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參數(shù)資料
| 型號(hào)： | CLC5612 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual, High Output, Programmable Gain Buffer |
| 中文描述： | 雙路，高輸出，可編程增益緩沖器 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 208K |
| 代理商： | CLC5612 |
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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CLC5612IM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CLC5612IMX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 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 |
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