參數(shù)資料
型號(hào): OPA357AIDDA
英文描述: 250MHz, Rail-to-Rail I/O, CMOS Operational Amplifier with Shutdown
中文描述: 250MHz的,軌至軌I / O,CMOS運(yùn)算放大器具有關(guān)斷
文件頁(yè)數(shù): 7/15頁(yè)
文件大?。?/td> 329K
代理商: OPA357AIDDA
"#$
SB0S294C DECEMBER 2003 REVISED JULY 2004
www.ti.com
7
A capacitor placed in parallel with the resistor (Figure 1)
creates an additional filter pole that provides additional
stop-band attenuation. With a 200
source impedance, a
67pF ceramic capacitor provides approximately 28dB
attenuation at 27MHz without affecting the pass band.
VIDEO PERFORMANCE
Industry standard video test patterns include:
Multiburst—packets of different test frequencies to
check for basic frequency response.
Multipulse—pulses
frequencies to test for comprehensive measurement
modulated
at
different
of amplitude and group delay errors across the video
baseband.
Chrominance-to-luminence (CCIR17) — tests ampli-
tude, phase and some distortion
50Hz, 1/2 black1/2 white screen test signal—tests
the worst case signal swing required by the amplifier.
Performance on these test signals are shown.
Figure 2 shows the test circuits for Figure 3 through
Figure 13 and Figure 16. (NOTE:
1
and
2
indicate
measurement points corresponding to the waveforms
labeled
1
and
2
in the figures.)
1
2
a
. Test circuit for Figures 35.
2
d
. Test circuit for Figures 7, 12, and 13.
1
c
. Test circuits for Figures 10 and 11.
2
1
1
1
2
b
. Test circuit for Figures 6, 8, and 16.
220
μ
F
22
μ
F
C
OUT
22
μ
F
NOTE:
1
and
2
indicate measurement points corresponding to the waveforms labeled
1
and
2
in the figures.
SAG
47
μ
F
22
μ
F
Figure 2. Test Circuits Used for Figures 213
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