Datasheet

200
0
-20
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-120
0 400 600
Frequency(Hz)
Magnitude(dB)
800 1000 1200 1400 1600 1800 2000
1
0
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-120
0 2 3
Frequency(kHz)
Magnitude(dB)
4 5 6 7 8 9 10
500
0
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0 1000 1500
Frequency(Hz)
Magnitude(dB)
2000 2500 3000 3500 4000 4500 5000
2
0
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0 4 6
Frequency(kHz)
Magnitude(dB)
8 10 12 14 16 18 20
500
0
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0 1000 1500
Frequency(Hz)
Magnitude(dB)
2000 2500 3000 3500 4000 4500 5000
ADS1246
ADS1247
ADS1248
SBAS426G –AUGUST 2008–REVISED OCTOBER 2011 www.ti.com
Figure 60. Filter Profile with Data Rate = 160SPS Figure 63. Filter Profile with Data Rate = 1kSPS
Figure 61. Filter Profile with Data Rate = 320SPS Figure 64. Filter Profile with Data Rate = 2kSPS
CLOCK SOURCE
The ADS1246/7/8 can use either the internal
oscillator or an external clock. Connect the CLK pin to
DGND before power-on or reset to activate the
internal oscillator. Connecting an external clock to the
CLK pin at any time deactivates the internal oscillator,
with the device then operating on the external clock.
After the device switches to the external clock, it
cannot be switched back to the internal oscillator
without cycling the power supplies or resetting the
device.
Figure 62. Filter Profile with Data Rate = 640SPS
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Product Folder Link(s): ADS1246 ADS1247 ADS1248