參數(shù)資料
型號(hào)： ADA4841-1
廠商： Analog Devices, Inc.
英文描述： Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
中文描述： 低功耗，低噪聲和失真，軌到軌輸出放大器
文件頁(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 442K
代理商： ADA4841-1
ADA4841-1/ADA4841-2
Table 6. Recommended Values and Typical Performance
Rev. C | Page 18 of 20
Gain
+1
+2
1
+5
+10
+20
R
F
(Ω)
0
499
499
499
499
499
R
G
(Ω)
N/A
499
499
124
54.9
26.1
3 dB BW (MHz)
77
34
38
11
5
2.3
Slew Rate (V/μs)
12.5
12.5
12.5
12
12
11.2
Peaking
(dB)
0.9
0.3
0.4
0
0
0
Output Noise ADA4841-1/
ADA4841-2 Only (nV/√Hz)
2
4
4
10
20
40
Total Output Noise Including
Resistors (nV/√Hz)
2
5.73
5.73
11.9
21.1
42.2
Capacitor selection is critical for optimal filter performance.
Capacitors with low temperature coefficients, such as NPO
ceramic capacitors, are good choices for filter elements. Figure 51
shows the filter response.
0
0.03
10
FREQUENCY (MHz)
1
0.1
–40
G
–35
–30
–25
–20
–15
–10
–5
0
5
Figure 51. Filter Frequency Response
LAYOUT CONSIDERATIONS
To ensure optimal performance, careful and deliberate attention
must be paid to the board layout, signal routing, power supply
bypassing, and grounding.
GROUND PLANE
It is important to avoid ground in the areas under and around
the input and output of the ADA4841-1/ADA4841-2. Stray
capacitance created between the ground plane and the input
and output pads of a device are detrimental to high speed
amplifier performance. Stray capacitance at the inverting input,
along with the amplifier input capacitance, lowers the phase
margin and can cause instability. Stray capacitance at the output
creates a pole in the feedback loop. This can reduce phase
margin and can cause the circuit to become unstable.
POWER SUPPLY BYPASSING
Power supply bypassing is a critical aspect in the performance
of the ADA4841-1/ADA4841-2. A parallel connection of
capacitors from each of the power supply pins to ground works
best. A typical connection is shown in Figure 50. Smaller value
capacitors offer better high frequency response where larger
value electrolytics offer better low frequency performance.
Paralleling different values and sizes of capacitors helps to
ensure that the power supply pins are provided a low ac impedance
across a wide band of frequencies. This is important for minimizing
the coupling of noise into the amplifier. This can be especially
important when the amplifier PSR is starting to roll off—the
bypass capacitors can help lessen the degradation in PSR
performance.
Starting directly at the ADA4841-1/ADA4841-2 power supply
pins, the smallest value capacitor should be placed on the same
side of the board as the amplifier, and as close as possible to the
amplifier power supply pin. The ground end of the capacitor
should be connected directly to the ground plane. Keeping the
capacitors’ distance short but equal from the load is important
and can improve distortion performance. This process should
be repeated for the next largest value capacitor.
It is recommended that a 0.1 μF ceramic 0508 case be used. The
0508 case size offers low series inductance and excellent high
frequency performance. A 10 μF electrolytic capacitor should be
placed in parallel with the 0.1 μF capacitor. Depending on the
circuit parameters, some enhancement to performance can be
realized by adding additional capacitors. Each circuit is different
and should be individually analyzed for optimal performance.
相關(guān)PDF資料
PDF描述
ADA4841-1YRJZ-R2 Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-1YRJZ-R7 Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-1YRJZ-RL Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-1YRZ Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-1YRZ-R7 Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADA4841-1YR-EBZ 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Low Noise and Distortion ail-to-Rail Output Amplifiers
ADA4841-1YRJ-EBZ 功能描述:BOARD EVAL FOR ADA4841-1YRJ RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 運(yùn)算放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:-
ADA4841-1YRJZ 制造商:Analog Devices 功能描述:OP AMP VF R-R LP LN SOT23-6 制造商:Analog Devices 功能描述:OP AMP, VF, R-R, LP, LN, SOT23-6 制造商:Analog Devices 功能描述:OP AMP, VF, R-R, LP, LN, SOT23-6, Op Amp Type:Rail to Rail, No. of Amplifiers:1, 制造商:Analog Devices 功能描述:OP AMP, VF, R-R, LP, LN, SOT23-6, Op Amp Type:Rail to Rail, No. of Amplifiers:1, Slew Rate:13V/s, Supply Voltage Range:2.7V to 12V, Amplifier Case Style:SOT-23, No. of Pins:6, Bandwidth:80MHz, Operating Temperature Min:-40C, , RoHS Compliant: Yes
ADA4841-1YRJZ-R2 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P ±6V/12V 6-Pin SOT-23 T/R 制造商:Analog Devices 功能描述:OP AMP SGL VOLT FDBK R-R O/P 6V/12V 6PIN SOT-23 - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:IC OP AMPVFR-RLPLNSOT23-6 制造商:Analog Devices 功能描述:IC, OP-AMP, 80MHZ, 13V/ us, SOT-23-6, Op Amp Type:Low Power, No. of Amplifiers:1
ADA4841-1YRJZ-R2 制造商:Analog Devices 功能描述:IC OP-AMP 80MHZ 13V/S SOT-23-6
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