ADS1232 Status: ACTIVE

24-Bit, Ultra Low-Noise Analog-to-Digital Converter

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Datasheet

24-Bit Analog-to-Digital Converter for Bridge Sensors (Rev. F) (PDF 647 KB) 15672 views
18 Feb 2008
Complete Front End Solutions for Weigh Scales (PDF 336 KB) 5982 views
14 Jun 2007

	ADS1130	ADS1230	ADS1232	ADS1234
Resolution(Bits)	18	20	24	24
Sample Rate (max)	80SPS	80SPS	80SPS	80SPS
Architecture	Delta Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	2.9	2.9	4.3	4.3
DNL(Max)(+/-LSB)	1	1	1	1
INL(Max)(+/-LSB)	0.0006%	0.0006%	0.0002%	0.0002%
No Missing Codes(Bits)	18	20	24	24
ENOB(Bits)	17.5	19.5	23.5	23.5
No. of Supplies	2	2	2	2
Analog Voltage AV/DD(Min)(V)	2.7	2.7	2.7	2.7
Analog Voltage AV/DD(Max)(V)	5.3	2.3	5.3	5.3
Logic Voltage DV/DD(Min)(V)	2.7	2.7	2.7	2.7
Logic Voltage DV/DD(Max)(V)	5.3	5.3	5.3	5.3
Input Configuration Range	0.5Vref/PGA (1,2,64)	0.5Vref/PGA (1,2,64,128)	0.5Vref/PGA (1,2,64,128)	0.5Vref/PGA (1,2,64,128)
Reference Mode	Ext	Ext	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog
Pin/Package	16TSSOP	16TSSOP	24TSSOP	28TSSOP
# Input Channels	1	1	2	4
	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

ADS1255: 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC
ADS1282: Ultra High Resolution Delta Sigma ADC with PGA for Seismic and Energy Exploration
ADS1226: 24 Bit ADC with Two Differential Input Multiplexer and Internal Oscillator
SN74LVC4245A: Octal Bus Transceiver And 3.3-V To 5-V Shifter With 3-State Outputs
MSP430F5438: 16-Bit Ultra-Low-Power Microcontroller, 256KB Flash, 16KB RAM, 12 Bit ADC, 4 USCIs, 32-bit HW Multi
LM339: Quad Differential Comparator

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Product Information

Features

Complete Front-End for Bridge Sensors
Up to 23.5 Effective Bits
Onboard, Low-Noise PGA
RMS Noise:
17nV at 10SPS (PGA = 128)
44nV at 80SPS (PGA = 128)
19.2-Bit Noise-Free Resolution at Gain = 64
Over 100dB Simultaneous 50Hz and 60Hz Rejection
Flexible Clocking:
Low-Drift Onboard Oscillator (±3%) Optional External Crystal
Selectable Gains of 1, 2, 64, and 128
Easy Ratiometric Measurements—External Voltage Reference up to 5V
Selectable 10SPS or 80SPS Data Rates
Two-Channel Differential Input with Built-In Temperature Sensor (ADS1232)
Four-Channel Differential Input (ADS1234)
Simple Serial Digital Interface
Supply Range: 2.7V to 5.3V
-40°C to +105°C Temperature Range
APPLICATIONS
- Weigh Scales
- Strain Gauges
- Pressure Sensors
- Industrial Process Control

All trademarks are the property of their respective owners.

Description

The ADS1232 and ADS1234 are precision 24-bit analog-to-digital converters (ADCs). With an onboard, low-noise programmable gain amplifier (PGA), precision delta-sigma ADC and internal oscillator, the ADS1232/4 provide a complete front-end solution for bridge sensor applications including weigh scales, strain gauges and pressure sensors.

The input multiplexer accepts either two (ADS1232) or four (ADS1234) differential inputs. The ADS1232 also includes an onboard temperature sensor to monitor ambient temperature. The onboard, low-noise PGA has a selectable gain of 1, 2, 64, or 128 supporting a full-scale differential input of ±2.5V, ±1.25V, ±39mV, or ±19.5mV. The delta-sigma ADC has 23.5-bit effective resolution and is comprised of a 3rd-order modulator and 4th-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1232/4 can be clocked externally using an oscillator or a crystal. There is also an internal oscillator available that requires no external components. Offset calibration is performed on-demand and the ADS1232/4 can be put in a low-power standby mode or shut off completely in power-down mode. All of the features of the ADS1232/4 are operated through simple pin-driven control. There are no digital registers to program in order to simplify software development. Data are output over an easily-isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The ADS1232 is available in a TSSOP-24 package and the ADS1234 is in a TSSOP-28. Both are fully specified from -40°C to +105°C.

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
ADS1232IPW	ACTIVE	-40 to 105	4.30 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE
ADS1232IPWG4	ACTIVE	-40 to 105	4.30 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE
ADS1232IPWR	ACTIVE	-40 to 105	3.90 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R	Purchase Samples
ADS1232IPWRG4	ACTIVE	-40 to 105	3.90 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R	Purchase Samples

* 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
ADS1232IPW	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
	14 Weeks	Americas	Mouser Electronics	30
		Asia	WPI	7
		Europe	Compel	62
ADS1232IPWG4	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
	14 Weeks	None Reported View Distributors
ADS1232IPWR	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
	14 Weeks	Americas	Rochester Electronics	>1k
ADS1232IPWRG4	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
	14 Weeks	None Reported View Distributors
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
ADS1232IPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1232IPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1232IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1232IPWRG4	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 ADS1232

Datasheet

24-Bit Analog-to-Digital Converter for Bridge Sensors (Rev. F) (PDF 647 KB) 15672 views
18 Feb 2008

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
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

View Application Notes for Analog to Digital Converters

User Guides

ADS1232REF User's Guide (Rev. A) (PDF 1357 KB) 3725 views
28 Sep 2007

View User Guides for Analog to Digital Converters

White Papers

Complete Front End Solutions for Weigh Scales (PDF 336 KB) 5982 views
14 Jun 2007

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
ADS1232REF Evaluation Module	ADS1232REF	Texas Instruments	Development Boards/EVMs

Part #	Name	Product Family	Comments
ADS1230	20 Bit Delta Sigma ADC for Bridge Sensors		20bit single channel version
ADS1240	24-Bit Analog-to-Digital Converter		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.
ADS1242	24-Bit ADC, 4 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.
ADS1234	24-Bit, Ultra Low-Noise Analog-to-Digital Converter		4 channel version of ADS1232
OPA333	1.8V, 17uA, 2uV, microPOWER CMOS Zero-Drift Series Operational Amplifier	PRECISION AMPLIFIERS - LOW OFFSET VOLTAGE
OPA369	1.8V, 700nA, Zero-Crossover Rail-To-Rail I/O Operational Amplifier	PRECISION AMPLIFIERS - LOW POWER
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Ultra-Low Power Microcontrollers