Datasheet

ADS1240, 1241
13
SBAS173F
www.ti.com
FIGURE 6. Filter Frequency Responses.
DATA –3dB
OUTPUT RATE BANDWIDTH f
IN
= 50 ± 0.3Hz f
IN
= 60 ± 0.3Hz f
IN
= 50 ± 1Hz f
IN
= 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 8040 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 8040 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 f
OSC
= 4.9152MHz, SPEED = 1
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
020 8040 60 100 120 140 160 180 200
Gain (dB)
ATTENUATION