LMH6504 Datasheet, PDF (3/29 Pages) National Semiconductor (TI) – Wideband, Low Power, Variable Gain Amplifier

LMH6504
www.ti.com
SNOSA96D – NOVEMBER 2003 – REVISED MARCH 2013
Electrical Characteristics⁽¹⁾
Unless otherwise specified, all limits are specified for T_A = 25°C, V_S = ±5V, A_VMAX = 9.7 V/V, R_F = 1 kΩ, R_G = 100Ω,
V_IN = ±0.1V, R_L = 100Ω, V_G = +2V. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min ⁽²⁾
Typ ⁽²⁾
Max ⁽²⁾
Frequency Domain Response
BW
-3dB Bandwidth
V_OUT < 1 V_PP
150
V_OUT < 4 V_PP, A_VMAX = 100
58
GF
Gain Flatness
V_OUT < 1 V_PP
0.9V ≤ V_G ≤ 2V, ±0.2 dB
40
Att Range
Flat Band (Relative to Max Gain)
Attenuation Range ⁽³⁾
±0.2 dB Flatness, f < 30 MHz
±0.1 dB Flatness, f < 30 MHz
26
9.5
BW
Control
Gain control Bandwidth
V_G = 1V ⁽⁴⁾
150
CT (dB) Feed-through
V_G = 0V, 30 MHz
(Output/Input)
−53
f < 10 MHz
80
GR
Gain Adjustment Range
f < 30 MHz
73
Time Domain Response
t_r, t_f
Rise and Fall Time
0.5V Step
2.1
OS %
Overshoot
20
SR
Slew Rate ⁽⁵⁾
4V Step, Non Inverting
4V Step, Inverting
800
1500
Distortion & Noise Performance
HD2
2^nd Harmonic Distortion
−47
HD3
3^rd Harmonic Distortion
2V_PP, 20 MHz
–55
THD
Total Harmonic Distortion
−45
En tot
Total Equivalent Input Noise
f > 1 MHz, R_SOURCE = 50Ω
4.4
I_N
Input Noise Current
f > 1 MHz
2.6
DG
Differential Gain
f = 4.43 MHz, R_L = 100Ω
0.45
DP
Differential Phase
0.13
Units
MHz
MHz
dB
MHz
dB
dB
ns
%
V/μs
dBc
nV/√Hz
pA/√Hz
%
deg
(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 T_J = T_A. No parametric performance is indicated in the electrical tables under conditions of
internal self-heating where T_J > T_A.
(2) 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 on shipped production material.
(3) Flat Band Attenuation (Relative To Max Gain) Range Definition: Specified as the attenuation range from maximum which allows gain
flatness specified (either ±0.2dB or ±0.1dB), relative to A_VMAX gain. For example, for f < 30 MHz, here are the Flat Band Attenuation
ranges:±0.2 dB: 19.7 dB down to -6.3 dB = 26 dB range±0.1 dB: 19.7 dB down to 10.2 dB = 9.5 dB range
(4) Gain control frequency response schematic:
R_F
1 k:
+0.2 V_DC
+V_IN
+
R₁
LMH6504
50:
-
R_OUT
50:
PORT 2
R_L
R_G
V_G
50:
100:
C₁
+5V
R_F IN
0.01 PF
R_P1
R_T
PORT 1
50:
1V DC
10 k:
-5V
(5) Slew rate is the average of the rising and falling slew rates.
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