User guide

FFT PLOT
MAX1272/73 toc11
FREQUENCY (kHz)
AMPLITUDE (dB)
40302010
0
-160
050
-140
-120
-100
-80
-60
-40
-20
f
AIN
= 10kHz
SUPPLY CURRENT
vs. CONVERSION RATE
MAX1272/73 toc12
CONVERSION RATE (ksps)
SUPPLY CURRENT (µA)
10
1
500
1000
1500
2000
2500
0
0.1 100
V
AIN
= 0
STANDBY POWER-DOWN MODE
BETWEEN CONVERSIONS
EXTERNAL REFERENCE
INTERNAL REFERENCE
MAX1272/MAX1273
Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
_______________________________________________________________________________________ 7
OFFSET ERROR vs. TEMPERATURE
MAX1272/73 toc13
TEMPERATURE (°C)
OFFSET ERROR (LSB)
603510-15
-8
-6
-4
-2
0
2
4
6
8
10
-10
-40 85
RNG = 1, BIP = 1
RNG = 1, BIP = 0
RNG = 0, BIP = 1
RNG = 0, BIP = 0
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX1272/73 toc14
SUPPLY VOLTAGE (V)
OFFSET ERROR (LSB)
5.255.004.75
-8
-6
-4
-2
0
2
4
6
8
10
-10
4.50 5.50
RNG = 0, BIP = 1
RNG = 1, BIP = 1
RNG = 0, BIP = 0
RNG = 1, BIP = 0
GAIN ERROR vs. TEMPERATURE
MAX1272/73 toc15
TEMPERATURE (°C)
GAIN ERROR (LSB)
603510-15
-8
-6
-4
-2
0
2
4
6
8
10
-10
-40 85
RNG = 1, BIP = 0
RNG = 1, BIP = 1
RNG = 0, BIP = 1
RNG = 0, BIP = 0
GAIN ERROR vs. SUPPLY VOLTAGE
MAX1272/73 toc16
SUPPLY VOLTAGE (V)
GAIN ERROR (LSB)
5.255.004.75
-8
-6
-4
-2
0
2
4
6
8
10
-10
4.50 5.50
RNG = 0, BIP = 1
RNG = 0, BIP = 0
RNG = 1, BIP = 0
RNG = 1, BIP = 1
Typical Operating Characteristics (continued)
(Typical operating circuit, BIP = RNG = 1, V
DD
= 5V, external reference mode, V
REF
= 4.096V, C
REF
= 1.0µF, f
SCLK
= 1.4MHz,
50% duty cycle, 87ksps, T
A
= +25°C, unless otherwise noted.)