MAX1040 Datasheet, PDF (17/44 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)
MAX1040
MAX1041
22
26
27–31, 34
35
36
—
—
—
—
—
—
MAX1042
MAX1043
22
26
27–31, 34
35
36
1, 2
24, 25
—
—
—
—
MAX1046
MAX1047
22
26
—
—
—
—
—
27–30
35
36
—
MAX1048
MAX1049
22
26
—
NAME
FUNCTION
RES_SEL
REF1
AIN0–AIN5
Reset Select. Selects DAC wake-up mode. Set RES_SEL low
to wake up the DAC outputs with a 100kΩ resistor to GND or
set RES_SEL high to wake up the DAC outputs with a 100kΩ
resistor to V_REF. Set RES_SEL high to power up the DAC input
register to FFFh. Set RES_SEL low to power up the DAC input
register to 000h.
Reference 1 Input. Reference voltage. Leave unconnected to
use the internal reference (2.5V for the
MAX1041/MAX1043/MAX1047/MAX1049 or 4.096V for the
MAX1040/MAX1042/MAX1046/MAX1048). REF1 is the positive
reference in ADC external differential mode. Bypass REF1 to
AGND with a 0.1µF capacitor in external reference mode only.
See the ADC/DAC References section.
Analog Inputs
—
—
1, 2
24, 25
27–30
35
Reference 2 Input/Analog Input Channel 6. See Table 5 for
REF2/AIN6 details on programming the setup register. REF2 is the negative
reference in the ADC external differential reference mode.
CNVST/ Active-Low Conversion Start Input/Analog Input 7. See Table 5
AIN7 for details on programming the setup register.
GPIOA0, General-Purpose I/O A0, A1. GPIOA0, GPIOA1 can sink and
GPIOA1 source 15mA.
GPIOC0, General-Purpose I/O C0, C1. GPIOC0, GPIOC1 can sink 4mA
GPIOC1 and source 2mA.
AIN0–AIN3 Analog Inputs
REF2
Reference 2 Input. See Table 5 for details on programming the
setup register. REF2 is the negative reference in the ADC
external differential reference mode.
36
CNVST ^{Active-Low Conversion Start Input. See Table 5 details on}
programming the setup register.
—
EP
Exposed Paddle. Must be externally connected to AGND. Do
not use as a ground connect.
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