ADS1246 Series

24-Bit, 2kSPS, 1-Ch Delta-Sigma ADC With PGA for Precision Sensor Measurement

Catalog

24-Bit, 2kSPS, 1-Ch Delta-Sigma ADC With PGA for Precision Sensor Measurement

Part	Sampling Rate (Per Second)	Number of Bits	Mounting Type	Reference Type	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Number of Inputs	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Features	Architecture	Configuration	Package / Case [x]	Package / Case	Package / Case [y]	Number of A/D Converters	Data Interface	Input Type	Utilized IC / Part	Supplied Contents
Texas Instruments ADS1246IPW	2k	24	Surface Mount	External Internal	5.25 V	2.7 V	2.7 V	5.25 V	1	16-TSSOP	-40 °C	105 ░C	PGA Temperature Sensor	Sigma-Delta	MUX-PGA-ADC	0.173 in	16-TSSOP	4.4 mm	1	SPI	Differential Single Ended
Texas Instruments ADS1246IPWR	2k	24	Surface Mount	External	5.25 V	2.7 V	2.7 V	5.25 V	1	16-TSSOP	-40 °C	105 ░C	PGA Temperature Sensor	Sigma-Delta	MUX-PGA-ADC	0.173 in	16-TSSOP	4.4 mm	1	SPI	Differential Single Ended
Texas Instruments ADS1246EVM	2k	24																	1	SPI		ADS1246	Board(s)

Catalog

24-Bit, 2kSPS, 1-Ch Delta-Sigma ADC With PGA for Precision Sensor Measurement

Key Features

• 24 Bits, No Missing CodesProgrammable Data Rates Up to 2 kSPSSingle-Cycle Settling for All Data RatesSimultaneous 50-Hz and 60-Hz Rejection at 20 SPSAnalog Multiplexer With 8 (ADS1248) and 4(ADS1247) Independently Selectable InputsLow-Noise PGA: 48 nVRMSat PGA = 128Dual-Matched Programmable Excitation Current SourcesLow-Drift Internal 2.048-V Reference:10 ppm/°C (Maximum)Sensor Burn-Out Detection4 or 8 General-Purpose I/Os (ADS1247, ADS1248)Internal Temperature SensorPower Supply and VREFMonitoring (ADS1247, ADS1248)Self and System CalibrationSPI™-Compatible Serial InterfaceAnalog Supply: Unipolar (2.7 V to 5.25 V) and Bipolar (±2.5 V) OperationDigital Supply: 2.7 V to 5.25 VOperating Temperature –40°C to 125°CAPPLICATIONSTemperature Sensor Measurements:RTDs, Thermocouples, and ThermistorsPressure MeasurementsFlow MetersFactory Automation and Process ControlsAll other trademarks are the property of their respective owners24 Bits, No Missing CodesProgrammable Data Rates Up to 2 kSPSSingle-Cycle Settling for All Data RatesSimultaneous 50-Hz and 60-Hz Rejection at 20 SPSAnalog Multiplexer With 8 (ADS1248) and 4(ADS1247) Independently Selectable InputsLow-Noise PGA: 48 nVRMSat PGA = 128Dual-Matched Programmable Excitation Current SourcesLow-Drift Internal 2.048-V Reference:10 ppm/°C (Maximum)Sensor Burn-Out Detection4 or 8 General-Purpose I/Os (ADS1247, ADS1248)Internal Temperature SensorPower Supply and VREFMonitoring (ADS1247, ADS1248)Self and System CalibrationSPI™-Compatible Serial InterfaceAnalog Supply: Unipolar (2.7 V to 5.25 V) and Bipolar (±2.5 V) OperationDigital Supply: 2.7 V to 5.25 VOperating Temperature –40°C to 125°CAPPLICATIONSTemperature Sensor Measurements:RTDs, Thermocouples, and ThermistorsPressure MeasurementsFlow MetersFactory Automation and Process ControlsAll other trademarks are the property of their respective owners

Description

The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The devices feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) 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 10-mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs). An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os (ADS1247 and ADS1248). The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle, for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter. The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The devices feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) 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 10-mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs). An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os (ADS1247 and ADS1248). The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle, for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.