ADS1261-Q1 Series

24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation

Catalog

24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation

Part	Package / Case	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Mounting Type	Number of Inputs	Reference Type	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog	Number of A/D Converters	Architecture	Number of Bits	Data Interface	Features	Configuration	Input Type	Sampling Rate (Per Second)	Qualification	Ratio - S/H:ADC	Grade
Texas Instruments ADS1261IRHBR	32-VFQFN Exposed Pad	32-VQFN (5x5)	-40 °C	125 °C	5.25 V	2.7 V	Surface Mount	5 10	External Internal	5.25 V	4.75 V	2.5 V	1	Sigma-Delta	24	SPI	PGA Temperature Sensor	MUX-PGA-ADC	Differential Single Ended	40k
Texas Instruments ADS1261BQWRHMRQ1	32-VFQFN Exposed Pad	32-VQFN (5x5)	-40 °C	125 °C	5.25 V	2.7 V	Surface Mount Wettable Flank	10	External Internal	5.25 V	4.75 V		1	Sigma-Delta	24	SPI	PGA	MUX-PGA-ADC	Differential	40k	AEC-Q100	0:1	Automotive
Texas Instruments ADS1261IRHBT	32-VFQFN Exposed Pad	32-VQFN (5x5)	-40 °C	125 °C	5.25 V	2.7 V	Surface Mount	5 10	External Internal	5.25 V	4.75 V	2.5 V	1	Sigma-Delta	24	SPI	PGA Temperature Sensor	MUX-PGA-ADC	Differential Single Ended	40k
Texas Instruments ADS1261BIRHBR	32-VFQFN Exposed Pad	32-VQFN (5x5)	-40 °C	125 °C	5.25 V	2.7 V	Surface Mount	10	External Internal	5.25 V	4.75 V		1	Sigma-Delta	24	SPI	PGA	MUX-PGA-ADC	Differential Single Ended	40k

Catalog

24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation

Key Features

• AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +125°C, TA24-bit, high-precision ADCsOffset drift: 1 nV/°CGain drift: 0.5 ppm/°CNoise: 30 nVRMS(20 SPS, gain = 128)Linearity: 2 ppmCMOS PGA gain: 1 to 128Data rate: 2.5 SPS to 40 kSPS2.5-V reference: 4 ppm/°CSingle-cycle settling modeSignal and reference monitors5-V or ±2.5-V power supplyInternal temperature sensorCyclic redundancy check (CRC)Excitation current sourcesSensor burn-out current sourcesFour general-purpose inputs/outputs(ADS1261-Q1)AC excitation for bridge sensors (ADS1261-Q1)5-mm × 5-mm VQFN packageAEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +125°C, TA24-bit, high-precision ADCsOffset drift: 1 nV/°CGain drift: 0.5 ppm/°CNoise: 30 nVRMS(20 SPS, gain = 128)Linearity: 2 ppmCMOS PGA gain: 1 to 128Data rate: 2.5 SPS to 40 kSPS2.5-V reference: 4 ppm/°CSingle-cycle settling modeSignal and reference monitors5-V or ±2.5-V power supplyInternal temperature sensorCyclic redundancy check (CRC)Excitation current sourcesSensor burn-out current sourcesFour general-purpose inputs/outputs(ADS1261-Q1)AC excitation for bridge sensors (ADS1261-Q1)5-mm × 5-mm VQFN package

Description

The ADS1260 and ADS1261 (ADS126x) are precision, 40-kSPS, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) that include a programmable gain amplifier (PGA). The devices also include a precision voltage reference and internal fault monitors. The sensor-ready ADCs give a high-accuracy, single-chip solution for the most demanding measurements, for example, weigh scales and resistance temperature detectors (RTDs). The ADCs contain an input signal multiplexer, a low-noise PGA (with gains from 1 to 128), a 24-bit ΔΣ modulator, a precision voltage reference, and a programmable digital filter. The high-impedance PGA inputs (1 GΩ) decrease measurement error due to sensor loading. The ADS1260 supports three differential or five single-ended inputs. The ADS1261 supports five differential or ten single-ended inputs. The integrated current sources simplify the measurement of RTDs. The flexible digital filter is programmable for single-cycle settled conversions, while supplying simultaneous 50-Hz and 60-Hz line cycle rejection. Signal and reference monitors, a temperature sensor, and CRC data verification make data reliability better. The ADS126x are pin compatible devices given in a 5-mm × 5-mm VQFN package and are specified across the –40°C to +125°C temperature range. The ADS1260 and ADS1261 (ADS126x) are precision, 40-kSPS, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) that include a programmable gain amplifier (PGA). The devices also include a precision voltage reference and internal fault monitors. The sensor-ready ADCs give a high-accuracy, single-chip solution for the most demanding measurements, for example, weigh scales and resistance temperature detectors (RTDs). The ADCs contain an input signal multiplexer, a low-noise PGA (with gains from 1 to 128), a 24-bit ΔΣ modulator, a precision voltage reference, and a programmable digital filter. The high-impedance PGA inputs (1 GΩ) decrease measurement error due to sensor loading. The ADS1260 supports three differential or five single-ended inputs. The ADS1261 supports five differential or ten single-ended inputs. The integrated current sources simplify the measurement of RTDs. The flexible digital filter is programmable for single-cycle settled conversions, while supplying simultaneous 50-Hz and 60-Hz line cycle rejection. Signal and reference monitors, a temperature sensor, and CRC data verification make data reliability better. The ADS126x are pin compatible devices given in a 5-mm × 5-mm VQFN package and are specified across the –40°C to +125°C temperature range.