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ADS8327 数据手册 - Burr Brown
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ADS8327数据手册
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FEATURES APPLICATIONS
DESCRIPTION
CDAC
_
+
Output
Latches
and
3-State
Drivers
BYTE
16-/8-Bit
ParallelDA TA
OutputBus
SAR
Conversion
and
ControlLogic
Comparator
Clock
+IN
−IN
REFIN
CONVST
BUSY
CS
RD
4.096-V
Internal
Reference
REFOUT
ADS8472
SLAS514 – DECEMBER 2006
16-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER
SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE,
REFERENCE
• Medical Instruments
• 0 to 1-MHz Sample Rate
• Optical Networking
• ± 0.4 LSB Typ, ± 0.65 LSB Max INL
• Transducer Interface
• ± 0.3 LSB Typ, ± 0.5 LSB Max DNL
• High Accuracy Data Acquisition Systems
• 16-Bit NMC Ensured Over Temperature
• Magnetometers
• ± 0.1-mV Offset Error
• ± 0.05-PPM/ ° C Offset Error Drift
• ± 0.035 %FSR Gain Error
The ADS8472 is an 16-bit, 1-MSPS A/C converter
• ± 0.4-PPM/ ° C Gain Error Drift
with an internal 4.096-V reference and a
• 95dB SNR, -120dB THD, 123dB SFDR
pseudo-bipolar, fully differential input. The device
includes a 16-bit capacitor-based SAR A/D converter
• Zero Latency
with inherent sample and hold. The ADS8472 offers
• Low Power: 225 mW at 1 MSPS
a full 16-bit interface or an 8-bit bus option using two
• Unipolar Differential Input Range: V
ref
to –Vref
read cycles.
• Onboard Reference with 6 PPM/ ° C Drift
The ADS8472 is available in a 48-lead 7x7 QFN
• Onboard Reference Buffer
package and is characterized over the industrial
–40 ° C to 85 ° C temperature range.
• High-Speed Parallel Interface
• Wide Digital Supply 2.7 V to 5.25 V
• 8-/16-Bit Bus Transfer
• 48-Pin 7x7 QFN Package
HIGH SPEED SAR CONVERTER FAMILY
TYPE/SPEED 500 kHz ~600 kHz 750 kHz 1 MHz 1.25 MHz 2 MHz 3 MHz 4MHz
ADS8383 ADS8381 ADS8481
18-Bit Pseudo-Diff
ADS8380 (s)
18-Bit Pseudo-Bipolar, Fully Diff ADS8382 (s) ADS8482
ADS8327 ADS8370 (s) ADS8371 ADS8471 ADS8401 ADS8411
16-Bit Pseudo-Diff
ADS8328 ADS8372 (s) ADS8405 ADS8410 (s)
ADS8472 ADS8402 ADS8412 ADS8422
16-Bit Pseudo-Bipolar, Fully Diff
ADS8406 ADS8413 (s)
14-Bit Pseudo-Diff ADS7890 (s) ADS7891
12-Bit Pseudo-Diff ADS7886 ADS7883 ADS7881
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.
Copyright © 2006, 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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