LT6402 Linear Technology Corporation, LT6402 Datasheet - Page 5

• Manufacturer Part Number: LT6402
• Description: 300mhz Low Distortion, Low Noise Differential Ampli?er/ Adc Driver Av = 20db
• Manufacturer: Linear Technology Corporation

AC ELECTRICAL CHARACTERISTICS
⎯ E ⎯ N ⎯ A ⎯ B ⎯ L ⎯ E = 0.8V, +INA shorted to +INB (+IN), –INA shorted to –INB (–IN), V
unless otherwise noted.
SYMBOL
25MHz Signal
OIP3
NF
e
TYPICAL PERFORMANCE CHARACTERISTICS
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.
n25M
–10
25M
30
25
20
15
10
–5
5
0
1
Frequency Response
R
V
UNFILTERED: R
FILTERED: R
+ 100Ω (INTERNAL, FILTERED OUTPUTS)
LOAD
IN
= 20mV
= 400Ω
PARAMETER
Second/Third Harmonic Distortion
Third-Order IMD
Output Third-Order Intercept
Noise Figure
Input Referred Noise Voltage Density
1dB Compression Point
UNFILTERED
P-P
FILTERED
LOAD
FREQUENCY (MHz)
10
LOAD
= 300Ω (EXTERNAL)
= 400Ω
100
64022 G01
1000
35
30
25
20
15
10
5
0
CONDITIONS
2V
2V
2V
–OUTFILTERED), f1 = 24.5MHz, f2 = 25.5MHz
2V
R
Differential (+OUTFILTERED, –OUTFILTERED),
f1 = 24.5MHz, f2 = 25.5MHz (Note 5)
Measured Using DC954A Demo Board
R
1
Frequency Response vs
C
L
L
V
UNFILTERED OUTPUTS
LOAD
P-P
P-P
P-P
P-P
IN
= 400Ω, f1 = 24.5MHz, f2 = 25.5MHz
= 100Ω (Note 5)
= 20mV
Differential (+OUTFILTERED, –OUTFILTERED)
Differential (+OUT, –OUT)
Differential Composite (+OUTFILTERED,
Differential Composite (+OUT, –OUT),
, R
0pF
1.6pF
5pF
10pF
LOAD
P-P
FREQUENCY (MHz)
10
T
A
= 25°C, V
= 400Ω
Note 4: The LT6402C is guaranteed to meet specifi ed performance from
0°C to 70°C. It is designed, characterized and expected to meet specifi ed
performance from –40°C and 85°C but is not tested or QA sampled
at these temperatures. The LT6402I is guaranteed to meet specifi ed
performance from –40°C to 85°C.
Note 5: Since the LT6402-20 is a feedback amplifi er 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 g
LT6402-20 output voltage swing driving an ADC is converted to OIP3 and
P1dB as if it were driving a 50Ω load.
OCM
100
CCA
= 2.2V, Input common mode voltage = 2.2V, no R
= V
34022 G02
CCB
1000
= V
CCC
m
amplifi ers that require 50Ω output loading, the
= 5V,V
–10
30
25
20
15
10
–5
5
0
1
Frequency Response
R
V
UNFILTERED: R
FILTERED: R
(INTERNAL, FILTERED OUTPUTS)
LOAD
IN
EEA
MIN
= 20mV
= V
= 100Ω
UNFILTERED
P-P
EEB
FILTERED
LOAD
FREQUENCY (MHz)
10
12.5
16.6
LOAD
TYP
–80
–80
–86
–84
1.9
= V
46
LT6402-20
= 100Ω
= 100Ω
EEC
= 0V,
MAX
100
LOAD
64022 G03
640220fa
nV/√Hz
UNITS
5
dBm
dBm
1000
dBc
dBc
dBc
dBc
dB