MAX127 Maxim, MAX127 Datasheet - Page 8

• Manufacturer Part Number: MAX127
• Description: Multirange / +5V / 12-Bit DAS with 2-Wire Serial Interface
• Manufacturer: Maxim

Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
8
3, 9, 22, 24
_______________________________________________________________________________________
6, 8, 10
13–20
DIP
1, 2
11
12
21
23
4
5
7
PIN
4, 7, 8, 11, 22,
24, 25, 28
15–21, 23
6, 10, 12
SSOP
1, 2
13
14
26
27
3
5
9
A0, A2, A1
CH0–CH7
REFADJ
NAME
DGND
AGND
SHDN
N.C.
SDA
V
SCL
REF
DD
+5V Supply. Bypass with a 0.1µF capacitor to AGND.
No Connect. No internal connection.
Digital Ground
Serial Clock Input
Address Select Inputs
Open-Drain Serial Data I/O. Input data is clocked in on the rising edge of SCL,
and output data is clocked out on the falling edge of SCL. External pull-up
resistor required.
Shutdown Input. When low, device is in full power-down (FULLPD) mode.
Connect high for normal operation.
Analog Ground
Analog Input Channels
Bandgap Voltage-Reference Output/External Adjust Pin. Bypass with a 0.01µF
capacitor to AGND. Connect to V
Reference Buffer Output/ADC Reference Input. In internal reference mode, the
reference buffer provides a 4.096V nominal output, externally adjustable at
REFADJ. In external reference mode, disable the internal reference by pulling
REFADJ to V
DD
and applying the external reference to REF.
DD
FUNCTION
when using an external reference at REF.
Pin Description