MAX1221 Datasheet, PDF (13/44 Pages) Maxim Integrated Products – 12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Typical Operating Characteristics (continued)
(AV_DD = DV_DD = 3V external V_REF = 2.5V, f_CLK = 3.6MHz (50% duty cycle), f_SAMPLE = 225ksps, C_LOAD = 50pF, 0.1µF capacitor at
REF, T_A = +25°C, unless otherwise noted.)
GPIO OUTPUT VOLTAGE
vs. SINK CURRENT
1500
GPIOC0, GPIOC1
1200
OUTPUTS
900
600
300
GPIOA0, GPIOA1 OUTPUTS
0
0 10 20 30 40 50 60
SINK CURRENT (mA)
TEMPERATURE SENSOR ERROR
vs. TEMPERATURE
1.00
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
-1.00
-40 -15
10
35
60
85
TEMPERATURE (°C)
DAC-TO-DAC CROSSTALK
(R_LOAD = 10kΩ, C_LOAD = 100pF)
MAX1221 toc40
V_OUTA
1V/div
DAC-TO-DAC CROSSTALK
(R_LOAD = 10kΩ, C_LOAD = 100pF)
MAX1221 toc41
V_OUTA
2V/div
V_OUTB
10mV/div
AC-COUPLED
100μs/div
DYNAMIC RESPONSE RISE TIME
(R_LOAD = 10kΩ, C_LOAD = 100pF)
MAX1221 toc42
V_OUT
1V/div
AV_DD = DV_DD = 5V
EXTERNAL REFERENCE = 4.096V
100μs/div
V_OUTB
10mV/div
AC-COUPLED
DYNAMIC RESPONSE RISE TIME
(R_LOAD = 10kΩ, C_LOAD = 100pF)
MAX1221 toc43
CS
2V/div
1μs/div
CS
1V/div
V_OUT
2V/div
AV_DD = DV_DD = 5V
EXTERNAL REFERENCE = 4.096V
1μs/div
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