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ADS1296 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS1296 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 92 page ADS1294, ADS1294R ADS1296, ADS1296R ADS1298, ADS1298R www.ti.com SBAS459J – JANUARY 2010 – REVISED JANUARY 2014 ELECTRICAL CHARACTERISTICS Minimum/maximum specifications apply for all commercial grade (0°C to +70°C) devices and from –40°C to +85°C for industrial grades devices. Typical specifications are at +25°C. All specifications at DVDD = 1.8V, AVDD – AVSS = 3V (1), VREF = 2.4V, external fCLK = 2.048MHz, data rate = 500SPS, High-Resolution mode, and gain = 6, unless otherwise noted. ADS1294, ADS1296, ADS1298 ADS1294R, ADS1296R, ADS1298R PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUTS Full-scale differential input voltage (AINP – AINN) ±VREF/GAIN V See the Input Common-Mode Range Input common-mode range subsection of the PGA Settings and Input Range section Input capacitance 20 pF TA = +25°C, input = 1.5V ±200 pA Input bias current TA = 0°C to +70°C, input = 1.5V ±1 nA TA = –40°C to +85°C, input = 1.5V ±1.2 nA No lead-off 1000 M Ω DC input impedance Current source lead-off detection 500 M Ω Pull-up resistor lead-off detection 10 M Ω PGA PERFORMANCE Gain settings 1, 2, 3, 4, 6, 8, 12 Bandwidth See Table 16 ADC PERFORMANCE Data rates up to 8kSPS, no missing codes 24 Bits Resolution 16kSPS data rate 19 Bits 32kSPS data rate 17 Bits fCLK = 2.048MHz, High-Resolution mode 500 32000 SPS Data rate fCLK = 2.048MHz, Low-Power mode 250 16000 SPS CHANNEL PERFORMANCE DC Performance Gain = 6(2), 10 seconds of data 5 μVPP Gain = 6, 256 points, 0.5 seconds of data 4 7 μVPP Input-referred noise Gain settings other than 6, data rates other See Noise Measurements section than 500SPS Full-scale with gain = 6, best fit 8 ppm Full-scale with gain = 6, best fit, 40 ppm Integral nonlinearity ADS1294R/6R/8R channel 1 –20dBFS with gain = 6, best fit, 8 ppm ADS1294R/6R/8R channel 1 Offset error ±500 µV Offset error drift 2 µV/°C Gain error Excluding voltage reference error ±0.2 ±0.5 % of FS Gain drift Excluding voltage reference drift 5 ppm/°C Gain match between channels 0.3 % of FS (1) Performance is applicable for 5V operation as well. Production testing for limits is performed at 3V. (2) Noise data measured in a 10-second interval. Test not performed in production. Input-referred noise is calculated with input shorted (without electrode resistance) over a 10-second interval. Copyright © 2010–2014, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: ADS1294 ADS1294R ADS1296 ADS1296R ADS1298 ADS1298R |
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