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ADS1296 Datasheet(PDF) 3 Page - Texas Instruments

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Part # ADS1296
Description  Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS1296 Datasheet(HTML) 3 Page - Texas Instruments

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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
DC input impedance
Current source lead-off detection
500
M
Pull-up resistor lead-off detection
10
M
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
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