LMH6503 Datasheet, PDF (7/33 Pages) National Semiconductor (TI) – Wideband, Low Power, Linear Variable Gain Amplifier

LMH6503
www.ti.com
SNOSA78E – OCTOBER 2003 – REVISED APRIL 2013
Typical Performance Charateristics
Unless otherwise specified: V_S = ±5V, 25°C, V_G = V_{G_MAX}, V_CM = 0V, R_F = 1kΩ, R_G = 174Ω, both inputs terminated in 50Ω, R_L
= 100Ω, Typical values, results referred to device output:
Small Signal Frequency Response (A_V = 2)
5
3
R_F = 920:, R_G = 820:
0
-3
-5
-8
R_F = 2.4k:, R_G = 2.1k:
-10
-13
-15
V_OUT = 0.5V_PP
-18 _{AVMAX = 2}
-20
1M
10M
100M
1G
FREQUENCY (Hz)
Figure 4.
Large Signal Frequency Response (A_V = 2)
5
90
GAIN
0
45
-5
0
PHASE
-10
-45
-15
-90
-20
V_OUT = 5V_PP
-25 A_VMAX = 2
-30 ^{RF = 2.4k:}
R_G = 2.15k:
-35
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 5.
-135
-180
-225
-270
1G
Frequency Response over Temperature (A_V = 10)
1
150
GAIN
0
100
-1
-40°C
85°C
50
25°C
-2
0
PHASE
-3
-40°C
-50
25°C
-4
-100
85°C
-5
-150
-6 ^{AVMAX = 10, VG = VGMAX}
-7 ^{GAIN/PHASE DATA}
NORMALIZED TO LOW
-8
FREQUENCY VALUE AT 25°C
-9
1k 10k 100k 1M 10M
100M
-200
-250
-300
-350
1G
FREQUENCY (Hz)
Figure 6.
Frequency Response for Various V_G (A_VMAX = 10)
1
GAIN
40
-1.0V
0
20
-1
1.2V
-0.4V 0
-2 ^PHASE
-20
1.2V
-3
-40
-0.4V
-4
-60
-1.0V
-5
-80
-6 _{AVMAX = 10}
-7 ^{GAIN NORMALIZED TO LOW}
FREQUENCY VALUE AT
-8 _{EACH VG}
-9
1k 10k 100k 1M 10M 100M
-100
-120
-140
-160
1G
FREQUENCY (Hz)
Figure 7.
Frequency Response for Various V_G (A_VMAX = 10) (±2.5V)
3
2
PHASE
1
-0.48V
40
20
0
0V
0
-20
GAIN
0.55V
-1
-40
-2
0V
-3 ^25°C
V_S = ±2.5V
-4 _{AVMAX = 10}
-0.48V
-5 ^{GAIN NORMALIZED TO}
LOW FREQUENCY
-6 _{VALUE AT EACH VG}
-7
1k 10k 100k 1M 10M
100M
-60
-80
-100
-120
-160
-7
1G
FREQUENCY (Hz)
Figure 8.
Small Signal Frequency Response
3
2 ^{VOUT = 0.5VPP}
270
A_VMAX RF(k:) ₂₂₅
1 GAIN
0
-1
100 750 ¹⁸⁰
10
1k
135
2
2.4k ₉₀
-2
100
45
-3
10
-4
2⁰
-45
-5
PHASE
-90
-6
-135
-7
-180
-8
SEE NOTE 12
-9
-225
-270
f (25 MHz/DIV)
Figure 9.
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