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THS4502 Datasheet, PDF (17/40 Pages) Texas Instruments – WIDEBAND, LOW-DISTORTION FULLY DIFFERENTIAL AMPLIFIERS | |||
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THS4502
THS4503
SLOS352D â APRIL 2002 â REVISED JANUARY 2004
TYPICAL CHARACTERISTICS (5 V Graphs)
HARMONIC DISTORTION
vs
OUTPUT VOLTAGE SWING
0
â10
Differential Input to
Differential Output
â20 Gain = 2
â30
RL = 800 â¦
Rf = 1.3 kâ¦
â40 f= 8 MHz
â50 VS = 5 V
HD3
â60
HD2
â70
â80
â90
â100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VO â Output Voltage Swing â V
Figure 68
0
â10
â20
â30
â40
â50
â60
â70
â80
â90
â100
0
HARMONIC DISTORTION
vs
LOAD RESISTANCE
Single-Ended Input to
Differential Output
Gain = 1
VO = 2 VPP
Rf = 499 â¦
f= 30 MHz
VS = 5 V
HD2
HD3
400
800
1200
RL â Load Resistance â â¦
1600
Figure 69
0
â10
â20
â30
â40
â50
â60
â70
â80
â90
â100
0
HARMONIC DISTORTION
vs
LOAD RESISTANCE
Differential Input to
Differential Output
Gain = 1
VO = 2 VPP
Rf = 499 â¦
f= 30 MHz
VS = 5 V
HD2
HD3
400
800
1200
RL â Load Resistance â â¦
1600
Figure 70
SLEW RATE
vs
DIFFERENTIAL OUTPUT VOLTAGE STEP
1600
Gain = 1
1400
1200
RL = 800 â¦
Rf = 499 â¦
VS = 5 V
1000
800
600
400
200
0
0 0.5 1 1.5 2 2.5 3 3.5 4
VO â Differential Output Voltage Step â V
Figure 71
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 72
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 73
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 74
REJECTION RATIOS
vs
FREQUENCY
90
80
PSRR+
70
60
50
40
PSRRâ
CMMR
30
20
10
0
RL = 800 â¦
VS = 5 V
â10
0.1
1
10
100
f â Frequency â MHz
Figure 75
REJECTION RATIOS
vs
CASE TEMPERATURE
120
PSRR+
100
CMMR
80
PSRRâ
60
40
20
RL = 800 â¦
VS = 5 V
0
â40â30â20â10 0 10 20 30 40 50 60 70 80 90
Case Temperature â °C
Figure 76
17
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