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ADS7280IRSAR Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza ADS7280IRSAR
Descripción Electrónicos  LOW-POWER, 14-BIT, 1MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

ADS7280IRSAR Datasheet(HTML) 1 Page - Texas Instruments

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1
FEATURES
APPLICATIONS
DESCRIPTION
REF
+IN
REF+
SDI
SCLK
SDO
CDAC
SAR
COMPARATOR
OUTPUT
LATCH
and
3-STATE
DRIVER
CONVERSION
and
CONTROL
LOGIC
-IN
+IN1
+IN0
COM
NC
OSC
_
+
ADS7280
ADS7279
FS/CS
CONVST
EOC/INT/CDI
ADS7279
ADS7280
www.ti.com........................................................................................................................................................................................................ SBAS436 – MAY 2008
LOW-POWER, 14-BIT, 1MHz, SINGLE/DUAL UNIPOLAR INPUT,
ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
• Communications
23
• 2.7V to 5.5V Analog Supply, Low Power:
• Transducer Interface
13.7mW (1MHz, +VA = 3V, +VBD = 1.8V)
• Medical Instruments
• 1MHz Sampling Rate 3V ≤ +VA ≤ 5.5V,
• Magnetometers
900kHz Sampling Rate 2.7V
≤ +VA ≤ 3V
• Industrial Process Control
• Excellent DC Performance:
• Data Acquisition Systems
±0.4LSB Typ, ±1.0LSB Max INL
• Automatic Test Equipment
±0.4LSB Typ, ±1.0LSB Max DNL
±0.8mV Max Offset Error at 3V
±1.25mV Max Offset Error at 5V
The
ADS7279
is
a
low-power,
14-bit,
1MSPS
• Excellent AC Performance at f
i = 10kHz with
analog-to-digital converter (ADC) with a unipolar
85.9dB SNR, 105.3dB SFDR, –100.1dB THD
input. The device includes a 14-bit, capacitor-based
successive approximation register (SAR) ADC with
• Built-In Conversion Clock (CCLK)
inherent sample-and-hold.
• 1.65V to 5.5V I/O Supply:
The ADS7280 is based on the same core and
SPI™/DSP-Compatible Serial Interface
includes a 2-to-1 input MUX with a programmable
SCLK up to 50MHz
TAG bit output option. Both the ADS7279 and
• Comprehensive Power-Down Modes:
ADS7280 offer a high-speed, wide voltage serial
interface, and are capable of daisy-chain mode
Deep Power-Down
operation when multiple converters are used.
Nap Power-Down
These converters are available in 4
× 4 QFN and
Auto Nap Power-Down
TSSOP-16 packages, and are fully specified for
• Unipolar Input Range: 0V to V
REF
operation
over
the
industrial
–40
°C to +85°C
• Software Reset
temperature range.
• Global CONVST (Independent of CS)
Low Power, High-Speed SAR Converter Family
• Programmable Status/Polarity EOC/INT
Type/Speed
500 kSPS
1 MSPS
• 4 × 4 QFN-16 and TSSOP-16 Packages
Single
ADS8327
ADS8329
• Multi-Chip Daisy-Chain Mode
16-bit single-ended
Dual
ADS8328
ADS8330
• Programmable TAG Bit Output
Single
ADS7279
• Auto/Manual Channel Select Mode (ADS7280)
14-bit single-ended
Dual
ADS7280
Single
ADS7229
12-bit single-ended
Dual
ADS7230
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 © 2008, 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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