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參數(shù)資料
| 型號(hào)： | 5962-89642012A |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | OP-AMP, 3500 uV OFFSET-MAX, 80 MHz BAND WIDTH, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大小： | 475K |
| 代理商： | 5962-89642012A |
AD842
–7–
REV. E
OFFSET NULLING
The input offset voltage of the AD842 is very low for a high
speed op amp, but if additional nulling is required, the circuit
shown in Figure 21 can be used.
AD842 SETTLING TIME
Figures 22 and 24 show the settling performance of the AD842
in the test circuit shown in Figure 23.
Settling time is defined as:
The interval of time from the application of an ideal step
function input until the closed-loop amplifier output has
entered and remains within a specified error band.
This definition encompasses the major components which com-
prise settling time. They include (1) propagation delay through
the amplifier; (2) slewing time to approach the final output value;
(3) the time of recovery from the overload associated with slew-
ing and (4) linear settling to within the specified error band.
Expressed in these terms, the measurement of settling time is
obviously a challenge and needs to be done accurately to assure
the user that the amplifier is worth consideration for the
application.
–
+
AD842
RL
2.2 F
0.1 F
–VS
OUTPUT
2.2 F
0.1 F
+VS
10k
INPUT
Figure 21. Offset Nulling (DIP Pinout)
Figure 22. 0.01% Settling Time
2.2 F
0.1 F
AD842
499
2.2 F
0.1 F
–15V
DDD5109
FLAT-TOP
PULSE
GENERATOR
50
499
1k
499
1k
+15V
HP6263
ERROR
AMP
( 15)
TEK
7603
OSCILLOSCOPE
TEK
7A13
TEK
7A16
FET PROBE
TEK P6201
Figure 23. Settling Time Test Circuit
Figure 23 shows how measurement of the AD842’s 0.01% set-
tling in 100 ns was accomplished by amplifying the error signal
from a false summing junction with a very high-speed propri-
etary hybrid error amplifier specially designed to enable testing
of small settling errors. The device under test was driving a
300
load. The input to the error amp is clamped in order to
avoid possible problems associated with the overdrive recovery
of the oscilloscope input amplifier. The error amp gains the
error from the false summing junction by 15, and it contains a
gain vernier to fine trim the gain.
Figure 24 shows the “l(fā)ong term” stability of the settling charac-
teristics of the AD842 output after a 10 V step. There is no
evidence of settling tails after the initial transient recovery time.
The use of a junction isolated process, together with careful
layout, avoids these problems by minimizing the effects of tran-
sistor isolation capacitance discharge and thermally induced
shifts in circuit operating points. These problems do not occur
even under high output current conditions.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 59628964201CA | 制造商:AD 功能描述:5962-8964201CA |
| 5962-8964201CA | 制造商:Analog Devices 功能描述:OP Amp Single GP 制造商:Analog Devices 功能描述:OP AMP SGL GP 18V 14CDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:HIGH OUTPUT CURRENT AMP - Bulk 制造商:Analog Devices Inc. 功能描述:Operational Amplifiers - Op Amps HIGH OUTPUT CURRENT IC |
| 5962-8964201XA | 功能描述:運(yùn)算放大器 - 運(yùn)放 HIGH OUTPUT CURRENT IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 共模抑制比（最小值）:120 dB 輸入補(bǔ)償電壓:6 V 輸入偏流（最大值）:1400 pA 工作電源電壓:4 V to 36 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 轉(zhuǎn)換速度:0.8 V / us 關(guān)閉:No 輸出電流: 最大工作溫度:+ 125 C 封裝:Reel |
| 5962-8964401PA | 功能描述:運(yùn)算放大器 - 運(yùn)放 IC 2000V WIDE BW RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 共模抑制比（最小值）:120 dB 輸入補(bǔ)償電壓:6 V 輸入偏流（最大值）:1400 pA 工作電源電壓:4 V to 36 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 轉(zhuǎn)換速度:0.8 V / us 關(guān)閉:No 輸出電流: 最大工作溫度:+ 125 C 封裝:Reel |
| 59628964501PA | 制造商:AD 功能描述:* |
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