ADS1242 Status: ACTIVE

24-Bit ADC, 4 Ch, PGA 1:128, 50/60 Hz Notch, 0.6 mW Power Consumption

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Datasheet

24-Bit Analog-To-Digital Converter (Rev. G) (PDF 597 KB) 6373 views
23 Feb 2007

	ADS1242
Resolution(Bits)	24
Sample Rate (max)	15SPS
Architecture	Delta-Sigma
Power Consumption(Typ)(mW)	0.6
DNL(Max)(+/-LSB)	1
INL(Max)(+/-LSB)	0.0015%
No Missing Codes(Bits)	24
No. of Supplies	1
Analog Voltage AV/DD(Min)(V)	2.7
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/PGA (1-128)
Reference Mode	Ext
Rating	Catalog
Pin/Package	16TSSOP
# Input Channels	4
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1255: 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC
ADS1211: 24-Bit Analog-to-Digital Converter
ADS1274: Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC
SN74AHC1G08: Single 2-Input Positive-AND Gate
TPS54331: 3A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-mode ™
SN74AHC1G14: Single Schmitt-Trigger Inverter Gate

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Product Information

Features

24 BITS NO MISSING CODES
SIMULTANEOUS 50Hz AND 60Hz REJECTION (-90dB MINIMUM)
0.0015% INL
21 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128)
PGA GAINS FROM 1 TO 128
SINGLE-CYCLE SETTLING
PROGRAMMABLE DATA OUTPUT RATES
EXTERNAL DIFFERENTIAL REFERENCE OF 0.1V TO 5V
ON-CHIP CALIBRATION
SPI™ COMPATIBLE
2.7V TO 5.25V SUPPLY RANGE
600µW POWER CONSUMPTION
UP TO EIGHT INPUT CHANNELS
UP TO EIGHT DATA I/O
APPLICATIONS
- INDUSTRIAL PROCESS CONTROL
- LIQUID/GAS CHROMATOGRAPHY
- BLOOD ANALYSIS
- SMART TRANSMITTERS
- PORTABLE INSTRUMENTATION
- WEIGHT SCALES

All trademarks are the property of their respective owners.

Description

The ADS1242 and ADS1243 are precision, wide dynamic range, delta-sigma, analog-to-digital (A/D) converters with 24-bit resolution operating from 2.7V to 5.25V supplies. These delta-sigma, A/D converters provide up to 24 bits of no missing code performance and effective resolution of 21 bits.

The input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit digital-to-analog converter (DAC) provides an offset correction with a range of 50% of the FSR (Full-Scale Range).

The Programmable Gain Amplifier (PGA) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a second-order delta-sigma modulator and programmable FIR filter that provides a simultaneous 50Hz and 60Hz notch. The reference input is differential and can be used for ratiometric conversion.

The serial interface is SPI compatible. Up to eight bits of data I/O are also provided that can be used for input or output. The ADS1242 and ADS1243 are designed for high-resolution measurement applications in smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation.

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
ADS1242IPWR	ACTIVE	-40 to 85	3.60 \| 1ku	TSSOP (PW) \| 16	View	2500 \| LARGE T&R	Purchase Samples
ADS1242IPWRG4	ACTIVE	-40 to 85	3.60 \| 1ku	TSSOP (PW) \| 16	View	2500 \| LARGE T&R	Purchase Samples
ADS1242IPWT	ACTIVE	-40 to 85	4.00 \| 1ku	TSSOP (PW) \| 16	View	250 \| SMALL T&R
ADS1242IPWTG4	ACTIVE	-40 to 85	4.00 \| 1ku	TSSOP (PW) \| 16	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
ADS1242IPWR	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
	16 Weeks	Americas	DigiKey	Available
ADS1242IPWRG4	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
	16 Weeks	Americas	DigiKey	Available
ADS1242IPWT	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
	20 Weeks	Americas	Arrow	750
			DigiKey	>1k
			Mouser Electronics	224
			Newark	128
			Rochester Electronics	500
		Asia	WPI	169
		Europe	Avnet-SILICA	200
		Europe	Compel	650
ADS1242IPWTG4	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
	20 Weeks	Americas	DigiKey	Available
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
ADS1242IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
ADS1242IPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
ADS1242IPWT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1242IPWTG4	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

Most useful technical documents for ADS1242

Datasheet

24-Bit Analog-To-Digital Converter (Rev. G) (PDF 597 KB) 6373 views
23 Feb 2007

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
Measuring Single-Ended 0V-5V Signals with Differential Delta-Sigma ADCs (HTM 8 KB) 3143 views
25 Aug 2005 Read Abstract
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (HTM 8 KB) 4069 views
27 Sep 2000 Read Abstract
Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (HTM 8 KB) 4449 views
27 Sep 2000 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
Inputs Currents for High-Resolution ADCs (HTM 8 KB) 1561 views
06 Mar 2003 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

Part #	Name	Product Family	Comments
ADS1240	24-Bit Analog-to-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Has a different package than ADS1242
ADS1243	24-Bit ADC, 8 Ch, PGA 1:128, 50/60 Hz Notch, 0.6 mW Power Consumption		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Has 8 serial and 4 Diff channels
ADS1232	24-Bit, Ultra Low-Noise Analog-to-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.
ADS1234	24-Bit, Ultra Low-Noise Analog-to-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.
OPA333	1.8V, 17uA, 2uV, microPOWER CMOS Zero-Drift Series Operational Amplifier	PRECISION AMPLIFIERS - LOW OFFSET VOLTAGE	OPERATIONAL AMPLIFIER
OPA369	1.8V, 700nA, Zero-Crossover Rail-To-Rail I/O Operational Amplifier	PRECISION AMPLIFIERS - LOW POWER	OPERATIONAL AMPLIFIER
REF5025	Low Noise, Very Low Drift, Precision Voltage Reference	REFERENCES - SERIES VOLTAGE REFERENCES	SERIES VOLTAGE REFERENCE
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