OPA4820ID Datasheet, PDF (7/34 Pages) Texas Instruments – Quad, Unity-Gain Stable, Low-Noise, Voltage-Feedback Operational Amplifier

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TYPICAL CHARACTERISTICS: V_S = ±5V (continued)
RF = 402Ω, RL = 100Ω, and G = +2, unless otherwise noted.
OPA4820
SBOS317D − SEPTEMBER 2004 − REVISED AUGUST 2008
INPUT VOLTAGE AND CURRENT NOISE
100
10
Voltage Noise (2.5nV/√Hz)
Current Noise (1.7pA/√Hz)
1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
45
40
35
30
25
20
15
0
TWO−TONE, 3RD−ORDER
INTERMODULATION INTERCEPT
PI
1 /4
50Ω O P A4820
402 Ω
402 Ω
P_O
200Ω
5
10
15
20
25
30
Frequency (MHz)
RECOMMENDED R_S vs CAPACITIVE LOAD
100
0.1dB Peaking Targeted
10
1
1
10
100
1000
Capacitive Load (pF)
FREQUENCY RESPONSE vs CAPACITIVE LOAD
8
C_L = 10pF
7
C_L = 22pF
6
5
C_L = 47pF
4
C_L = 100pF
3
2
V_I
1
0
50Ω OPA4820
40 2Ω
R_S
V_O
C_L
1kΩ⁽¹⁾
−1
402Ω
NOTE: (1 ) 1kΩ is optional.
−2
−3
1
10
100
400
Frequency (MHz)
90
80
70
60
50
40
30
20
10
0
1k
CMRR AND PSRR vs FREQUENCY
CMRR
+PSRR
−PSRR
10k
100k
1M
10M
100M
Frequency (Hz)
80
70
60
50
40
30
20
10
0
−10
100
OPEN−LOOP GAIN AND PHASE
0
−20
20 log (A_OL)
−40
−60
−80
∠A_{OL −100}
−120
−140
−160
−180
1k 10k 100k 1M 10M 100M 1G
Frequency (Hz)
7