ML2281, ML2282, ML2284, ML2288
PIN DESCRIPTION
NAME
FUNCTION
NAME
FUNCTION
V
Positive supply. 5V ± 10%
DO
Data out. Digital output which contains result
of A/D conversion. The serial data is clocked
out on falling edges of CLK.
CC
DGND
AGND
CH0-7,
Digital ground. 0 volts. All digital inputs and
outputs are referenced to this point.
SARS
CLK
Successive approximation register status.
Digital output which indicates that a
conversion is in progress. When SARS goes
to 1, the sampling window is closed and
conversion begins. When SARS goes to 0,
conversion is completed. When CS = 1, SARS
is in high impedance state.
Analog ground. The negative reference voltage
for A/D converter.
Analog inputs. Digitally selected to be single
V +, V – ended (V ) or; V + or V – of a differential
IN
IN
IN
IN
IN
input. Analog range = GND - V - V
.
IN
CC
COM
Common reference point for analog inputs.
A/D conversion is performed on voltage
difference between analog input and this
common reference point if single-end
conversion is specified.
Clock. Digital input which clocks data in on
DI on rising edges and out on DO on falling
edges. Also used to generate clocks for A/D
conversion.
DI
Data input. Digital input which contains serial
data to program the MUX and channel
assignments.
V
Reference. The positive reference voltage for
A/D converter.
REF
SE
Shift enable. Input controls whether LSB first
bit stream is shifted out on serial output DO.
If SE = 1, MSB first is shifted out only. If SE = 0,
an MSB first bit stream is shifted out, then a
second bit stream with LSB first is shifted out
after end of conversion.
CS
Chip select. Selects the chip for multiplexer
and channel assignment and A/D conversion.
When CS = 1, all digital outputs are in high
impedance state. When CS = 0, normal A./D
conversion takes place.
V+
Input to the Shunt Regulator.
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
