ADS1240, 1241
13
SBAS173F
www.ti.com
FIGURE 6. Filter Frequency Responses.
DATA
–3dB
OUTPUT RATE
BANDWIDTH
fIN = 50 ± 0.3Hz
fIN = 60 ± 0.3Hz
fIN = 50 ± 1Hz
fIN = 60 ± 1Hz
15Hz
14.6Hz
–80.8dB
–87.3dB
–68.5dB
–76.1dB
7.5Hz
3.44Hz
–85.9dB
–87.4dB
–71.5dB
–76.2dB
3.75Hz
1.65Hz
–93.8dB
–88.6dB
–86.8dB
–77.3dB
FREQUENCY RESPONSE FROM 45Hz to 65Hz
WHEN f
DATA = 15Hz
Frequency (Hz)
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
Magnitude
(dB)
FREQUENCY RESPONSE FROM 45Hz to 65Hz
WHEN f
DATA = 7.5Hz
Frequency (Hz)
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
Magnitude
(dB)
FREQUENCY RESPONSE FROM 45Hz to 65Hz
WHEN f
DATA = 3.75Hz
Frequency (Hz)
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
Magnitude
(dB)
ADS1240 AND ADS1241
FILTER RESPONSE WHEN f
DATA = 15Hz
Frequency (Hz)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
020
80
40
60
100
120
140
160
180
200
Gain
(dB)
45
50
55
60
65
45
50
55
60
65
45
50
55
60
65
ADS1240 AND ADS1241
FILTER RESPONSE WHEN f
DATA = 7.5Hz
Frequency (Hz)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
020
80
40
60
100
120
140
160
180
200
Gain
(dB)
ADS1240 AND ADS1241
FILTER RESPONSE WHEN f
DATA = 3.75Hz
Frequency (Hz)
f
OSC = 2.4576MHz, SPEED = 0 or fOSC = 4.9152MHz, SPEED = 1
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
020
80
40
60
100
120
140
160
180
200
Gain
(dB)
ATTENUATION