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OPA685U Datasheet(PDF) 9 Page - Texas Instruments

Part # OPA685U
Description  Ultra-Wideband, Current-Feedback OPERATIONAL AMPLIFIER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

OPA685U Datasheet(HTML) 9 Page - Texas Instruments

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9
®
OPA685
TYPICAL PERFORMANCE CURVES: VS = ±5V (CONT)
G = +8, RF = 402Ω, and RL = 100Ω, unless otherwise noted.
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0.
Number of Video Loads
12
3
4
COMPOSITE VIDEO dG/dφ
dG, Positive Video
dφ, Negative Video
dφ, Positive Video
dG, Negative Video
G = +2
R
F = 511Ω
6.1
6.0
5.9
+1.0
+0.5
0
–0.5
–1.0
0
100
200
Frequency (20MHz/div)
GAIN FLATNESS AND DEVIATION FROM
LINEAR PHASE vs FREQUENCY
Deviation from Linear Phase
Right Scale
Gain
Left Scale
G = +2
R
L = 100Ω
R
F = 523Ω
60
55
50
45
40
35
30
25
20
102
103
104
105
106
107
108
CMRR AND PSRR vs FREQUENCY
Frequency (Hz)
+PSRR
–PSRR
CMRR
95
85
75
65
55
45
35
OPEN-LOOP TRANSIMPEDANCE GAIN/PHASE
Frequency (Hz)
100k
1M
10M
100M
1G
10G
0
–40
–80
–120
–160
–200
–240
|Z
OL|
∠ Z
OL
15
12
9
6
3
0
150
120
90
60
30
0
–40
–10
20
50
80
110
140
SUPPLY AND OUTPUT CURRENT vs TEMPERATURE
Temperature (C)
Supply Current
Sourcing Output Current
Sinking Output Current
5
4
3
2
1
0
–1
–2
–3
–4
–5
100
80
60
40
20
0
–20
–40
–60
–80
–100
–40
–20
0
20
40
60
80
100
120
140
TYPICAL DC DRIFT OVER TEMPERATURE
Ambient Temperature (
°C)
Inverting Input
Bias Current
Non-Inverting Input
Bias Current
V
IO


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