ADS1234 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)
18 Feb 2008
Complete Front End Solutions for Weigh Scales (PDF 336 KB) 7268 views
14 Jun 2007

	ADS1130	ADS1131	ADS1230	ADS1231	ADS1232	ADS1234
Resolution(Bits)	18		20		24	24
Sample Rate (max)	80SPS		80SPS	80SPS	80SPS	80SPS
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	2.9	2.9	2.9	2.9	4.3	4.3
DNL(Max)(+/-LSB)	1	1	1	1	1	1
INL(Max)(+/-LSB)	0.0006%		0.0006%	0.0006%	0.0002%	0.0002%
No Missing Codes(Bits)	18	18	20	24	24	24
ENOB(Bits)	17.5	17.5	19.5	23.5	23.5	23.5
No. of Supplies	2	2	2	2	2	2
Analog Voltage AV/DD(Min)(V)	2.7	2.7	2.7	2.7	2.7	2.7
Analog Voltage AV/DD(Max)(V)	5.3	5.3	2.3	5.3	5.3	5.3
Logic Voltage DV/DD(Min)(V)	2.7	2.7	2.7		2.7	2.7
Logic Voltage DV/DD(Max)(V)	5.3	5.3	5.3		5.3	5.3
Input Configuration Range	0.5Vref/PGA (1,2,64)	0.5Vref/PGA	0.5Vref/PGA (1,2,64,128)	0.5Vref/PGA	0.5Vref/PGA (1,2,64,128)	0.5Vref/PGA (1,2,64,128)
Reference Mode	Ext	Ext	Ext	EXT	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Pin/Package	16TSSOP	16TSSOP	16TSSOP	16TSSOP	24TSSOP	28TSSOP
# Input Channels	1	1	1	1	2	4
	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory Not Available	Inventory	Inventory Not Available	Inventory	Inventory

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ADS1230: 20 Bit Delta Sigma ADC for Bridge Sensors
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SN74LVC1G32: Single 2-Input Positive-OR Gate
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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

View All Features in Datasheet

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.

View All Description in Datasheet

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
ADS1234IPW	ACTIVE	-40 to 105	6.20 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE
ADS1234IPWG4	ACTIVE	-40 to 105	6.20 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE
ADS1234IPWR	ACTIVE	-40 to 105	5.65 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R	Purchase Samples
ADS1234IPWRG4	ACTIVE	-40 to 105	5.65 \| 1ku	TSSOP (PW) \| 28	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

Reported Distributor Inventory as of 12:20 PM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksADS1234IPW
Europe	Compel	5
TI Lead Time*: 20 WeeksADS1234IPWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksADS1234IPWR
None Reported View Distributors
TI Lead Time*: 20 WeeksADS1234IPWRG4
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
ADS1234IPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1234IPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1234IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1234IPWRG4	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 ADS1234

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
ADS1230	20 Bit Delta Sigma ADC for Bridge Sensors	DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER	20bit single channel version
ADS1232	24-Bit, Ultra Low-Noise Analog-to-Digital Converter	DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER	2 channel version of ADS1234
ADS1241	24-Bit Analog-to-Digital Converter	DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER	The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.
ADS1243	24-Bit ADC, 8 Ch, PGA 1:128, 50/60 Hz Notch, 0.6 mW Power Consumption	DATA CONVERTERS - 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 AMPLIFIER - LOW OFFSET VOLTAGE
OPA369	1.8V, 700nA, Zero-Crossover Rail-To-Rail I/O Operational Amplifier	PRECISION AMPLIFIER - LOW POWER
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Weigh Scale / Bridge Sensor

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ADS1234 Status: ACTIVE

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

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