AD9975ABSTEB datasheet(9/20 Pages) AD

9 / 20 page

REV. 0

AD9975

–9–

2.5

–6

1.8

1.5

2.1

1.6

1.9

2.3

1.7

VGA GAIN – dB

–4 –2 02468 10 12 14 16 18 20 22 24 26 28 30 32 34

2.4

2.0

2.2

TPC 13. PGA Gain Step vs. Gain

1MHz

10MHz

100MHz

12.1MHz

LOG MAG

5dB/Div

–3.0dB

REF 0dB

TPC 14. Rx LPF Frequency Response, LPF =

Narrowband Rx Filter, FADC = 50 MHz,

Tuning Target = 255

9.9MHz

1MHz

10MHz

100MHz

DELAY

10ns/Div

70.1ns

REF 0s

TPC 15. Rx LPF Frequency Response, LPF =

Wideband Rx Filter, FADC = 50 MHz,

Tuning Target = 255

24.1MHz

1MHz

10MHz

100MHz

LOG MAG

REF 0dB

–3.0dB

5dB/Div

TPC 16. Rx LPF Group Delay, LPF = Narrowband

Rx Filter, FADC = 50 MHz, Tuning Target = 255

22.1MHz

1MHz

10MHz

100MHz

DELAY

5 ns/Div

REF 0s

33.9ns

TPC 17. Rx LPF Group Delay, LPF = Wideband Rx

Filter, FADC = 50 MHz, Tuning Target = 255

123.5 kHz

LOG MAG

5dB/Div

REF 0dB

–3.00dB

10kHz

100kHz

1MHz

TPC 18. Rx HPF Frequency Response, FADC = 50 MHz

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