LTC6400-26
5
640026fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
P1dB,140M
1dB Compression Point
RL = 375Ω (Notes 5, 7)
18.7
dBm
NF140M
Noise Figure
RL = 375Ω (Note 5)
6.6
dB
eN,140M
Input Referred Voltage Noise Density
Includes Resistors (Short Inputs)
1.4
nV/√Hz
eON,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
2VP-P,OUT, RL = 200Ω
–70/–59
dBc
2VP-P,OUT, No RL
–75/–71
dBc
IMD3,240M
Third Order Intermodulation
(f1 = 239.5MHz f2 = 240.5MHz)
2VP-P,OUT Composite, RL = 200Ω
–70
dBc
2VP-P,OUT Composite, No RL
–76
dBc
OIP3,240M
Third Order Output Intercept Point
(f1 = 239.5MHz f2 = 240.5MHz)
2VP-P,OUT Composite, No RL (Note 7)
42
dBm
P1dB,240M
1dB Compression Point
RL = 375Ω (Notes 5, 7)
18.1
dBm
NF240M
Noise Figure
RL = 375Ω (Note 5)
6.9
dB
eN,240M
Input Referred Voltage Noise Density
Includes Resistors (Short Inputs)
1.4
nV/√Hz
eON,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
2VP-P,OUT, RL = 200Ω
–66/–54
dBc
2VP-P,OUT, No RL
–76/–62
dBc
IMD3,300M
Third Order Intermodulation
(f1 = 299.5MHz f2 = 300.5MHz)
2VP-P,OUT Composite, RL = 200Ω
–66
dBc
2VP-P,OUT Composite, No RL
–71
dBc
OIP3,300M
Equivalent Third Order Output Intercept
Point
(f1 = 299.5MHz f2 = 300.5MHz)
2VP-P,OUT Composite, No RL (Note 7)
39.5
dBm
P1dB,300M
1dB Compression Point
RL = 375Ω (Notes 5, 7)
17.7
dBm
NF300M
Noise Figure
RL = 375Ω (Note 5)
7.6
dB
eN,300M
Input Referred Voltage Noise Density
Includes Resistors (Short Inputs)
1.5
nV/√Hz
eON,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
2VP-P,OUT Composite, RL = 375Ω
–68
–62
dBc
AC ELECTRICAL CHARACTERISTICS Specications are at T
A = 25°C. V
+ = 3V, V– = 0V, VOCM = 1.25V,
ENABLE = 0V, No RL 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 specied performance from
0°C to 70°C. It is designed, characterized and expected to meet specied
performance from –40°C to 85°C but is not tested or QA sampled at these
temperatures. The LTC6400I is guaranteed to meet specied 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. RL = 87.5Ω per output.
Note 7: Since the LTC6400-26 is a feedback amplier 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 ampliers that require 50
Ω output load, the LTC6400-26
output voltage swing driving a given RL is converted to OIP3 and P1dB as
if it were driving a 50
Ω load. Using this modied convention, 2VP-P is by
denition equal to 10dBm, regardless of actual RL.