LMH6518_15 Datasheet, PDF (17/41 Pages) Texas Instruments – LMH6518 900 MHz, Digitally Controlled, Variable Gain Amplifier

LMH6518
www.ti.com
SNOSB21C – MAY 2008 – REVISED JULY 2013
Typical Performance Characteristics (continued)
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⁾.
Filter BW
vs.
Gain
Output
vs.
Input
25
20
HG
1600
1500
-40°C
Main or Auxiliary Output
LG, 20 dB
15
10
LG
5
750 MHz
0 _{350 MHz}
750 MHz
650 MHz
350 MHz
1400
25°C, 85°C
1300
1200
1100
25°C, 85°C
1000
+OUT
-OUT
-5
650 MHz
-10
-5 0 5 10 15 20 25 30 35 40
900
-40°C
800
-1 -0.6 -0.2 0.2 0.6
1
GAIN (dB)
Figure 50.
DELTA-V_IN (V)
Figure 51.
1800
-40°C
1600
25°C
Output
vs.
Input
Main or Auxiliary Output
LG, 0 dB
1400 _85°C
1200
1000
-40°C
800
+OUT
-OUT
25°C, 85°C
600
-100 -60 -20
20
60 100
DELTA-V_IN (mV)
Figure 52.
1600
1500
-40°C
Output
vs.
Input
Main or Auxiliary Output
HG, 20 dB
1400
25°C, 85°C
1300
+OUT
1200
1100
25°C, 85°C
1000
-OUT
900
-40°C
800
-100 -60 -20
20
60 100
DELTA-V_IN (mV)
Figure 53.
1800
-40°C
1600
25°C
Output
vs.
Input
Main or Auxiliary Output
HG, 0 dB
1400
85°C
1200
+OUT
1000
-40°C
-OUT
800
25°C, 85°C
600
-10
-6
-2
2
6
10
DELTA-V_IN (mV)
Figure 54.
Overdrive Recovery Time (Return to Zero)
1.5
0 dB Ladder Attenuation
50% Overdrive
1.0
Preamp HG or LG
0.5
0
-0.5
-1.0
-1.5
0
100 200 300 400 500
TIME (ns)
Figure 55.
Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: LMH6518
Submit Documentation Feedback
17