MAX1220 Datasheet, PDF (6/47 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
ELECTRICAL CHARACTERISTICS (continued)
(AV_DD = DV_DD = 2.7V to 3.6V (MAX1257), external reference V_REF = 2.5V (MAX1257), AV_DD = 4.75V to 5.25V, DV_DD = 2.7V to AV_DD
(MAX1220/MAX1258), external reference V_REF = 4.096V (MAX1220/MAX1258), f_CLK = 3.6MHz (50% duty cycle), T_A = -40°C to +85°C,
unless otherwise noted. Typical values are at AV_DD = DV_DD = 3V (MAX1257), AV_DD = DV_DD = 5V (MAX1220/MAX1258), T_A = +25°C.
Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
DIGITAL OUTPUT (EOC) (Note 14)
CONDITIONS
Output-Voltage Low
V_OL I_SINK = 2mA
Output-Voltage High
V_OH I_SOURCE = 2mA
Tri-State Leakage Current
Tri-State Output Capacitance
C_OUT
DIGITAL OUTPUTS (GPIO_) (Note 14)
GPIOB_, GPIOC_ Output-
Voltage Low
GPIOB_, GPIOC_ Output-
Voltage High
GPIOA_ Output-Voltage Low
I_SINK = 2mA
I_SINK = 4mA
I_SOURCE = 2mA
I_SINK = 15mA
GPIOA_ Output-Voltage High
I_SOURCE = 15mA
Tri-State Leakage Current
Tri-State Output Capacitance
C_OUT
POWER REQUIREMENTS (Note 15)
Digital Positive-Supply Voltage
DV_DD
Digital Positive-Supply Current
DI_DD
Analog Positive-Supply Voltage AV_DD
Analog Positive-Supply Current
A_IDD
REF1 Positive-Supply Rejection PSRR
DAC Positive-Supply Rejection
PSRD
ADC Positive-Supply Rejection
PSRA
Idle, all blocks shut down
Only ADC on, external reference
MAX1257
MAX1220/MAX1258
Idle, all blocks shut down
Only ADC on,
f_SAMPLE = 225ksps
external reference _{fSAMPLE = 100ksps}
All DACs on, no load, internal reference
MAX1257, AV_DD = 2.7V
MAX1220/MAX1258, AV_DD = 4.75V
Output ^{MAX1257, AVDD = 2.7V to 3.6V}
code = _{MAX1220/MAX1258,}
FFFhex _{AVDD = 4.75V to 5.25V}
Full-
scale
input
MAX1257, AV_DD = 2.7V to 3.6V
MAX1220/MAX1258,
AV_DD = 4.75V to 5.25V
MIN
DV_DD -
0.5
DV_DD -
0.5
DV_DD -
0.8
2.7
2.7
4.75
TYP
15
15
0.2
1
0.2
2.8
2.6
1.5
-77
-80
±0.1
±0.1
±0.06
±0.06
MAX
0.4
±10
0.4
0.8
0.8
±10
AV_DD
4
3.6
5.25
2
4.2
4
±0.5
±0.5
±0.5
±0.5
UNITS
V
V
µA
pF
V
V
V
V
µA
pF
V
µA
mA
V
µA
mA
dB
mV
mV
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