ADS1262 32-bit 38-kSPS 10-ch delta-sigma ADC with PGA and voltage reference for factory automation

Description

The ADS1262 and ADS1263 are low-noise, low-drift, 38.4-kSPS, delta-sigma (ΔΣ) ADCs with an integrated PGA, reference, and internal fault monitors. The ADS1263 integrates an auxiliary, 24-bit, ΔΣ ADC intended for background measurements. The sensor-ready ADCs provide complete, high-accuracy, one-chip measurement solutions for the most-demanding sensor applications, including weigh scales, strain-gauge sensors, thermocouples, and resistance temperature devices (RTD).

The ADCs are comprised of a low-noise, CMOS PGA (gains 1 to 32), a ΔΣ modulator, followed by a programmable digital filter. The flexible analog front-end (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement.

A single-cycle settling digital filter maximizes multiple-input conversion throughput, while providing 130-dB rejection of 50-Hz and 60-Hz line cycle interference.

The ADS1262 and ADS1263 are pin and functional compatible. These devices are available in a 28-pin TSSOP package and are fully specified over the –40°C to +125°C temperature range.

Features

Precision, 32-bit, ΔΣ ADC
Auxiliary 24-Bit, ΔΣ ADC (ADS1263)
Data Rates: 2.5 SPS to 38400 SPS
Differential Input, CMOS PGA
11 Multifunction Analog Inputs
High-Accuracy Architecture
- Offset Drift: 1 nV/°C
- Gain Drift: 0.5 ppm/°C
- Noise: 7 nV_RMS (2.5 SPS, Gain = 32)
- Linearity: 3 ppm
2.5-V Internal Voltage Reference
- Temperature Drift: 2 ppm/°C
50-Hz and 60-Hz Rejection
Single-Cycle Settled Conversions
Dual Sensor Excitation Current Sources
Internal Fault Monitors
Internal ADC Test Signal
8 General-Purpose Input/Outputs

Parametrics

Compare all products in Precision ADCs (<=10MSPS)

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Part number	Order	Resolution (Bits)	Sample rate (Max) (kSPS)	Number of input channels	Interface	Operating temperature range (C)	Package Group	Approx. price (US$)	Power consumption (Typ) (mW)	Package size: mm2:W x L (PKG)	Architecture	Input type	Multi-channel configuration	Reference mode	Features	Input range (Max) (V)	Input range (Min) (V)	Analog voltage AVDD (Min) (V)	Analog voltage AVDD (Max) (V)	Digital supply (Min) (V)	Digital supply (Max) (V)	Rating
ADS1262	Order now	32	38	10	SPI	-40 to 125	TSSOP \| 28	7.83 \| 1ku	27	28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP \| 28)	Delta-Sigma	Differential Single-Ended	Multiplexed	Ext Int	50/60 Hz Rejection Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor	2.5 5	-2.5 0	4.75	5.25	2.7	5.25	Catalog
ADS1220	Order now	24	2	4	SPI	-40 to 125	TSSOP \| 16 VQFN \| 16	3.48 \| 1ku	1.4	16TSSOP: 22 mm2: 4.4 x 5 (TSSOP \| 16) 16VQFN: 12 mm2: 3.5 x 3.5 (VQFN \| 16)	Delta-Sigma	Differential Single-Ended	Multiplexed	Ext Int Supply	50/60 Hz Rejection Excitation Current Sources (iDACs) Oscillator PGA Temp Sensor	2.85 5.6	-2.85 0	2.3	5.5	2.3	5.5	Catalog
ADS1248	Order now	24	2	8	SPI	-40 to 125	TSSOP \| 28	4.44 \| 1ku	2.3	28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP \| 28)	Delta-Sigma	Differential Single-Ended	Multiplexed	Ext Int	50/60 Hz Rejection Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor	2.125 4.25	-2.125 0	2.7	5.25	2.7	5.25	Catalog
ADS124S06	Order now	24	4	6	SPI	-50 to 125	TQFP \| 32 VQFN \| 32	3.92 \| 1ku	1.75	32TQFP: 49 mm2: 7 x 7 (TQFP \| 32) 32VQFN: 25 mm2: 5 x 5 (VQFN \| 32)	Delta-Sigma	Differential Single-Ended	Multiplexed	Ext Int	50/60 Hz Rejection Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor	2.625 5.25	-2.625 0	2.7	5.25

ADS1262 ACTIVE This product has been released to the market and is available for purchase. For some products, newer alternatives may be available. 32-bit 38-kSPS 10-ch delta-sigma ADC with PGA and voltage reference for factory automation

Description

Features

Parametrics

ADS1262
ACTIVE

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

32-bit 38-kSPS 10-ch delta-sigma ADC with PGA and voltage reference for factory automation