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Precision 24 Bit ADC with integrated Low Noise PGA (48nV at a Gain of 128)

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Product Code : ADS1248

Product Specification

Precision 24 Bit ADC with integrated Low Noise PGA (48nV at a Gain of 128)

The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The ADS1246/7/8 feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma (Â£) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1247 and ADS1248 also provide a built-in, very low drift voltage reference with 10mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The ADS1246/7/8 provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and RTDs.

An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246.

View full Description in Datasheet

Device Uses

Temperature Measurement
- RTDs, Thermocouples, and Thermistors
Pressure Measurement
Industrial Process Control

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

Features

24 Bits, No Missing Codes
Data Output Rates Up to 2kSPS
Single-Cycle Settling for All Data Rates
Simultaneous 50/60Hz Rejection at 20SPS
4 Differential/7 Single-Ended Inputs (ADS1248)
2 Differential/3 Single-Ended Inputs (ADS1247)
Low-Noise PGA: 48nV at PGA = 128
Matched Current Source DACs
Very Low Drift Internal Voltage Reference: 10ppm/Â°C (max)
Sensor Burnout Detection
4/8 General-Purpose I/Os (ADS1247/8)
Internal Temperature Sensor
Power Supply and V_REF Monitoring (ADS1247/8)
Self and System Calibration
SPIÃ¢â€žÂ¢-Compatible Serial Interface
Analog Supply Unipolar (+2.7V to +5.25V)/Bipolar (Â±2.5V) Operation
Digital Supply: +2.7V to +5.25V
Operating Temperature 40Â°C to +125Â°C

Featured Tools and Software

ADCPro(TM) Analog-to-Digital Converter Evaluation Software
Application Software

ADS1x4x IBIS Model
Simulation Models

ADS1248 Performance Demonstration Kit
Development Boards/EVMs

View all tools and software

Parametrics

	ADS1146	ADS1147	ADS1148	ADS1246	ADS1247	ADS1248
Resolution(Bits)	16	16	16	24	24	24
Sample Rate (max)	2kSPS	2kSPS	2kSPS	2KSPS	2KSPS	2KSPS
# Input Channels	1	3	7	1	3	7
Interface	Serial SPI Interface	Serial SPI Interface	Serial SPI Interface	Serial SPI Interface	Serial SPI Interface	Serial SPI Interface
INL(Max)(+/-LSB)	0.0015	0.0015	0.0015	0.0015	0.0015	0.0015
INL (+/-)(Max)(%)	0.00002	0.00002	0.00002	0.00002	0.00002	0.00002
Power Consumption(Typ)(mW)	2.3	2.3	2.3	2.3	2.3	2.3
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Analog Voltage AV/DD(Min)(V)	2.7	2.7	2.7	2.7	2.7	2.7
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.25	5.25
Operating Temperature Range(Ã‚Â°C)	-40 to 105	-40 to 105	-40 to 105	-40 to 105	-40 to 105	-40 to 105
Digital Supply(Min)(V)	2.7	2.7	2.7	2.7	2.7	2.7
Digital Supply(Max)(V)	5.25	5.25	5.25	5.25	5.25	5.25
	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

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