TI1 ADS1283IRHFT High-resolution, analog-to-digital converter Datasheet

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ADS1283
SBAS754 – DECEMBER 2017
ADS1283 High-Resolution, Analog-to-Digital Converter
1 Features
3 Description
•
The ADS1283 is an extremely high-performance,
single-chip, analog-to-digital converter (ADC) with an
integrated, low-noise programmable gain amplifier
(PGA) and two-channel input multiplexer (mux). The
ADS1283 is suitable for the demanding needs of
seismic monitoring equipment.
1
•
•
•
•
•
•
•
•
•
•
High Resolution:
– SNR: 130 dB (250 SPS, PGA = 1)
High Accuracy:
– THD: –122 dB
Low Power Consumption:
– 18 mW (PGA = 1, 2, 4, or 8)
– Shutdown Mode: 10 μW
Low-Noise PGA: 5 nV/√Hz
Two-Channel Input Multiplexer
Inherently-Stable Modulator With Fast Responding
Overrange Detector
Flexible Digital Filter:
– Sinc + FIR + IIR (Selectable)
– Linear or Minimum Phase Response
– Programmable High-Pass Filter
– Selectable FIR Data Rates:
250 SPS to 4 kSPS
Offset and Gain Calibration Engine
SYNC Input
Analog Supply: 5 V or ±2.5 V
Digital Supply: 1.8 V to 3.3 V
Energy Exploration
Seismic Monitoring
High-Accuracy Instrumentation
Mux
Input 1
Input 2
PGA
VREFN VREFP
4th-Order
û
Modulator
PART NUMBER
Calibration
Serial
Interface
CLK
ADS1283A
CS
ADS1283B
Control
Control
DOUT
DRDY
SYNC
PWDN
AVSS
DGND
BODY SIZE (NOM)
VQFN (24)
5.00 mm × 4.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Device Comparison
RESET
ADS1283
PACKAGE
SCLK
DIN
VCOM
Overrange
The synchronization input (SYNC) can be used to
synchronize the conversions of multiple ADS1283
devices.
ADS1283
DVDD
Programmable
Digital
Filter
The digital filter provides selectable data rates from
250 to 4000 samples per second (SPS). The highpass filter (HPF) features an adjustable corner
frequency. On-chip gain and offset scaling registers
support system calibration.
Device Information(1)
Simplified Schematic
AVDD
The flexible input mux provides an additional external
input for measurement, as well as internal self-test
input connections. The PGA features outstanding low
noise (5 nV/√Hz) and very-high input impedance,
allowing easy interfacing to geophones and
hydrophones over a wide range of gains.
The ADS1283 is available in a compact 24-lead, 5mm × 4-mm VQFN package, and is fully specified
from –40°C to +85°C, with a maximum operating
temperature range of –50°C to +125°C.
2 Applications
•
•
•
The converter uses a fourth-order, inherently stable,
delta-sigma (ΔΣ) modulator that provides outstanding
noise and linearity performance. The modulator digital
output is digitally filtered and decimated by the onchip digital filter to yield the ADC conversion result.
PART NUMBER
OFFSET OPTION
THD (TYP)
GAIN
ADS1283
100 mV
–122 dB
1 to 64
ADS1283A
100 mV
–118 dB
1, 4, 16
ADS1283B
75 mV, 100 mV
–122 dB
1 to 64
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
ADS1283
SBAS754 – DECEMBER 2017
www.ti.com
4 Device and Documentation Support
4.1 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
4.2 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
4.3 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
4.4 Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
4.5 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
5 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
2
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Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: ADS1283
PACKAGE OPTION ADDENDUM
www.ti.com
7-Jan-2018
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
ADS1283AIRHFR
ACTIVE
VQFN
RHF
24
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
ADS
1283A
ADS1283AIRHFT
ACTIVE
VQFN
RHF
24
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
ADS
1283A
ADS1283BIRHFR
ACTIVE
VQFN
RHF
24
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
-40 to 85
ADS
1283B
ADS1283BIRHFT
ACTIVE
VQFN
RHF
24
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
-40 to 85
ADS
1283B
ADS1283IRHFR
ACTIVE
VQFN
RHF
24
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
ADS
1283
ADS1283IRHFT
ACTIVE
VQFN
RHF
24
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
ADS
1283
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
7-Jan-2018
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
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provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
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