LMH6518SQE datasheet(3/40 Pages) TI1

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LMH6518

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SNOSB21A – MAY 2008 – REVISED OCTOBER 2008

Operating Ratings

(1)

Supply Voltage

VCC = 5V (±5%)

VDD = 3.3V (±5%)

Temperature Range

−40°C to 85°C

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications, see the

Electrical Characteristics tables.

Thermal Properties

Temperature Range (1)

−40°C to 85°C

Junction-to-Ambient

Thermal Resistance (

θJA), WQFN

(1)

40°C/W

(1)

The maximum power dissipation is a function of TJ(MAX), θJA and TA. The maximum allowable power dissipation at any ambient

temperature is PD = (TJ(MAX) – TA)/ θJA. All numbers apply for package soldered directly into a 2 layer PC board with zero air flow.

Package should be soldered unto a 6.8 mm2 copper area as shown in the “recommended land pattern” shown in the package drawing.

Electrical Characteristics

(1)

Unless otherwise specified, all limits are guaranteed for TA = 25°C, Input CM = 2.5V, VCM = 1.2V, VCM_Aux = 1.2V, Single-

ended input drive, VCC = 5V, VDD = 3.3V, RL = 100Ω differential (both Main & Auxiliary Outputs), VOUT = 0.7 VPP differential

(both Main & Auxiliary Outputs), both Main and Auxiliary Output Specifications, full bandwidth setting, gain = 18.8 dB (Preamp

LG, 0 dB ladder attenuation), Full Power setting

(2). Electrical Characteristics Definition of Terms and Specifications for

abbreviations used in the datasheet. Boldface limits apply at the temperature extremes.

Symbol

Parameter

Condition

Min(3)

Typ(4)

Max(3)

Units

Dynamic Performance

LSBW

−3 dB Bandwidth

All Gains

900

MHz

Peaking

All Gains

1

dB

GF_0.1 dB

±0.1 dB Gain Flatness

All Gains

150

MHz

GF_1 dB

±1 dB Gain Flatness

All Gains

400

MHz

TRS

Rise Time

460

ps

TRL

Fall Time

450

OS

Overshoot

Main Output

9

%

ts_1

Settling Time

Main Output, ±0.5%

10

ns

ts_2

Main Output, ±0.05%

14

t_recover

Recovery Time(5)

All Gains

<5

ns

PD

Propagation Delay

VOUT = 0.7 VPP, All Gains

1.2

ns

PD_VAR

Propagation Delay Variation

Gain Varied

100

ps

Noise, Distortion, and RF Specifications

en_1

Input Noise Spectral Density

Max Gain, 10 MHz

0.98

nV/

√Hz

en_2

Preamp LG and 0 dB Ladder,

4.1

10 MHz

eno_1

RMS Output Noise

Max Gain, 100 Hz to 400 MHz

1.7

mV

eno_2

Preamp LG, 0 dB Ladder, 100 Hz

940

μV

to 400 MHz

(1)

Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very

limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under

conditions of internal self-heating where TJ > TA.

(2)

“Full Power” setting is with Auxiliary output turned on.

(3)

Limits are 100% production tested at 25°C unless otherwise specified. Limits over the operating temperature range are guaranteed

through correlation using Statistical Quality Control (SQC) methods.

(4)

Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary

over time and will also depend on the application and configuration. The typical values are not tested and are not guaranteed on

shipped production material.

(5)

Recovery time” is the slower of the Main and Auxiliary outputs. Output swing of 700 mVPP shifted up or down by 50% (0.35V) by

introducing an offset. Measured values correspond to the time it takes to return to within ±1% of 0.7 VPP (±7 mV).

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