DAEV9118.001
29 January, 2002
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MAS9118 evaluation kit provides all the necessary
hardware (excluding PC running Windows 9X) and
software for evaluation of MAS9118 audio DAC with
class-D output stage.
MAS9118 evaluation board has two adjustable
voltage regulators for testing the input level shifters
of MAS9118 and for selecting various supply
voltages for class-D output driver.
The evaluation kit includes an on-board buzzer.
Optionally an external buzzer or loudspeaker can be
easily connected to the demo board by using a
jumper connector.
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MAS9118 audio DAC with class-D output stage
Power regulation
Adjustable driver voltage
Parallel port interface for PC
Possibility to play wave files
Software synthesizer for generating a test signal and multi-tone melodies
F
OSC
(8 MHz)
To the parallel port of a PC
MAS9118 Eval V2.0
R2
VDDI
(1.8 V)
R1
VDD
(3.6 V)
+7.5 V (600 mA)
0 V (ground)
X5
X3
X4
JP1
Buzzer and speaker configurations:
A) Buzzer on circuit board
(Citizen CHB-03E)
JP1
Jumper between
pins 1 & 2
buzzer
MAS9118
MAS9118 Eval V2.0
Reset
Figure 1.
B) External buzzer or loudspeaker
X6
JP1
Between
pins 2 & 4
1 (4)
MAS [ MICRO ANALOG SYSTEMS ]
