Datasheet LTC2238, LTC2237, LTC2236 (Analog Devices) - 7

LTC2238/LTC2237/LTC2236
W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2238: SNR and SFDR vs LTC2238: SFDR vs Input Frequency, Sample Rate, 2V Range, LTC2238: SNR vs Input Level, –1dB, 2V Range, 65Msps fIN = 5MHz, –1dB fIN = 30MHz, 2V Range, 65Msps
100 100 80 95 SFDR 70 dBFS 90 60 90 50 80 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 10 20 30 40 50 60 70 80 90 100 110 –60 –50 –40 –30 –20 –10 0 INPUT FREQUENCY (MHz) SAMPLE RATE (Msps) INPUT LEVEL (dBFS) 223876 G10 223876 G11 223876 G12
LTC2238: IOVDD vs Sample Rate, LTC2238: SFDR vs Input Level, LTC2238: I 5MHz Sine Wave Input, –1dB, VDD vs Sample Rate, f 5MHz Sine Wave Input, –1dB O IN = 30MHz, 2V Range, 65Msps VDD = 1.8V
120 80 6 110 100 75 5 dBFS 90 80 70 4 70 2V RANGE dBc (mA) 60 (mA) 65 3 1V RANGE 50 I VDD I OVDD 40 80dBc SFDR 60 2 SFDR (dBc AND dBFS) REFERENCE LINE 30 20 55 1 10 0 50 0 –60 –50 –40 –30 –20 –10 0 0 10 20 30 40 50 60 70 80 0 10 20 30 40 50 60 70 80 INPUT LEVEL (dBFS) SAMPLE RATE (Msps) SAMPLE RATE (Msps) 223876 G13 223876 G14 223876 G15
LTC2237: 8192 Point FFT, LTC2237: Typical INL, LTC2237: Typical DNL, fIN = 5MHz, –1dB, 2V Range, 2V Range, 40Msps 2V Range, 40Msps 40Msps
1.00 1.00 0 –10 0.75 0.75 –20 0.50 0.50 –30 –40 0.25 0.25 –50 0 0 –60 –70 –0.25 –0.25 INL ERROR (LSB) DNL ERROR (LSB) AMPLITUDE (dB) –80 –0.50 –0.50 –90 –100 –0.75 –0.75 –110 –1.00 –1.00 –120 0 256 512 768 1024 0 256 512 768 1024 0 5 10 15 20 CODE CODE FREQUENCY (MHz) 223876 G16 223876 G17 223876 G18 223876fa 7