ADS1625 Status:ACTIVE

18 Bit, 1.25MSPS Single Channel Delta-Sigma ADC Single

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Datasheet

18-Bit, 1.25MSPS Analog-to-Digital Converter (Rev. E) (ads1625.pdf, 877 KB)
21 May 2007 Download

	ADS1601	ADS1602	ADS1605	ADS1606	ADS1610	ADS1625	ADS1626
Resolution(Bits)	16	16	16	16	16	18	18
Sample Rate (max)	1.25MSPS	2.5MSPS	5MSPS	5MSPS	10MSPS	1.25MSPS	1.25MSPS
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	330	530	560	560	960	520	520
SINAD(dB)	91	91	84	84	83	93	93
SNR(dB)	91	91	84	84	83	93	93
SFDR(dB)	120	120	102	102	109	120	120
DNL(Max)(+/-LSB)	0.25	0.25	0.25	0.25	0.5	0.5	0.5
INL(Max)(+/-LSB)	0.75	0.75	0.75	0.75	0.4	3.5	3.5
No Missing Codes(Bits)	16	16	16	16	16	18	18
No. of Supplies	2	2	2	2	2	2	2
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75	4.75	4.9	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.1	5.25	5.25
Logic Voltage DV/DD(Min)(V)	2.7	2.7	2.7	2.7	2.7	2.7	2.7
Logic Voltage DV/DD(Max)(V)	5.25	5.25	5.25	5.25	3.6	5.25	5.25
Input Configuration Range	Vref	Vref	1.467Vref	1.467Vref	Vref	1.467Vref	1.467Vref
Reference Mode	Int and Ext	Int and Ext	Int and Ext	Int and Ext	Ext	Int and Ext	Int and Ext
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Pin/Package	48TQFP	48TQFP	64HTQFP	64HTQFP	64HTQFP	64HTQFP	64HTQFP
# Input Channels	1	1	1	1	1	1	1
	Samples	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1626: 18 Bit, 1.25MSPS Single Channel Delta-Sigma ADC Single with FIFO
ADS8484: 18 Bit 1.25MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input
ADS8482: 18 Bit 1MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input
DAC8811: 16-Bit, Serial Input Multiplying Digital to Analog Converter

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Product Information

Features

Data Rate: 1.25MSPS
Signal-to-Noise Ratio: 93dB
Total Harmonic Distortion: –101dB
Spurious-Free Dynamic Range: 103dB
Linear Phase with 615kHz Bandwidth
Passband Ripple: ±0.0025dB
Adjustable FIFO Output Buffer (ADS1626 only)
Selectable On-Chip Reference
Directly Connects to TMS320C6000 DSPs
Adjustable Power Dissipation: 150 to 515mW
Power Down Mode
Supplies:
   Analog         +5V
   Digital          +3V
   Digital I/O    +2.7 to +5.25V
APPLICATIONS
- Scientific Instruments
- Automated Test Equipment
- Data Acquisition
- Medical Imaging
- Vibration Analysis

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

Description

The ADS1625 and ADS1626 are high-speed, high-precision, delta-sigma analog-to-digital converters (ADCs) with 18-bit resolution. The data rate is 1.25 mega samples per second (MSPS), the bandwidth (-3dB) is 615kHz, and passband ripple is less than ±0.0025dB (to 550kHz). Both devices offer the same outstanding performance at these speeds with a signal-to-noise ratio up to 93dB, total harmonic distortion down to -101dB, and a spurious-free dynamic range up to 103dB. The ADS1626 includes an adjustable first-in, first-out buffer (FIFO) for the output data.

The input signal is measured against a voltage reference that can be generated on-chip or supplied externally. The digital output data is provided over a simple parallel interface that easily connects to digital signal processors (DSPs). An out-of-range monitor reports when the input range has been exceeded. The ADS1625/6 operate from a +5V analog supply (AVDD) and +3V digital supply (DVDD). The digital I/O supply (IOVDD) operates from +2.7 to +5.25V, enabling the digital interface to support a range of logic families. The analog power dissipation is set by an external resistor and can be reduced when operating at slower speeds. A power-down mode, activated by a digital I/O pin, shuts down all circuitry. The ADS1625/6 are offered in a TQFP-64 package using TI PowerPAD™ technology.

The ADS1625 and ADS1626, along with their 16-bit, 5MSPS counterparts, the ADS1605 and ADS1606, are well-suited for the demanding measurement requirements of scientific instrumentation, automated test equipment, data acquisition, and medical imaging.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Samples
ADS1625IPAPR	ACTIVE	-40 to 85	20.00 \| 100u	HTQFP (PAP) \| 64	View	1000 \| LARGE T&R	Purchase Samples
ADS1625IPAPRG4	ACTIVE	-40 to 85	20.00 \| 100u	HTQFP (PAP) \| 64	View	1000 \| LARGE T&R	Purchase Samples
ADS1625IPAPT	ACTIVE	-40 to 85	22.00 \| 100u	HTQFP (PAP) \| 64	View	250 \| SMALL T&R
ADS1625IPAPTG4	ACTIVE	-40 to 85	22.00 \| 100u	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
ADS1625IPAPR	As of 9:02 AM GMT, 07 Sep 2008			As of 9:02 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 27 Oct	8 Weeks	Americas	Rochester Electronics	>1k
ADS1625IPAPRG4	As of 9:02 AM GMT, 07 Sep 2008			As of 9:02 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 27 Oct	8 Weeks	None Reported View Distributors
ADS1625IPAPT	As of 9:02 AM GMT, 07 Sep 2008			As of 9:02 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	500*		1 Weeks	Americas	DigiKey	108
	500*		1 Weeks	Americas	Rochester Electronics	>1k
ADS1625IPAPTG4	As of 9:02 AM GMT, 07 Sep 2008			As of 9:02 AM GMT, 07 Sep 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	500*		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
ADS1625IPAPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS1625IPAPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS1625IPAPT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
ADS1625IPAPTG4	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

18-Bit, 1.25MSPS Analog-to-Digital Converter (Rev. E) (ads1625.pdf, 877 KB)
21 May 2007 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
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

ADS1625/ADS1626 EVM User's Guide (slau123.htm, 8 KB)
20 Nov 2003 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
ADS1625 Evaluation Module	ADS1625EVM	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 ADS1625
Part #	Name	Comments
ADS1626	18 Bit, 1.25MSPS Single Channel Delta-Sigma ADC Single with FIFO	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.
ADS1606	16 Bit, 5MSPS Single Channel Delta-Sigma ADC Single with FIFO	16 bit equivalent device
ADS1610	16-Bit, 10MSPS Delta-Sigma Analog-to-Digital Converter	16 bit equivalent device with 10 MSPS bandwidth
ADS1605	16-bit, 5 MSPS Delta-Sigma, Analog-to-Digital Converter	16 bit equivalent device
ADS1602	16-Bit, 2.5MSPS Analog-to-Digital Converter	16 bit equivalent device with 2.5 MSPS bandwidth
ADS1601	16-Bit, 1.25MSPS Analog-to-Digital Converter	16 bit equivalent device with 1.25 MSPS bandwidth
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ADS8381	18 Bit 580KSPS parallel ADC	TI customers also evaluated this product.

Complementary Products - Can be used with ADS1625
Part #	Name	Product Family	Comments
THS4131	Fully Differential Input/Output Low Noise Amplifier	OPERATIONAL AMPLIFIERS- FULLY DIFFERENTIAL AMPLIFIERS	OPERATIONAL AMPLIFIER
THS4130	Fully Differential Input/Output Low Noise Amplifier With Shutdown	OPERATIONAL AMPLIFIERS- FULLY DIFFERENTIAL AMPLIFIERS	OPERATIONAL AMPLIFIER
Customers Who Evaluated This Product Also Evaluated...
DAC8811	16-Bit, Serial Input Multiplying Digital to Analog Converter	DATA CONVERTERS-DIGITAL TO ANALOG CONVERTERS	TI customers also evaluated this product.

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