MAX1020 Datasheet, PDF (17/47 Pages) Maxim Integrated Products – 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Pin Description (continued)
MAX1020/ MAX1022/ MAX1057/
MAX1021 MAX1023 MAX1058
NAME
FUNCTION
26
26
27–31, 34
—
35
—
Reference 1 Input. Reference voltage; leave unconnected to use the
internal reference (2.5V for the MAX1021/MAX1023/MAX1057 or 4.096V
35
REF1
for the 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.
—
AIN0–AIN5 Analog Inputs
Reference 2 Input/Analog-Input Channel 6. See Table 5 for details on
—
REF2/AIN6 programming the setup register. REF2 is the negative reference in the
ADC external differential reference.
36
—
—
CNVST/AIN7 ^{Active-Low Conversion-Start Input/Analog Input 7. See Table 5 for details}
on programming the setup register.
—
1
—
CNVST/AIN11
Active-Low Conversion-Start Input/Analog Input 11. See Table 5 for
details on programming the setup register.
23, 25,
—
27–31,
—
33, 34, 35
AIN0–AIN9 Analog Inputs
Reference 2 Input/Analog-Input Channel 10. See Table 5 for details on
—
36
—
REF2/AIN10 programming the setup register. REF2 is the negative reference in the
ADC external differential reference.
—
—
1
CNVST/AIN15 ^{Active-Low Conversion-Start Input/Analog Input 15. See Table 5 for}
details on programming the setup register.
—
—
2, 3, 5, 6 GPIOA0–GPIOA3 General-Purpose I/O A0–A3. GPIOA0–GPIOA3 can sink and source 15mA.
—
—
16, 17, _{GPIOB0–GPIOB3} General-Purpose I/O B0–B3. GPIOB0–GPIOB3 can sink 4mA and
20, 21
source 2mA.
—
—
29–32 GPIOC0–GPIOC3 ^{General-Purpose I/O C0–C3. GPIOC0–GPIOC3 can sink 4mA and}
source 2mA.
—
—
33, 34,
AIN0–AIN13 Analog Inputs
36–47
Reference 2 Input/Analog-Input Channel 14. See Table 5 for details on
—
—
48
REF2/AIN14 programming the setup register. REF2 is the negative reference in the
ADC external differential reference.
—
—
—
EP
Exposed Paddle. Must be externally connected to AGND. Do not use as
a ground connect.
______________________________________________________________________________________ 17