MCP2036 Microchip Technology, MCP2036 Datasheet - Page 5

• Manufacturer Part Number: MCP2036
• Description: Inductive Sensor Analog Front End Device
• Manufacturer: Microchip Technology

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2.0
Descriptions of the pins are listed in
TABLE 2-1:
2.1
The circuit is fully enabled when a logic-low is applied
to the CS input. The circuit enters in Low-Power mode
when a logic-high is applied to this input. During
Low-Power mode, the detector output voltage falls to
V
This pin has an internal pull-up resistor to ensure
proper selection of the circuit.
2.2
V
sink small currents and has low output impedance. A
load capacitor between 100nF and 1μF needs to be
located close to this pin.
2.3
The V
digital circuitry within the MCP2036. This pin requires
an appropriate bypass capacitor of 100nF. The voltage
on this pin should be maintained in the 2.7V-5.5V range
for specified operation.
The V
path for both analog and digital circuitry of the
MCP2036. If an analog ground plane is available, it is
recommended that this device be tied to the analog
ground plane of the PCB.
© 2009 Microchip Technology Inc.
REF
REF
Pad Name
Reserved
DRVOUT
REFSEL
V
DRVIN
V
and the supply current is reduced to 0.5 μA (typ.).
is a mid-scale reference output. It can source and
LREF
LBTN
DETOUT
V
DD
V
SS
CLK
V
V
CS
DET+
NC
NC
DET-
REF
DD
SS
PIN DESCRIPTION
Chip Select (CS)
Voltage Reference (
Power Supply (V
pin is the power supply pin for the analog and
pin is the ground pin and the current return
PIN FUNCTION TABLE
14 Pins
10
12
13
14
11
1
2
3
4
5
6
7
8
9
Pin Number
DD
16 Pins
, V
V
16
10
12
13
14
15
11
REF
Table
1
2
3
4
5
6
7
8
9
SS
)
)
2-1.
PWR
PWR
OUT
OUT
OUT
I/O
IN
IN
IN
IN
IN
IN
—
IN
IN
—
—
2.4
These pins are inputs for the external coils (reference
and sensor). The inputs should be AC coupled to the
coils by a 10nF ceramic capacitor.
2.5
Digital input that is used to select between coil inputs
(reference and sensor).
2.6
The external clock input is used for synchronous
detection of the AC waveforms on the coils. The clock
signal is also used to generate a triangular waveform
applied to coil driver input.
2.7
The analog input to the coil driver. The triangular
waveform applied to this input should be in phase with
the clock signal for best performance.
2.8
Driver output used to excite the sensor coils. It is a
current-mode output designed to drive small inductive
loads.
CMOS
CMOS
CMOS
Type
AN
AN
AN
AN
AN
AN
AN
AN
AN
AN
—
—
—
Inductor Inputs (LREF, LBTN)
Input Selection (REFSEL)
Clock (CLK)
Inductor Driver Input (DRVIN)
Inductor Driver Output (DRVOUT)
Current Driver Output for Inductors
Negative Input for Output Detector
Positive Input for Output Detector
Must be tied to GND for proper
Reference Inductor Input
Detector Output Voltage
Chip Select, Active low
Power Supply Return
Detector Select Input
Active Inductor Input
Current Driver Input
Voltage Reference
Power Supply
Description
Clock Signal
MCP2036
No connect
No connect
operation.
DS22186A-page 5