TL1451A_15 Datasheet, PDF (18/36 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
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SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
70
VCC = 5 V
Cref = 470 pF
60 _{TA = 25°C}
CLOSED-LOOP GAIN AND PHASE SHIFT
vs
FREQUENCY
50
40
Closed-Loop Gain
(Left Scale)
30
Phase Shift
(Right Scale)
20
10
0
100
1k
10 k
f – Frequency – Hz
Vref
+
–
39 kΩ
39 kΩ
Cref
100 k
Test Circuit
Figure 21
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0°
–10°
–20°
–30°
–40°
–50°
–60°
–70°
–80°
–90°
1M
18
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