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| 型號： | LTC1992CMS8 |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 18/42頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP/DVR I/O FULLY DIFF 8-MSOP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 放大器類型： | 差分 |
| 電路數(shù)： | 1 |
| 輸出類型： | 差分，滿擺幅 |
| 轉(zhuǎn)換速率： | 1.5 V/µs |
| 增益帶寬積： | 3.2MHz |
| 電流 - 輸入偏壓： | 2pA |
| 電壓 - 輸入偏移： | 250µV |
| 電流 - 電源： | 700µA |
| 電流 - 輸出 / 通道： | 30mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 11 V，±1.35 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 管件 |
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LTC1992 Family
25
1992fb
BLOCK DIAGRAMS (1992-X)
–
+
+VS
–IN
VMID
+IN
–VS
+VS
–VS
+OUT
–OUT
VOCM
200k
RIN
RFB
RIN
RFB
4
5
2
6
1
3
7
8
1992-X BD
PART
LTC1992-1
LTC1992-2
LTC1992-5
LTC1992-10
RIN
30k
15k
RFB
30k
60k
150k
APPLICATIONS INFORMATION
Theory of Operation
The LTC1992 family consists of five fully differential, low
power amplifiers. The LTC1992 is an unconstrained fully
differential amplifier. The LTC1992-1, LTC1992-2, LTC1992-
5 and LTC1992-10 are fixed gain blocks (with gains of
1, 2, 5 and 10 respectively) featuring precision on-chip
resistors for accurate and ultra stable gain.
In many ways, a fully differential amplifier functions much
like the familiar, ubiquitous op amp. However, there are
several key areas where the two differ. Referring to Figure 1,
an op amp has a differential input, a high open-loop gain
and utilizes negative feedback (through resistors) to set
the closed-loop gain and thus control the amplifier’s gain
with great precision. A fully differential amplifier has all of
these features plus an additional input and a complemen-
tary output. The complementary output reacts to the input
signal in the same manner as the other output, but in the
opposite direction. Two outputs changing in an equal but
opposite manner require a common reference point (i.e.,
opposite relative to what?). The additional input, the VOCM
pin, sets this reference point. The voltage on the VOCM input
directly sets the output signal’s common mode voltage and
allows the output signal’s common mode voltage to be
set completely independent of the input signal’s common
mode voltage. Uncoupling the input and output common
mode voltages makes signal level shifting easy.
For a better understanding of the operation of a fully dif-
ferential amplifier, refer to Figure 2. Here, the LTC1992
functional block diagram adds external resistors to real-
ize a basic gain block. Note that the LTC1992 functional
block diagram is not an exact replica of the LTC1992
circuitry. However, the Block Diagram is correct and is
a very good tool for understanding the operation of fully
differential amplifier circuits. Basic op amp fundamentals
together with this block diagram provide all of the tools
needed for understanding fully differential amplifier circuit
applications.
The LTC1992 Block Diagram has two op amps, two sum-
ming blocks (pay close attention the signs) and four resis-
tors. Two resistors, RMID1 and RMID2, connect directly to
the VMID pin and simply provide a convenient mid-supply
reference. Its use is optional and it is not involved in the
operation of the LTC1992’s amplifier. The LTC1992 functions
through the use of two servo networks each employing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1992CMS8#PBF | 功能描述:IC AMP/DVR I/O FULLY DIFF 8-MSOP 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)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT |
| LTC1992CMS8#TR | 功能描述:IC AMP DIFF I/O ADJ OUT 8-MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)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(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:2pA 電壓 - 輸入偏移:1000µV 電流 - 電源:85µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 6 V 工作溫度:-40°C ~ 125°C 安裝類型: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-SOICN 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:680 (CN2011-ZH PDF) 其它名稱:MCP6L04T-E/SLCT |
| LTC1992CMS8#TRPBF | 功能描述:IC AMP/DVR I/O FULLY DIFF 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)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(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:2pA 電壓 - 輸入偏移:1000µV 電流 - 電源:85µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 6 V 工作溫度:-40°C ~ 125°C 安裝類型: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-SOICN 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:680 (CN2011-ZH PDF) 其它名稱:MCP6L04T-E/SLCT |
| LTC1992HMS8 | 功能描述:IC AMP DIFF I/O ADJ OUT 8-MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)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(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:2pA 電壓 - 輸入偏移:1000µV 電流 - 電源:85µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 6 V 工作溫度:-40°C ~ 125°C 安裝類型: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-SOICN 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:680 (CN2011-ZH PDF) 其它名稱:MCP6L04T-E/SLCT |
| LTC1992HMS8#PBF | 功能描述:IC AMP/DVR I/O FULLY DIFF 8-MSOP 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)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT |
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