參數(shù)資料
型號(hào)： ADA4841-1YRJZ-R7
廠商： ANALOG DEVICES INC
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
中文描述： OP-AMP, 300 uV OFFSET-MAX, PDSO6
封裝： ROHS COMPLIANT, MO-178AB, SOT-23, 6 PIN
文件頁(yè)數(shù)： 14/20頁(yè)
文件大?。?/td> 442K
代理商： ADA4841-1YRJZ-R7
ADA4841-1/ADA4841-2
The output noise spectral density can be calculated by
Rev. C | Page 14 of 20
[
]
2
2
2
2
2
2
2
4
4
1
4
F
G
F
S
G
F
R
ien
kTRg
R
R
ven
R
ien
kTRs
R
R
kTRf
en
vout
+
+
+
+
+
+
=
_
(6)
where:
k
is Boltzmann’s Constant.
T
is the absolute temperature, degrees Kelvin.
ien
is the amplifier input current noise spectral density, pA/√Hz.
ven
is the amplifier input voltage spectral density, nV/√Hz.
R
S
is the source resistance as shown in Figure 40.
R
F
and
R
G
are the feedback network resistances, as shown in
Figure 40.
Source resistance noise, amplifier voltage noise (ven), and the
voltage noise from the amplifier current noise (ien × R
S
) are
all subject to the noise gain term (1 + R
F
/R
G
). Note that with a
2.1 nV/√Hz input voltage noise and 1.4 pA/√Hz input current,
the noise contributions of the amplifier are relatively small for
source resistances between approximately 200 Ω and 30 kΩ.
Figure 41 shows the total RTI noise due to the amplifier vs. the
source resistance. In addition, the value of the feedback resistors
used impacts the noise. It is recommended to keep the value of
feedback resistors between 250 Ω and 1 kΩ to keep the total
noise low.
1000
0.1
10
100k
0
SOURCE RESISTANCE (
Ω
)
N
100
10
1
100
1k
10k
TOTAL AMPLIFIER NOISE
SOURCE RESISTANCE NOISE
AMPLIFIER + RESISTOR NOISE
Figure 41. RTI Noise vs. Source Resistance
HEADROOM CONSIDERATIONS
The ADA4841-1/ADA4841-2 are designed to provide maximum
input and output signal ranges with 16-bit to 18-bit dc linearity.
As the input or output headroom limits are reached, the signal
linearity degrades.
The input stage positive limit is almost exactly a volt below the
positive supply at room temperature. Input voltages above that
start to show clipping behavior. The positive input voltage limit
increases with temperature with a coefficient of about 2 mV/°C.
The lower supply limit is nominally below the minus supply;
therefore, in a standard gain configuration, the output stage
limits the signal headroom on the negative supply side. Figure 42
and Figure 43 show the nominal CMRR behavior at the limits of
the input headroom for three temperatures—this is generated
using the subtractor topology shown in Figure 44, which avoids
the output stage limitation.
300
260
220
180
140
100
60
20
–20
–60
–100
–140
–180
–220
–260
–300
3.00
5.00
0
COMMON-MODE VOLTAGE (V)
C
μ
V
3.20
3.40
3.60
3.80
4.00
4.20
4.40
4.60
4.80
–40°C
+25°C
+125°C
Figure 42. +CMV vs. Common-Mode Error vs. V
OS
0
–800
–6.00
–4.00
0
COMMON-MODE VOLTAGE (V)
C
μ
V
–50
–100
–150
–200
–250
–300
–350
–400
–450
–500
–550
–600
–650
–700
–750
–5.80 –5.60 –5.40 –5.20 –5.00 –4.80 –4.60 –4.40 –4.20
–40°C
+25°C
+125°C
Figure 43. CMV vs. Common-Mode Error vs. V
OS
+ V
OUT
–
– V
CM
+
0
Figure 44. Common-Range Subtractor
相關(guān)PDF資料
PDF描述
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
ADA4841-1YRZ-RL Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-2YRMZ 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
ADA4841-1YRJZ-RL 功能描述:IC OPAMP VF R-R LP LN SOT23-6 RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
ADA4841-1YRZ 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P ±6V/12V 8-Pin SOIC N T/R 制造商:Analog Devices 功能描述:LOW POWER, LOW NOISE AND DISTORTION, RAIL-TO-RAIL OUTPUT AMP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
ADA4841-1YRZ-R7 功能描述:IC OPAMP VF R-R LP LN 60MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Differential Circuit Design Techniques for Communication Applications 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應(yīng)商設(shè)備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT
ADA4841-1YRZ-R7 制造商:Analog Devices 功能描述:IC OP-AMP 80MHZ 13V/S SOIC-8
ADA4841-1YRZ-RL 功能描述:IC OPAMP VF R-R LP LN 60MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
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