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ams AG
The technical content of this austriamicrosystems application note is still valid.
Contact information:
Headquarters:
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Tobelbaderstrasse 30
8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
e-Mail:
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AS1110 - Evaluation Board
Application Note
AS1110
Evaluation Board Application Note
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AS1110 - Evaluation Board
Application Note
General Description
Board Description
Connector Description
Label
Name
A
B
C
VDD
GND
VLED
Connector Description
Label
Name
D
E
F
G
H
I
J
K
OEN
LD
CLK
SDI
VDD
NC
GND
SDO
Components Connectors Description
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Label
Name
L
Rext
M
N
ON0-7
CLED
Measurement Points Description
Label
Name
Description
Te
O
P
Q
R
S
T
OEN
LD
CLK
SDI
SDO
GND
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Description
Info
Figure 1: Board Description
Figure 2: Board Description
Power Supply Connectors for VDD
and Ground.
Supply Voltage for the LED’s
+3.0V to +5.5V
The output current drivers of the AS1110 can handle up to
+15V.
Description
Info
Output Enable
Serial Data Load
Serial Data Clock
Serial Data Input
Positive Supply Voltage
Not connected
Ground
Serial Data Output
0: Output drivers enabled; 1: Output drivers disabled
Data transferred at the rising edge.
Description
Info
External Resistor
Output Current Drivers
Decoupling Capacity of LEDs
Place resistor here to set the load current.
Connector for LED’s. Upper side interfaces with the output
drivers of the AS1110 while the lower side connects to
VLED.
Jumper to (dis)connect the onboard capacity.
Info
Output Enable
Serial Data Load
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
0: Output drivers enabled; 1: Output drivers disabled
Data transferred at the rising edge.
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AS1110 - Evaluation Board
Application Note
Operational sequence
1.
2.
3.
4.
5.
If not present get the
datasheet
for the
AS1110
from
www.austriamicrosystems.com.
Use the IC on the evaluation board only
with the recommended settings and values as described in the
datasheet.
Place an external resistor in Rext
“L”
to set the LED current. If another capacitance then 330µF 35V is needed it is possible to
disconnect the onboard capacity through the Jumper CLED
“N”.
Connect the LEDs with the output current drivers
“M”.
Connect a +3.0V to +5.5V power supply (VDD
“A”
and GND
“B” or
VDD
“H”
and GND
“J”).
Connect a voltage supply to VLED
“C”.
The output drivers sustain a maximum voltage of +15V at the pin.
Connect the Serial Data Interface. For the data format of the serial interface please see the
datasheet
for the
AS1110.
Have fun using the evaluation board. If there are questions do not hesitate to contact us. See contact information at the end of the
application note.
Layout of demoboard
Figure 3: Schematics
Board schematics and layout
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AS1110 - Evaluation Board
Application Note
Figure 4: Top view
Figure 5: Bottom view
Recommended parts
Label
C1
C2, C4
C3
Info
10µF, ±10%, 16V, X7R
0.1µF , ±10%, 50V, X7R
330u, 35V, Electrolytic
Condensator
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Type
GRM31CR71C106KAC7
GRM21BR71H104KA01
Manufacturer
Murata
Murata
Revision 1.00
4-5
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