Datasheet

LMH6518
www.ti.com SNOSB21C –MAY 2008–REVISED JULY 2013
Electrical Characteristics
(1)
(continued)
Unless otherwise specified, all limits are ensured for T
A
= 25°C, Input CM = 2.5V, V
CM
= 1.2V, V
CM_Aux
= 1.2V, Single-ended
input drive, V
CC
= 5V, V
DD
= 3.3V, R
L
= 100Ω differential (both Main & Auxiliary Outputs), V
OUT
= 0.7 V
PP
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 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 %
t
s_1
Settling Time Main Output, ±0.5% 10
ns
t
s_2
Main Output, ±0.05% 14
t_recover Recovery Time
(5)
All Gains <5 ns
P
D
Propagation Delay V
OUT
= 0.7 V
PP
, All Gains 1.2 ns
P
D_VAR
Propagation Delay Variation Gain Varied 100 ps
Noise, Distortion, and RF Specifications
e
n_1
Input Noise Spectral Density Max Gain, 10 MHz 0.98 nV/√Hz
e
n_2
Preamp LG and 0 dB Ladder, 4.1
10 MHz
e
no_1
RMS Output Noise Max Gain, 100 Hz to 400 MHz 1.7 mV
e
no_2
Preamp LG, 0 dB Ladder, 100 Hz 940 μV
to 400 MHz
NF_1 Noise Figure Max Gain, R
S
= 50Ω each Input, 3.8
10 MHz
dB
NF_2 Preamp LG, 0 dB Ladder, R
S
= 50Ω 13.5
each Input, 10 MHz
HD2/ HD3_1 2
nd
/ 3
rd
Harmonic Distortion
(6)
Main Output, 100 MHz, All Gains −50/ −53
HD2/ HD3_2 Auxiliary Output, 100 MHz, All Gains −48/ −50
dBc
HD2/ HD3_3 Main Output, 250 MHz, All Gains −44/ −50
HD2/ HD3_4 Auxiliary Output, 250 MHz, All Gains −42/ −42
IMD3 Intermodulation Distortion
(6)
f = 250 MHz, Main output −65 dBc
OIP3_1 Intermodulation Intercept
(6)
Main Output, 250 MHz 26 dBm
P_1dB_main −1 dB Compression Main Output, 250 MHz, 0 dB Ladder 1.8
Main Output, 250 MHz, 20 dB Ladder 1.0
P_1dB_aux Auxiliary Output, 250 MHz, 1.65
V
PP
0 dB Ladder
Auxiliary Output, 250 MHz, 1.0
20 dB Ladder
Gain Parameters
A
V_DIFF_MAX
Max Gain 38.1 38.8 39.5 dB
A
V_DIFF_MIN
Min Gain −1.91 −1.16 −0.40 dB
(3) Limits are 100% production tested at 25°C unless otherwise specified. Limits over the operating temperature range are ensured 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 ensured on shipped
production material.
(5) Recovery time” is the slower of the Main and Auxiliary outputs. Output swing of 700 mV
PP
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 V
PP
(±7 mV).
(6) Distortion data taken under single ended input condition.
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