參數(shù)資料
型號(hào)： CLC5612IMX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Dual, High Output, Programmable Gain Buffer
中文描述： DUAL BUFFER AMPLIFIER, PDSO8
封裝： PLASTIC, SOIC-8
文件頁(yè)數(shù)： 6/12頁(yè)
文件大小： 208K
代理商： CLC5612IMX
http://www.national.com
6
±5V Typical Channel Matching Performance
(A
v
= +2, R
L
= 100
,V
CC
= ± 5V, unless specified)
Channel Matching
M
Frequency (Hz)
1M
10M
100M
Channel 1
Channel 2
Input Referred Crosstalk
M
Frequency (Hz)
1M
10M
100M
-120
-100
-80
-60
-40
-20
V
o
= 1V
pp
Pulse Crosstalk
A
A
Time (10ns/div)
I
A
Active Output
Channel
Inactive Output
Channel
CLC5612 Operation
The CLC5612 is a current feedback buffer built in an
advanced complementary bipolar process.
CLC5612 operates from a single 5V supply or dual ±5V
supplies.
Operating from a single 5V supply, the
CLC5612 has the following features:
The
I
Gains of +1, -1, and 2V/V are achievable without
external resistors
I
Provides 100mA of output current while
consuming only 7.5mW of power
I
Offers low -79/-81dBc 2nd and 3rd harmonic
distortion
I
Provides BW > 50MHz and 1MHz distortion
< -75dBc at V
o
= 2V
pp
The CLC5612 performance is further enhanced in ±5V
supply applications as indicated in the
±5V Electrical
Characteristics
table and
±5V Typical Performance
plots.
If gains other than +1, -1, or +2V/V are required, then the
CLC5602 can be used. The CLC5602 is a current feed-
back amplifier with near identical performance and allows
for external feedback and gain setting resistors.
Current Feedback Amplifiers
Some of the key features of current feedback technology are:
I
Independence of AC bandwidth and voltage gain
I
Inherently stable at unity gain
I
Adjustable frequency response with feedback resistor
I
High slew rate
I
Fast settling
Current feedback operation can be described using a simple
equation. The voltage gain for a non-inverting or inverting
current feedback amplifier is approximated by Equation 1.
Equation 1
where:
I
A
v
is the closed loop DC voltage gain
I
R
f
is the feedback resistor
I
Z(j
ω
) is the CLC5612’s open loop
transimpedance gain
Z j
R
f
I
is the loop gain
The denominator of Equation 1 is approximately equal to
1 at low frequencies. Near the -3dB corner frequency, the
interaction between R
f
and Z(j
ω
) dominates the circuit
performance. The value of the feedback resistor has a
large affect on the circuits performance. Increasing R
f
has the following affects:
I
Decreases loop gain
I
Decreases bandwidth
I
Reduces gain peaking
I
Lowers pulse response overshoot
I
Affects frequency response phase linearity
V
V
A
1
R
Z(j )
o
in
v
f
=
+
ω
( )
CLC5612 Design Information
Closed Loop Gain Selection
The CLC5612 is a current feedback op amp with
R
f
= R
g
= 1k
on chip (in the package). Select from
three closed loop gains without using any external gain
or feedback resistors. Implement gains of +2, +1,
and -1V/V by connecting pins 2 and 3 (or 5 and 6) as
described in the chart below.
Gain
A
v
-1V/V
+1V/V
+2V/V
Input Connections
Non-Inverting (pins 3,5) Inverting (pins 2,6)
ground
input signal
input signal
input signal
NC (open)
ground
相關(guān)PDF資料
PDF描述
CLC5612IN Dual, High Output, Programmable Gain Buffer
CLC5612 Dual, High Output, Programmable Gain Buffer
CLC561 Wideband, Low Distortion DriveR-Amps
CLC561A8 Wideband, Low Distortion DriveR-Amps
CLC561AI Wideband, Low Distortion DriveR-Amps
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CLC5612IN 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual, High Output, Programmable Gain Buffer
CLC5612M WAF 制造商:Texas Instruments 功能描述:
CLC561A8 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Wideband, Low Distortion DriveR-Amps
CLC561A8C 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Feedback Operational Amplifier
CLC561AI 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Wideband, Low Distortion DriveR-Amps
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