LT1817 datasheet(6/16 Pages) LINER

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LTC6400-14

640014fb

AC ELECTRICAL CHARACTERISTICS Speciﬁcations are at T

A = 25°C. V

+ = 3V, V– = 0V, VOCM = 1.25V,

ENABLE = 0V, No RL unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

300MHz Input Signal

HD2,300M/HD3,300M

Second/ Third-Order Harmonic

Distortion

2VP-P, OUT, RL = 200Ω

–61/–51

dBc

2VP-P, OUT, No RL

–61/–55

dBc

IMD3,300M

Third-Order Intermodulation

(f1 = 299.5MHz f2 = 300.5MHz)

2VP-P, OUT Composite, RL = 200Ω

–62

dBc

2VP-P, OUT Composite, No RL

–66

dBc

OIP3,300M

Third-Order Output Intercept Point

(f1 = 299.5MHz f2 = 300.5MHz)

2VP-P, OUT Composite, No RL (Note 7)

36.9

dBm

P1dB,300M

1dB Compression Point

RL = 375Ω (Notes 5, 7)

17.4

dBm

NF300M

Noise Figure

RL = 375Ω (Note 5)

8.2

eN, 300M

Input Referred Voltage Noise Density

Includes Resistors (Short Inputs)

2.5

nV/√Hz

eON, 300M

Output Referred Voltage Noise Density Includes Resistors (Short Inputs)

13.9

nV/√Hz

IMD3,280M/320M

Third-Order Intermodulation

(f1 = 280MHz f2 = 320MHz)

Measured at 360MHz

2VP-P, OUT Composite, RL = 375Ω

–63

–55

dBc

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 and LTC6400I are guaranteed functional over the

operating temperature range of –40°C to 85°C.

Note 4: The LTC6400C is guaranteed to meet speciﬁed performance from

0°C to 70°C. It is designed, characterized and expected to meet speciﬁed

performance from –40 to 85°C but is not tested or QA sampled at these

temperatures. The LTC6400I is guaranteed to meet speciﬁed 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.

Note 7: Since the LTC6400-14 is a feedback ampliﬁer 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

LTC6400-14 with ampliﬁers that require 50

Ω output load, the LTC6400-14

output voltage swing driving a given RL is converted to OIP3 and P1dB as

if it were driving a 50

Ω load. Using this modiﬁed convention, 2VP-P is by

deﬁnition equal to 10dBm, regardless of actual RL.

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