ADS7881 Status: ACTIVE

2.7V-5.25V Digital, 5V Analog, 12 Bit, 4MSPS, Parallel ADC with Ref

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Datasheet

12 Bit 4 MSPS Low Power SAR Analog to Digital Converter (Rev. B) (ads7881.pdf, 887 KB)
11 Nov 2005 Download

	ADS7881
Resolution(Bits)	12
Sample Rate (max)	4MSPS
Architecture	SAR
Power Consumption(Typ)(mW)	95
SINAD(dB)	71.5
SNR(dB)	71.5
SFDR(dB)	90
DNL(Max)(+/-LSB)	1
INL(Max)(+/-LSB)	1
No Missing Codes(Bits)	12
No. of Supplies	P8/P12
Analog Voltage AV/DD(Min)(V)	4.75
Analog Voltage AV/DD(Max)(V)	5.25
Logic Voltage DV/DD(Min)(V)	2.7
Logic Voltage DV/DD(Max)(V)	5.25
Input Configuration Range	Vref
Reference Mode	Int and Ext
Rating	Catalog
Pin/Package	48TQFP,48QFN
# Input Channels	1
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1112: 16-bit 240SPS ADC, 2 Ch. Diff/3 Single-end input, Low power Complete System in MSOP-10
TLV2556: 12-Bit, 200 KSPS, 11 Channel, Low Power, Serial ADC with Internal Reference
ADS1255: 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC
DAC7612: Dual, 12-Bit Serial Input Digital-To-Analog Converter
TLV5637: 10-Bit, 1 us DAC Serial Input, Dual DAC, Pgrmable Int. Ref., Settling Time
TMS320LF2407A: 16-bit fixed point DSP with Flash

More Related Products

Product Information

Features

4 MHz Sample Rate, 12-Bit Resolution
Zero Latency
Unipolar, Pseudo Differential Input, Range:
- 0 V to 2.5 V
High Speed Parallel Interface
71 dB SNR and –88.5 dB THD at 1 MHz I/P
Power Dissipation 95 mW at 4 MSPS
Nap Mode (10 mW Power Dissipation)
Power Down (10 µW)
Internal Reference
Internal Reference Buffer
48-Pin TQFP Package
APPLICATIONS
- Optical Networking (DWDM, MEMS Based Switching)
- Spectrum Analyzers
- High Speed Data Acquisition Systems
- High Speed Close-Loop Systems
- Telecommunication
- Ultra-Sound Detection

Description

The ADS7881 is a 12-bit 4-MSPS A-to-D converter with 2.5-V internal reference. The device includes a capacitor based SAR A/D converter with inherent sample and hold. The device offers a 12-bit parallel interface with an additional byte mode that provides easy interface with 8-bit processors. The device has a pseudo-differential input stage.

The –IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensor and also to cancel common-mode noise. With nap mode enabled, the device operates at lower power when used at lower conversion rates. The device is available in a 48-pin TQFP 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	Footprints	Samples
ADS7881IPFBR	ACTIVE	-40 to 85	7.35 \| 1ku	TQFP (PFB) \| 48	View	1000 \| LARGE T&R	Purchase Samples
ADS7881IPFBRG4	ACTIVE	-40 to 85	7.35 \| 1ku	TQFP (PFB) \| 48	View	1000 \| LARGE T&R	Purchase Samples
ADS7881IPFBT	ACTIVE	-40 to 85	8.10 \| 1ku	TQFP (PFB) \| 48	View	250 \| SMALL T&R
ADS7881IPFBTG4	ACTIVE	-40 to 85	8.10 \| 1ku	TQFP (PFB) \| 48	View	250 \| SMALL T&R
ADS7881IRGZR	ACTIVE	-40 to 85	7.35 \| 1ku	QFN (RGZ) \| 48	View	2500 \| LARGE T&R		Purchase Samples
ADS7881IRGZRG4	ACTIVE	-40 to 85	7.35 \| 1ku	QFN (RGZ) \| 48	View	2500 \| LARGE T&R		Purchase Samples
ADS7881IRGZT	ACTIVE	-40 to 85	8.10 \| 1ku	QFN (RGZ) \| 48	View	250 \| SMALL T&R
ADS7881IRGZTG4	ACTIVE	-40 to 85	8.10 \| 1ku	QFN (RGZ) \| 48	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
ADS7881IPFBR	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 5 Jan	6 Weeks	None Reported View Distributors
ADS7881IPFBRG4	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	>10k*	>10k \| 5 Jan	6 Weeks	None Reported View Distributors
ADS7881IPFBT	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	500*	>10k \| 5 Jan	6 Weeks	Americas	DigiKey	215
					Newark	222
					Rochester Electronics	430
				Asia	WPI	244
ADS7881IPFBTG4	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	500*	>10k \| 5 Jan	6 Weeks	None Reported View Distributors
ADS7881IRGZR	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	9514 \| 5 Jan	8 Weeks	None Reported View Distributors
	0*	>10k \| 9 Mar	8 Weeks
ADS7881IRGZRG4	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	9514 \| 5 Jan	8 Weeks	None Reported View Distributors
	0*	>10k \| 9 Mar	8 Weeks
ADS7881IRGZT	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	2750*		1 Weeks	Americas	DigiKey	223
	2750*		1 Weeks	Americas	Mouser Electronics	250
ADS7881IRGZTG4	As of 10:17 AM GMT, 19 Nov 2008			As of 10:17 AM GMT, 19 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	2750*		1 Weeks	None Reported View Distributors
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
ADS7881IPFBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IPFBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IPFBT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IPFBTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IRGZR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IRGZRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IRGZT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7881IRGZTG4	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

12 Bit 4 MSPS Low Power SAR Analog to Digital Converter (Rev. B) (ads7881.pdf, 887 KB)
11 Nov 2005 Download

Application Notes

A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. A) (sbaa147a.htm, 8 KB)
12 Jan 2008 Abstract
Interfacing the ADS7881 to TMS320C6713 DSP (slaa257.htm, 8 KB)
30 Jun 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

View Application Notes for Analog to Digital Converters

User Guides

ADS7881EVM/ADS7891EVM User's Guide (slau150.htm, 8 KB)
15 Dec 2004 Abstract

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
ADS7881EVM Evaluation Module	ADS7881EVM	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 ADS7881
Part #	Name	Comments
ADS7891	2.7V-5.25V Digital, 5V Analog, 14 bit, 3 MSPS, Parallel ADC W/Ref	The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent. 14 bit equivalent device at 3MSPS
ADS8401	16 Bit 1.25MSPS Parallel ADC W Ref	The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent. 16 bit equivalent device at 1.25MSPS
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