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Transcript 
Test Procedure
LV3327PV Evaluation Board
7/10/2012
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
1
Test Procedure for the LV3327PV Evaluation Board
Test Items
*Step check
Volume, Output gain
*Characteristic
Characteristic
Loudness, Output noise voltage, THD, Maximum input voltage,
Input selector, Output selector
7/10/2012
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
2
Test Procedure for the LV3327PV Evaluation Board
Test Setup 1
Power
Supply
Oscilloscope
Audio analyzer
PC
USB I/F B
Board
d
Signal
Generator
Equipment :
9 Power Supply … 1pc
9 Oscilloscope … 1pc
9 Signal Generator … 1pc
9 Audio analyzer … 1pc
9PC … 1pc
9USB I/F Board … 1pc
9LV3327PV Evaluation_Board
Evaluation Board … 1pc
7/10/2012
Fig 1
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
3
Test Procedure for the LV3327PV Evaluation Board
Step check1 : Volume
‡ Please apply an electric power supply:5V.
‡ Input signal : VIN=-10dB,f=1kHz→IN1
‡ Setting from PC
・ Set Input selector in IN1. Each setting level:FLAT.
・ Output Selector select.→Selector(Lch)=Lch, Selector(Rch)=Rch
・ Transmit Volume data. Confirm an output waveform.
Check the waveform in OSC. Confirm the step level in Audio Analyzer.
About the following
g waveforms. Setting
g of Volume: Waveform of 10dB/5dB/0dB/-5dB
1ms/div,1V/div
1ms/div,1V/div
1ms/div,1V/div
1ms/div,1V/div
ROUT
LOUT
Volume:10dB
7/10/2012
Volume:5dB
Volume:0dB
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
Volume:-5dB
4
Test Procedure for the LV3327PV Evaluation Board
Step check2 : Output gain
‡ Please apply an electric power supply:5V.
‡ Input signal : VIN=-10dB,f=1kHz→IN1
‡ Setting from PC
・ Set Input selector in IN1. Each setting level:FLAT.
・ Output Selector select.→Selector(Lch)=Lch, Selector(Rch)=Rch
・ Volume 0dB set
・ Transmit Output gain data. Confirm an output waveform.
Check the waveform in OSC. Confirm the step
p level in Audio Analyzer.
y
About the following waveforms. Setting of Output gain: Waveform of 0dB/6dB
1ms/div,1V/div
1ms/div,1V/div
ROUT
LOUT
Output gain:0dB
7/10/2012
Output gain:6dB
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
5
Test Procedure for the LV3327PV Evaluation Board
Characteristic1 : Loudness
‡Set up (Refer to Fig1)
‡Please apply an electric power supply:5V.
‡ Input signal level : VIN
0dB→IN1
VIN=0dB→IN1
‡Setting from PC
・Set Input selector in IN1. Each setting level:FLAT.
・Transmit Volume data -32dB and Loudness control ON.
・Confirm output level : input frequency 100Hz/1kHz/10kHz.
Check the waveform in OSC. Confirm the output level in Audio Analyzer.
About the following waveforms. Condition : Loudness ON/OFF, input frequency 100Hz/1kHz/10kHz.
2ms/div,0.1V/div
2ms/div,0.1V/div
2ms/div,0.1V/div
RFOUT
Loudness ON
LFOUT
RFOUT
Loudness OFF
LFOUT
7/10/2012
f=100Hz
f=1kHz
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
f=10kHz
www.BDTIC.com/ON/
6
Test Procedure for the LV3327PV Evaluation Board
Test Setup 2
Power
Supply
Oscilloscope
Audio analyzer
PC
USB I/F B
Board
d
Fig 2
7/10/2012
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
7
Test Procedure for the LV3327PV Evaluation Board
Characteristic6 : Output noise voltage
‡ Set up (Refer to Fig2)
‡ Please apply an electric power supply:5V.
‡ Input pin is all GND.
GND
‡ Setting from PC
・Set Input selector in IN1. Each setting level:FLAT
Confirm the output level in Audio Analyzer.→noise level check
Characteristic7 : THD
‡Set up (Refer to Fig1)
‡ Please apply an electric power supply:5V.
‡Input signal : VIN=0dB,f=1kHz→IN1
‡Setting from PC
・Set Input selector in IN1.
IN1 Each setting level:FLAT.
level:FLAT
Confirm the output level in Audio Analyzer.→THD
Characteristic8 : Maximum input voltage
‡Set up (Refer to Fig1)
‡ Please apply an electric power supply:5V.
‡Input frequency: 1kHz→IN1
‡Setting from PC
・Set Input selector in IN1. Each setting level:FLAT.
The output level adjust VIN to become level of THD=1 %.
Confirm level of VIN in Audio Analyzer .→Maximum
→Maximum input voltage
7/10/2012
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
8
Test Procedure for the LV3327PV Evaluation Board
Characteristic9 : Input selector
‡Please apply an electric power supply:5V.
‡Connect Signal Generator to “input sel” which wants to input a signal (input signal :VIN=0dB,f=1kHz).
Other “input
input sel
sel” ,OPEN.
OPEN
‡Setting from PC
・Selector “input sel” set. Each of other setting level : FLAT.
・Check the waveform in OSC. →Confirm the output waveform of FLAT.
・Choose “input sel” which does not enter of the signal . →Confirm the output waveform of no signal.
In the case of set up (Refer to Fig1) , IN1:signal input, other “input sel”: OPEN .
7/10/2012
SANYO Semiconductor : An ON semiconductor Company
www.onsemi.com
www.BDTIC.com/ON/
9
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