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參數(shù)資料
| 型號： | LTC6087HDD#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP CMOS DUAL R-R 10-DFN |
| 標準包裝： | 121 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 7.2 V/µs |
| 增益帶寬積： | 14MHz |
| 電流 - 輸入偏壓： | 1pA |
| 電壓 - 輸入偏移： | 330µV |
| 電流 - 電源： | 1.05mA |
| 電流 - 輸出 / 通道： | 45mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 10-DFN-EP（3x3） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1322 (CN2011-ZH PDF) |
LTC6087/LTC6088
9
60878fc
pin Functions
OUT: Amplifier Output.
–IN: Inverting Input.
+IN: Noninverting Input.
V+: Positive Supply.
V–: Negative Supply.
SHDNA: Shutdown Pin of Amplifier A, active low and only
available with the LTC 6087DD. An internal current source
pulls the pin to V+ when floating.
SHDNB: Shutdown Pin of Amplifier B, active low and only
available with the LTC 6087DD. An internal current source
pulls the pin to V+ when floating.
NC: Not internally connected
Exposed Pad: Connected to V–.
Rail-to-Rail Input
TheinputstageofLTC6087/LTC6088combinesbothPMOS
and NMOS differential pairs, extending its input common
modevoltagetobothpositiveandnegativesupplyvoltages.
At high input common mode range, the NMOS pair is on.
At low common mode range, the PMOS pair is on. The
transition happens when the common voltage is between
1.3V and 0.9V below the positive supply.
Achieving Low Input Bias Current
The DD and DHC packages are leadless and make contact
to the PCB beneath the package. Solder flux used during
the attachment of the part to the PCB can create leakage
current paths and can degrade the input bias current per-
formance of the part. All inputs are susceptible because
the backside paddle is connected to V– internally. As the
input voltage or V– changes, a leakage path can be formed
and alter the observed input bias current. For lowest bias
current use the LTC6087/LTC6088 in the leaded MSOP/
GN package. With fine PCB design rules, you can also
provide a guard ring around the inputs.
For example, in high source impedance applications such
as pH probes, photo diodes, strain gauges, et cetera, the
low input bias current of these parts requires a clean
board layout to minimize additional leakage current into a
high impedance signal node. A mere 100G
Ω of PC board
resistance between a 5V supply trace and input trace near
ground potential adds 50pA of leakage current. This leak-
age is far greater than the bias current of the operational
amplifier. A guard ring around the high impedance input
traces driven by a low impedance source equal to the
input voltage prevents such leakage problems. The guard
ring should extend as far as necessary to shield the high
impedance signal from any and all leakage paths. Figure
1 shows the use of a guard ring in a unity-gain configura-
tion. In this case the guard ring is connected to the output
and is shielding the high impedance noninverting input
from V–. Figure 2 shows the inverting gain configuration.
Figure 1. Sample Layout. Unity-Gain Configuration. Using Guard
Ring to Shield High Impedance Input from Board Leakage
Figure 2. Sample Layout. Inverting Gain Configuration. Using
Guard Ring to Shield High Impedance Input from Board Leakage
applications inForMation
LTC6087
R
OUT
IN–
IN+
V–
LEAKAGE
CURRENT
NO LEAKAGE
CURRENT
GUARD
RING
NO SOLDER MASK
OVER THE GUARD RING
60878 F01
LTC6087
60878 F02
R
OUT
IN–
IN+
V–
VIN
GND
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC6087HDD-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad 14MHz, Rail-to-Rail CMOS Amplifi ers |
| LTC6087HMS8 | 制造商:Linear Technology 功能描述:OP Amp Dual GP R-R I/O 5.5V 8-Pin MSOP 制造商:Linear Technology 功能描述:SC-Amps/Industrial, DUAL 14MHz, RAIL-TORAIL CMOS AMPLIFIERS |
| LTC6087HMS8#PBF | 功能描述:IC AMP CMOS DUAL R-R 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| LTC6087HMS8#TR | 制造商:Linear Technology 功能描述:OP Amp Dual GP R-R I/O 5.5V 8-Pin MSOP T/R |
| LTC6087HMS8#TRPBF | 功能描述:IC AMP DUAL CMOS R-R 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:帶卷 (TR) |
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