MAX1246 Просмотр технического описания (PDF) - Maxim Integrated
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MAX1246 Datasheet PDF : 25 Pages
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+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
____________________________Typical Operating Characteristics (continued)
(VDD = 3V, VREF = 2.5V, fSCLK = 2MHz, CLOAD = 20pF, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.00
RL = ∞
CODE = 101010100000
1.75
CLOAD = 50pF
1.50 MAX1246
1.25
1.00
CLOAD = 20pF
0.75
MAX1247
0.50
2.25 2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
1.3
1.2
MAX1246
1.1
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
4.0
FULL POWER-DOWN
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2.25 2.75 3.25 3.75 4.25 4.75 5.25
VDD (V)
SHUTDOWN CURRENT
vs. TEMPERATURE
2.0
1.6
1.2
2.5020
INTERNAL REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
2.5015
2.5010
2.5005
2.5000
2.4995
2.4990
2.25 2.75 3.25 3.75 4.25 4.75 5.25
VDD (V)
MAX1246
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
2.501
2.500
2.499
2.498
VDD = 3.6V
VDD = 2.7V
1.0
MAX1247
0.9
RLOAD = ∞
CODE = 101010100000
0.8
-60 -20
20
60
100 140
TEMPERATURE (°C)
0.8
0.4
0
-60 -20
20
60 100 140
TEMPERATURE (°C)
2.497
2.496
2.495
2.494
-60 -20
20
60 100 140
TEMPERATURE (°C)
FFT PLOT
20
VDD = 2.7V
0
fIN = 10k
fSAMPLE = 133k
-20
-40
EFFECTIVE NUMBER OF BITS
vs. FREQUENCY
12.0
VDD = 2.7V
11.8
11.6
-60
11.4
-80
11.2
-100
-120
0
10 20 30 40 50 60 70
FREQUENCY (kHz)
11.0
1
10
100
FREQUENCY (kHz)
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