MAX11040_10 Datasheet, PDF (6/32 Pages) Maxim Integrated Products – 24-Bit, 4-Channel, Simultaneous-Sampling,Cascadable,Sigma-Delta ADC

24-Bit, 4-Channel, Simultaneous-Sampling,
Cascadable, Sigma-Delta ADC
Typical Operating Characteristics
(V_AVDD = V_DVDD = 3.3V, f_{XIN CLOCK} = 24.576MHz, f_OUT = 16ksps, V_REFIO = 2.5V (external), C_REFIO = C_REF0 = C_REF1 = C_REF2 =
C_REF3 = 1µF, T_A = +25°C, unless otherwise noted.)
INL vs. DIFFERENTIAL INPUT VOLTAGE
0.005
0.004
0.003
0.002
0.001
0
-0.001
-0.002
-0.003
-0.004
-0.005
-2.5 -1.5 -0.5 0.5 1.5 2.5
DIFFERENTIAL INPUT VOLTAGE (V)
SIGNAL-TO-NOISE RATIO
vs. OUTPUT DATA RATE
130
120
HISTOGRAM OF RMS AMPLITUDE
AT 0.1% FS
500
450
400
350
300
250
200
150
100
50
0
RMS AMPLITUDE (% FS)
FFT vs. FREQUENCY AT FULL SCALE
0
60Hz SINE-WAVE INPUT
-20
-40
MAXIMUM EXPECTED ERROR OF CALCULATED
RMS AMPLITUDE vs. INPUT AMPLITUDE
1
1 MILLION 62.5Hz CYCLES
0.1
0.01
0.001
0.01
0.1
1
10
100
INPUT AMPLITUDE (% FS)
FFT vs. FREQUENCY AT 0.1% FULL SCALE
-40
60Hz SINE-WAVE INPUT
-60
-80
110
-60
-100
100
-80
-120
-100
-140
90
-120
-160
80
-140
-180
0.1
1
10
100
0 1000 2000 3000 4000 5000 6000 7000 8000
0 1000 2000 3000 4000 5000 6000 7000 8000
OUTPUT DATA RATE (ksps)
FREQUENCY (Hz)
FREQUENCY (Hz)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
10
RMS AMPLITUDE
vs. INPUT FREQUENCY
100
1000
INPUT FREQUENCY (Hz)
10,000
0.05
0.04
0.03
0.02
0.01
0
-0.01
-0.02
-0.03
-0.04
-0.05
100
RMS AMPLITUDE GAIN ERROR
vs. OUTPUT DATA RATE
1000
10,000
OUTPUT DATA RATE (Hz)
100,000
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
10
RMS AMPLITUDE
vs. SOURCE RESISTANCE
100
1000 10,000
SOURCE RESISTANCE (Ω)
100,000
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