Fujitsu MB3878 manual Triangular wave oscillator

MB3878

wave oscillator frequency	fOSC (Hz)
Triangular

Triangular wave oscillator frequency vs.					Triangular wave oscillator frequency vs.
	timing resistor		frequency			power supply voltage
1 M					320
	Ta = +25	°C			330				Ta = +25 °C
	VCC = 19 V								CTL	= 5 V
	CTL = 5 V		oscillatorwave	(kHz)fOSC					RT =	47 kΩ
					310
					300
100 k					290
					280
			Triangular		270
10 k	100 k	1 M			0	5	10	15	20	25
					260
					250
10 k					240

Timing resistor RT (Ω) Power supply voltage VCC (V)

Triangular wave oscillator frequency

										%)
		340								(
							VCC = 19 V			VTH
		330
							CTL = 5 V
Triangular wave oscillator		320					RT = 47 kΩ			amplifier threshold voltageΔ
	frequency fOSC (kHz)
		310
		300
		290
		280
		270
		260
		250
		240
		−40	−20	0	20	40	60	80	100
										Error
			Ambient temperature Ta ( °C)

Error amplifier threshold voltage vs. ambient temperature (Error Amp.3)

5.0
					VCC	= 19 V
4.0
					CTL = 5 V
3.0
2.0
1.0
0.0
−1.0
−2.0
−3.0
−4.0
−5.0
−40 −20	0	20	40	60	80 100

Ambient temperature Ta ( °C)

(Continued)

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