OPA830 Datasheet, PDF (12/31 Pages) Burr-Brown (TI) – Low-Power, Single-Supply, Wideband Operational Amplifier

OPA830
SBOS263B − AUGUST 2004 − REVISED JANUARY 2005
TYPICAL CHARACTERISTICS: V_S = +5V (continued)
At TA = 25°C, G = +2, RF = 750Ω, RL = 150Ω to VS/2, and input VCM = 2.5V, unless otherwise noted (see Figure 1).
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INPUT VOLTAGE AND CURRENT NOISE DENSITY
100
Voltage Noise
(9.2nV/√Hz)
10
Current Noise
(3.5pA/√Hz)
1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
CLOSED−LOOP OUTPUT IMPEDANCE vs FREQUENCY
100
10
1
0.1
0.01
1k
10k
100k
1M
10M
100M
Frequency (Hz)
130
120
110
100
90
80
70
60
50
40
30
20
10
1
RECOMMENDED R_S vs CAPACITIVE LOAD
0dB Peaking Targeted
10
100
1k
Capacitive Load (pF)
8
7
6
5
4
3
2
1
V_I
0
−1
−2
−3
1
FREQUENCY RESPONSE vs CAPACITIVE LOAD
C_L = 10pF
C_L = 1000pF
C_L = 100pF
50Ω OP A830
750Ω
R_S
V_O
CL 1kΩ(1)
750Ω
NOTE: (1) 1kΩis optional.
10
Frequency (MHz)
100
300
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)
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)
12