Linear Technology DC2257A Demo Manual page 4

DEMO MANUAL DC2257A
QUICK START PROCEDURE
Figure 2. Output Current Noise Spectrum with Spread Spectrum = OFF , V
Figure 3. Output Current Noise Spectrum with Spread Spectrum = ON, V
4
Output Current Noise Spectrum
50
40
30
20
10
0
–10
–20
DETECTOR = PEAK–HOLD
–30
RBW = 9kHz
CT–1 CURRENT TRANSFORMER
–40
SPREAD SPECTRUM = OFF
–50
0 5 10 15 20
FREQUENCY (MHz)
50
40
30
20
10
0
–10
–20
DETECTOR = PEAK–HOLD
–30
RBW = 9kHz
CT–1 CURRENT TRANSFORMER
–40
SPREAD SPECTRUM = ON
–50
0 5 10 15 20
FREQUENCY (MHz)
25 30
DC2257A F02
= 12V, P = 42W, CT-1 Current Transformer
IN OUT
25 30
DC2257A F02
= 12V, P = 42W, CT-1 Current Transformer
IN OUT
dc2257af