AS5045 AB austriamicrosystems, AS5045 AB Datasheet - Page 9

• Manufacturer Part Number: AS5045 AB
• Description: BOARD ADAPTER AS5045
• Manufacturer: austriamicrosystems

Specifications of AS5045 AB

• Sensor Type: Magnetic, Rotary Position
• Sensing Range: 360°
• Interface: Serial
• Voltage - Supply: 9V
• Embedded: No
• Utilized Ic / Part: AS5045
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Sensitivity: -

AS5045 12-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
Adapter PCB Operation Manual
If you use the Adapter PCB as external encoder for the AS5045 demoboard with an extension cable or experience
data transmission errors, it is requested to configure the Adapter PCB for 3.3V supply voltage.
9.1.1
Perform the following modifications:
* If longer cables are used, a pull-down resistor at the DO line of 22k - 56k Ohms is recommended to discharge
the signal between data transmissions and no static voltage is built up.
Revision A.02, 14-Mar-07
10n
•
•
•
Cap only required for
OTP programming
1
2
3
4
5
6
7
8
MagDECn
NC
NC
Mode
VSS
Prog_DI
MagINCn
NC
Modifications to operate the adapter board at 3.3V
disconnect the 5V supply between Demoboard and Adapter PCB: remove or cut off pin "+5VUSB" at the
bottom of the AS5045 demoboard
connect pins "3V3" and "5V" on the Adapter PCB. Ideally, connect the pins right at the bottom of the
7pin female connector with a piece of wire or solder joint.
you may also remove the 78L05 voltage regulator from the Adapter PCB to prevent accidental damage
of the IC when an input voltage is applied to the regulator (and the 5V output is fed to the VDD3V3
supply pin)
AS5045
IC1
VDD3V3
Figure 10: Connecting an external AS5045 application to the demoboard (See Figure 9)
VDD5V
PWM
CSn
CLK
DO
NC
NC
Figure 9: Configuring the Adapter PCB for 3.3V operation (See Figure 10)
16
15
14
13
12
11
10
9
1µF
+
max. length = 2 inches (5cm)
as short as possible!
keep these 6 wires
For programming,
www.austriamicrosystems.com
22k
*see Text
7
6
5
4
3
2
1
PROG
CSN
DO
CLK
VDD3V3
5VUSB
VSS
AS5045 Demoboard
GND
µC
3V3
3
2
1
connect to USB
interface on PC
7.5 … 8.0V
only required for
OTP programming
VPROG
VSS
+
10µF
Page 9 of 12
GND