Datasheet

MAX1020/MAX1022/MAX1057/MAX1058
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
12 ______________________________________________________________________________________
DAC FULL-SCALE ERROR
vs. REFERENCE VOLTAGE
MAX1020 toc28
REFERENCE VOLTAGE (V)
DAC FULL-SCALE ERROR (LSB)
2.0 2.51.50.5 1.0
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
03.0
MAX1057
DAC FULL-SCALE ERROR
vs. LOAD CURRENT
MAX1020 toc29
LOAD CURRENT (mA)
DAC FULL-SCALE ERROR (LSB)
252015105
-2
-3
-1
0
1
-4
030
MAX1020/MAX1022/MAX1058
DAC FULL-SCALE ERROR
vs. LOAD CURRENT
MAX1020 toc30
LOAD CURRENT (mA)
DAC FULL-SCALE ERROR (LSB)
2.52.01.51.00.5
-2
-1
0
1
-4
-3
0 3.0
MAX1057
4.12
4.11
4.10
4.09
4.08
-40 10-15 356085
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1020 toc31
TEMPERATURE (
°
C)
INTERNAL REFERENCE VOLTAGE (V)
MAX1020/MAX1022/MAX1058
2.52
2.51
2.50
2.49
2.48
-40 10-15 35 60 85
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1020 toc32
TEMPERATURE (
°
C)
INTERNAL REFERENCE VOLTAGE (V)
MAX1057
24.84
24.88
24.86
24.92
24.90
24.94
24.96
4.750 5.0004.875 5.125 5.250
ADC REFERENCE SUPPLY CURRENT
vs. ANALOG SUPPLY VOLTAGE
MAX1020 toc33
SUPPLY VOLTAGE (V)
ADC REFERENCE SUPPLY CURRENT (µA)
MAX1020/MAX1022/MAX1058
25.1
25.0
24.9
24.8
24.7
2.7 3.33.0 3.6
ADC REFERENCE SUPPLY CURRENT
vs. ANALOG SUPPLY VOLTAGE
MAX1020 toc34
SUPPLY VOLTAGE (V)
ADC REFERENCE SUPPLY CURRENT (µA)
40.5
40.6
40.8
40.7
40.9
41.0
-40 10-15 35 60 85
ADC REFERENCE SUPPLY CURRENT
vs. TEMPERATURE
MAX1020 toc35
TEMPERATURE (°C)
ADC REFERENCE SUPPLY CURRENT (µA)
MAX1020/MAX1022/MAX1058,
EXTERNAL REFERENCE = 4.096V
25.1
25.0
24.9
24.8
24.7
-40 10-15 35 60 85
ADC REFERENCE SUPPLY CURRENT
vs. TEMPERATURE
MAX1020 toc36
TEMPERATURE (°C)
ADC REFERENCE SUPPLY CURRENT (µA)
MAX1057, EXTERNAL REFERENCE = 2.5V
Typical Operating Characteristics (continued)
(V
AVDD
= V
DVDD
= 3V (MAX1057), external V
REF
= 2.5V (MAX1057), V
AVDD
= V
DVDD
= 5V (MAX1020/MAX1022/MAX1058), external
V
REF
= 4.096V (MAX1020/MAX1022/MAX1058), f
CLK
= 3.6MHz (50% duty cycle), f
SAMPLE
= 225ksps, C
LOAD
= 50pF, 0.1µF capaci-
tor at REF, T
A
= +25°C, unless otherwise noted.)