Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Electronic Volume Controller IC
PT2257
PT2257 THD - FAST FOURIER TRANSFORM (FFT) ANALYSIS 1
(Conditions: Rload=10K, Volume Att=0dB, VCC=9V, Output Level=1Vrms)
+0
-20
-40
dB -60
-80
-100
-120
-140
-160
20
50
100
200
500
1k
2k
Hz
5k
10k
PT2257 THD - FAST FOURIER TRANSFORM (FFT) ANALYSIS 2
(Conditions: Rload=10K, Volume Att=0dB, VCC=9V, Output Level=200m Vrms)
+0
-20
-40
dB
-60
-80
-100
-120
-140
-160
20
50
100
200
500
1k
2k
Hz
5k
10k
PT2257 V1.3
- 11 -
December, 2006