MATCHED R
參數(shù)資料
型號(hào)： AD8137YCPZ-REEL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 17/33頁(yè)
文件大?。?/td> 0K
描述： IC AMP DIFF R-R LP 20MA 8LFCSP
標(biāo)準(zhǔn)包裝： 5,000
放大器類(lèi)型： 差分
電路數(shù)： 1
輸出類(lèi)型： 差分，滿(mǎn)擺幅
轉(zhuǎn)換速率： 450 V/µs
-3db帶寬： 110MHz
電流 - 輸入偏壓： 500nA
電壓 - 輸入偏移： 700µV
電流 - 電源： 3.2mA
電流 - 輸出 / 通道： 20mA
電壓 - 電源，單路/雙路(±)： 2.7 V ~ 12 V，± 2.7 V ~ 6 V
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 8-VFDFN 裸露焊盤(pán)，CSP
供應(yīng)商設(shè)備封裝： 8-LFCSP-VD（3x3）
包裝： 帶卷 (TR)
Data Sheet
AD8137
Rev. E | Page 23 of 32
APPLICATIONS INFORMATION
ANALYZING A TYPICAL APPLICATION WITH
MATCHED RF AND RG NETWORKS
Typical Connection and Definition of Terms
Figure 64 shows a typical connection for the AD8137, using
matched external RF/RG networks. The differential input
terminals of the AD8137, VAP and VAN, are used as summing
junctions. An external reference voltage applied to the VOCM
terminal sets the output common-mode voltage. The two
output terminals, VOP and VON, move in opposite directions
in a balanced fashion in response to an input signal.
04771-0-055
+
–
VAP
VAN
VON
VOP
–
+
VO, dm
RL, dm
AD8137
CF
RF
RG
CF
RF
VIP
VOCM
VIN
Figure 64. Typical Connection
The differential output voltage is defined as
VO, dm = VOP VON
(1)
Common-mode voltage is the average of two voltages. The
output common-mode voltage is defined as
2
,
ON
OP
cm
O
V
+
=
(2)
Output Balance
Output balance is a measure of how well VOP and VON are
matched in amplitude and how precisely they are 180° out of
phase with each other. It is the internal common-mode feedback
loop that forces the signal component of the output common-
mode toward zero, resulting in the near perfectly balanced
differential outputs of identical amplitude and are exactly 180°
out of phase. The output balance performance does not require
tightly matched external components, nor does it require that
the feedback factors of each loop be equal to each other. Low
frequency output balance is ultimately limited by the mismatch
of an on-chip voltage divider.
Output balance is measured by placing a well-matched resistor
divider across the differential voltage outputs and comparing
the signal at the divider’s midpoint with the magnitude of the
differential output. By this definition, output balance is equal to
the magnitude of the change in output common-mode voltage
divided by the magnitude of the change in output differential
mode voltage:
dm
O
cm
O
V
Balance
Output
,
=
(3)
The differential negative feedback drives the voltages at the summing
junctions VAN and VAP to be essentially equal to each other.
VAN = VAP
(4)
The common-mode feedback loop drives the output common-
mode voltage, sampled at the midpoint of the two internal
common-mode tap resistors in Figure 62, to equal the voltage
set at the VOCM terminal. This ensures that
2
, dm
O
OCM
OP
V
+
=
(5)
and
2
, dm
O
OCM
ON
V
=
(6)
ESTIMATING NOISE, GAIN, AND BANDWITH WITH
MATCHED FEEDBACK NETWORKS
Estimating Output Noise Voltage and Bandwidth
The total output noise is the root-sum-squared total of several
statistically independent sources. Because the sources are
statistically independent, the contributions of each must be
individually included in the root-sum-square calculation. Table 7
lists recommended resistor values and estimates of bandwidth
and output differential voltage noise for various closed-loop
gains. For most applications, 1% resistors are sufficient.
Table 7. Recommended Values of Gain-Setting Resistors and
Voltage Gain for Various Closed-Loop Gains
Gain
RG ()
RF ()
3 dB Bandwidth
(MHz)
Total Output
Noise (nV/√Hz)
1
1 k
72
18.6
2
1 k
2 k
40
28.9
5
1 k
5 k
12
60.1
10
1 k
10 k
6
112.0
相關(guān)PDF資料
PDF描述
3412.0123.24 FUSE 4A 32V 0603 FAST
AD8602DR-REEL IC OPAMP GP CMOS 8.4MHZ 8SOIC
AD8033ARZ-REEL IC OPAMP VF R-R LN LP 60MA 8SOIC
LT1722IS8#TRPBF IC PREC OPAMP 200MHZ SNGL 8-SOIC
AD8602DR IC OPAMP GP CMOS 8.4MHZ 8SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8137YCPZ-REEL7 功能描述:IC AMP DIFF R-R LP 20MA 8LFCSP RoHS:是 類(lèi)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(lèi)型:RF/IF 差分 電路數(shù):1 輸出類(lèi)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(lèi)型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤(pán)，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(chēng):ADL5561ACPZ-R7CT
AD8137YR 功能描述:IC AMP DIFF R-R LP 20MA 8SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 其它有關(guān)文件:Automotive Product Guide 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:- 放大器類(lèi)型:通用 電路數(shù):1 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:Digi-Reel® 其它名稱(chēng):MAX4475AUT#TG16DKR
AD8137YR-EBZ 功能描述:BOARD EVAL FOR AD8137YR RoHS:是 類(lèi)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:-
AD8137YR-REEL 制造商:Analog Devices 功能描述:SP Amp DIFF AMP Single R-R O/P
AD8137YR-REEL7 功能描述:IC AMP DIFF R-R LP 20MA 8SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類(lèi)型:電壓反饋 電路數(shù):4 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*