MAX1272 Datasheet, PDF (7/20 Pages) Maxim Integrated Products – Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range

Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
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.)
FFT PLOT
0
f_AIN = 10kHz
-20
-40
SUPPLY CURRENT
vs. CONVERSION RATE
2500
V_AIN = 0
STANDBY POWER-DOWN MODE
2000 ^{BETWEEN CONVERSIONS}
-60
1500
-80
EXTERNAL REFERENCE
-100
1000
INTERNAL REFERENCE
-120
500
-140
-160
0
10
20
30
40
50
FREQUENCY (kHz)
0
0.1
1
10
100
CONVERSION RATE (ksps)
OFFSET ERROR vs. TEMPERATURE
10
8
6
4
RNG = 1, BIP = 1
2
0
-2
RNG = 0, BIP = 1
-4
-6 RNG = 1, BIP = 0
RNG = 0, BIP = 0
-8
-10
-40 -15
10
35
60
85
TEMPERATURE (°C)
OFFSET ERROR vs. SUPPLY VOLTAGE
10
8
6
RNG = 0, BIP = 1
4
RNG = 1, BIP = 1
2
0
-2
RNG = 1, BIP = 0
-4
-6
RNG = 0, BIP = 0
-8
-10
4.50
4.75
5.00
5.25
5.50
SUPPLY VOLTAGE (V)
GAIN ERROR vs. TEMPERATURE
10
8
6 ^{RNG = 0, BIP = 0}
4
RNG = 0, BIP = 1
2
0
RNG = 1, BIP = 0
-2
RNG = 1, BIP = 1
-4
-6
-8
-10
-40 -15 10
35
60
85
TEMPERATURE (°C)
GAIN ERROR vs. SUPPLY VOLTAGE
10
8
RNG = 0, BIP = 0
6
RNG = 0, BIP = 1
4
2
0
-2
RNG = 1, BIP = 0
RNG = 1, BIP = 1
-4
-6
-8
-10
4.50
4.75
5.00
5.25
5.50
SUPPLY VOLTAGE (V)
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