Datasheet LTC2203, LTC2202 (Analog Devices) - 10

LTC2203/LTC2202
TYPICAL PERFORMANCE CHARACTERISTICS LTC2203: 32K Point FFT, LTC2203: 32K Point FFT, LTC2203: 32K Point FFT, fIN = 70.1MHz, –1dBFS, PGA = 1 fIN = 70.1MHz, –10dBFS, PGA = 1 fIN = 70.1MHz, –20dBFS, PGA = 1
0 0 0 –10 –10 –10 –20 –20 –20 –30 –30 –30 –40 –40 –40 –50 –50 –50 –60 –60 –60 –70 –70 –70 –80 –80 –80 –90 –90 –90 AMPLITUDE (dBFS) –100 AMPLITUDE (dBFS) –100 AMPLITUDE (dBFS) –100 –110 –110 –110 –120 –120 –120 –130 –130 –130 –140 –140 –140 0 2 4 6 8 10 12 0 2 4 6 8 10 12 0 2 4 6 8 10 12 FREQUENCY(MHz) FREQUENCY(MHz) FREQUENCY(MHz) 22032 G25 22032 G26 22032 G27
LTC2203: 32K Point 2-Tone FFT, LTC2203: 32K Point 2-Tone FFT, LTC2203: SFDR vs Input Level, fIN = 44.9MHz and 70.1MHz, fIN = 44.9MHz and 70.1MHz, fIN = 70.1MHz, PGA = 0, –7dBFS, PGA = 0 –15dBFS, PGA = 0 Dither “Off”
0 0 140 –10 –10 –20 –20 120 –30 –30 –40 –40 100 –50 –50 –60 –60 80 –70 –70 –80 –80 60 –90 –90 AMPLITUDE (dBFS) –100 AMPLITUDE (dBFS) –100 SFDR (dbc AND dBFS) 40 –110 –110 –120 –120 20 –130 –130 –140 –140 0 0 2 4 6 8 10 12 0 2 4 6 8 10 12 –70 –60 –50 –40 –30 –20 –10 0 FREQUENCY(MHz) FREQUENCY(MHz) INPUT LEVEL (dBFS) 22032 G28 22032 G29 22032 G30
LTC2203: SFDR vs Input Level, fIN = 70.1MHz, PGA = 0, LTC2203: SFDR (HD2 or HD3) Dither “On” vs Input Frequency LTC2203: SNR vs Input Frequency
140 110 82 81 120 105 PGA = 0 80 100 100 79 95 PGA = 1 80 78 90 PGA = 1 60 PGA = 0 77 SFDR (dBc) 85 SNR (dBFS) 76 SFDR (dBc AND dBFS) 40 80 75 20 75 74 0 70 73 –70 –60 –50 –40 –30 –20 –10 0 0 20 40 60 80 100 0 20 40 60 80 100 120 140 INPUT LEVEL (dBFS) INPUT FREQUENCY (MHz) INPUT FREQUENCY (MHz) 22032 G31 22032 G32 22032 G33 22032fd 10