LT6402-6 datasheet(5/16 Pages) LINER

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64026fa

LT6402-6

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.

Note 4: The LT6402C 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 LT6402I is guaranteed to meet speciﬁed

performance from –40°C to 85°C.

Note 5: Since the LT6402-6 is a feedback ampliﬁer 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

LT6402-6 with typical gm ampliﬁers that require 50Ω output loading, the

LT6402-6 output voltage swing driving an ADC is converted to OIP3 and

P1dB as if it were driving a 50Ω load.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

25MHz Signal

Second/Third Harmonic Distortion

2VP-P Differential (+OUTFILTERED, –OUTFILTERED)

–84

dBc

2VP-P Differential (+OUT, –OUT)

–69

dBc

Third-Order IMD

2VP-P Differential Composite (+OUTFILTERED,

–OUTFILTERED), f1 = 24.5MHz, f2 = 25.5MHz

–88

dBc

2VP-P Differential Composite (+OUT, –OUT),

RL = 400Ω, f1 = 24.5MHz, f2 = 25.5MHz

–67

dBc

OIP325M

Output Third-Order Intercept

Differential (+OUTFILTERED, –OUTFILTERED),

f1 = 24.5MHz, f2 = 25.5MHz (Note 5)

dBm

Noise Figure

Measured Using DC954A Demo Board

12.6

en25M

Input Referred Noise Voltage Density

3.9

nV/√Hz

1dB Compression Point

RL = 100Ω (Note 5)

17.2

dBm

TA = 25°C, VCCA = VCCB = VCCC = 5V,VEEA = VEEB = VEEC = 0V,

⎯E⎯N⎯A⎯B⎯L⎯E = 0.8V, +INA shorted to +INB (+IN), –INA shorted to –INB (–IN), VOCM = 2.2V, Input common mode voltage = 2.2V, no RLOAD

unless otherwise noted.

Frequency Response,

RLOAD = 400Ω

Frequency Response vs CLOAD,

RLOAD = 400Ω

Frequency Response,

RLOAD = 100Ω

AC ELECTRICAL CHARACTERISTICS

TYPICAL PERFORMANCE CHARACTERISTICS

FREQUENCY (MHz)

–5

100

1000

64026 G01

–15

–10

–20

–25

UNFILTERED

VIN = 100mVP-P

UNFILTERED: RLOAD = 400Ω

FILTERED: RLOAD = 300Ω

(EXTERNAL) + 100Ω

(INTERNAL, FILTERED OUTPUTS)

FILTERED

FREQUENCY (MHz)

100

1000

64026 G02

–5

–10

–15

–20

0pF

1.6pF

5pF

10pF

FREQUENCY (MHz)

–3

100

1000

64026 G03

–6

–9

–12

–15

–18

–21

–24

–27

–30

UNFILTERED OUTPUTS

FILTERED OUTPUTS

VIN = 100mVP-P

UNFILTERED: RLOAD = 100Ω

FILTERED: RLOAD = 100Ω

(INTERNAL, FILTERED OUTPUTS)

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