LT6600CS8-15 Linear Technology, LT6600CS8-15 Datasheet

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LT6600CS8-15

Manufacturer Part Number
LT6600CS8-15
Description
IC,Differential Amplifier,SINGLE,SOP,8PIN,PLASTIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT6600CS8-15

Lead Free Status / Rohs Status
Not Compliant

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Part Number
Manufacturer
Quantity
Price
Part Number:
LT6600CS8-15
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT6600CS8-15
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT6600CS8-15#PBF
Manufacturer:
LT
Quantity:
3 599
Part Number:
LT6600CS8-15#TRPBF
Manufacturer:
LT/凌特
Quantity:
20 000
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APPLICATIONS
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L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
FEATURES
V
IN
Programmable Differential Gain via Two External
Resistors
Adjustable Output Common Mode Voltage
Operates and Specifi ed with 3V, 5V, ±5V Supplies
0.5dB Ripple 4th Order Lowpass Filter with 15MHz
Cutoff
76dB S/N with 3V Supply and 2V
Low Distortion, 2V
Fully Differential Inputs and Outputs
Compatible with Popular Differential Amplifi er
Pinouts
SO-8 Package
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 Amplifi ers
0.01μF
1MHz: 86dBc 2nd, 90dBc 3rd
10MHz: 63dBc 2nd, 69dBc 3rd
536Ω
R
IN
536Ω
R
IN
GAIN = 536Ω/R
1
7
2
8
LT6600-15
V
V
+
MID
OCM
3
6
3V
+
0.1μF
4
5
IN
P-P
, 800Ω Load, V
25Ω
25Ω
5.6pF
5.6pF
5.6pF
P-P
A
+
IN
Output
S
V
= 3V
CM
LTC2249
3V
V
+
2.2μF
D
Amplifi er and 15MHz Lowpass Filter
V
OUT
660015 TA01a
DESCRIPTION
The LT
4th order 15MHz lowpass fi lter approximating a Chebyshev
frequency response. Most differential amplifi ers require
many precision external components to tailor gain and
bandwidth. In contrast, with the LT6600-15, two external
resistors program differential gain, and the fi lter’s 15MHz
cutoff frequency and passband ripple are internally set.
The LT6600-15 also provides the necessary level shifting
to set its output common mode voltage to accommodate
the reference voltage requirements of A/Ds.
Using a proprietary internal architecture, the LT6600-15
integrates an antialiasing fi lter and a differential amplifi er/
driver without compromising distortion or low noise perfor-
mance. At unity gain the measured in band signal-to-noise
ratio is an impressive 76dB. 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 LT6600-15 also features low voltage operation. The
differential design provides outstanding performance for
a 2V
3V supply.
The LT6600-15 is packaged in an SO-8 and is pin compat-
ible with standalone differential amplifi ers.
P-P
®
Very Low Noise, Differential
6600-15 combines a fully differential amplifi er with a
signal level while the part operates with a single
–120
–100
–110
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
An 8192 Point FFT Spectrum
10
FREQUENCY (MHz)
20
INPUT 10.7MHz
2V
f
SAMPLE
P-P
30
LT6600-15
= 80MHz
660015 TA01b
40
660015fb
1

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LT6600CS8-15 Summary of contents

Page 1

... Networking or Cellular Base Station Applications n High Speed Test and Measurement Equipment n Medical Imaging n Drop-In Replacement for Differential Amplifi ers L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION LT6600-15 3V 0.1μF R ...

Page 2

... LT6600IS8-15#PBF LT6600IS8-15#TRPBF LEAD BASED FINISH TAPE AND REEL LT6600CS8-15 LT6600CS8-15#TR LT6600IS8-15 LT6600IS8-15#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: ELECTRICAL CHARACTERISTICS range, otherwise specifi ...

Page 3

ELECTRICAL CHARACTERISTICS range, otherwise specifi cations are 25°C. Unless otherwise specifi PARAMETER Filter Gain Temperature Coeffi cient (Note 2) Noise Distortion (Note 4) Differential Output Swing Input Bias Current Input Referred Differential Offset Differential ...

Page 4

LT6600-15 TYPICAL PERFORMANCE CHARACTERISTICS Amplitude Response 10 0 –10 –20 –30 – –50 GAIN = 25°C A –60 0 FREQUENCY (MHz) 660015 G01 Passband Gain and Delay ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Signal Level –40 3RD HARMONIC 10MHz INPUT R = 800Ω –50 EACH OUTPUT GAIN = 1 – 25°C A –70 2ND HARMONIC –80 10MHz INPUT 3RD –90 ...

Page 6

LT6600-15 PIN FUNCTIONS – and IN (Pins 1, 8): Input Pins. Signals can be ap- plied to either or both input pins through identical external resistors The DC gain from differential inputs to the IN differential ...

Page 7

APPLICATIONS INFORMATION Interfacing to the LT6600-15 The LT6600-15 requires two equal external resistors set the differential gain to 536Ω/R + fi lter are the voltages V and external components, Figure 1. The difference between + ...

Page 8

LT6600-15 APPLICATIONS INFORMATION In Figure 3 the LT6600-15 is providing 12dB of gain. The gain resistor has an optional 62pF in parallel to improve the passband fl atness near 15MHz. The common mode output voltage is set to 2V. Use ...

Page 9

APPLICATIONS INFORMATION 20 1dB COMPRESSION POINTS 0 3RD HARMONIC –20 85°C –40 3RD HARMONIC 25°C –60 2ND HARMONIC 85°C –80 2ND HARMONIC, 25°C –100 1MHz INPUT LEVEL (V Figure 6. Output Level vs Input Level, ...

Page 10

LT6600-15 APPLICATIONS INFORMATION Noise The noise performance of the LT6600-15 can be evaluated with the circuit of Figure 7. Given the low noise output of the LT6600-15 and the 6dB attenuation of the transformer coupling network necessary to ...

Page 11

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... S/N with 3V Supply, SO-8 82dB S/N with 3V Supply, SO-8 82dB S/N with 3V Supply, SO-8 76dB S/N with 3V Supply, SO-8 www.linear.com ● 3V 0.1μF INA LTC2299 INB 660015 TA02 = 2.375V to 12.6V S 660015fb LT 0409 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 ...

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