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參數(shù)資料
| 型號： | OPA675 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Wideband Switched-Input Operational Amplifier(寬帶轉(zhuǎn)換輸入運算放大器) |
| 中文描述： | 寬帶開關(guān)輸入運算放大器（寬帶轉(zhuǎn)換輸入運算放大器） |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 198K |
| 代理商： | OPA675 |
OPA675/676
8
B
Select
A
Select
–
Q7
Q8
Q1
Q2
A
Q3
Q4
B
+ –
+
Q5
Q6
+V
CC
Bias
Comp
I
TAIL
–V
CC
Out
+V
CC
ECL
Out
TTL
In
ECL
Threshold
FIGURE 1. OPA675 Simplified Circuit Diagram.
FPO
FIGURE 3. 1% Settling Time.
FIGURE 2. Internal OPA676 TTL Logic Level Shifter.
FPO
350mV is typically required to switch between inputs. This
logic input sensitivity allows simpler high-speed logic driver
circuitry and it minimizes digital noise coupling into adja-
cent wideband analog circuitry and allows single ended ECL
inputs to be used with V
BB
applied to the other input.
The OPA675 and OPA676 are designed to be frequency
compensated by a single capacitor connected from pin 5 to
ground. Recommended compensation is shown in
Typical
Performance Curves. A small variable capacitor may be
trimmed for best bandwidth, settling time, and gain peaking.
This amplifier is designed for optimum performance in gains
of 5V/V to 20V/V, but it can also be used over a far wider
range of gains with excellent results. Closed-loop gain/phase
(Bode) plots are shown in the Typical Performance Curves.
OFFSET TRIM
Input offset voltage is low enough for many video applica-
tions. If desired, offset voltage can be trimmed with a 1k
potentiometer connected to +V
CC
. Trimming offset voltage
in this manner will effect both input A and input B;
independent control of input offset will require that trim
adjust current be summed into one or both inputs. This
technique is shown in a few applications circuits on the pages
to follow.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA676 | Wideband Switched-Input Operational Amplifier(寬帶轉(zhuǎn)換輸入運算放大器) |
| OPA676JG | Wideband Switched-Input OPERATIONAL AMPLIFIER |
| OPA676KG | Wideband Switched-Input OPERATIONAL AMPLIFIER |
| OPA676SG | Wideband Switched-Input OPERATIONAL AMPLIFIER |
| OPA703NA | CMOS, Rail-to-Rail, I/O OPERATIONAL AMPLIFIERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA675/OPA676 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:OPA675. OPA676 - DISCONTINUED PRODUCT. No longer recommended for new design. |
| OPA675JG | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wideband Switched-Input OPERATIONAL AMPLIFIER |
| OPA675KG | 制造商: 功能描述: 制造商:undefined 功能描述: |
| OPA675SG | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wideband Switched-Input OPERATIONAL AMPLIFIER |
| OPA676 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wideband Switched-Input OPERATIONAL AMPLIFIER |
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