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TL1451A_15 Datasheet, PDF (15/36 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS | |||
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70
VCC = 5 V
Rref = 150 â¦
60 Cref = 470 pF
TA = 25°C
50
40
30
20
10
0
100
TL1451A
DUAL PULSEÄWIDTHÄMODULATION CONTROL CIRCUITS
Ä
SLVS024E â FEBRUARY 1983 â REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
CLOSED-LOOP GAIN AND PHASE SHIFT
vs
FREQUENCY
Closed-Loop Gain
(Left Scale)
1k
10 k
f â Frequency â Hz
Vref
39 kâ¦
+
â
Cx
Rref
39 kâ¦
Cref
CX: 47 pF
470 pF
4700 pF
Phase Shift
(Right Scale)
100 k
0°
â10°
â20°
â30°
â40°
â50°
â60°
â70°
â80°
â90°
1M
Test Circuit
Figure 18
www.ti.com
15
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