LMH6518_15 Datasheet, PDF (9/41 Pages) Texas Instruments – LMH6518 900 MHz, Digitally Controlled, Variable Gain Amplifier

LMH6518
www.ti.com
SNOSB21C – MAY 2008 – REVISED JULY 2013
Typical Performance Characteristics
Unless otherwise specified, 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 and Auxiliary Outputs), Main output
specification (Auxiliary is labeled “Auxiliary”), full bandwidth setting, gain = 18.8 dB (Preamp LG, 0 dB ladder attenuation), Full
Power setting ⁽¹⁾.
Response (LG, 0 dB)
5
Response (LG, 0 dB)
Full BW
0
750 MHz
-5
650 MHz
-10
350 MHz
200 MHz
-15
100 MHz
-20
20 MHz
-25
1
10
100
1G
FREQUENCY (MHz)
Figure 2.
Phase (LG, 0 dB)
0
Full BW
20 MHz
-50
100 MHz
750 MHz
-100
200 MHz
350 MHz
650 MHz
-150
-200
-250
Phase (LG, 0 dB)
-300
1
10
100
1G
FREQUENCY (MHz)
Figure 3.
Response (HG, 0 dB)
5
Response (HG, 0 dB)
Full BW
0
-5
750 MHz
650 MHz
-10
350 MHz
-15
200 MHz
-20
-25
1
100 MHz
20 MHz
10
100
1G
FREQUENCY (MHz)
Figure 4.
Small Signal Response (LG, 0 dB)
5 _{Response (LG, 0 dB)}
Full BW
V_OUT = 0.1 V_PP
0
-5
-10
-15
-20
-25
1
750 MHz
650 MHz
350 MHz
200 MHz
100 MHz
20 MHz
10
100
1G
FREQUENCY (MHz)
Figure 5.
Small Signal Response (HG, 0 dB)
5 _{Response (HG, 0 dB)}
Full BW
V_OUT = 0.1 V_PP
0
-5
750 MHz
650 MHz
-10
350 MHz
-15
200 MHz
100 MHz
-20
20 MHz
-25
1
10
100
1G
FREQUENCY (MHz)
Figure 6.
3
Full BW
2
1
Response
vs.
Gain
HG, 0 dB
HG, 20 dB
0
LG, 0 dB
-1
LG, 20 dB
-2
-3
-4
-5
-6
10
100
1G
FREQUENCY (MHz)
Figure 7.
(1) “Full Power” setting is with Auxiliary output turned on.
Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: LMH6518
Submit Documentation Feedback
9