MAX1220_12 Datasheet, PDF (15/43 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)
(V_AVDD = V_DVDD = 3V (MAX1257), external V_REF = 2.5V (MAX1257), V_AVDD = V_DVDD = 5V (MAX1220/MAX1258), external V_REF =
4.096V (MAX1220/MAX1258), 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.)
DAC DIGITAL FEEDTHROUGH R_LOAD = 10kΩ,
C_LOAD = 100pF, CS = HIGH, DIN = LOW
MAX1220 toc55
DAC DIGITAL FEEDTHROUGH R_LOAD = 10kΩ,
C_LOAD = 100pF, CS = HIGH, DIN = LOW
MAX1220 toc56
NEGATIVE FULL-SCALE SETTLING TIME
R_LOAD = 10kΩ, C_LOAD = 100pF
MAX1220 toc57
MAX1257
SCLK
1V/div
SCLK
2V/div
V_{OUT_}
1V/div
MAX1257
200ns/div
V_{OUT_}
100mV/div
AC-COUPLED
MAX1220/MAX1258
200ns/div
V_{OUT_}
100mV/div
AC-COUPLED
1µs/div
V_LDAC
1V/div
NEGATIVE FULL-SCALE SETTLING TIME
R_LOAD = 10kΩ, C_LOAD = 100pF
MAX1220 toc58
MAX1220/MAX1258
2µs/div
V_LDAC
2V/div
V_{OUT_}
2V/div
POSITIVE FULL-SCALE SETTLING TIME
R_LOAD = 10kΩ, C_LOAD = 100pF
MAX1220 toc59
MAX1257
V_{OUT_}
1V/div
1µs/div
V_LDAC
1V/div
POSITIVE FULL-SCALE SETTLING TIME
R_LOAD = 10kΩ, C_LOAD = 100pF
MAX1220 toc60
V_LDAC
2V/div
V_{OUT_}
2V/div
MAX1220/MAX1258
1µs/div
ADC REFERENCE FEEDTHROUGH
R_LOAD = 10kΩ, C_LOAD = 100pF
MAX1220 toc61
V_REF2
1V/div
ADC REFERENCE FEEDTHROUGH
R_LOAD = 10kΩ, C_LOAD = 100pF
MAX1220 toc62
V_REF2
2V/div
ADC REFERENCE SWITCHING
200µs/div
MAX1257
V_DAC-OUT
10mV/div
AC-COUPLED
MAX1220/MAX1258
ADC REFERENCE SWITCHING
V_DAC-OUT
2mV/div
AC-COUPLED
200µs/div
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