Burr Brown Products
from Texas Instruments
SLAS386A – JULY 2005 – REVISED JUNE 2006
18-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER
SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE,
REFERENCE
FEATURES
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APPLICATIONS
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Medical Instruments
0 to 1-MHz Sample Rate
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Optical Networking
±1.2
LSB Typ,
±2.5
LSB Max INL
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Transducer Interface
+0.75/-0.6 LSB Typ, +1.5/-1 LSB Max DNL
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High Accuracy Data Acquisition Systems
18-Bit NMC Ensured Over Temperature
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Magnetometers
±0.05-mV
Offset Error
±0.05-PPM/°C
Offset Error Drift
DESCRIPTION
±0.035
%FSR Gain Error
The ADS8482 is an 18-bit, 1-MSPS A/C converter
±0.5-PPM/°C
Gain Error Drift
with an internal 4.096-V reference and a
99dB SNR, -121dB THD, 123dB SFDR
pseudo-bipolar, fully differential input. The device
includes a 18-bit capacitor-based SAR A/D converter
Zero Latency
with inherent sample and hold. The ADS8482 offers
Low Power: 225 mW at 1 MSPS
a full 18-bit interface, a 16-bit option where data is
Unipolar Differential Input Range: V
ref
to –Vref
read using two read cycles, or an 8-bit bus option
using three read cycles.
Onboard Reference with 6 PPM/°C Drift
Onboard Reference Buffer
The ADS8482 is available in a 48-lead 7x7 QFN
package and is characterized over the industrial
High-Speed Parallel Interface
–40°C to 85°C temperature range.
Wide Digital Supply 2.7 V to 5.25 V
8-/16-/18-Bit Bus Transfer
48-Pin 7x7 QFN Package
HIGH SPEED SAR CONVERTER FAMILY
TYPE/SPEED
500 kHz
ADS8383
~600 kHz
ADS8381
ADS8380 (s)
750 kHz
1 MHz
ADS8481
1.25 MHz
2 MHz
3 MHz
4MHz
18-Bit Pseudo-Diff
18-Bit Pseudo-Bipolar, Fully Diff
ADS8327
16-Bit Pseudo-Diff
ADS8328
16-Bit Pseudo-Bipolar, Fully Diff
ADS8406
14-Bit Pseudo-Diff
12-Bit Pseudo-Diff
ADS7886
ADS7890 (s)
ADS7883
ADS8413 (s)
ADS7891
ADS7881
ADS8372 (s)
ADS8472
ADS8405
ADS8402
ADS8410 (s)
ADS8412
ADS8422
ADS8382 (s)
ADS8370 (s)
ADS8371
ADS8482
ADS8471
ADS8401
ADS8411
SAR
+IN
−IN
REFIN
4.096-V
Internal
Reference
+
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CDAC
Comparator
Output
Latches
and
3-State
Drivers
BYTE
16-/8-Bit
Parallel DA TA
Output Bus
BUS 18/16
CONVST
BUSY
CS
RD
REFOUT
Clock
Conversion
and
Control Logic
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 © 2005–2006, Texas Instruments Incorporated
BURR-BROWN [ BURR-BROWN CORPORATION ]
