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THS4505 Datasheet, PDF (11/38 Pages) Texas Instruments – WIDEBAND, LOW-DISTORTION, FULLY DIFFERENTIAL AMPLIFIERS | |||
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TYPICAL CHARACTERISTICS (±5 V Graphs) (continued)
THS4504
THS4505
SLOS363C â AUGUST 2002 â REVISED MARCH 2004
THIRD-ORDER OUTPUT INTERCEPT
POINT
vs
FREQUENCY
60
Gain = 1
50
Rf = 499 â¦
VO = 2 VPP
VS = ± 5 V
40
200 kHz Tone Spacing
Normalized to 50 â¦
30
20 Normalized to 200 â¦
10
RL = 800 â¦
200 kHz Tone Spacing
0
0
20
40
60
80 100
f â Frequency â MHz
Figure 10.
SETTLING TIME
3
Rising Edge
2
Gain = 1
1
RL = 800 â¦
Rf = 499 â¦
0
f= 1 MHz
VS = ±5 V
â1
Falling Edge
â2
â3
0 5 10 15 20 25 30 35 40
t â Time â ns
Figure 13.
SLEW RATE
vs
DIFFERENTIAL OUTPUT VOLTAGE
STEP
2000
1800
1600
1400
Gain = 1
RL = 800 â¦
Rf = 499 â¦
VS = ±5 V
Fall
Rise
1200
1000
800
600
400
200
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO â Differential Output Voltage Step â V
Figure 11.
LARGE-SIGNAL TRANSIENT
RESPONSE
2
1.5
1
0.5
0
â0.5
â1
Gain = 1
RL = 800 â¦
Rf = 499 â¦
tr/tf = 300 ps
VS = ±5 V
â1.5
â2
â100 0
100 200 300
t â Time â ns
400 500
Figure 14.
OVERDRIVE RECOVERY
5
2.5
Gain = 4
4
RL = 800 â¦
2
3
Rf = 499 â¦
1.5
Overdrive = 4.5 V
2
VS = ±5 V
1
1
0.5
0
0
â1
â0.5
â2
â1
â3
â1.5
â4
â2
â5
â2.5
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
t â Time â µs
Figure 16.
OVERDRIVE RECOVERY
6
3
Gain = 4
5 RL = 800 â¦
4 Rf = 499 â¦
2
3 Overdrive = 5.5 V
2 VS = ±5 V
1
1
0
0
â1
â2
â1
â3
â4
â2
â5
â6
â3
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
t â Time â µs
Figure 17.
SETTLING TIME
1.5
Rising Edge
1
0.5
0
â0.5
â1
Gain = 1
RL = 800 â¦
Rf = 499 â¦
f= 1 MHz
VS = ±5 V
Falling Edge
â1.5
0
50 100 150 200 250 300
t â Time â ns
Figure 12.
SMALL-SIGNAL TRANSIENT
RESPONSE
0.4
0.3
0.2
0.1
0
â0.1
Gain = 1
RL = 800 â¦
Rf = 499 â¦
tr/tf = 300 ps
VS = ±5 V
â0.2
â0.3
â0.4
â100 0
100 200 300 400 500
t â Time â ns
Figure 15.
VOLTAGE AND CURRENT NOISE
vs
FREQUENCY
100
Vn
10
In
1
0.01 0.1
1
10 100 1000 10 k
f â Frequency â kHz
Figure 18.
11
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