ADS7868 Status: ACTIVE

1.2V, 8 bit 280KSPS, Serial ADC

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Datasheet

1.2-V 12/10/8-Bit 200-KSPS/100-KSPS MICRO-POWER MINIATURE ADC s/Serial Interface (ads7868.pdf, 717 KB)
01 Jul 2005 Download

	ADS7868
Resolution(Bits)	8
Sample Rate (max)	280kSPS
Architecture	SAR
Power Consumption(Typ)(mW)	0.22
SINAD(dB)	49.4
SNR(dB)	49.8
SFDR(dB)	67
DNL(Max)(+/-LSB)	0.5
INL(Max)(+/-LSB)	0.5
No Missing Codes(Bits)	8
ENOB(Bits)	7.91
No. of Supplies	1
Analog Voltage AV/DD(Min)(V)	1.2
Analog Voltage AV/DD(Max)(V)	3.6
Logic Voltage DV/DD(Min)(V)	1.2
Logic Voltage DV/DD(Max)(V)	3.6
Input Configuration Range	AVDD
Reference Mode	Ext
Rating	Catalog
Pin/Package	6SOT-23
Comments	SOT23-6
# Input Channels	1
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1000: Low Cost 12-bit ADC with I2C Interface
ADS7866: 1.2V, 12 Bit 200KSPS, Serial ADC
TLC549: 8-Bit, 40 kSPS ADC Serial Out, Low Power, Compatible to TLC540/545/1540, Single Ch.
TVP5150AM1: Ultralow Power NTSC/PAL/SECAM Video Decoder w/Robust Sync Detector
BQ24032A: Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2V
SN74LVC2T45: Dual-Bit Dual Supply Transceiver with Configurable Voltage Translation and 3-State Outputs

More Related Products

Product Information

Features

Single 1.2-V to 3.6-V Supply Operation
High Throughput
- 200/240/280KSPS for 12/10/8-Bit V_DD 1.6 V
- 100/120/140KSPS for 12/10/8-Bit V_DD 1.2 V
±1.5LSB INL, 12-Bit NMC (ADS7866)
71 dB SNR, –83 dB THD at f_IN = 30 kHz (ADS7866)
Synchronized Conversion with SCLK
SPI Compatible Serial Interface
No Pipeline Delays
Low Power
- 1.39 mW Typ at 200 KSPS, V_DD = 3.6 V
- 0.39 mW Typ at 200 KSPS, V_DD = 1.6 V
- 0.22 mW Typ at 100 KSPS, V_DD = 1.2 V
Auto Power-Down: 8 nA Typ, 300 nA Max
0 V to V_DD Unipolar Input Range
6-Pin SOT-23 Package
APPLICATIONS
- Battery Powered Systems
- Isolated Data Acquisition
- Medical Instruments
- Portable Communication
- Portable Data Acquisition Systems
- Automatic Test Equipment

Description

The ADS7866/67/68 are low power, miniature, 12/10/8-bit A/D converters each with a unipolar, single-ended input. These devices can operate from a single 1.6 V to 3.6 V supply with a 200-KSPS throughput for ADS7866. In addition, these devices can maintain at least a 100-KSPS throughput with a supply as low as 1.2 V.

The sampling, conversion, and activation of digital output SDO are initiated on the falling edge of CS\. The serial clock SCLK is used for controlling the conversion rate and shifting data out of the converter. Furthermore, SCLK provides a mechanism to allow digital host processors to synchronize with the con- verter. These converters interface with micro-processors or DSPs through a high-speed SPI compatible serial interface. There are no pipeline delays associated with the device.

The minimum conversion time is determined by the frequency of the serial clock input, SCLK, while the maximum frequency of SCLK is determined by the minimum sampling time required to charge the input capacitance to 12/10/8-bit accuracy for the ADS7866/67/68, respectively. The maximum throughput is determined by how often a conversion is initiated when the minimum sampling time is met and the maximum SCLK frequency is used. Each device automatically powers down after each conversion, which allows each device to save power when the throughput is reduced while using the maximum SCLK frequency.

The converter reference is taken internally from the supply. Hence, the analog input range for these devices is 0 V to V_DD.

These devices are available in a 6-pin SOT-23 package and are characterized over the industrial –40°C to 85°C temperature range.

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
ADS7868IDBVR	ACTIVE	-40 to 85	1.00 \| 100u	SOT-23 (DBV) \| 6	View	3000 \| LARGE T&R	Purchase Samples
ADS7868IDBVRG4	ACTIVE	-40 to 85	1.00 \| 100u	SOT-23 (DBV) \| 6	View	3000 \| LARGE T&R	Purchase Samples
ADS7868IDBVT	ACTIVE	-40 to 85	1.10 \| 100u	SOT-23 (DBV) \| 6	View	250 \| SMALL T&R
ADS7868IDBVTG4	ACTIVE	-40 to 85	1.10 \| 100u	SOT-23 (DBV) \| 6	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
ADS7868IDBVR	As of 9:17 AM GMT, 07 Oct 2008			As of 9:17 AM GMT, 07 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 30 Dec	12 Weeks	Americas	Mouser Electronics	>1k
ADS7868IDBVRG4	As of 9:17 AM GMT, 07 Oct 2008			As of 9:17 AM GMT, 07 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 30 Dec	12 Weeks	Americas	DigiKey	>1k
ADS7868IDBVT	As of 9:17 AM GMT, 07 Oct 2008			As of 9:17 AM GMT, 07 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 30 Dec	12 Weeks	Americas	DigiKey	240
					Mouser Electronics	6
					Rochester Electronics	500
				Asia	WPI	30
ADS7868IDBVTG4	As of 9:17 AM GMT, 07 Oct 2008			As of 9:17 AM GMT, 07 Oct 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 30 Dec	12 Weeks	Europe	Farnell	66
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
ADS7868IDBVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7868IDBVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7868IDBVT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS7868IDBVTG4	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

1.2-V 12/10/8-Bit 200-KSPS/100-KSPS MICRO-POWER MINIATURE ADC s/Serial Interface (ads7868.pdf, 717 KB)
01 Jul 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 ADS786x to TMS470 Processors (slaa312.htm, 8 KB)
10 Jul 2006 Abstract
Interfacing the ADS786x to the MSP430F2013 (slaa308.htm, 8 KB)
15 Jun 2006 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

ADS7866EVM/ADS7867EVM/ADS7868EVM (slau181.pdf, 521 KB)
07 Jul 2006 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
ADS7868EVM Evaluation Module	ADS7868EVM	Texas Instruments	Development Boards/EVMs

Alternative Products - Are similar to ADS7868
Part #	Name	Comments
ADS7866	1.2V, 12 Bit 200KSPS, Serial ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 12 bit equivalent device
ADS7867	1.2V, 10 bit 240KSPS, Serial ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 10 bit equivalent device
ADS7888	2.35V-5.25V, 8 Bit, 1.25MSPS, Serial ADC	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Faster upgrade for the ADS7868
Customers Who Evaluated This Product Also Evaluated...
ADS1000	Low Cost 12-bit ADC with I2C Interface	TI customers also evaluated this product.
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TLC549	8-Bit, 40 kSPS ADC Serial Out, Low Power, Compatible to TLC540/545/1540, Single Ch.	TI customers also evaluated this product.
ADS7888	2.35V-5.25V, 8 Bit, 1.25MSPS, Serial ADC	TI customers also evaluated this product.

Complementary Products - Can be used with ADS7868
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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ADS7868 Status: ACTIVE

1.2V, 8 bit 280KSPS, Serial ADC

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