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ADS1262 Datasheet(PDF) 1 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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ADS1262 Datasheet(HTML) 1 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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1 / 134 page  Time (s) 0 1 2 3 4 5 6 7 8 9 10 -0.25 -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 0.25 D017 Input Range = H78 mV Data Rate = 20 SPS Noise = 0.16 2VP-P 32-Bit ûADC PGA Input Mux Digital Filter Serial Interface and Control CS DOUT/DRDY SCLK DRDY START Clock Mux XTAL2 XTAL1/CLKIN REFOUT Ref Alarm Signal Alarm Buf AIN0 AIN1 AIN2 AINCOM GPIO Level Shift Temp Sensor ADS1262 ADS1263 +5 V DVDD DGND Ref Mux 2.5-V Ref AIN3 AIN4 AIN5 AIN6 AIN7 AIN8 AIN9 PGA ADS1263 Only Digital Filter Dual Sensor Excitation Test V Internal Oscillator 24-Bit ûADC RESET/PWDN DIN AVSS AVDD +Exc ±Exc ±Sig +Sig ±Sen +Sen Sensor Test PGA Pt 100 Bridge +3.3 V Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADS1262, ADS1263 SBAS661B – FEBRUARY 2015 – REVISED JULY 2015 ADS126x 32-Bit, Precision, 38-kSPS, Analog-to-Digital Converter (ADC) with Programmable Gain Amplifier (PGA) and Voltage Reference 1 Features 3 Description The ADS1262 and ADS1263 are low-noise, low-drift, 1 • Precision, 32-bit, ΔΣ ADC 38.4-kSPS, delta-sigma ( ΔΣ) ADCs with an integrated • Auxiliary 24-Bit, ΔΣ ADC (ADS1263) PGA, reference, and internal fault monitors. The • Data Rates: 2.5 SPS to 38400 SPS ADS1263 integrates an auxiliary, 24-bit, ΔΣ ADC intended for background measurements. The sensor- • Differential Input, CMOS PGA ready ADCs provide complete, high-accuracy, one- • 11 Multifunction Analog Inputs chip measurement solutions for the most-demanding • High-Accuracy Architecture sensor applications, including weigh scales, strain- gauge sensors, thermocouples, and resistance – Offset Drift: 1 nV/°C temperature devices (RTD). – Gain Drift: 0.5 ppm/°C The ADCs are comprised of a low-noise, CMOS PGA – Noise: 7 nVRMS (2.5 SPS, Gain = 32) (gains 1 to 32), a ΔΣ modulator, followed by a – Linearity: 3 ppm programmable digital filter. The flexible analog front- • 2.5-V Internal Voltage Reference end (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement. – Temperature Drift: 2 ppm/°C • 50-Hz and 60-Hz Rejection A single-cycle settling digital filter maximizes multiple- input conversion throughput, while providing 130-dB • Single-Cycle Settled Conversions rejection of 50-Hz and 60-Hz line cycle interference. • Dual Sensor Excitation Current Sources The ADS1262 and ADS1263 are pin and functional • Internal Fault Monitors compatible. These devices are available in a 28-pin • Internal ADC Test Signal TSSOP package and are fully specified over the • 8 General-Purpose Input/Outputs –40°C to +125°C temperature range. 2 Applications Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) • High-Resolution PLCs ADS1262 • Temperature, Pressure Measurement TSSOP (28) 9.70 mm × 4.40 mm ADS1263 • Weigh Scales and Strain-Gauge Digitizers (1) For all available packages, see the package option addendum • Panel Meters, Chart Recorders at the end of the data sheet. • Analytical Instrumentation Temperature Compensated Bridge Measurement ADC Conversion Noise 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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