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OPA2830 Datasheet, PDF (19/43 Pages) National Semiconductor (TI) – Dual, Low-Power, Single-Supply, Wideband OPERATIONAL AMPLIFIER | |||
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OPA2830
www.ti.com.................................................................................................................................................. SBOS309D â AUGUST 2004 â REVISED AUGUST 2008
TYPICAL CHARACTERISTICS: VS = +3V (continued)
At TA = +25°C, G = +2V/V, and RL = 150⦠to VS/3, unless otherwise noted (see Figure 71).
HARMONIC DISTORTION vs LOAD RESISTANCE
â50
G = +2V/V
â55
2ndâHarmonic
â60
VO = 1VPP
f = 5MHz
See Figure 71
â65
â70
â75
3rdâHarmonic
â80
â85
â90
100
1k
Resistance (â¦)
Figure 57.
HARMONIC DISTORTION vs FREQUENCY
â55
â60 G = +2V/V
VO = 1VPP
â65 See Figure 71
2ndâHarmonic
RL = 500â¦
â70
â75
â80
â85
â90
â95
â100
0.1
2ndâHarmonic
RL = 150â¦
3rdâHarmonic
RL = 150â¦
3rdâHarmonic
RL = 500â¦
1
10
Frequency (MHz)
Figure 59.
RECOMMENDED RS vs CAPACITIVE LOAD
190
< 0.5dB Peaking Targeted
170
150
130
110
90
70
50
30
10
1
10
100
1k
Capacitive Load (pF)
Figure 61.
HARMONIC DISTORTION vs OUTPUT VOLTAGE
â30
G = +2V/V
â40
RL = 500â¦
f = 5MHz
See Figure 71
â50
Input Limited
â60
2ndâHarmonic
â70
3rdâHarmonic
â80
â90
0.1
1
10
Output Voltage Swing (VPP)
Figure 58.
TWO-TONE, 3RD-ORDER INTERMODULATION SPURIOUS
â40
â45 PI
â50
â55
â60
â65
1/2
50⦠O P A 2830
750â¦
750â¦
PO
500â¦
20MHz
â70
â75
10MHz
â80
â85
5MHz
â90
â95
â28 â26 â24 â22 â20 â18 â16 â14 â12 â10 â8
SingleâTone Load Power (dBm)
Figure 60.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
8
7
CL = 10pF
6
CL = 100pF
5
4
CL = 1000pF
3
2
1 VI
0
â1
â2
50⦠OPA2830
750â¦
RS
VO
CL 1kâ¦(1)
750â¦
NOTE: (1) 1k⦠is optional.
â3
1
10
100 200
Frequency (MHz)
Figure 62.
Copyright © 2004â2008, Texas Instruments Incorporated
Product Folder Link(s): OPA2830
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