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參數(shù)資料
| 型號： | 660025 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 差分放大器 |
| 英文描述： | Very Low Noise, Differential Amplifier and 2.5MHz Lowpass Filter |
| 中文描述： | 極低噪聲，差分放大器和2.5MHz的低通濾波器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 177K |
| 代理商： | 660025 |
LT6600-2.5
1
660025i
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Programmable Differential Gain via Two External
Resistors
I
Adjustable Output Common Mode Voltage
I
Operates and Specified with 3V, 5V,
±
5V Supplies
I
0.5dB Ripple 4th Order Lowpass Filter with 2.5MHz
Cutoff
I
86dB S/N with 3V Supply and 1V
RMS
Output
I
Low Distortion, 1V
RMS
, 800
Load
1MHz: 95dBc 2nd, 88dBc 3rd
I
Fully Differential Inputs and Outputs
I
Compatible with Popular Differential Amplifier
Pinouts
I
SO-8 Package
Very Low Noise, Differential
Amplifier and 2.5MHz Lowpass Filter
June 2003
I
High Speed ADC Antialiasing and DAC Smoothing in
Networking or Cellular Base Station Applications
I
High Speed Test and Measurement Equipment
I
Medical Imaging
I
Drop-in Replacement for Differential Amplifiers
The LT
6600-2.5 combines a fully differential amplifier
with a 4th order 2.5MHz lowpass filter approximating a
Chebyshev frequency response. Most differential amplifi-
ers require many precision external components to tailor
gain and bandwidth. In contrast, with the LT6600-2.5, two
external resistors program differential gain, and the filter’s
2.5MHz cutoff frequency and passband ripple are inter-
nally set. The LT6600-2.5 also provides the necessary level
shifting to set its output common mode voltage to accom-
modate the reference voltage requirements of A/Ds.
Using a proprietary internal architecture, the LT6600-2.5
integrates an antialiasing filter and a differential amplifier/
driver without compromising distortion or low noise
performance. At unity gain the measured in band
signal-to-noise ratio is an impressive 86dB. At higher
gains the input referred noise decreases so the part can
process smaller input differential signals without signifi-
cantly degrading the output signal-to-noise ratio.
The LT6600-2.5 also features low voltage operation. The
differential design provides outstanding performance for
a 4V
P-P
signal level while the part operates with a single 3V
supply. The LT6600-2.5 is available in an SO-8 package.
For similar devices with higher cutoff frequency, refer to
the LT6600-10 and LT6600-20 data sheets.
Amplitude Response
DESCRIPTIOU
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
Final Electrical Specifications
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1580
1580
0.01
μ
F
0.1
μ
F
LT6600-2.5
5V
–
+
V
IN+
V
IN–
V
OUT–
660025 TA01a
V
OUT+
3
4
1
7
2
8
5
6
FREQUENCY (Hz)
100k
–36
G
–24
–12
0
12
1M
10M
50M
660025 TA01b
–48
–60
–84
–96
–72
V
S
=
±
2.5V
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