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LT6402-20 Datasheet(PDF) 5 Page - Linear Technology

Part No. LT6402-20
Description  300MHz Low Distortion, Low Noise Differential Amplifier/ ADC Driver (AV = 20dB)
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT6402-20 Datasheet(HTML) 5 Page - Linear Technology

 
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5
640220fa
LT6402-20
FREQUENCY (MHz)
1
10
20
30
10
100
1000
64022 G01
0
5
15
25
–5
–10
UNFILTERED
FILTERED
VIN = 20mVP-P
UNFILTERED: RLOAD = 400Ω
FILTERED: RLOAD = 300Ω (EXTERNAL)
+ 100
Ω (INTERNAL, FILTERED OUTPUTS)
FREQUENCY (MHz)
1
20
25
30
35
10
100
1000
34022 G02
15
10
5
0
VIN = 20mVP-P
UNFILTERED OUTPUTS
0pF
1.6pF
5pF
10pF
FREQUENCY (MHz)
1
10
20
30
10
100
1000
64022 G03
0
5
15
25
–5
–10
UNFILTERED
FILTERED
VIN = 20mVP-P
UNFILTERED: RLOAD = 100Ω
FILTERED: RLOAD = 100Ω
(INTERNAL, FILTERED OUTPUTS)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: As long as output current and junction temperature are kept below
the Absolute Maximum Ratings, no damage to the part will occur.
Note 3: The LT6402 is guaranteed functional over the operating
temperature range of –40°C to 85°C.
Note 4: The LT6402C is guaranteed to meet specified performance from
0°C to 70°C. It is designed, characterized and expected to meet specified
performance from –40°C and 85°C but is not tested or QA sampled
at these temperatures. The LT6402I is guaranteed to meet specified
performance from –40°C to 85°C.
Note 5: Since the LT6402-20 is a feedback amplifier with low output
impedance, a resistive load is not required when driving an ADC.
Therefore, typical output power is very small. In order to compare the
LT6402-20 with typical gm amplifiers that require 50Ω output loading, the
LT6402-20 output voltage swing driving an ADC is converted to OIP3 and
P1dB as if it were driving a 50Ω load.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
25MHz Signal
Second/Third Harmonic Distortion
2VP-P Differential (+OUTFILTERED, –OUTFILTERED)
–80
dBc
2VP-P Differential (+OUT, –OUT)
–80
dBc
Third-Order IMD
2VP-P Differential Composite (+OUTFILTERED,
–OUTFILTERED), f1 = 24.5MHz, f2 = 25.5MHz
–86
dBc
2VP-P Differential Composite (+OUT, –OUT),
RL = 400Ω, f1 = 24.5MHz, f2 = 25.5MHz
–84
dBc
OIP325M
Output Third-Order Intercept
Differential (+OUTFILTERED, –OUTFILTERED),
f1 = 24.5MHz, f2 = 25.5MHz (Note 5)
46
dBm
NF
Noise Figure
Measured Using DC954A Demo Board
12.5
dB
en25M
Input Referred Noise Voltage Density
1.9
nV/√Hz
1dB Compression Point
RL = 100Ω (Note 5)
16.6
dBm
AC ELECTRICAL CHARACTERISTICS T
A = 25°C, VCCA = VCCB = VCCC = 5V,VEEA = VEEB = VEEC = 0V,
⎯E⎯N⎯A⎯B⎯L⎯E = 0.8V, +INA shorted to +INB (+IN), –INA shorted to –INB (–IN), VOCM = 2.2V, Input common mode voltage = 2.2V, no RLOAD
unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
Frequency Response
RLOAD = 400Ω
Frequency Response
RLOAD = 100Ω
Frequency Response vs
CLOAD, RLOAD = 400Ω


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