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Burr-Brown Corporation - MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER

Numéro de référence ADS8481
Description MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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ADS8481 fiche technique
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BurrĆBrown Products
from Texas Instruments
ADS8481
SLAS385A – FEBRUARY 2006 – REVISED MARCH 2006
18-BIT, 1-MSPS, PSEUDO-DIFFERENTIAL UNIPOLAR INPUT, MICROPOWER SAMPLING
ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
FEATURES
0 to 1 MSPS Sampling Rate
18-Bit NMC Ensured Over Temperature
Low ±0.1 mV Offset Error
Low 0.2 ppm/°C Offset Error Temperature
Drift
Low 0.6 ppm/°C Gain Error Temperature Drift
Zero Latency
Low Power: 220 mW at 1 MSPS
Unipolar Single-Ended Input Range: 0 V to
Vref
Onboard Reference
Onboard Reference Buffer
High-Speed Parallel Interface
Wide Digital Supply 2.7 V ~ 5.25 V
8-/16-/18-Bit Bus Transfer
7x7 QFN Package
APPLICATIONS
Medical Instruments
Optical Networking
Transducer Interface
High Accuracy Data Acquisition Systems
Magnetometers
DESCRIPTION
The ADS8481 is an 18-bit, 1-MSPS A/D converter
with an internal 4.096-V reference and a
pseudo-differential unipolar single-ended input. The
device includes a 18-bit capacitor-based SAR A/D
converter with inherent sample and hold. The
ADS8481 offers a full 18-bit interface, a 16-bit option
where data is read using two read cycles, or an 8-bit
bus option using three read cycles.
The ADS8481 is available in a 7x7 QFN package
and is characterized over the industrial –40°C to
85°C temperature range.
TYPE/SPEED
18-Bit Pseudo-Diff
18-Bit Pseudo-Bipolar, Fully Diff
16-Bit Pseudo-Diff
16-Bit Pseudo-Bipolar, Fully Diff
14-Bit Pseudo-Diff
12-Bit Pseudo-Diff
HIGH SPEED SAR CONVERTER FAMILY
500 kHz
ADS8383
580 kHz
ADS8381
ADS8380(S)
ADS8382(S)
750 kHz
ADS8371
1 MHz
ADS8481
ADS8482
ADS8471
ADS8472
ADS7886
1.25 MHz
ADS8401
ADS8405
ADS8402
ADS8406
ADS7890 (s)
2 MHz
ADS8411
ADS8412
ADS7883
3 MHz
ADS7891
4MHz
ADS7881
REFOUT
+IN
−IN
REFIN
+
_ CDAC
4.096-V
Internal
Reference
SAR
Comparator
Clock
Output
Latches
and
3-State
Drivers
Conversion
and
Control Logic
BYTE
16-/8-Bit
Parallel DATA
Output Bus
BUS 18/16
CONVST
BUSY
CS
RD
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 © 2006, Texas Instruments Incorporated
DataSheet4 U .com

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