NE5539 데이터 시트보기 (PDF) - Philips Electronics
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NE5539 Datasheet PDF : 14 Pages
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Philips Semiconductors
High frequency operational amplifier
Product data
NE/SE5539
NE5539 COLOR VIDEO AMPLIFIER
The NE5539 wideband operational amplifier is easily adapted for
use as a color video amplifier. A typical circuit is shown in Figure 7
along with vector-scope1 photographs showing the amplifier
differential gain and phase response to a standard five-step
modulated staircase linearity signal (Figures 8, 9 and 10). As can be
seen in Figure 9, the gain varies less than 0.5% from the bottom to
the top of the staircase. The maximum differential phase shown in
Figure 10 is approximately +0.1°.
The amplifier circuit was optimized for a 75 Ω input and output
termination impedance with a gain of approximately 10 (20 dB).
NOTE:
1. The input signal was 200 mV and the output 2 V. VCC was ±8 V.
750
75
—V
22nF
—
14
1
6dB LOSS—1
10
SL00578
VIN
8
3
ZO = 75Ω
75
Figure 9. Differential Gain <0.5%
17
+
470
75
NOTE:
75
Instruments used for these measurements were Tektronix 146
NTSC test signal generator, 520A NTSC vectorscope, and 1480
—V 22nF
—V
waveform monitor.
Figure 7. NE5539 Video Amplifier
SL00576
Figure 8. Input Signal
2002 Jan 25
SL00577
9
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