2024年3月23日发(作者：晁温韦)
元器件交易网
LT6600-10
Very Low Noise, Differential
Amplifier and 10MHz Lowpass Filter
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Programmable Differential Gain via Two External
Resistors
Adjustable Output Common Mode Voltage
Operates and Specified with 3V, 5V, ±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
, 800Ω 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
®
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’s
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.
U
APPLICATIO S
s
s
s
s
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
0.1µF
R
IN
402Ω
1
7
0.01µF
V
IN
R
IN
402Ω
2
8
3
An 8192 Point FFT Spectrum
0
–10
5V
–20
–30
INPUT IS A 4.7MHz SINEWAVE
2V
P-P
f
SAMPLE
= 66MHz
F
R
E
Q
U
E
N
C
Y
(
d
B
)
–
V
MID
V
OCM
+
–
4
49.9Ω
49.9Ω
18pF
+
A
IN
LTC1748
V
CM
V
+
D
OUT
V
–
1µF
6600 TA01a
–40
–50
–60
–70
–80
–90
+
6
5
–
–100
–110
0
4812162024
FREQUENCY (MHz)
28
32
GAIN = 402Ω/R
IN
U
6600 TA01b
FEATURES
U
6600f
1
元器件交易网
LT6600-10
ABSOLUTE AXIU RATIGS
(Note 1)
WU
PACKAGE/ORDER IFORATIO
TOP VIEW
IN
–
1
V
OCM
2
V
+
3
OUT
+
4
8
7
6
5
IN
+
V
MID
V
–
OUT
–
U
Total 11V
Operating Temperature Range (Note 6)...–40°C to 85°C
Specified Temperature Range (Note 7)....–40°C to 85°C
150°C
Storage –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
The
q
denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. Unless otherwise specified V
S
= 5V (V
+
= 5V, V
–
= 0V), R
IN
= 402Ω, and R
LOAD
= 1k.
PARAMETER
Filter Gain, V
S
= 3V
CONDITIONS
V
IN
= 2V
P-P
, f
IN
= DC to 260kHz
V
IN
= 2V
P-P
, f
IN
= 1MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 5MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 8MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 10MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 30MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 50MHz (Gain Relative to 260kHz)
Filter Gain, V
S
= 5VV
IN
= 2V
P-P
, f
IN
= DC to 260kHz
V
IN
= 2V
P-P
, f
IN
= 1MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 5MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 8MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 10MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 30MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 50MHz (Gain Relative to 260kHz)
Filter Gain, V
S
= ±5V
Filter Gain, R
IN
= 100Ω, V
S
= 3V, 5V, ±5V
Filter Gain Temperature Coefficient (Note 2)
Noise
Distortion (Note 4)
V
IN
= 2V
P-P
, f
IN
= DC to 260kHz
V
IN
= 2V
P-P
, f
IN
= DC to 260kHz
f
IN
= 260kHz, V
IN
= 2V
P-P
Noise BW = 10kHz to 10MHz, R
IN
= 402Ω
1MHz, 2V
P-P
, R
L
= 800Ω
5MHz, 2V
P-P
, R
L
= 800Ω
Differential Output Swing
Input Bias Current
Measured Between Pins 4 and 5
Pin 7 Shorted to Pin 2
Average of Pin 1 and Pin 8
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
V
S
= 5V
V
S
= 3V
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
ELECTRICAL CHARACTERISTICS
2
U
W
W
W
ORDER PART
NUMBER
LT6600CS8-10
LT6600IS8-10
S8 PART MARKING
660010
600I10
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C, θ
JA
= 100°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
MIN
–0.4
–0.1
–0.4
–0.3
–0.2
TYP
0
0
–0.1
0.1
0.3
–28
–44
MAX
0.5
0.1
0.3
1
1.7
–25
0.5
0.1
0.3
0.9
1.4
–25
0.4
12.6
UNITS
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ppm/C
µV
RMS
dBc
dBc
dBc
dBc
V
P-P DIFF
V
P-P DIFF
µA
–0.5
–0.1
–0.4
–0.4
–0.3
0
0
–0.1
0.1
0.2
–28
–44
–0.6
11.4
–0.1
12
780
56
88
97
74
77
3.85
3.85
–85
5.0
4.9
–40
6600f
2024年3月23日发(作者：晁温韦)
元器件交易网
LT6600-10
Very Low Noise, Differential
Amplifier and 10MHz Lowpass Filter
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Programmable Differential Gain via Two External
Resistors
Adjustable Output Common Mode Voltage
Operates and Specified with 3V, 5V, ±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
, 800Ω 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
®
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’s
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.
U
APPLICATIO S
s
s
s
s
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
0.1µF
R
IN
402Ω
1
7
0.01µF
V
IN
R
IN
402Ω
2
8
3
An 8192 Point FFT Spectrum
0
–10
5V
–20
–30
INPUT IS A 4.7MHz SINEWAVE
2V
P-P
f
SAMPLE
= 66MHz
F
R
E
Q
U
E
N
C
Y
(
d
B
)
–
V
MID
V
OCM
+
–
4
49.9Ω
49.9Ω
18pF
+
A
IN
LTC1748
V
CM
V
+
D
OUT
V
–
1µF
6600 TA01a
–40
–50
–60
–70
–80
–90
+
6
5
–
–100
–110
0
4812162024
FREQUENCY (MHz)
28
32
GAIN = 402Ω/R
IN
U
6600 TA01b
FEATURES
U
6600f
1
元器件交易网
LT6600-10
ABSOLUTE AXIU RATIGS
(Note 1)
WU
PACKAGE/ORDER IFORATIO
TOP VIEW
IN
–
1
V
OCM
2
V
+
3
OUT
+
4
8
7
6
5
IN
+
V
MID
V
–
OUT
–
U
Total 11V
Operating Temperature Range (Note 6)...–40°C to 85°C
Specified Temperature Range (Note 7)....–40°C to 85°C
150°C
Storage –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
The
q
denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. Unless otherwise specified V
S
= 5V (V
+
= 5V, V
–
= 0V), R
IN
= 402Ω, and R
LOAD
= 1k.
PARAMETER
Filter Gain, V
S
= 3V
CONDITIONS
V
IN
= 2V
P-P
, f
IN
= DC to 260kHz
V
IN
= 2V
P-P
, f
IN
= 1MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 5MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 8MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 10MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 30MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 50MHz (Gain Relative to 260kHz)
Filter Gain, V
S
= 5VV
IN
= 2V
P-P
, f
IN
= DC to 260kHz
V
IN
= 2V
P-P
, f
IN
= 1MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 5MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 8MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 10MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 30MHz (Gain Relative to 260kHz)
V
IN
= 2V
P-P
, f
IN
= 50MHz (Gain Relative to 260kHz)
Filter Gain, V
S
= ±5V
Filter Gain, R
IN
= 100Ω, V
S
= 3V, 5V, ±5V
Filter Gain Temperature Coefficient (Note 2)
Noise
Distortion (Note 4)
V
IN
= 2V
P-P
, f
IN
= DC to 260kHz
V
IN
= 2V
P-P
, f
IN
= DC to 260kHz
f
IN
= 260kHz, V
IN
= 2V
P-P
Noise BW = 10kHz to 10MHz, R
IN
= 402Ω
1MHz, 2V
P-P
, R
L
= 800Ω
5MHz, 2V
P-P
, R
L
= 800Ω
Differential Output Swing
Input Bias Current
Measured Between Pins 4 and 5
Pin 7 Shorted to Pin 2
Average of Pin 1 and Pin 8
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
V
S
= 5V
V
S
= 3V
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
ELECTRICAL CHARACTERISTICS
2
U
W
W
W
ORDER PART
NUMBER
LT6600CS8-10
LT6600IS8-10
S8 PART MARKING
660010
600I10
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C, θ
JA
= 100°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
MIN
–0.4
–0.1
–0.4
–0.3
–0.2
TYP
0
0
–0.1
0.1
0.3
–28
–44
MAX
0.5
0.1
0.3
1
1.7
–25
0.5
0.1
0.3
0.9
1.4
–25
0.4
12.6
UNITS
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ppm/C
µV
RMS
dBc
dBc
dBc
dBc
V
P-P DIFF
V
P-P DIFF
µA
–0.5
–0.1
–0.4
–0.4
–0.3
0
0
–0.1
0.1
0.2
–28
–44
–0.6
11.4
–0.1
12
780
56
88
97
74
77
3.85
3.85
–85
5.0
4.9
–40
6600f