OPA4830 Datasheet, PDF (15/45 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 = +5V (continued)
At T_A = +25°C, G = +2V/V, R_F = 750Ω to V_S/2, and input V_CM = 2.5V, unless otherwise noted (see Figure 72).
INPUT VOLTAGE AND CURRENT NOISE DENSITY
100
CLOSED-LOOP OUTPUT IMPEDANCE vs FREQUENCY
100
10
Voltage Noise
(9.2nV/ÖHz)
10
1
Current Noise
(3.5pA/ÖHz)
1
10
100
1k
10k 100k
1M
10M
Frequency (Hz)
Figure 36.
130
120
110
100
90
80
70
60
50
40
30
20
10
1
RECOMMENDED R_S vs CAPACITIVE LOAD
0.1dB Peaking Targeted
10
100
1k
Capacitive Load (pF)
Figure 38.
OPEN-LOOP GAIN AND PHASE
80
0
70
-20
60
-40
20 log (A_OL)
50
-60
40
-80
30
20
Ð (A_OL)
-100
-120
10
-140
0
-160
-10
-180
-20
-200
100 1k 10k 100k 1M 10M 100M 1G
Frequency (Hz)
Figure 40.
0.1
0.01
1k
10k
100k
1M
10M
100M
Frequency (Hz)
Figure 37.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
8
7
C_L = 10pF
6
5
4
C_L = 1000pF
C_L = 100pF
3
2
1 _VI
0
-1
-2
1/4
50W OPA4830
750W
R_S
C_L
V_O
1kW⁽¹⁾
750W
NOTE: (1) 1kW is optional.
-3
1
10
100
300
Frequency (MHz)
Figure 39.
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-50
VOLTAGE RANGES vs TEMPERATURE
Most Positive Output Voltage
Most Positive Input Voltage
R_L = 150W
Least Positive Output Voltage
Least Positive Input Voltage
0
50
110
Ambient Temperature (10°C/div)
Figure 41.
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