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參數(shù)資料
| 型號(hào)： | OPA622AU |
| 英文描述： | OP-AMP|SINGLE|BIPOLAR|SOP|14PIN|PLASTIC |
| 中文描述： | 運(yùn)放|單|雙極|?？苵 14PIN |塑料 |
| 文件頁(yè)數(shù)： | 17/18頁(yè) |
| 文件大小： | 335K |
| 代理商： | OPA622AU |
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OPA622
17
RECOMMENDED COMPONENTS VALUES
Table I summarizes recommended component values for
optimum flat frequency response. The recommended values
were determined with a 100
load resistance and a 2pF load
capacitance. Some adjustment of circuit values may be
required, especially with higher load capacitance. According
to the behavior shown in Figure 12, the frequency response
will show a peaking when the R
OG
is decreased and will
roll off more gradually when R
OG
is increased. The C
OTA
capacitor is responsible for the first open-loop pole and a
small external capacitor for the gains +1V/V and +2V/V is
required for stable operation. The package pins, the internal
lead frame, and bond wires form a resonant circuit. A
resistor in the range of 150
to 390
in series with all high
impedance inputs will damp the package related resonant
circuit. Also, the feedback resistor R
1
is in series with the
inverting high impedance inputs. R
1
≥
330
is recom-
mended for the DIP package and R
1
≥
150
is recommended
for the SO-package.
OPA622AP, I
Q
= 5mA, R
QC
= 430
PLASTIC DIP
OPA622AU, I
Q
= 5mA, R
QC
= 430
SURFACE-MOUNT
G
CL
G
CL
Component
+1
+2
+5
+10
–1
–2
UNITS
Component
+1
+2
+5
+10
–1
–2
UNITS
R
1
R
2
R
3
R
OG
C
OTA
R
ILR
R
4
R
Ring
Bandwidth
V
OUT
= 0.2Vp-p
V
OUT
= 2.8Vp-p
0
—
220
330
2.2
150
—
—
—
330
330
0
150
1
150
—
—
—
620
160
0
56
—
150
—
—
—
1600
180
0
10
—
150
—
—
—
390
—
0
200
1
150
390
62
150
470
—
0
150
1
150
240
62
150
pF
R
1
R
2
R
3
R
OG
C
OTA
R
LR
R
4
R
Ring
Bandwidth
V
OUT
= 0.2Vp-p
V
OUT
= 2.3Vp-p
150
—
0
270
2.2
200
—
—
—
240
240
0
150
1
150
—
—
—
470
120
0
47
—
200
—
—
—
820
91
0
10
—
200
—
—
—
240
—
0
160
1
150
240
68
150
300
—
0
100
1
150
150
68
150
pF
170
220
160
200
140
170
110
110
135
150
125
150
MHz
MHz
200
250
170
240
160
230
100
100
180
250
175
240
MHz
MHz
TABLE I. Recommended Components Values for Optimum Frequency Performance.
FIGURE 17. Silkscreen and Test Circuit Board Layouts.
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