LTC6412CUFPBF datasheet(7/24 Pages) LINER

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LTC6412

6412f

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. RF input power rating is guaranteed by design and

engineering characterization, but not production tested. The absolute

maximum continuous RF input power shall not exceed +15dBm

Note 2: The LTC6412C/LTC6412I are guaranteed functional over the

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

Note 3: The LTC6412C 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 LT6412I is guaranteed to meet speciﬁed

performance from –40°C to 85°C.

Note 4: Power gain is deﬁned at ZSOURCE = 50Ω and ZLOAD = 200Ω.

Voltage gain for this test condition is 6dB higher than the stated power

gain.

Note 5: en can be calculated from 50Ω NF with the formula:

en = √{4kT(50)(10NF/10 – 1)}

where

en = Input referred voltage noise in V/√Hz

NF = 50Ω noise ﬁgure in dB

k = Boltzmann’s constant = 1.38 • 10–23J/°K

T = Absolute temperature in °K = °C + 273

Note 6: P1dB compression of the output ampliﬁer cannot be achieved

in the minimum gain state while complying with the absolute maximum

rating for input RF power.

AC ELECTRICAL CHARACTERISTICS The l denotes speciﬁcations that apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. Typical AC electrical performance measured in demo board DC1464A

(Figure 3, Test Circuit A) unless otherwise noted. Default operating conditions are VCC = 3.3V, EN = 0.8V, SHDN = 2.2V, +VG tied to VREF

(negative gain slope mode), and ZSOURCE = ZLOAD = 50Ω unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

380MHz Signal

GMAX

Maximum Gain

–VG = 0V, Test Circuit B

GMIN

Minimum Gain

–VG = 1.2V, Test Circuit B

–14

GRANGE

Gain Range

GMAX-GMIN

IM3

Third-Order Intermodulation

f1 = 379.5MHz, f2 = 380.5MHz,

POUT = –6dBm/Tone, –VG = 0V to 1.0V

–72

dBc

OIP3

Output Third-Order Intercept

f1 = 379.5MHz, f2 = 380.5MHz,

POUT = –6dBm/Tone, –VG = 0V to 1.0V

dBm

P1dBGMAX

Output 1dB Compression Point at Max Gain

–VG = 0V (Note 6)

dBm

NFGMAX

Noise Figure at Maximum Gain

–VG = 0V (Note 5)

10.5

NFGMIN

Noise Figure at Minimum Gain

–VG = 1.2V (Note 5)

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