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MAX1020_12 Datasheet, PDF (17/44 Pages) Maxim Integrated Products – 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports | |||
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10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Pin Description (continued)
MAX1020
MAX1022
MAX1057/
MAX1058
NAME
FUNCTION
26
26
27â31, 34
â
35
â
Reference 1 Input. Reference voltage; leave unconnected to use the
internal reference (2.5V for the MAX1057 or 4.096V for the
35
REF1
MAX1020/MAX1022/MAX1058). REF1 is the positive reference in ADC
external differential reference mode. Bypass REF1 to AGND with a 0.1µF
capacitor in external reference mode only. See the ADC/DAC References
section.
â
AIN0âAIN5 Analog Inputs
Reference 2 Input/Analog-Input Channel 6. See Table 5 for details on
â
REF2/AIN6 programming the setup register. REF2 is the negative reference in the
ADC external differential reference.
36
â
â
CNVST/AIN7 Active-Low Conversion-Start Input/Analog Input 7. See Table 5 for details
on programming the setup register.
â
1
â
CNVST/AIN11
Active-Low Conversion-Start Input/Analog Input 11. See Table 5 for
details on programming the setup register.
23, 25,
â
27â31,
â
33, 34, 35
AIN0âAIN9 Analog Inputs
Reference 2 Input/Analog-Input Channel 10. See Table 5 for details on
â
36
â
REF2/AIN10 programming the setup register. REF2 is the negative reference in the
ADC external differential reference.
â
â
1
CNVST/AIN15 Active-Low Conversion-Start Input/Analog Input 15. See Table 5 for
details on programming the setup register.
â
â
2, 3, 5, 6 GPIOA0âGPIOA3 General-Purpose I/O A0âA3. GPIOA0âGPIOA3 can sink and source 15mA.
â
â
16, 17, GPIOB0âGPIOB3 General-Purpose I/O B0âB3. GPIOB0âGPIOB3 can sink 4mA and
20, 21
source 2mA.
â
â
29â32 GPIOC0âGPIOC3 General-Purpose I/O C0âC3. GPIOC0âGPIOC3 can sink 4mA and
source 2mA.
â
â
33, 34,
AIN0âAIN13 Analog Inputs
36â47
Reference 2 Input/Analog-Input Channel 14. See Table 5 for details on
â
â
48
REF2/AIN14 programming the setup register. REF2 is the negative reference in the
ADC external differential reference.
â
â
â
EP
Exposed Paddle. Must be externally connected to AGND. Do not use as
a ground connect.
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