Datasheet

MAX146/MAX147
+2.7V, Low-Power, 8-Channel,
Serial 12-Bit ADCs
6 _______________________________________________________________________________________
2.00
0.50
2.25 2.75
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
1.75
1.25
1.50
1.00
0.75
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
3.75 5.253.25 4.25 4.75
MAX146/47-04
R
L
= ∞
CODE = 101010100000
C
LOAD
= 50pF
MAX147
MAX146
C
LOAD
= 20pF
3.5
3.0
0
2.25 2.75
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.5
2.0
1.5
1.0
0.5
V
DD
(V)
SHUTDOWN SUPPLY CURRENT (µA)
3.75 5.253.25 4.25 4.75
MAX146/47-05
FULL POWER-DOWN
2.5020
2.4990
2.25 2.75
INTERNAL REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
2.5015
2.5005
2.5010
2.5000
2.4995
V
DD
(V)
VREF (V)
3.75 5.253.25 4.25 4.75
MAX146/47-06
0.8
0.9
1.0
1.1
1.2
1.3
-60 -20 20 60 100 140
SUPPLY CURRENT vs. TEMPERATURE
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
MAX146/47-07
MAX147
MAX146
R
LOAD
= ∞
CODE = 101010100000
0 10203040506070
FFT PLOT
FREQUENCY (kHz)
AMPLITUDE (dB)
-120
-100
-80
-60
-40
-20
0
20
MAX146/47-10
V
DD
= 2.7V
f
IN
= 10kHz
f
SAMPLE
= 133kHz
0
0.4
0.8
1.2
1.6
2.0
-60 -20 20 60 100 140
SHUTDOWN CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
MAX1247-08
2.494
2.495
2.496
2.497
2.498
2.499
2.500
2.501
-60 -20 20 60 100 140
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
TEMPERATURE (°C)
VREF (V)
MAX146/47-09
V
DD
= 2.7V
V
DD
= 3.6V
11.0
11.2
11.4
11.6
11.8
12.0
1 10 100
EFFECTIVE NUMBER OF BITS
vs. FREQUENCY
MAX146/47-11
FREQUENCY (kHz)
ENOB
V
DD
= 2.7V
Typical Operating Characteristics (continued)
(V
DD
= 3.0V, VREF = 2.5V, f
SCLK
= 2.0MHz, C
LOAD
= 20pF, T
A
= +25°C, unless otherwise noted.)