Features
• Drop-in Compatible with AD7452
• Differential Input (Span = 2VREF)
• Simple SPI-compatible Serial Digital Interface
• Guaranteed No Missing Codes
• 555kHz Sampling Rate
• 3V or 5V Operation
•Low Operating Current
- 1.25mA at 555kSPS with 3V Supplies
- 1.70mA at 555kSPS with 5V Supplies
• Power-down Current between Conversions: 1µA
• Excellent Differential Non-Linearity
• Low THD: -83dB (typ)
• Pb-Free (RoHS Compliant)
• Available in SOT-23 Package
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
VDD
VREF
GND
VIN+
VIN
SCLK
SDATA
CS
SAR
LOGIC
VREF
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0
1024
2048
3072
4096
CODE
July 26, 2012
FN8255.0
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. 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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