ADA4940-1AR-EBZ Просмотр технического описания (PDF) - Analog Devices
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производитель
ADA4940-1AR-EBZ Datasheet PDF : 32 Pages
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ADA4940-1/ADA4940-2
8
G = +2
6
4
VOUT, dm
2
2 × VIN
0
–2
–4
–6
–8
0 100 200 300 400 500 600 700 800 900 1000
TIME (ns)
Figure 43. Output Overdrive Recovery, G = 2
100
10
1
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 44. Voltage Noise Spectral Density, Referred to Input
1.50
1.25
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–1.25
0
–OUT, VICM = 1V
0
–0.25
–0.50
DISABLE
VICM
+OUT, VICM = 1V
R1 R2
+2.5V
–FB DISABLE
+IN
–OUT
0.1µF
VOCM
–IN
+OUT
+FB
R1 R2
–2.5V
0V –0.75
–2.5V –1.00
–1.25
–1.50
–1.75
–2.00
–2.25
–2.50
–2.75
10 20 30 40 50 60 70 80 90 100
TIME (µs)
Figure 45. DISABLE Pin Turn-Off Time
Data Sheet
2.0
0.5
1.6
0.4
1.2
INPUT
0.3
0.8
0.2
0.4
OUTPUT
0.1
%ERROR
0
0
–0.4
–0.1
–0.8
–0.2
–1.2
–0.3
–1.6 VOUT, dm = 2V p-p
–0.4
–2.0
0
–0.5
10
20
30
40
50
60
70
80
TIME (ns)
Figure 46. 0.1% Settling Time
100
10
1
0.1
0.01
0.1
1
10
100
FREQUENCY (MHz)
Figure 47. Closed-Loop Output Impedance Magnitude vs. Frequency, G = 1
2.50
2.25
2.00
1.75 VICM
1.50
1.25
R1
R2
+2.5V
–FB DISABLE
+IN
–OUT
0.1µF
VOCM
–IN
+OUT
+FB
R1
R2
–2.5V
0V
–2.5V
DISABLE
0
–0.25
–0.50
–0.75
–1.00
–1.25
1.00
–1.50
0.75
–OUT, VICM = 1V
–1.75
0.50
–2.00
0.25
+OUT, VICM = 1V
–2.25
0
–2.50
–0.25
0
–2.75
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
TIME (µs)
Figure 48. DISABLE Pin Turn-On Time
Rev. B | Page 16 of 32
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