Datasheet LTC1408 (Analog Devices) - 6

LTC1408
W U TYPICAL PERFOR A CE CHARACTERIST V ICS DD = 3V, TA = 25
°
C 610kHz Unipolar Single Ended 833kHz into CH0 +, 841kHz into Differential Linearity for CH0 with Input Sine Wave 4096 Point FFT, CH0 –, 588ksps Bipolar Mode Internal 2.5V Reference, 625ksps 4096 Point FFT Unipolar Mode
0 0 1.0 –10 –10 0.8 –20 –20 0.6 –30 –30 0.4 –40 –40 –50 0.2 –50 –60 –60 0 –70 –70 –0.2 –80 MAGNITUDE (dB) –80 –0.4 OUTPUT MAGNITUDE (dB) –90 –90 –0.6 –100 DIFFERENTIAL LINEARITY (LSB) –100 –0.8 –110 –110 –120 –120 –1.0 0 62.5 125 188 250 313 0 50 100 150 200 250 300 0 4096 8192 12288 16384 FREQUENCY(kHz) FREQUENCY(kHz) OUTPUT CODE 1408 G12 1408 G10 1408 G11
Integral Linearity End Point Fit for Differential Linearity for CH0 with CH0 with Internal 2.5V Internal 2.5V Reference, Reference, Unipolar Mode Differential Input in Bipolar Mode Integral LinearIty End Point Fit
4.0 1.0 4.0 3.2 0.8 3.2 2.4 0.6 2.4 1.6 0.4 1.6 0.8 0.2 0.8 0 0 0 –0.8 –0.2 –0.8 –1.6 –0.4 –1.6 INTEGRAL LINEARITY (LSB) INTEGRAL LINEARITY (LSB) –2.4 –0.6 –2.4 DIFFERENTIAL LINEARITY (LSB) –3.2 –0.8 –3.2 –4.0 –1.0 –4.0 0 4096 8192 12288 16384 0 4096 8192 12288 16384 0 4096 8192 12288 16384 OUTPUT CODE OUTPUT CODE OUTPUT CODE 1408 G13 1408 G15 1408 G14
Full Scale Signal Response CROSSTALK vs Frequency CMRR vs Frequency
3 0 0 0 –3 –20 –20 –6 –40 –40 –9 –12 –60 –60 –15 CMRR (dB) PSSR (dB) –18 MAGNITUDE (dB) –80 –80 –21 –24 –100 –100 –27 –30 –120 –120 10 100 1000 100 1k 10k 100k 1M 10M 100M 1G 100 1k 10k 100k 1M 10M 100M 1G FREQUENCY (MHz) FREQUENCY (Hz) FREQUENCY (Hz) 1408 G20 1408 G21 1408 G16 1408fa 6