LTC6400-26
5
640026fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
P
1dB,140M
1dB Compression Point R
L
= 375Ω (Notes 5, 7) 18.7 dBm
NF
140M
Noise Figure R
L
= 375Ω (Note 5) 6.6 dB
e
N,140M
Input Referred Voltage Noise Density Includes Resistors (Short Inputs) 1.4 nV/√Hz
e
ON,140M
Output Referred Voltage Noise Density Includes Resistors (Short Inputs) 28 nV/√Hz
240MHz Input Signal
HD2,240M/
HD3,240M
Second/Third Order Harmonic Distortion 2V
P-P,OUT
, R
L
= 200Ω –70/–59 dBc
2V
P-P,OUT
, No R
L
–75/–71 dBc
IMD3,240M Third Order Intermodulation
(f1 = 239.5MHz f2 = 240.5MHz)
2V
P-P,OUT
Composite, R
L
= 200Ω –70 dBc
2V
P-P,OUT
Composite, No R
L
–76 dBc
OIP3,240M Third Order Output Intercept Point
(f1 = 239.5MHz f2 = 240.5MHz)
2V
P-P,OUT
Composite, No R
L
(Note 7) 42 dBm
P
1dB,240M
1dB Compression Point R
L
= 375Ω (Notes 5, 7) 18.1 dBm
NF
240M
Noise Figure R
L
= 375Ω (Note 5) 6.9 dB
e
N,240M
Input Referred Voltage Noise Density Includes Resistors (Short Inputs) 1.4 nV/√Hz
e
ON,240M
Output Referred Voltage Noise Density Includes Resistors (Short Inputs) 28 nV/√Hz
300MHz Input Signal
HD2,300M/
HD3,300M
Second/Third Order Harmonic Distortion 2V
P-P,OUT
, R
L
= 200Ω –66/–54 dBc
2V
P-P,OUT
, No R
L
–76/–62 dBc
IMD3,300M Third Order Intermodulation
(f1 = 299.5MHz f2 = 300.5MHz)
2V
P-P,OUT
Composite, R
L
= 200Ω –66 dBc
2V
P-P,OUT
Composite, No R
L
–71 dBc
OIP3,300M Equivalent Third Order Output Intercept
Point
(f1 = 299.5MHz f2 = 300.5MHz)
2V
P-P,OUT
Composite, No R
L
(Note 7) 39.5 dBm
P
1dB,300M
1dB Compression Point R
L
= 375Ω (Notes 5, 7) 17.7 dBm
NF
300M
Noise Figure R
L
= 375Ω (Note 5) 7.6 dB
e
N,300M
Input Referred Voltage Noise Density Includes Resistors (Short Inputs) 1.5 nV/√Hz
e
ON,300M
Output Referred Voltage Noise Density Includes Resistors (Short Inputs) 30 nV/√Hz
IMD3,280M/320M Third Order Intermodulation
(f1 = 280MHz f2 = 320MHz) Measured at
360MHz
2V
P-P,OUT
Composite, R
L
= 375Ω –68 –62 dBc
AC ELECTRICAL CHARACTERISTICS
Specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
OCM
= 1.25V,
ENABLE = 0V, No R
L
unless otherwise noted.
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: Input pins (+IN, –IN) are protected by steering diodes to either
supply. If the inputs go beyond either supply rail, the input current should
be limited to less than 10mA.
Note 3: The LTC6400C is guaranteed functional over the operating
temperature range of –40°C to 85°C.
Note 4: The LTC6400C 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 to 85°C but is not tested or QA sampled at these
temperatures. The LTC6400I is guaranteed to meet specifi ed performance
from –40°C to 85°C.
Note 5: Input and output baluns used. See Test Circuit A.
Note 6: Measured using Test Circuit B. R
L
= 87.5Ω per output.
Note 7: Since the LTC6400-26 is a feedback amplifi er with low output
impedance, a resistive load is not required when driving an AD converter.
Therefore, typical output power is very small. In order to compare the
LTC6400-26 with amplifi ers that require 50Ω output load, the LTC6400-26
output voltage swing driving a given R
L
is converted to OIP
3
and P
1dB
as
if it were driving a 50Ω load. Using this modifi ed convention, 2V
P-P
is by
defi nition equal to 10dBm, regardless of actual R
L
.
