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LMH6503MAX Datasheet, PDF (4/33 Pages) Texas Instruments – LMH6503 Wideband, Low Power, Linear Variable Gain Amplifier | |||
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LMH6503
SNOSA78E â OCTOBER 2003 â REVISED APRIL 2013
www.ti.com
Electrical Characteristics(1)
Unless otherwise specified, all limits ensured for TJ = 25°C, VS = ±5V, AV(MAX) = 10, VCM = 0V, RF = 1kâ¦, RG = 174â¦, VIN_DIFF
= ±0.1V, RL = 100â¦, VG = +1V. Boldface limits apply at the temperature extremes.
Parameter
Test Conditions
Min (2)
Typ (2)
Max (2)
Units
Frequency Domain Response
BW
-3dB Bandwidth
GF
Gain Flatness
Att Range Flat Band (Relative to Max Gain)
Attenuation Range(3)
BW
Control
Gain Control Bandwidth
VOUT < 0.5PP
VOUT < 0.5PP, AV(MAX) = 100
VOUT < 0.5VPP,
â1V < VG < 1V, ±0.2dB
±0.2dB Flatness, f < 30MHZ
±0.1dB, f < 30MHZ
VG = 0V(4)
135
MHz
50
40
MHz
20
MHz
6.6
100
MHz
PL
Linear Phase Deviation
DC to 60MHz
1.6
deg
G Delay Group Delay
DC to 130MHz
2.6
ns
CT (dB) Feed-through
VG = â1.2V, 30MHz (Output
Referred)
â48
dB
GR
Gain Adjustment Range
f < 10MHz
f < 30MHz
79
dB
68
Time Domain Response
tr , tf
OS%
SR
Rise and Fall Time
Overshoot
Slew Rate
0.5V Step
0.5V Step
4V Step(5)
2.2
10
1800
ns
%
V/µs
ÎG Rate Gain Change Rate
VIN = 0.3V, 10%â90% of final
output
4.6
dB/ns
Distortion & Noise performance
HD2
2nd Harmonic Distortion
HD3
3rdHarmonic Distortion
THD
Total Harmonic Distortion
En tot
Total Equivalent Input Noise
2VPP, 20MHz
2VPP, 20MHz
2VPP, 20MHz
1MHz to 150MHz
â60
dBc
â61
dBc
â57
dBc
6.6
nV/âHz
In
Input Noise Current
DG
Differential Gain
1MHz to 150MHz
f = 4.43MHz, RL = 150â¦, Neg.
Sync
2.4
pA/âHz
0.15
%
DP
Differential Phase
f = 4.43MHz, RL = 150â¦, Neg.
0.22
deg
Sync
(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 ensured specification of parametric performance is indicated in the electrical
tables under conditions of internal self-heating where TJ > TA.
(2) Typical values represent the most likely parametric norm. Bold numbers refer to over temperature limits.
(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 AVMAX gain. For example, for f<30MHz, here are the Flat Band Attenuation
ranges:±0.2dB:
10V/V down to 1V/V=20dB range±0.1dB:
10V/V down to 4.7V/V=6.5dB range
(4) Gain Control Frequency Response Schematic:
RF
910:
+0.2VDC
+VIN
R1
50:
RG
820:
+
LMH6503
-VIN
R2
50:
RF IN
-2
VG
C1
0.01PF
RT
0V
PORT 1 50:
DC
ROUT
50:
PORT 2
RL
50:
+5V
RP1
10k:
-5V
(5) Slew Rate is the average of the rising and falling rates.
4
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