Electronic Components Datasheet Search |
|
ADS1291 Datasheet(PDF) 3 Page - Texas Instruments |
|
ADS1291 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 75 page ADS1291 ADS1292 ADS1292R www.ti.com SBAS502B – DECEMBER 2011 – REVISED SEPTEMBER 2012 ELECTRICAL CHARACTERISTICS Minimum and maximum specifications apply from –40°C to +85°C. Typical specifications are at +25°C. All specifications are at DVDD = 1.8 V, AVDD – AVSS = 3 V (1), V REF = 2.42 V, external fCLK = 512 kHz, data rate = 500 SPS, CFILTER = 4.7 nF (2), and gain = 6, unless otherwise noted. ADS1291, ADS1292, ADS1292R PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUTS Full-scale differential input voltage ±VREF / gain V (AINP – AINN) 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 = 1.5 V ±200 pA Input bias current (PGA chop = 8 kHz) TA = –40°C to +85°C, input = 1.5 V ±1 nA Chop rates other than 8 kHz See Pace Detect section No pull-up or pull-down current source 1000 M Ω Current source lead-off detection (nA), 500 M Ω DC input impedance AVSS + 0.3 V < AIN < AVDD – 0.3 V Current source lead-off detection (µA), 100 M Ω AVSS + 0.6 V < AIN < AVDD – 0.6 V PGA PERFORMANCE Gain settings 1, 2, 3, 4, 6, 8, 12 With a 4.7-nF capacitor on PGA output Bandwidth (see PGA Settings and Input Range section 8.5 kHz for details) ADC PERFORMANCE Resolution 24 Bits Data rate fCLK = 512 kHz 125 8000 SPS CHANNEL PERFORMANCE (DC Performance) Gain = 6(3), 10 seconds of data 8 μVPP Gain = 6, 256 points, 0.5 seconds of data 8 11 μVPP Input-referred noise Gain settings other than 6, See Noise Measurements section data rates other than 500 SPS Integral nonlinearity Full-scale with gain = 6, best fit 2 ppm Offset error ±100 μV Offset error drift 2 μV/°C Offset error with calibration 15 μV Gain error Excluding voltage reference error ±0.1 ±0.2 % of FS Gain drift Excluding voltage reference drift 2 ppm/°C Gain match between channels 0.2 % of FS CHANNEL PERFORMANCE (AC performance) CMRR Common-mode rejection ratio fCM = 50 Hz and 60 Hz (4) –105 –120 dB PSRR Power-supply rejection ratio fPS = 50 Hz and 60 Hz 90 dB Crosstalk fIN = 50 Hz and 60 Hz –120 dB SNR Signal-to-noise ratio fIN = 10 Hz input, gain = 6 107 dB 10 Hz, –0.5 dBFs, CFILTER = 4.7nF –104 dB 100 Hz, –0.5 dBFs, CFILTER = 4.7nF –95 dB THD Total harmonic distortion ADS1292R channel 1, 10 Hz, –0.5 dBFS, –82 dB CFILTER = 47 nF (1) Performance is applicable for 5-V operation as well. Production testing for limits is performed at 3 V. (2) CFILTER is the capacitor accross the PGA outputs; see the PGA Settings and Input Range section for details. (3) 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. (4) CMRR is measured with a common-mode signal of AVSS + 0.3 V to AVDD – 0.3 V. The values indicated are the minimum of the two channels. Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: ADS1291 ADS1292 ADS1292R |
Similar Part No. - ADS1291_14 |
|
Similar Description - ADS1291_14 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |