Datasheet LTC2238, LTC2237, LTC2236 (Analog Devices) - 10

LTC2238/LTC2237/LTC2236
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2236: 8192 Point 2-Tone FFT, fIN = 10.9MHz and 13.8MHz, LTC2236: Grounded Input LTC2236: SNR vs Input Frequency, –1dB, 2V Range, 25Msps Histogram, 25Msps –1dB, 2V Range, 25Msps
0 70000 62.5 65520 –10 –20 60000 61.5 –30 50000 –40 –50 60.5 40000 –60 –70 COUNT 30000 SNR (dBFS) 59.5 AMPLITUDE (dB) –80 –90 20000 –100 58.5 10000 –110 0 0 –120 0 57.5 0 2 4 6 8 10 12 511 512 513 0 50 100 150 200 FREQUENCY (MHz) CODE INPUT FREQUENCY (MHz) 223876 G37 223876 G38 223876 G39
LTC2236: SFDR vs Input LTC2236: SNR and SFDR vs Frequency, –1dB, 2V Range, Sample Rate, 2V Range, LTC2236: SNR vs Input Level, 25Msps fIN = 5MHz, –1dB fIN = 5MHz, 2V Range, 25Msps
100 100 80 SFDR 95 70 dBFS 90 60 90 80 50 85 dBc 40 80 SFDR (dBFS) 70 30 75 SNR AND SFDR (dBFS) SNR SNR (dBc AND dBFS) 20 60 70 10 65 50 0 0 50 100 150 200 0 5 10 15 20 25 30 35 40 45 50 –60 –50 –40 –30 –20 –10 0 INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) INPUT LEVEL (dBFS) 223876 G40 223876 G41 223876 G42
LTC2236: IOVDD vs Sample Rate, LTC2236: SFDR vs Input Level, LTC2236: I 5MHz Sine Wave Input, –1dB, VDD vs Sample Rate, fIN = 5MHz, 2V Range, 25Msps 5MHz Sine Wave Input, –1dB OVDD = 1.8V
120 35 3 110 100 90 30 dBFS 80 2V RANGE 2 70 60 (mA) 25 (mA) dBc 50 I VDD 1V RANGE 80dBc SFDR I OVDD 40 REFERENCE LINE 1 SFDR (dBc AND dBFS) 30 20 20 10 0 15 0 –60 –50 –40 –30 –20 –10 0 0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 35 INPUT LEVEL (dBFS) SAMPLE RATE (Msps) SAMPLE RATE (Msps) 223876 G43 223876 G44 223876 G45 223876fa 10