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參數(shù)資料
| 型號： | OPA2111SM |
| 英文描述： | EMITTER IR 950NM 5MM SMD RADIAL |
| 中文描述： | 雙低噪聲運算放大器精密Difet |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 231K |
| 代理商： | OPA2111SM |
OPA2111
8
TYPICAL PERFORMANCE CURVES
(CONT)
T
A
= +25
°
C, V
CC
=
±
15VDC unless otherwise noted.
APPLICATIONS INFORMATION
OFFSET VOLTAGE ADJUSTMENT
The OPA2111 offset voltage is laser-trimmed and will
require no further trim for most applications.
Offset voltage can be trimmed by summing (see Figure 1).
With this trim method there will be no degradation of input
offset drift.
INPUT PROTECTION
Conventional monolithic FET operational amplifiers require
external current-limiting resistors to protect their inputs
against destructive currents that can flow when input FET
gate-to-substrate isolation diodes are forward-biased. Most
BIFET amplifiers can be destroyed by the loss of –V
CC
.
Because of its dielectric isolation, no special protection is
needed on the OPA2111. Of course, the differential and
common-mode voltage limits should be observed. Static
damage can cause subtle changes in amplifier input charac-
teristics without necessarily destroying the device. In preci-
sion operational amplifiers (both bipolar and FET types),
this may cause a noticeable degradation of offset voltage and
drift.
Static protection is recommended when handling any preci-
sion IC operational amplifier.
FIGURE 1. Offset Voltage Trim.
MAXIMUM UNDISTORTED OUTPUT
VOLTAGE vs FREQUENCY
100k
Frequency (Hz)
1k
10k
1M
30
20
10
O
0
SUPPLY CURRENT vs TEMPERATURE
8
6
4
2
–50
–25
0
25
50
75
100
125
Ambient Temperature (°C)
S
–75
0
SMALL SIGNAL TRANSIENT RESPONSE
1
Time (μs)
0
5
O
2
3
4
60
40
20
0
–20
–40
–60
TOTAL HARMONIC DISTORTION
vs FREQUENCY
1
0.1
0.01
T
0.1
1
10
100
1K
10K
100K
THD + Noise
Residual Test Limit
0.001
Frequency (Hz)
E
O
2k
10k
10k
E
O
= 7V
E
O
=
700mV
1/2 OPA2111
150k
Out
20
100k
–15V
+15V
±2mV
OffsetTrim
In
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