LMH6515 Datasheet, PDF (13/31 Pages) National Semiconductor (TI) – 600 MHz, Digital Controlled, Variable Gain Amplifier

LMH6515
www.ti.com
SNOSAX4C – AUGUST 2007 – REVISED MARCH 2013
TYPICAL PERFORMANCE CHARACTERISTICS
16 dB Gain Step with Latch Pin Low^{VCC = 5V (continued)}
Switching Gain Pin 4
3
8 dB Gain Step with Latch Pin Low
Switching Gain Pin 3
3
2
2
GAIN BIT 4
1
0
GAIN BIT 3
1
0
0.6
0.6
0.3
V_OUT
0
0.3
V_OUT
0
-0.3
-0.3
-0.6
0 10 20 30 40 50 60 70 80 90 100
TIME (ns)
Figure 32.
-0.6
0 10 20 30 40 50 60 70 80 90 100
TIME (ns)
Figure 33.
4 dB Gain Step Using Latch Pin
3
2
LATCH
1
0
0.6
V_OUT
0.3
0
-0.3
-0.6
0 10 20 30 40 50 60 70 80 90 100
TIME (ns)
Figure 34.
Power On Timing, Maximum Gain
0.4
6
V⁺
0.3
5
0.2
4
0.1
3
V_OUT
0
2
-0.1
1
-0.2
0
-0.3 _{f = 250 MHz}
ENVELOPE DISPLAYED
-0.4
-10 -5 0 5 10 15 20 25 30
TIME (Ps)
Figure 35.
Power On Timing, Minimum Gain
0.4
6
V⁺
0.3
5
0.2
4
0.1
3
V_OUT
0
2
-0.1
1
-0.2
0
-0.3 _{f = 250 MHz}
ENVELOPE DISPLAYED
-0.4
-10 -5 0 5 10 15 20 25 30
TIME (Ps)
Figure 36.
Power Off Timing, Maximum Gain
0.4
6
f = 250 MHz
0.3
ENVELOPE DISPLAYED ₅
0.2
4
0.1
V_OUT
3
0
2
-0.1
1
-0.2
0
V⁺
-0.3
-0.4
-10 -5 0 5 10 15 20 25 30
TIME (Ps)
Figure 37.
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