ADS1299
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SBAS499A –JULY 2012–REVISED AUGUST 2012
TYPICAL CHARACTERISTICS
All plots are at TA = +25°C, AVDD = 5 V, AVSS = 0 V, DVDD = 3.3 V, internal VREFP = 4.5 V, VREFN = AVSS, external
clock = 2.048 MHz, data rate = 250 SPS, and gain = 12, unless otherwise noted.
INPUT-REFERRED NOISE
NOISE HISTOGRAM
0.5
0.4
800
700
600
500
400
300
200
100
0
Gain = 24
Gain = 24
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
1
2
3
4
5
6
7
8
9
10
Time (s)
G003
Input−Referred Noise (µV)
G004
Figure 3.
Figure 4.
COMMON-MODE REJECTION RATIO vs FREQUENCY
LEAKAGE CURRENT vs INPUT VOLTAGE
400
350
300
250
200
150
100
50
−100
Data Rate = 4 kSPS
Data Rate = 250 SPS to 8 kSPS
Data Rate = 16 kSPS
AIN = AVDD − 0.3 V to AVSS + 0.3 V
−105
−110
−115
−120
−125
−130
−135
Gain = 1
Gain = 2
Gain = 4
Gain = 6
Gain = 8
Gain = 12
Gain = 24
0
10
100
1000
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Frequency (Hz)
Input Voltage (V)
G005
G006
Figure 5.
Figure 6.
LEAKAGE CURRENT vs TEMPERATURE
PSRR vs FREQUENCY
200
175
150
125
100
75
120
115
110
105
100
95
G = 1
G = 2
G = 4
G = 6
G = 8
G = 12
G = 24
50
90
Input Voltage = 2.5 V
Data Rate = 250 SPS to 8 kSPS
25
85
0
80
−40 −30 −20 −10
0
10 20 30 40 50 60 70 80 90
10
100
1000
Temperature (°C)
Frequency (Hz)
G007
G008
Figure 7.
Figure 8.
Copyright © 2012, Texas Instruments Incorporated
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