ADS8471 Datasheet, PDF (1/31 Pages) Burr-Brown (TI) – 16-BIT, 1-MSPS, PSEUDO-BIPOLAR, UNIPOLAR INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE

BurrĆBrown Products
from Texas Instruments
ADS8471
SLAS517 – DECEMBER 2007
16-BIT, 1-MSPS, PSEUDO-BIPOLAR, UNIPOLAR INPUT, MICROPOWER SAMPLING
ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
FEATURES
1
• 48-Pin 7x7 QFN Package
• 0 to 1 MSPS Sampling Rate
• ±0.7 LSB Typ, ±1 LSB Max INL
• ±0.4 LSB Typ, ±0.75 LSB Max DNL
• 16-Bit NMC Ensured Over Temperature
• ±0.1 mV Offset Error
• ±0.15 ppm/°C Offset Error Drift
• ±0.015 %FSR Gain Error
APPLICATIONS
• Medical Instruments
• Optical Networking
• Transducer Interface
• High Accuracy Data Acquisition Systems
• Magnetometers
• ±0.7 ppm/°C Gain Error Drift
DESCRIPTION
• 93 dB SNR, -110dB THD, 112dB SFDR
• Zero Latency
• Low Power: 220 mW at 1 MSPS
• Unipolar Input Range: 0 V to V_ref
• Onboard Reference
• Onboard Reference Buffer
The ADS8471 is an 16-bit, 1-MSPS A/D converter
with an internal 4.096-V reference and a
pseudo-bipolar, unipolar input. The device includes a
16-bit capacitor-based SAR A/D converter with
inherent sample and hold. The ADS8471 offers a full
16-bit interface or an 8-bit bus option using two read
cycles.
• High-Speed Parallel Interface
• Wide Digital Supply 2.7 V ~ 5.25 V
• 8-/16-Bit Bus Transfer
The ADS8471 is available in a 48-lead 7x7 QFN
package and is characterized over the industrial
–40°C to 85°C temperature range.
HIGH-SPEED SAR CONVERTER FAMILY⁽¹⁾
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
500 kHz
ADS8383
ADS8327 (S)
ADS8328 (S)
580 kHz
ADS8381
ADS8380 (S)
ADS8382 (S)
ADS8370 (S)
ADS8372 (S)
750 kHz
1 MHz
1.25 MHz
2 MHz
ADS8371
ADS8482
ADS8471
ADS8329/30 (S)
ADS8472
ADS7886
ADS8484
ADS8401
ADS8405
ADS8402
ADS8406
ADS7890 (S)
ADS8411
ADS8410 (S)
ADS8412
ADS8413 (S)
3 MHz
ADS7891
4MHz
ADS8422
ADS7881
(1) S: Serial
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
CONVST
BUSY
CS
RD
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.
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 © 2007, Texas Instruments Incorporated