ADS1258 Status: ACTIVE

24 Bit, Fast Channel Cycling Delta-Sigma ADC

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Datasheet

16-Channel, 24-Bit Analog-to-Digital Converter (Rev. E) (PDF 1024 KB) 14593 views
02 Oct 2007

	ADS1158	ADS1250	ADS1251	ADS1252	ADS1253	ADS1254	ADS1255	ADS1258
Resolution(Bits)	16	20	24	24	24	24	24	24
Sample Rate (max)	125KSPS	25kSPS	20kSPS	41kSPS	20kSPS	20kSPS	30kSPS	125kSPS
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Power Consumption(Typ)(mW)	42	75	7.5	40	7.5	4.36	36	42
DNL(Max)(+/-LSB)	1	1	1	1	1	1	2	1
INL(Max)(+/-LSB)	1	0.0012%	0.0002%	0.0003%	0.0002%	0.0002%	0.0003%	0.0003%
No Missing Codes(Bits)	16	20	24	24	24	24	24	24
ENOB(Bits)	16	18	19	19	19	19	23	21.6
No. of Supplies	2	1	1	1	1	2	2	2
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75	4.75	4.75	4.75	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	2.5	4.75	4.75	4.75	4.75	1.8	1.8	2.5
Logic Voltage DV/DD(Max)(V)	3.6	5.25	5.25	5.25	5.25	3.6	3.6	3.6
Input Configuration Range	1.06 Vref	Vref/PGA (1-8)	Vref	Vref	Vref	Vref	2Vref/PGA(1-64)	1.06Vref
Reference Mode	Ext	Ext	Ext	Ext	Ext	Ext	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Pin/Package	48QFN	16SOIC	8SOIC	8SOIC	16SSOP/QSOP	20SSOP/QSOP	20SSOP	48QFN
# Input Channels	16	1	1	1	4	4	2	16
	Samples	Samples	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Other qualified versions of ADS1258

Version	Part Number	Definition
Enhanced Product	ADS1258-EP	Supports Defense, Aerospace and Medical Applications

Customers Who Evaluated This Product Also Evaluated

ADS1278: Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC
ADS1271: 24-Bit, 105kSPS Industrial Delta-Sigma ADC
ADS1256: 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC with Multiplexer
TMS320F2808: 32-Bit Digital Signal Controller with Flash
INA333: Low Power, Precision Instrumentation Amplifier
CC2591: 2.4 GHz RF Front End

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Product Information

Features

24 Bits, No Missing Codes
Fixed-Channel or Automatic Channel Scan
Fixed-Channel Data Rate: 125kSPS
Auto-Scan Data Rate: 23.7kSPS/Channel
Single-Conversion Settled Data
16 Single-Ended or 8 Differential Inputs
Unipolar (+5V) or Bipolar (±2.5V) Operation
Low Noise: 2.8µV_RMS at 1.8kSPS
0.0003% Integral Nonlinearity
DC Stability (typical):
0.02µV/°C Offset Drift, 0.4ppm/°C Gain Drift
Open-Sensor Detection
Conversion Control Pin
Multiplexer Output for External Signal Conditioning
On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
42mW Power Dissipation
Standby, Sleep, and Power-Down Modes
8 General-Purpose Inputs/Outputs (GPIO)
32.768kHz Crystal Oscillator or External Clock
APPLICATIONS
- Medical, Avionics, and Process Control
- Machine and System Monitoring
- Fast Scan Multi-Channel Instrumentation
- Industrial Systems
- Test and Measurement Systems

2SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.

Description

The ADS1258 is a 16-channel (multiplexed), low-noise, 24-bit, delta-sigma () analog-to-digital converter (ADC) that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a full-scale differential range of 5V or true bipolar range of ±2.5V when operating with a 5V reference. The fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise performance.

The differential output of the multiplexer is accessible to allow signal conditioning prior to the input of the ADC. Internal system monitor registers provide supply voltage, temperature, reference voltage, gain, and offset data.

An onboard PLL generates the system clock from a 32.768kHz crystal, or can be overridden by an external clock source. A buffered system clock output (15.7MHz) is provided to drive a microcontroller or additional converters.

Serial digital communication is handled via an SPI™-compatible interface. A simple command word structure controls channel configuration, data rates, digital I/O, monitor functions, etc.

Programmable sensor bias current sources can be used to bias sensors or verify sensor integrity.

The ADS1258 operates from a unipolar +5V or bipolar ±2.5V analog supply and a digital supply compatible with interfaces ranging from 2.7V to 5.25V. The ADS1258 is available in a QFN-48 package.

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	Samples
ADS1258IRTCR	ACTIVE	-40 to 105	9.95 \| 1ku	QFN (RTC) \| 48	View	2500 \| LARGE T&R	Purchase Samples
ADS1258IRTCRG4	ACTIVE	-40 to 105	9.95 \| 1ku	QFN (RTC) \| 48	View	2500 \| LARGE T&R	Purchase Samples
ADS1258IRTCT	ACTIVE	-40 to 105	10.95 \| 1ku	QFN (RTC) \| 48	View	250 \| SMALL T&R
ADS1258IRTCTG4	ACTIVE	-40 to 105	10.95 \| 1ku	QFN (RTC) \| 48	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
ADS1258IRTCR	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
	4 Weeks	Americas	DigiKey	Available
ADS1258IRTCRG4	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
	4 Weeks	Americas	DigiKey	Available
ADS1258IRTCT	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
	4 Weeks	Americas	Arrow	52
			Avnet	>1k
			DigiKey	>1k
			Mouser Electronics	387
			Newark	476
			Rochester Electronics	450
		Asia	WPI	404
		Europe	Avnet-SILICA	252
			Compel	426
			Farnell	140
ADS1258IRTCTG4	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
	4 Weeks	Americas	DigiKey	Available
	4 Weeks	Europe	Farnell	147
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
ADS1258IRTCR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1258IRTCRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1258IRTCT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
ADS1258IRTCTG4	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 ADS1258

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
ADS1258EVM Evaluation Module	ADS1258EVM	Texas Instruments	Development Boards/EVMs
ADS1258EVM-PDK Evaluation Module	ADS1258EVM-PDK	Texas Instruments	Development Boards/EVMs
DCPFREETOOL Software Plug-In to Code Composer Studio	DCPFREETOOL	Texas Instruments	Utilities/Plug-Ins
ADCPro(TM) Analog-to-Digital Converter Evaluation Software	ADCPRO	Texas Instruments	Application Software

Part #	Name	Product Family	Comments
ADS1278	Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Similar Device with better AC performance
ADS1274	Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 4 channel version of ADS1278
ADS1256	24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC with Multiplexer		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 4 channel version of ADS1258
ADS1255	24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC		The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. Single channel version of ADS1258
OPA277	High Precision Operational Amplifiers	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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