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F1950 数据表(PDF) 10 Page - Renesas Technology Corp

部件名 F1950
功能描述  6-bit Digital Step Attenuator 400 to 4000 MHz
PDF  19 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

F1950 数据表(HTML) 10 Page - Renesas Technology Corp

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F1953 Datasheet
© 2022 Renesas Electronics Corporation
10
February 9, 2022
TOCS CONTINUED (-5-) [fRF = 900 MHz]
Transient [ 15.5 to 16.0 (MSB+) 3.3V F1953 ]
The graphs ABOVE show the transient overshoot and
settling time performance for both the MSB+ and
MSB- cases for the F1953. The device settles very
quickly (~400) ns with benign (~0.5) dB overshoot.
Transient [ 15.75 to 16.00 (MSB+) Standard DSA ]
Transient [ 16.0 to 15.5 (MSB-) 5.0V F1953 ]
The graphs BELOW show the transient overshoot and
settling time performance for a popular competing
DSA. Note the overshoot/undershoot excursion of
almost 10 dB and the very long settling time. For the
MSB- case, the settling time is off the scale, ~ 3
μsec.
Transient [ 16.00 to 15.75 (MSB-) Standard DSA ]
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-10.9
-9.9
-8.9
-7.9
-6.9
-5.9
-4.9
-3.9
-2.9
-1.9
-0.9
0
100
200
300
400
500
600
700
800
Time (nsec)
Glitch ~ 0.5 dB
Pwr (dBm)
Trigger
Settling Time = 400 nsec (+/- 0.1 dB)
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-15.20
-14.20
-13.20
-12.20
-11.20
-10.20
-9.20
-8.20
-7.20
-6.20
-5.20
-100
0
100
200
300
400
500
600
700
Time (nsec)
Pwr (dBm)
Trigger
Settling Time = 600nsec (+/- 0.1 dB)
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-3.0
-2.0
-1.0
0
100
200
300
400
500
600
700
800
Time (nsec)
Glitch ~ 0.3 dB
Pwr (dBm)
Trigger
Settling Time = 370 nsec (+/- 0.1 dB)
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-13.57
-12.57
-11.57
-10.57
-9.57
-8.57
-7.57
-6.57
-5.57
-4.57
-3.57
-100
0
100
200
300
400
500
600
700
Time (nsec)
Pwr (dBm)
Trigger
Settling Time >> 1 usec



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