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OPA3680 Datasheet, PDF (7/21 Pages) Burr-Brown (TI) – Triple, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER With Disable | |||
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TYPICAL PERFORMANCE CURVES: VS = ±5V
At TA = +25°C, G = +2, RF = 250â¦, and RL = 100â¦, unless otherwise noted. See Figure 1.
INPUT VOLTAGE AND CURRENT NOISE DENSITY
100
10
Voltage Noise
4.8nV/âHz
Current Noise
2.5pA/âHz
1
100
1k
10k
100k
1M
10M
Frequency (Hz)
TWO-TONE, 3rd-ORDER SPURIOUS LEVEL
â40
50MHz
â50
â60
20MHz
â70
10MHz
â80
Load Power at matched 50⦠load
â90
â8 â6 â4 â2 0 2 4 6 8 10
Single-Tone Load Power (dBm)
35
30
25
20
15
10
5
0
10
RECOMMENDED RS vs CAPACITIVE LOAD
100
Capacitive Load (pF)
FREQUENCY RESPONSE vs CAPACITIVE LOAD
12
Signal Gain = +2
9 Noise Gain = +3
100pF/20â¦
10pF/22.2â¦
6
3
0
â3 VIN
1/3
RS
250â¦
â6
OPA3680
â9
250â¦
CL
VO
1kâ¦
22pF/32.4â¦
â12
â15
â18
0
250â¦
1k⦠is optional
47pF/26.7â¦
100MHz
Frequency (20MHz/div)
200MHz
100
90
80
70
60
50
40
30
20
10
0
10k
CMRR AND PSRR vs FREQUENCY
âPSRR
+PSRR
CMRR
100k
1M
10M
Frequency (Hz)
100M
OPEN-LOOP GAIN AND PHASE
70
60
50
Open-Loop Gain
40
Open-Loop Phase
30
20
10
0
â10
â20
10k
100k
1M
10M
Frequency (Hz)
100M
0
â30
â60
â90
â120
â150
â180
â210
â240
â270
1G
®
7
OPA3680
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