Angle Sensor. EM3242 Datasheet

EM3242 Sensor. Datasheet pdf. Equivalent

Part EM3242
Description Angle Sensor
Feature [EM3242] Applications □ Small absolute rotary encoder □ Small input device (mode selector, volume c.
Manufacture AKM
Datasheet
Download EM3242 Datasheet



EM3242
[EM3242]
Applications
Small absolute rotary encoder
Small input device (mode selector, volume control, and soon)
Potentiometer
Rotary switch
EM3242
Angle Sensor IC
Features
Si monolithic rotary position sensor IC with embedded Hall devices
Contactless rotary position sensor is easily implemented with magnetic disc (radial magnetic) and sensor IC.
Analog ratiometric output (10%VDD90%VDD)
10 bit Angular Resolution
3V single power supply
Extremely small temperature drift (typ. +/-1.0 degree)
Ambient operating temperature range: Ta=-40 to 150ºC
Package: SOP6 body size 3.6×3.0×0.95mm
HE
X
HE
HE
Y
HE
Preamp
Block Diagram
VDD
VSS
Angle detection
(Mixed signal
processing circuit)
10bit
DAC
Buffer
Sine wave
ROM
AOUT
TSTA TSTB
PDN
<EM3242 Datasheet V1.2>
1
April, 2013



EM3242
[EM3242]
Block name
HE
PreAmp
Angle Detection
&
Sine Wave ROM
DAC
Functional Blocks
Function
Hall Elements. These detect X/Y-compositions of flux which is parallel to the IC
package surface by using magnetic concentrator.
This is able to amplify signals from Hall elements.
Angle Detection makes digital angle data from signals from Hall Elements using Sine
Wave ROM.
Digital to analog converter for angle output.
No. Symbol
1 TSTB
2 VSS
3 PDN
4 AOUT
5 VDD
6 TSTA
PIN Description
I/O Type
Function
I/O
Analog/Digital
TEST dedicated PIN, which should be connected to the GND in
use.
-
Power
Ground PIN.
I
Analog
Power down PIN. IC is active in the case that PDN is High. IC is
power down in the case that PDN is Low.
O
Analog
Analog output PIN for angle data. CL: max.200pFpull-down
Power Supply PIN. 0.1uF Ceramic Capacitor is required between
-
Power
Vss for stabilization. If Capacitor has magnetism, separate it
around 10mm from IC.
I/O
Analog
TEST dedicated PIN, which should be connected to the GND in
use.
Application Circuit
Analog Voltage Output
Power SuppAlynalog Voltage Output
VDD(2.7V-3.3V)
0.1F
Locate close to IC
4:AOUT PDN:3
5:VDD VSS:2
6:TSTA TSTB:1
Power Down Input
*Bypass capacitor must be inserted between VDD and VSS.
<EM3242 Datasheet V1.2>
2
April, 2013







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