Fujitsu MB3878 manual Deg

MB3878

(Continued)

Error amplifier gain and phase vs. frequency

Gain AV (dB)

40

20

0

−20

−40

1 k

	AV	Ta = +25 °C
			180						VCC = 19 V
							5.2 V			240 kΩ
	φ		90	(deg)
					IN	−	+	2.4 kΩ
						1 ∝F		10 kΩ
			0	φ					8	−	OUT
			−90	Phase					(4)		7
									(3)	+	(5)
								10 kΩ	9
									2.5 V		Error Amp.1
											(Error Amp.2)
			−180
10 k	100 k	1 M	10 M

Frequency f (Hz)

	Current detection amplifier gain and phase
			vs. frequency
	40		φ	Ta = +25 °C
					180
(dB)	20		AV		90	(deg)
	0				0
Gain AV						Phase φ
	−20				−90
						12.6 V
	−40				−180
	1 k	10 k	100 k	1 M	10 M
		Frequency f (Hz)

Power dissipation vs. ambient temperature

D(mW)	800
	740
	700
	600
P
dissipation	500
	400
	300
Power	200
	100
	0
	−40	−20	0	20	40	60	80	100

Ambient temperature Ta ( °C)

VCC = 19 V
13	+	OUT
(24)	⋅25	10
12	−	(2)

(1)

12.55 V Current Amp.1 (Current Amp.2)

11