ADS808 Status: ACTIVE

12-Bit, 70 MSPS ADC SE/Diff, Int/Ext Ref., Flexible Clocking, Selectable Fullscale Range & Powerdown

Burr-Brown

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Datasheet

ADS808: 12-Bit, 70MHz Sampling Analog-to-Digital Converter (Rev. C) (ads808.pdf, 825 KB)
04 Sep 2002 Download

	ADS808
Resolution(Bits)	12
Sample Rate (max)	70MSPS
Architecture	Pipeline
Power Consumption(Typ)(mW)	720
SINAD(dB)	64
SNR(dB)	64
SFDR(dB)	68
DNL(Max)(+/-LSB)	1.7
INL(Max)(+/-LSB)	4
No Missing Codes(Bits)	12
ENOB(Bits)	0.7
No. of Supplies	2
Analog Voltage AV/DD(Min)(V)	4.75
Analog Voltage AV/DD(Max)(V)	5.25
Logic Voltage DV/DD(Min)(V)	3
Logic Voltage DV/DD(Max)(V)	5
Input Configuration Range	1V / 2V (p-p)
Reference Mode	Int and Ext
Rating	Catalog
Pin/Package	48HTQFP
Comments	+1.7/-1.0
# Input Channels	1
	Samples
	Inventory

Product Information

Features

DYNAMIC RANGE:
SNR: 64dB at 10MHz f_IN
SFDR: 68dB at 10MHz f_IN
PREMIUM TRACK-AND-HOLD:
   Low Jitter: 0.25ps rms
   Differential or Single-Ended Inputs
   Selectable Full-Scale Input Range
FLEXIBLE CLOCKING:
   Differential or Single-Ended
   Accepts Sine or Square Wave Clocking
   Down to 0.5Vp-p
   Variable Threshold Level
APPLICATIONS
- BASESTATION WIDEBAND RADIOS:
  CDMA, GSM, TDMA, 3G, AMPS, and NMT
- TEST INSTRUMENTATION
- CCD IMAGING

PowerPAD is a registered trademark of Texas Instruments.

Description

The ADS808 is a high-dynamic range, 12-bit, 70MHz, pipelined Analog-to-Digital Converter (ADC). It includes a high-bandwidth linear track-and-hold that has a low jitter of only 0.25ps rms, leading to excellent SNR performance. The clock input can accept a low-level differential sine wave or square wave signal down to 0.5Vp-p, further improving the SNR performance. It also accepts a single-ended clock signal and has flexible threshold levels.

The ADS808 has a 2Vp-p differential input range (1Vp-p • 2 inputs) for optimum signal-to-noise ratio. The differential operation gives the lowest even-order harmonic components. A lower input voltage of 1.5Vp-p or 1Vp-p can also be selected using the internal references, further optimizing SFDR. Alternatively, a single-ended input range can be used by tying the IN\ input to the common-mode voltage, if desired.

The ADS808 also provides an over-range flag that indicates when the input signal has exceeded the converter’s full-scale range. This flag can also be used to reduce the gain of the front-end signal conditioning circuitry. It also employs digital error-correction techniques to provide excellent differential linearity for demanding imaging applications. The ADS808 is available in a small TQFP-48 PowerPAD™ thermally enhanced package.

Pricing / Packaging / CAD Design Tools / Samples

		Price	Packaging			CAD Design Tools		Samples
Device	Status	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
ADS808Y/250	ACTIVE	21.45 \| 1ku	HTQFP (PHP) \| 48	View	250 \| SMALL T&R
ADS808Y/250G4	ACTIVE	21.45 \| 1ku	HTQFP (PHP) \| 48	View	250 \| SMALL T&R		Contact TI Distributor or Sales Office

* 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
ADS808Y/250	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*		26 Weeks	Americas	DigiKey	224
	0*		26 Weeks	Americas	Rochester Electronics	210
ADS808Y/250G4	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*		26 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
ADS808Y/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS808Y/250G4	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

Datasheets

ADS808: 12-Bit, 70MHz Sampling Analog-to-Digital Converter (Rev. C) (ads808.pdf, 825 KB)
04 Sep 2002 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
Jitter and SNR calculator(slac133.zip, 2 KB ) 24 Apr 2007 zip

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