ADS1271 Status: ACTIVE

24-Bit, 105kSPS Industrial Delta-Sigma ADC

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Datasheet

24-Bit, Wide Bandwidth Analog-to-Digital Converter (Rev. F) (ads1271.pdf, 588 KB)
23 Oct 2007 Download

	ADS1271	ADS1274	ADS1278	ADS1672
Resolution(Bits)	24	24	24	24
Sample Rate (max)	105kSPS	128kSPS	128kSPS	625
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta Sigma
Power Consumption(Typ)(mW)	92	275	530	350
SINAD(dB)				105
SNR(dB)	109	111	111	105
SNR(Typ)(dB)				105
SFDR(dB)	-108	-109	-109	115
DNL(Max)(+/-LSB)	1	1	1	1
INL(Max)(+/-LSB)	0.0006%	0.0003%	0.0003%	2
No Missing Codes(Bits)	24	24	24	24
ENOB(Bits)				19.2
No. of Supplies	2	3	3	2
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	1.65	1.65	1.65	2.7
Logic Voltage DV/DD(Max)(V)	3.6	3.6	3.6	3.3
Input Configuration Range	1.06Vref	Vref	Vref	+/-Vref
Reference Mode	Ext	Ext	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog
Pin/Package	16TSSOP	64HTQFP	64HTQFP	64TQFP
# Input Channels	1	4	8	1
	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1258: 24 Bit, Fast Channel Cycling Delta-Sigma ADC
ADS8505: 16-Bit 250kHz CMOS Analog-to-Digital Converter w/Parallel Interface 2.5V Internal Reference
ADS8370: 16-Bit 600KSPS Serial ADC with Ref and Unipolar Pseudo Diff Input
MSP430F449: 16-Bit Ultra-Low-Power MCU, 60kB Flash, 2048B RAM, 12-Bit ADC, 2 USARTs HW Multiplier, 160 Seg LCD
DAC8831: 16-Bit, Ultra-Low Power, Voltage Output Digital to Analog Converter
MSP430F1611: 16-bit Ultra-Low-Power MCU, 48kB Flash, 10240B RAM, 12-Bit ADC, Dual DAC, 2 USART, I2C, HW Mult, DMA

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Product Information

Features

105kSPS Data Rate
AC Performance:
51kHz Bandwidth
109dB SNR (High-Resolution Mode)
–108dB THD
DC Accuracy:
1.8µV/°C Offset Drift
2ppm/°C Gain Drift
Selectable Operating Modes:
High-Speed: 105kSPS Data Rate
High-Resolution: 109dB SNR
Low-Power: 35mW Dissipation
Power-Down Control
Digital Filter:
Linear Phase Response
Passband Ripple: ±0.005dB
Stop Band Attenuation: 100dB
Internal Offset Calibration On Command
Selectable SPI&™ or Frame Sync Serial Interface
Designed for Multichannel Systems:
Daisy-Chainable Serial Interface
Easy Synchronization
Simple Pin-Driven Control
Modulator Output Option
Specified from –40°C to +105°C
Analog Supply: 5V
Digital Supply: 1.8V to 3.3V
APPLICATIONS
- Vibration/Modal Analysis
- Acoustics
- Dynamic Strain Gauges
- Pressure Sensors
- Test and Measurement

SPI is a trademark of Motorola Inc. All other trademarks are the property of their respective owners.

Description

The ADS1271 is a 24-bit, delta-sigma analog-to-digital converter (ADC) with a data rate up to 105kSPS. It offers a unique combination of excellent DC accuracy and outstanding AC performance. The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. The ADS1271 provides a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for DC measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specification are significantly weaker than their industrial counterparts. The ADS1271 combines these converters, allowing high-precision industrial measurement with excellent DC and AC specifications ensured over an extended industrial temperature range.

Three operating modes allow for optimization of speed, resolution, and power. A selectable SPI or a frame-sync serial interface provides for convenient interfacing to microcontrollers or DSPs. The output from the modulator is accessible for external digital filter applications. All operations, including internal offset calibration, are controlled directly by pins; there are no registers to program.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
ADS1271IBPW	ACTIVE		10.60 \| 100u	TSSOP (PW) \| 16	View	90 \| TUBE
ADS1271IBPWG4	ACTIVE		10.60 \| 100u	TSSOP (PW) \| 16	View	90 \| TUBE
ADS1271IBPWR	ACTIVE		10.60 \| 100u	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Purchase Samples
ADS1271IBPWRG4	ACTIVE		10.60 \| 100u	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Purchase Samples
ADS1271IPW	ACTIVE	-40 to 125	7.90 \| 100u	TSSOP (PW) \| 16	View	90 \| TUBE
ADS1271IPWG4	ACTIVE	-40 to 125	7.90 \| 100u	TSSOP (PW) \| 16	View	90 \| TUBE
ADS1271IPWR	ACTIVE	-40 to 125	7.90 \| 100u	TSSOP (PW) \| 16	View	2500 \| LARGE T&R	Purchase Samples
ADS1271IPWRG4	ACTIVE	-40 to 125	7.90 \| 100u	TSSOP (PW) \| 16	View	2500 \| 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
ADS1271IBPW	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 5 Dec	8 Weeks	Americas	Arrow	7
					Avnet	171
					Newark	31
				Asia	WPI	114
ADS1271IBPWG4	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 5 Dec	8 Weeks	None Reported View Distributors
ADS1271IBPWR	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 5 Dec	4 Weeks	None Reported View Distributors
ADS1271IBPWRG4	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 5 Dec	4 Weeks	None Reported View Distributors
ADS1271IPW	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 8 Dec	8 Weeks	Americas	Arrow	97
					Avnet	50
					Mouser Electronics	>1k
				Asia	WPI	208
				Europe	Avnet-SILICA	30
				Europe	Farnell	310
ADS1271IPWG4	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 8 Dec	8 Weeks	Europe	EBV Elektronik	540
	0*		8 Weeks	Europe	Farnell	383
ADS1271IPWR	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	7990*	>10k \| 8 Dec	4 Weeks	Americas	Arrow	>1k
ADS1271IPWRG4	As of 9:22 AM GMT, 15 Oct 2008			As of 9:22 AM GMT, 15 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	7990*	>10k \| 8 Dec	4 Weeks	Europe	EBV Elektronik	>1k
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
ADS1271IBPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IBPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IBPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IBPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1271IPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	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

24-Bit, Wide Bandwidth Analog-to-Digital Converter (Rev. F) (ads1271.pdf, 588 KB)
23 Oct 2007 Download

Application Notes

A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. A) (sbaa147a.htm, 8 KB)
12 Jan 2008 Abstract
Synchronizing the ADS1271 (sbas355.htm, 8 KB)
27 Oct 2005 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
Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (sbaa006.htm, 8 KB)
27 Sep 2000 Abstract
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (sbaa005.htm, 8 KB)
27 Sep 2000 Abstract

View Application Notes for Analog to Digital Converters

User Guides

ADS1271EVM User's Guide (Rev. B) (sbau107b.pdf, 409 KB)
29 Feb 2008 Download

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
ADS1271 Evaluation Module (EVM)	ADS1271EVM	Texas Instruments	Development Boards/EVMs
ADS1271 Performance Demonstration Kit (PDK)	ADS1271EVM-PDK	Texas Instruments	Development Boards/EVMs
DCPFREETOOL Software Plug-In to Code Composer Studio	DCPFREETOOL	Texas Instruments	Utilities/Plug-Ins
Data Converter Plug-in for Code Composer Studio (Rev. D)(slac087d.zip, 5199 KB ) 05 May 2008 zip

Alternative Products - Are similar to ADS1271
Part #	Name	Comments
ADS1274	Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC	4 channel version of ADS1271
ADS1278	Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC	8 channel version of ADS1271
ADS1255	24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.
ADS1281	High Resolution 24-Bit Analog-to Digital Converter	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Higher resolution device
ADS1282	Ultra High Resolution Delta Sigma ADC with PGA for Seismic and Energy Exploration	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 4 channel higher resolution device with onboard PGA
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ADS1255	24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC	TI customers also evaluated this product.
ADS1278	Octal, 128kHz, Simultaneous Sampling 24-Bit 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.

Complementary Products - Can be used with ADS1271
Part #	Name	Product Family	Comments
OPA365	2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier	PRECISION AMPLIFIERS- LOW OFFSET VOLTAGE	OPERATIONAL AMPLIFIER
OPA333	1.8V, 17uA, 2uV, microPOWER CMOS Zero-Drift Series Operational Amplifier	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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ADS1271 Status: ACTIVE

24-Bit, 105kSPS Industrial Delta-Sigma ADC

See Also

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