ADS1274 Status: ACTIVE

Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC

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Datasheet

Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters (Rev. C) (PDF 1497 KB) 16205 views
17 Oct 2008

	ADS1174	ADS1178	ADS1271	ADS1274	ADS1278
Resolution(Bits)	16	16	24	24	24
Sample Rate (max)	52kSPS	52kSPS	105kSPS	128kSPS	128kSPS
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	135	245	92	275	530
SNR(dB)			109	111	111
SNR(Typ)(dB)	97	97
SFDR(dB)	+106	+106	108	109	109
DNL(Max)(+/-LSB)	1	1	1	1	1
INL(Max)(+/-LSB)	0.0045%	0.0045%	0.0006%	0.0003%	0.0003%
No Missing Codes(Bits)	16	16	24	24	24
No. of Supplies	2	2	2	3	3
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	1.65	1.65	1.65	1.65	1.65
Logic Voltage DV/DD(Max)(V)	1.95	1.95	3.6	3.6	3.6
Input Configuration Range	Vref	Vref	1.06Vref	Vref	Vref
Reference Mode	Ext	Ext	Ext	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog	Catalog
Pin/Package	64HTQFP	64HTQFP	16TSSOP	64HTQFP	64HTQFP
# Input Channels	4	8	1	4	8
	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1278: Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC
ADS1672: High Speed High Resolution 625kSPS 24 bit Delta Sigma ADC
ADS1271: 24-Bit, 105kSPS Industrial Delta-Sigma ADC
TLK2701: 1.6 to 2.7 GBPS Transceiver
TPS40200: Wide Input Non-Synchronous Buck DC/DC Controller
TUSB3410: RS232/IrDA Serial-to-USB Converter

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Product Information

Features

Simultaneously Measure Four/Eight Channels
Up to 128kSPS Data Rate
AC Performance:
62kHz Bandwidth
111dB SNR (High-Resolution Mode)
–108dB THD
DC Accuracy:
0.8µV/°C Offset Drift
1.3ppm/°C Gain Drift
Selectable Operating Modes:
High-Speed: 128kSPS, 106dB SNR
High-Resolution: 52kSPS, 111dB SNR
Low-Power: 52kSPS, 31mW/ch
Low-Speed: 10kSPS, 7mW/ch
Linear Phase Digital Filter
SPI or Frame-Sync Serial Interface
Low Sampling Aperture Error
Modulator Output Option (digital filter bypass)
Analog Supply: 5V
Digital Core: 1.8V
I/O Supply: 1.8V to 3.3V
APPLICATIONS
- Vibration/Modal Analysis
- Multi-Channel Data Acquisition
- Acoustics/Dynamic Strain Gauges
- Pressure Sensors

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

Description

Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma () analog-to-digital converters (ADCs) with data rates up to 128k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

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 specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

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. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD package.

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	Samples
ADS1274IPAPR	ACTIVE	-40 to 125	13.95 \| 1ku	HTQFP (PAP) \| 64	View	1000 \| LARGE T&R	Purchase Samples
ADS1274IPAPRG4	ACTIVE	-40 to 125	13.95 \| 1ku	HTQFP (PAP) \| 64	View	1000 \| LARGE T&R	Purchase Samples
ADS1274IPAPT	ACTIVE	-40 to 125	14.95 \| 1ku	HTQFP (PAP) \| 64	View	250 \| SMALL T&R
ADS1274IPAPTG4	ACTIVE	-40 to 125	14.95 \| 1ku	HTQFP (PAP) \| 64	View	250 \| SMALL T&R

* 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
ADS1274IPAPR	As of 12:12 PM GMT, 03 Jul 2009	As of 12:12 PM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	Available
	6 Weeks	Asia	WPI	588
ADS1274IPAPRG4	As of 12:12 PM GMT, 03 Jul 2009	As of 12:12 PM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	Available
ADS1274IPAPT	As of 12:12 PM GMT, 03 Jul 2009	As of 12:12 PM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	354
			Mouser Electronics	277
			Newark	240
		Asia	WPI	31
		Europe	Avnet-SILICA	30
			Compel	185
			Farnell	45
ADS1274IPAPTG4	As of 12:12 PM GMT, 03 Jul 2009	As of 12:12 PM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	Available
	6 Weeks	Europe	Spoerle	250
View all Distributors

** 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
ADS1274IPAPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS1274IPAPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS1274IPAPT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS1274IPAPTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	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

Most useful technical documents for ADS1274

Datasheet

Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters (Rev. C) (PDF 1497 KB) 16205 views
17 Oct 2008

Application Notes

Thermal and Electrical Properties of Selected Packaging Materials (HTM 8 KB) 12840 views
04 Oct 2000 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM 8 KB) 25031 views
24 May 2004 Read Abstract
A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. A) (HTM 8 KB) 15899 views
12 Jan 2008 Read Abstract
Interleaving Analog-to-Digital Converters (HTM 8 KB) 6655 views
02 Oct 2000 Read Abstract
Analog-to-Digital Converter Grounding Practices Affect System Performance (HTM 8 KB) 12509 views
02 Oct 2000 Read Abstract
Principles of Data Acquisition and Conversion (HTM 8 KB) 13659 views
02 Oct 2000 Read Abstract
High Speed Data Conversion (HTM 8 KB) 19349 views
02 Oct 2000 Read Abstract
What Designers Should Know About Data Converter Drift (HTM 8 KB) 8643 views
02 Oct 2000 Read Abstract

View Application Notes 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
ADS1274 Evaluation Module (EVM)	ADS1274EVM	Texas Instruments	Development Boards/EVMs
ADS1274 Performance Demonstration Kit (PDK)	ADS1274EVM-PDK	Texas Instruments	Development Boards/EVMs
ADCPro(TM) Analog-to-Digital Converter Evaluation Software	ADCPRO	Texas Instruments	Application Software

Part #	Name	Product Family	Comments
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 equivalent deivce
ADS1258	24 Bit, Fast Channel Cycling Delta-Sigma ADC		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 16 channel device, with slightly lower AC performance
ADS1271	24-Bit, 105kSPS Industrial Delta-Sigma ADC		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Single Channel equivalent deivce
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 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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