OPA2830_08 Datasheet, PDF (16/41 Pages) Burr-Brown (TI) – Dual, Low-Power, Single-Supply, Wideband OPERATIONAL AMPLIFIER

OPA2830
SBOS309C – AUGUST 2004 – REVISED MARCH 2006
www.ti.com
TYPICAL CHARACTERISTICS: V_S = +5V (continued)
At T_A = +25°C, G = +2V/V, R_F = 750Ω, R_L = 150Ω to V_S/2, and input V_CM = 2.5V, unless otherwise noted (see Figure 70).
INPUT VOLTAGE AND CURRENT NOISE DENSITY
100
CLOSED-LOOP OUTPUT IMPEDANCE vs FREQUENCY
100
10
Voltage Noise
(9.2nV/√Hz)
10
1
Current Noise
(3.5pA/√Hz)
1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Figure 35.
RECOMMENDED R_S vs CAPACITIVE LOAD
130
120
< 0.5dB Peaking Targeted
110
100
90
80
70
60
50
40
30
20
10
1
10
100
1k
Capacitive Load (pF)
Figure 37.
80
70
60
50
40
30
20
10
0
−10
−20
100
OPEN-LOOP GAIN AND PHASE
180
160
140
20 log (A_OL)
120
100
∠ (A_OL)
80
60
40
20
0
−20
1k 10k 100k 1M 10M 100M 1G
Frequency (Hz)
Figure 39.
0.1
0.01
1k
10k
100k
1M
10M
100M
Frequency (Hz)
Figure 36.
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
1/2
50Ω OPA2830
750Ω
R_S
CL
VO
1kΩ(1)
750Ω
NOTE: (1) 1kΩis optional.
−3
1
10
100
300
Frequency (MHz)
Figure 38.
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 = 150Ω
Least Positive Output Voltage
Least Positive Input Voltage
0
50
110
Ambient Temperature (10_C/div)
Figure 40.
16
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