MAX1258 Maxim Integrated Products, MAX1258 Datasheet - Page 8

• 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
ELECTRICAL CHARACTERISTICS (continued)
(AV
DV
(50% duty cycle), T
AV
(AV
(MAX1220/MAX1222/MAX1258), external V
= 300ksps, C
8
Note 1: Tested at DV
Note 2: Offset nulled.
Note 3: No bus activity during conversion. Conversion time is defined as the number of conversion clock cycles multiplied by the
Note 4: See Table 5 for reference-mode details.
Note 5: Not production tested. Guaranteed by design.
Note 6: See the ADC/DAC References section.
Note 7: Fast automated test, excludes self-heating effects.
Note 8: Specified over the -40°C to +85°C temperature range.
Note 9: REFSEL[1:0] = 00 or when DACs are not powered up.
Note 10: DAC linearity, gain, and offset measurements are made between codes 115 and 3981.
Note 11: The DAC buffers are guaranteed by design to be stable with a 1nF load.
Note 12: Time required by the DAC output to power up and settle within 1 LSB in the external reference mode.
Note 13: All DAC dynamic specifications are valid for a load of 100pF and 10kΩ.
Note 14: Only one digital output (either DOUT,
Note 15: All digital inputs at either DV
Note 16: See the Reset Register section and Table 9 for details on programming the SLOW bit.
Note 17: Clock mode 11 only.
DD
DD
DD
0.30
0.25
0.20
0.15
0.10
0.05
DD
_______________________________________________________________________________________
0
= DV
= 4.75V to 5.25V (MAX1220/MAX1222/MAX1258), external reference V
4.75
= DV
= DV
MAX1220/MAX1222/MAX1258
clock period.
DD
vs. ANALOG SUPPLY VOLTAGE
DD
DD
4.85
LOAD
= 5V (MAX1220/MAX1222/MAX1258), T
SHUTDOWN CURRENT
= 2.7V to 3.6V (MAX1221/MAX1223/MAX1257), external reference V
= 3V (MAX1221/MAX1223/MAX1257), external V
SUPPLY VOLTAGE (V)
A
= 50pF, 0.1µF capacitor at REF, T
4.95
= -40°C to +85°C, unless otherwise noted. Typical values are at AV
DD
= AV
5.05
DD
5.15
= +3.6V (MAX1221/MAX1223/MAX1257), DV
DD
5.25
or DGND. DV
REF
EOC, or the GPIOs) can be indefinitely shorted to either supply at one time.
= 4.096V (MAX1220/MAX1222/MAX1258), f
0.20
0.18
0.16
0.14
0.12
0.10
A
2.7
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
MAX1221/MAX1223/MAX1257
DD
= +25°C, unless otherwise noted.)
vs. ANALOG SUPPLY VOLTAGE
should not exceed AV
SHUTDOWN CURRENT
SUPPLY VOLTAGE (V)
3.0
REF
= 2.5V (MAX1221/MAX1223/MAX1257), AV
Typical Operating Characteristics
REF
3.3
= 4.096V (MAX1220/MAX1222/MAX1258), f
DD
DD
= AV
REF
.
3.6
DD
= 2.5V (MAX1221/MAX1223/MAX1257), AV
DD
= DV
= +5.25V (MAX1220/MAX1222/MAX1258).
CLK
DD
0.6
0.5
0.4
0.3
0.2
0.1
0
= 4.8MHz (50% duty cycle), f
-40
= 3V (MAX1221/MAX1223/MAX1257),
-15
SHUTDOWN CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
10
DD
35
SCLK
= DV
60
= 4.8MHz
DD
SAMPLE
= 5V
DD
85
=