ADS1282 Status: ACTIVE

Ultra High Resolution Delta Sigma ADC with PGA for Seismic and Energy Exploration

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Datasheet

High-Resolution Analog-to-Digital Converter (Rev. E) (ads1282.pdf, 1597 KB)
20 Oct 2008 Download

	ADS1281	ADS1282
Resolution(Bits)	32	32
Sample Rate (max)	4kSPS	4kSPS
Architecture	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	12	27
SNR(dB)	130	130
SNR(Typ)(dB)	130	130
SFDR(dB)	-123	-123
INL(Max)(+/-LSB)	0.00006%	0.00006%
No Missing Codes(Bits)	31	31
No. of Supplies	2	2
Analog Voltage AV/DD(Min)(V)	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25
Logic Voltage DV/DD(Min)(V)	1.65	1.65
Logic Voltage DV/DD(Max)(V)	3.6	3.6
Input Configuration Range	0.5Vref	0.5Vref/PGA
Reference Mode	Ext	Ext
Rating	Catalog	Catalog
Pin/Package	24TSSOP	28TSSOP
# Input Channels	1	2
	Samples	Samples
	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1281: High Resolution 24-Bit Analog-to Digital Converter
ADS1278: Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC
ADS1255: 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC

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Product Information

Features

High Resolution:
130dB SNR (250SPS, High-Resolution Mode)
127dB SNR (250SPS, Low-Power Mode)
High Accuracy:
THD: -122dB
INL: 0.5ppm
Low-Noise PGA
Two-Channel Input MUX
Inherently-Stable Modulator with Fast Responding Over-Range Detection
Flexible Digital Filter:
Sinc + FIR + IIR (Selectable)
Linear or Minimum Phase Response
Programmable High-Pass Filter
Selectable FIR Data Rates: 250SPS to 4kSPS
Filter Bypass Option
Low Power Consumption:
High-Resolution Mode: 25mW
Low-Power Mode: 17mW
Shutdown: 10µW
Offset and Gain Calibration Engine
SYNC Input
Analog Supply:
Unipolar (+5V) or Bipolar (±2.5V)
Digital Supply: 1.8V to 3.3V
APPLICATIONS
- Energy Exploration
- Seismic Monitoring
- High-Accuracy Instrumentation

All other trademarks are the property of their respective owners

Description

The ADS1282 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 ADS1282 is suitable for the demanding needs of energy exploration and seismic monitoring environments.

The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise and linearity performance. The modulator is used either in conjunction with the on-chip digital filter, or can be bypassed for use with post processing filters.

The flexible input MUX provides an additional external input for measurement, as well as internal self-test connections. The PGA features outstanding low noise (5nV/ΣHz) and high input impedance, allowing easy interfacing to geophones and hydrophones over a wide range of gains.

The digital filter provides selectable data rates from 250 to 4000 samples per second (SPS). The high-pass filter (HPF) features an adjustable corner frequency. On-chip gain and offset scaling registers support system calibration.

The synchronization input (SYNC) can be used to synchronize the conversions of multiple ADS1282s. The SYNC input also accepts a clock input for continuous alignment of conversions from an external source.

Two operating modes allow optimization of noise and power. Together, the amplifier, modulator, and filter dissipate 25mW and only 17mW in low-power mode. The ADS1282 is available in a compact TSSOP-28 package and is fully specified from -40°C to +85°C, with a maximum operating range to +125°C.

Pricing / Packaging / CAD Design Tools / Samples

		Price	Packaging			Samples
Device	Status	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Samples
ADS1282IPW	ACTIVE	44.35 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE
ADS1282IPWG4	ACTIVE	44.35 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE
ADS1282IPWR	ACTIVE	36.95 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R	Purchase Samples
ADS1282IPWRG4	ACTIVE	36.95 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status			Reported Distributor Inventory
ADS1282IPW	As of 10:18 AM GMT, 19 Nov 2008			As of 10:18 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	5260 \| 19 Dec	6 Weeks	Americas	DigiKey	852
	0*	7428 \| 26 Dec	6 Weeks	Americas	Mouser Electronics	11
ADS1282IPWG4	As of 10:18 AM GMT, 19 Nov 2008			As of 10:18 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	5260 \| 19 Dec	6 Weeks	None Reported View Distributors
	0*	7428 \| 26 Dec	6 Weeks
ADS1282IPWR	As of 10:18 AM GMT, 19 Nov 2008			As of 10:18 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	5260 \| 19 Dec	6 Weeks	None Reported View Distributors
	0*	7428 \| 26 Dec	6 Weeks
ADS1282IPWRG4	As of 10:18 AM GMT, 19 Nov 2008			As of 10:18 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	5260 \| 19 Dec	6 Weeks	None Reported View Distributors
	0*	7428 \| 26 Dec	6 Weeks
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
ADS1282IPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
ADS1282IPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
ADS1282IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
ADS1282IPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

High-Resolution Analog-to-Digital Converter (Rev. E) (ads1282.pdf, 1597 KB)
20 Oct 2008 Download

Application Notes

A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. A) (sbaa147a.htm, 8 KB)
12 Jan 2008 Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (szza046.htm, 8 KB)
24 May 2004 Abstract
Thermal and Electrical Properties of Selected Packaging Materials (sbfa010.htm, 8 KB)
04 Oct 2000 Abstract
Analog-to-Digital Converter Grounding Practices Affect System Performance (sbaa052.htm, 8 KB)
02 Oct 2000 Abstract
Principles of Data Acquisition and Conversion (sbaa051.htm, 8 KB)
02 Oct 2000 Abstract
Interleaving Analog-to-Digital Converters (sbaa049.htm, 8 KB)
02 Oct 2000 Abstract
What Designers Should Know About Data Converter Drift (sbaa046.htm, 8 KB)
02 Oct 2000 Abstract
High Speed Data Conversion (sbaa045.htm, 8 KB)
02 Oct 2000 Abstract

View Application Notes for Analog to Digital Converters

User Guides

View User Guides for Analog to Digital Converters

More Literature

View More Literature for Analog to Digital Converters

Tools & Software

Name	Part #	Company	Tool / Software Type
Anti-Aliasing Calculation Tool for A to D Converters	ANTIALIASINGCALC	Texas Instruments	Calculation Utilities
Op Amp to ADC Circuit Topology Calculator	ADC-INPUT-CALC	Texas Instruments	Calculation Utilities

Alternative Products - Are similar to ADS1282
Part #	Name	Comments
ADS1281	High Resolution 24-Bit Analog-to Digital Converter	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Single channel version of ADS1282. No onboard PGA
ADS1274	Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Has a lower sampling rate
ADS1271	24-Bit, 105kSPS Industrial Delta-Sigma ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Single channel device. Lower sampling rate
ADS1278	Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 8 channel device. Lower sampling rate
Customers Who Evaluated This Product Also Evaluated...
ADS1281	High Resolution 24-Bit Analog-to Digital Converter	TI customers also evaluated this product.
ADS1278	Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC	TI customers also evaluated this product.
ADS1255	24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC	TI customers also evaluated this product.
ADS1274	Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC	TI customers also evaluated this product.
ADS1258	24 Bit, Fast Channel Cycling Delta-Sigma ADC	TI customers also evaluated this product.
ADS1256	24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC with Multiplexer	TI customers also evaluated this product.
ADS1271	24-Bit, 105kSPS Industrial Delta-Sigma ADC	TI customers also evaluated this product.
ADS1672	High Speed High Resolution 625kSPS 24 bit Delta Sigma ADC	TI customers also evaluated this product.

Complementary Products - Can be used with ADS1282
Part #	Name	Product Family	Comments
OPA227	High Precision, Low Noise Operational Amplifiers	PRECISION AMPLIFIERS- LOW OFFSET VOLTAGE	OPERATIONAL AMPLIFIER
REF5025	Low Noise, Very Low Drift, Precision Voltage Reference	REFERENCES- SERIES VOLTAGE REFERENCES	SERIES VOLTAGE REFERENCE

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Seismic

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