OPA4830 Datasheet, PDF (19/45 Pages) National Semiconductor (TI) – Quad, Low-Power, Single-Supply, Wideband Operational Amplifier

OPA4830
www.ti.com.................................................................................................................................................... SBOS350A – DECEMBER 2006 – REVISED MAY 2008
TYPICAL CHARACTERISTICS: V_S = +3V (continued)
At T_A = +25°C, G = +2V/V, and R_L = 150Ω to V_S/3, unless otherwise noted (see Figure 73).
HARMONIC DISTORTION vs LOAD RESISTANCE
-50
G = +2V/V
-55
V_O = 1V_PP
2nd-Harmonic
f = 5MHz
-60
-65
-70
3rd-Harmonic
-75
-80
-85
100
1k
Resistance (W)
Figure 59.
HARMONIC DISTORTION vs FREQUENCY
-55
G = +2V/V
-60 V_O = 1V_PP
-65
-70
2nd-Harmonic
R_L = 500W
3rd-Harmonic
R_L = 150W
-75 ^2nd-Harmonic
R_L = 150W
-80
-85
-90
-95
-100
0.1
3rd-Harmonic
R_L = 500W
1
10
Frequency (MHz)
Figure 61.
RECOMMENDED R_S vs CAPACITIVE LOAD
190
0.1dB Peaking Targeted
170
150
130
110
90
70
50
30
10
1
10
100
1k
Capacitive Load (pF)
Figure 63.
HARMONIC DISTORTION vs OUTPUT VOLTAGE
-40
G = +2V/V
-45 _{RL = 500W}
-50 f = 5MHz
-55
-60
Input Limited
-65
-70
2nd-Harmonic
-75
-80
3rd-Harmonic
-85
-90
0.1
1
10
Output Voltage Swing (V_PP)
Figure 60.
TWO-TONE, 3RD-ORDER INTERMODULATION SPURIOUS
-40
-45 ^PI
-50
-55
-60
1/4
50W OPA4830
750W
750W
P_O
500W
20MHz
-65
-70
10MHz
-75
-80
5MHz
-85
-90
-26
-23
-20
-17
-14
-11
-8
Single-Tone Load Power (dBm)
Figure 62.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
8
7
C_L = 10pF
6
C_L = 100pF
5
4
C_L = 1000pF
3
2
1 V_I
0
-1
-2
1/4
50W OPA4830
750W
R_S
V_O
C_L
1kW⁽¹⁾
750W ^{NOTE: (1) 1kW is optional.}
-3
1
10
100 200
Frequency (MHz)
Figure 64.
Copyright © 2006–2008, Texas Instruments Incorporated
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