MAX1258 Maxim Integrated Products, MAX1258 Datasheet - Page 14

• Manufacturer Part Number: MAX1258
• Description: Multichannel ADCs/DACs
• Manufacturer: Maxim Integrated Products

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12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
14
(AV
(MAX1220/MAX1222/MAX1258), external V
= 300ksps, C
MAX1220/MAX1222/MAX1258
MAX1221/MAX1223/MAX1257
1500
1200
900
600
300
DYNAMIC RESPONSE FALL TIME
DD
R
R
LOAD
0
______________________________________________________________________________________
LOAD
DAC-TO-DAC CROSSTALK
= DV
0
= 10kΩ, C
= 10kΩ, C
10
DD
LOAD
GPIO OUTPUT VOLTAGE
100µs
1µs
vs. SINK CURRENT
= 3V (MAX1221/MAX1223/MAX1257), external V
SINK CURRENT (mA)
20
LOAD
LOAD
= 50pF, 0.1µF capacitor at REF, T
MAX1221/MAX1223/MAX1257
GPIOB0–B3, C0–C3
= 100pF
= 100pF
30
OUTPUTS
GPIOA0–A3 OUTPUTS
MAX1220 toc52
MAX1220 toc55
40
V
2V/div
V
10mV/div
AC-COUPLED
50
V
1V/div
CS
1V/div
OUTA
OUTB
OUT
60
REF
MAX1221/MAX1223/MAX1257
= 4.096V (MAX1220/MAX1222/MAX1258), f
MAX1220/MAX1222/MAX1258
-0.25
-0.50
-0.75
-1.00
1.00
0.75
0.50
0.25
DYNAMIC RESPONSE RISE TIME
Typical Operating Characteristics (continued)
R
DYNAMIC RESPONSE FALL TIME
R
LOAD
0
LOAD
-40
A
= 10kΩ, C
= +25°C, unless otherwise noted.)
= 10kΩ, C
TEMPERATURE SENSOR ERROR
-15
1µs
vs. TEMPERATURE
1µs
TEMPERATURE (°C)
LOAD
LOAD
10
REF
= 100pF
= 100pF
= 2.5V (MAX1221/MAX1223/MAX1257), AV
MAX1220 toc53
35
MAX1220 toc56
60
V
1V/div
CS
1V/div
CS
2V/div
V
2V/div
OUT
OUT
85
CLK
MAX1220/MAX1222/MAX1258
MAX1221/MAX1223/MAX1257
MAX1220/MAX1222/MAX1258
DYNAMIC RESPONSE RISE TIME
R
R
R
LOAD
MAJOR CARRY TRANSITION
LOAD
LOAD
= 4.8MHz (50% duty cycle), f
DAC-TO-DAC CROSSTALK
= 10kΩ, C
= 10kΩ, C
= 10kΩ, C
100µs
1µs
1µs
LOAD
LOAD
LOAD
= 100pF
= 100pF
= 100pF
DD
MAX1220 toc54
MAX1220 toc57
MAX1220 toc51
= DV
DD
CS
2V/div
V
2V/div
CS
1V/div
V
10mV/div
AC-COUPLED
V
1V/div
V
10mV/div
AC-COUPLED
OUT
OUT
SAMPLE
OUTA
OUTB
= 5V