LT6600-10
Very Low Noise, Differential
Amplifier and 10MHz Lowpass Filter
FEATURES
s
s
s
s
DESCRIPTIO
s
s
s
s
s
Programmable Differential Gain via Two External
Resistors
Adjustable Output Common Mode Voltage
Operates and Specified with 3V, 5V,
鹵5V
Supplies
0.5dB Ripple 4th Order Lowpass Filter with 10MHz
Cutoff
82dB S/N with 3V Supply and 2V
P-P
Output
Low Distortion, 2V
P-P
, 800鈩?Load
1MHz: 88dBc 2nd, 97dBc 3rd
5MHz: 74dBc 2nd, 77dBc 3rd
Fully Differential Inputs and Outputs
SO-8 Package
Compatible with Popular Differential Amplifier
Pinouts
The LT
廬
6600-10 combines a fully differential amplifier
with a 4th order 10MHz 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 LT6600-10, two
external resistors program differential gain, and the filter鈥檚
10MHz cutoff frequency and passband ripple are internally
set. The LT6600-10 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 LT6600-10
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 82dB. 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 LT6600-10 also features low voltage operation. The
differential design provides outstanding performance for
a 2V
P-P
signal level while the part operates with a single 3V
supply.
For similar devices with other cutoff frequencies, refer to
the LT6600-20 and LT6600-2.5.
APPLICATIO S
s
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High Speed ADC Antialiasing and DAC Smoothing in
Networking or Cellular Base Station Applications
High Speed Test and Measurement Equipment
Medical Imaging
Drop-in Replacement for Differential Amplifiers
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
LT6600-10
5V
0.1碌F
R
IN
402鈩?1
7
0.01碌F
V
IN
R
IN
402鈩?/div>
2
8
3
An 8192 Point FFT Spectrum
0
鈥?0
鈥?0
5V
鈥?0
INPUT IS A 4.7MHz SINEWAVE
2V
P-P
f
SAMPLE
= 66MHz
FREQUENCY (dB)
鈥?/div>
V
MID
V
OCM
+
鈥?/div>
4
49.9鈩?/div>
18pF
+
A
IN
LTC1748
V
CM
V
+
D
OUT
V
鈥?/div>
1碌F
鈥?0
鈥?0
鈥?0
鈥?0
鈥?0
鈥?0
49.9鈩?/div>
5
+
6
鈥?/div>
鈥?00
鈥?10
6600 TA01a
GAIN = 402鈩?R
IN
0
U
4
8
12 16 20 24
FREQUENCY (MHz)
28
32
6600 TA01b
U
U
6600f
1
LT6600IS8-10 產(chǎn)品屬性
LT6600-10
100
集成電路 (IC)
Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
-
差分
1
差分
-
-
-
40µA
8000µV
36mA
-
3 V ~ 11 V，±1.5 V ~ 5.5 V
-40°C ~ 85°C
表面貼裝
8-SOIC（0.154"，3.90mm 寬）
8-SO
管件
LT6600IS8-10相關(guān)型號(hào)PDF文件下載
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