TL594
PULSE WIDTH MODULATION CONTROL CIRCUIT
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
TYPICAL CHARACTERISTICS
OSCILLATOR FREQUENCY AND
FREQUENCY VARIATION †
vs
TIMING RESISTANCE
100 k
40 k
−2%
Oscillator Frequency − Hz
10 k
4k
1k
400
100
40
10
1k
−1%
0%
0.1
µF
†
Df = 1%
CT = 1
µF
0.01
µF
0.001
µF
VCC = 15 V
TA = 25°C
4k
10 k
40 k 100 k
RT − Timing Resistance −
Ω
400 k
1M
† Frequency variation (∆f) is the change in oscillator frequency that occurs over the full temperature range.
Figure 5
AMPLIFIER VOLTAGE AMPLIFICATION
vs
FREQUENCY
100
90
80
Voltage Amplification − dB
70
60
50
40
30
20
10
0
1
10
100
1k
10 k
100 k
1M
VCC = 15 V
∆V
O = 3 V
TA = 25°C
f − Frequency − Hz
Figure 6
10
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