MAX1246_07 Datasheet, PDF (7/25 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 = 3V, VREF = 2.5V, f_SCLK = 2MHz, 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
25
20
15
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
EFFECTIVE NUMBER OF BITS
vs. FREQUENCY
12.0
V_DD = 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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