MAX11270 Datasheet, PDF (12/46 Pages) Maxim Integrated Products – Integrated PGA

MAX11270
24-Bit, 10mW, 130dB SNR, 64ksps Delta-Sigma
ADC with Integrated PGA
Typical Operating Characteristics (continued)
(V_AVDD = 3.6V, V_AVSS = 0V, V_DVDD = 2.0V, V_REFP = 2.5V, V_REFN = 0V; f_DATA = 1000sps, External Clock = 8.192MHz; Continuous
conversion mode (SCYCLE = 0); PGA maximum output is 300mV below AVDD and minimum output is 300mV above AVSS,
T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.)
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
0
OUTPUT SPECTRUM
SHORTED INPUTS
toc14A
BYPASS MODE
SINGLE-CYCLE CONTINUOUS
SINC FILTER
100
200
300
400
500
FREQUENCY (Hz)
115
114
113
112
111
110
109
108
107
106
105
-50
SNR
vs. TEMPERATURE
toc15
BYPASS MODE
FULL SCALE = ±3.6V
0
50
100
150
TEMPERATURE (ºC)
120
118
116
114
112
110
108
106
104
102
100
1
SNR vs. VREF
toc15b
BYPASS MODE
SHORTED INPUTS
2
3
4
V_REFP - V_REFN (V)
POSITIVE FULL SCALE
GAIN ERROR HISTOGRAM OF 200 PARTS
50
BYPASS MODE
toc17A
45 AFTER CALIBRATION
40
35
30
25
20
15
10
5
0
-1.4 -1 -0.6 -0.2 0.2 0.6 1 1.4
GAIN ERROR (ppm)
OFFSET HISTOGRAM OF 200 PARTS
35
toc16
BYPASS MODE
AFTER CALIBRATION
30
SHORTED INPUTS
25
20
15
10
5
0
-3.0 -1.0 1.0 3.0 5.0 7.0 9.0 11.0 13.0
OFFSET (nV)
NEGATIVE FULL-SCALE
GAIN ERROR HISTOGRAM OF 200 PARTS
40
toc17B
BYPASS MODE
35
AFTER CALIBRATION
30
25
20
15
10
5
0
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
GAIN ERROR (ppm)
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