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參數(shù)資料
| 型號(hào)： | AD8563ARMZ-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 1.8 V to 5 V Auto-Zero, In-Amp with Shutdown |
| 中文描述： | INSTRUMENTATION AMPLIFIER, 500 uV OFFSET-MAX, 0.001 MHz BAND WIDTH, PDSO10 |
| 封裝： | LEAD FREE, MO-187BA, MSOP-10 |
| 文件頁(yè)數(shù)： | 6/15頁(yè) |
| 文件大?。?/td> | 191K |
| 代理商： | AD8563ARMZ-R2 |
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AD8563
Preliminary Technical Data
THEORY OF OPERATION
The AD8563 is a precision current-mode correction
instrumentation amplifier capable of single-supply operation.
The current-mode correction topology results in excellent
accuracy, without the need for trimmed resistors on the die.
Rev. PrA | Page 6 of 15
Figure 2 shows a simplified diagram illustrating the basic
operation of the AD8563 (without correction). The circuit
consists of a voltage-to-current amplifier (M1 to M6), followed
by a current-to-voltage amplifier (R2 and A1). Application of a
differential input voltage forces a current through External
Resistor R1, resulting in conversion of the input voltage to a
signal current. Transistor M3 to Transistor M6 transfer twice
this signal current to the inverting input of the op amp A1.
Amplifier A1 and External Resistor R2 form a current-to-
voltage converter to produce a rail-to-rail output voltage at
V
OUT
.
Op amp A1 is a high precision, auto-zero amplifier. This
amplifier preserves the performance of the autocorrecting,
current-mode amplifier topology while offering the user a true
voltage-in, voltage-out instrumentation amplifier. Offset errors
are corrected internally.
An external reference voltage is applied to the non-inverting
input of A1 to set the output reference level. External Capacitor
C2 filters out correction noise.
The pin out of the AD8563 allows the user to access the signal
current from the output of the voltage-to-current converter
(Pin 5). The user can choose to use the AD8563 as a current-
output device instead of a voltage-output device. See Figure 7
for circuit connections.
HIGH PSR AND CMR
Common-mode rejection and power supply rejection indicate
the amount that the offset voltage of an amplifier changes when
its common-mode input voltage or power supply voltage changes.
The auto-correction architecture of the AD8563 continuously
corrects for offset errors, including those induced by changes in
input or supply voltage, resulting in exceptional rejection
performance. The continuous auto-correction provides great
CMR and PSR performances over the entire operating
temperature range (40°C to +125°C).
The parasitic resistance in series with R2 does not degrade
CMR but causes a small gain error and a very small offset error.
Therefore, an external buffer amplifier is not required to drive
the V
REF
pin to maintain excellent CMR performance. This
helps reduce system costs over conventional instrumentation
amplifiers.
1/f NOISE CORRECTION
Flicker noise, also known as 1/f noise, is noise inherent in the
physics of semiconductor devices and decreases 10 dB per
decade. The 1/f corner frequency of an amplifier is the frequency
at which the flicker noise is equal to the broadband noise of the
amplifier. At lower frequencies, flicker noise dominates causing
large errors in low frequency or dc applications.
Flicker noise is effectively visible as a slowly varying offset error,
which the auto-correction topology of the AD8563 reduces. This
allows the AD8563 to have lower noise near dc than standard
low noise instrumentation amplifiers.
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PDF描述 |
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| AD8563ARMZ-REEL | 1.8 V to 5 V Auto-Zero, In-Amp with Shutdown |
| AD8571ARM-R2 | Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers |
| AD8571ARM-REEL | Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers |
| AD8571ARMZ-R2 | Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers |
| AD8571ARMZ-REEL | Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8563ARMZ-REEL | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:1.8 V to 5 V Auto-Zero, In-Amp with Shutdown |
| AD8564 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Quad 7 ns Single Supply Comparator |
| AD8564_07 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Quad 7 ns Single Supply Comparator |
| AD8564AN | 功能描述:IC COMP QUAD 7NS ULT-FAST 16-DIP RoHS:否 類(lèi)別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:通用 元件數(shù):1 輸出類(lèi)型:CMOS，推挽式，滿(mǎn)擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類(lèi)型:表面貼裝 包裝:管件 其它名稱(chēng):Q3554586 |
| AD8564ANZ | 功能描述:IC COMP QUAD 7NS ULT FAST 16DIP RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:通用 元件數(shù):1 輸出類(lèi)型:CMOS，推挽式，滿(mǎn)擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類(lèi)型:表面貼裝 包裝:管件 其它名稱(chēng):Q3554586 |
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