MAX11270 Datasheet, PDF (10/46 Pages) Maxim Integrated Products – Integrated PGA

MAX11270
24-Bit, 10mW, 130dB SNR, 64ksps Delta-Sigma
ADC with Integrated PGA
Typical Operating Characteristics
(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.)
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-50
ACTIVE CURRENT
vs. TEMPERATURE
toc01
BYPASS MODE
I_{AVDD_ACT}
SINC I_{DVDD_ACT}
0
50
100
150
TEMPERATURE (ºC)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-50
INTERNAL OSCILLATOR
FREQUENCY VARIATION
vs. TEMPERATURE
toc04
0
50
100
150
TEMPERATURE (ºC)
1000.00
100.00
STANDBY CURRENT
vs. TEMPERATURE
toc02
I_{DVDD_STBY}
10.00
1.00
-50
0.25
0.20
0.15
0.10
0.05
0.00
-0.05
-0.10
-0.15
-0.20
-0.25
1.00
I_{AVDD_STBY}
0
50
100
150
TEMPERATURE (ºC)
INTERNAL OSCILLATOR
FREQUENCY VARIATION
vs. DVDD
toc05
2.00
3.00
4.00
5.00
V_DVDD (V)
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
-50
SLEEP CURRENT
vs. TEMPERATURE
toc03
I_{AVDD_SLEEP}
I_{DVDD_SLEEP}
0
50
100
150
TEMPERATURE (ºC)
NOISE vs. COMMON-MODE VOLTAGE
6
toc06
BYPASS MODE
SINC FILTER
5
4
3
0
1
2
3
4
COMMON-MODE VOLTAGE (V)
NOISE vs. V_REF
10
BYPASS MODE
9 ^{SHORTED INPUTS}
8
7
6
5
4
3
2
1
2
3
V_REFP - V_REFN (V)
toc06b
4
8.0
7.0
6.0
5.0
4.0
3.0
2.0
-50
NOISE vs. TEMPERATURE
toc07
BYPASS MODE
0
50
100
150
TEMPERATURE (ºC)
1ksps NOISE HISTOGRAM
100
toc08
BYPASS MODE
90 SINC FILTER
SHORTED INPUTS
80
70
60
50
40
30
20
10
0
-10 -8 -6 -4 -2 0 2 4 6 8 10 12
OUTPUT VOLTAGE (µV)
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