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ADS1278-HT Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza ADS1278-HT
Descripción Electrónicos  OCTAL SIMULTANEOUS-SAMPLING 24-BIT ANALOG-TO-DIGITAL CONVERTER
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS1278-HT Datasheet(HTML) 1 Page - Texas Instruments

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ADS1278-HT
www.ti.com
SBAS447E – MARCH 2009 – REVISED APRIL 2013
OCTAL SIMULTANEOUS-SAMPLING 24-BIT ANALOG-TO-DIGITAL CONVERTER
Check for Samples: ADS1278-HT
1
FEATURES
APPLICATIONS
23
Simultaneously Measure Eight Channels
Down-Hole Drilling
Up to 128-kSPS Data Rate
High Temperature Environments
AC Performance:
Vibration/Modal Analysis
62-kHz Bandwidth
Multi-Channel Data Acquisition
111-dB SNR (High-Resolution Mode)
Acoustics/Dynamic Strain Gauges
–108-dB THD
Pressure Sensors
DC Accuracy:
0.8-
μV/°C Offset Drift
DESCRIPTION
1.3-ppm/°C Gain Drift
Based on the single-channel ADS1271, the ADS1278
Selectable Operating Modes:
(octal) is a 24-bit, delta-sigma (
ΔΣ) analog-to-digital
High-Speed: 128 kSPS, 106 dB SNR
converter (ADC) with data rates up to 128 k samples
High-Resolution: 52 kSPS, 111 dB SNR
per second (SPS), allowing simultaneous sampling of
eight channels.
Low-Power: 52 kSPS, 31 mW/ch
Low-Speed: 10 kSPS, 7 mW/ch
Traditionally, industrial delta-sigma ADCs offering
Linear Phase Digital Filter
good drift performance use digital filters with large
passband droop. As a result, they have limited signal
SPI™ or Frame-Sync Serial Interface
bandwidth
and
are
mostly
suited
for
dc
Low Sampling Aperture Error
measurements.
High-resolution
ADCs
in
audio
Modulator Output Option (digital filter bypass)
applications offer larger usable bandwidths, but the
offset and drift specifications are significantly weaker
Analog Supply: 5 V
than respective industrial counterparts. The ADS1278
Digital Core: 1.8 V
combines these types of converters, allowing high-
I/O Supply: 1.8 V to 3.3 V
precision industrial measurement with excellent dc
and ac specifications.
Currently Available in an HTQFP-64
PowerPAD™ package, an 84-Pin HFQ Package
The
high-order,
chopper-stabilized
modulator
and a KGD Chiptray Option
achieves very low drift with low in-band noise. The
onboard decimation filter suppresses modulator and
SUPPORTS EXTREME TEMPERATURE
signal out-of-band noise. These ADCs provide a
APPLICATIONS
usable signal bandwidth up to 90% of the Nyquist
rate with less than 0.005 dB of ripple.
Controlled Baseline
Four operating modes allow for optimization of speed,
One Assembly/Test Site
resolution, and power. All operations are controlled
One Fabrication Site
directly by pins; there are no registers to program.
Available in Extreme (–55°C/210°C)
The device is fully specified over the extended
Temperature Range (1)
industrial range (–55°C to 210°C) and is available in
an HTQFP-64 PowerPAD package (-55°C to 175°C),
Extended Product Life Cycle
an 84-pin HFQ package and a KGD chiptray option.
Extended Product-Change Notification
Product Traceability
Texas Instruments High Temperature Products
Utilize Highly Optimized Silicon (Die) Solutions
With Dsign and Process Enhancements to
Maximize Performance Over Extended
Temperatures
(1)
Custom temperature ranges available
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.
2
SPI is a trademark of Motorola, Inc.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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