MAX1246 Datasheet, PDF (6/24 Pages) Maxim Integrated Products – +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16

+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
____________________________Typical Operating Characteristics (continued)
(V_DD = 3.0V, VREF = 2.500V, f_SCLK = 2.0MHz, C_LOAD = 20pF, T_A = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.00
R_L = ∞
CODE = 101010100000
1.75
C_LOAD = 50pF
1.50 _MAX1246
1.25
1.00
C_LOAD = 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
V_DD (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
V_DD (V)
MAX1246
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
2.501
2.500
2.499
2.498
V_DD = 3.6V
V_DD = 2.7V
1.0
MAX1247
0.9
R_LOAD = ∞
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
V_DD = 2.7V
0
f_IN = 10k
f_SAMPLE = 133k
-20
-40
-60
-80
-100
EFFECTIVE NUMBER OF BITS
vs. FREQUENCY
12.0
V_DD = 2.7V
11.8
11.6
11.4
11.2
-120
0
10 20 30 40 50 60 70
FREQUENCY (kHz)
11.0
1
10
100
FREQUENCY (kHz)
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