Datasheet

6
®
ADS1286
4096 POINT FFT
0
–25
–50
–75
–100
–125
Magnitude (dB)
0246
Frequency (kHz)
TYPICAL PERFORMANCE CURVES (CONT)
At T
A
= +25, V
CC
= +5V, V
REF
= +5V, f
SAMPLE
= 12.5kHz, f
CLK
= 16 • f
SAMPLE
, unless otherwise specified.
PEAK-TO-PEAK NOISE vs REFERENCE VOLTAGE
10
9
8
7
6
5
4
3
2
1
0
Peak-to-Peak Noise (LSB)
0.1 1 10
Reference Voltage (V)
POWER SUPPLY REJECTION vs RIPPLE FREQUENCY
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
Power Supply Rejection (dB)
1 10 100 1000 10000
Ripple Frequency (kHz)
V
RIPPLE
= 20mV
CHANGE GAIN vs TEMPERATURE
0.15
0.1
0.05
0
–0.05
–0.1
–0.15
Delta from 25°C (LSB)
–55 –40 –25 0 25 70 85
Temperature (°C)
POWER DOWN SUPPLY CURRENT
vs TEMPERATURE
3
2.5
2
1.5
1
0.5
0
Supply Current (µA)
–55 –40 –25 0 25 70 85
Temperature (°C)
SUPPLY CURRENT vs TEMPERATURE
400
350
300
250
200
150
100
Supply Current (µA)
–55 –40 –25 0 25 70 85
Temperature (°C)
f
SAMPLE
= 1.6kHz
f
SAMPLE
= 12.5kHz