Datasheet LTC1273, LTC1275, LTC1276 (Analog Devices) - 7

LTC1273 LTC1275/LTC1276
W U TYPICAL PERFOR A CE CH C ARA TERISTICS Integral Nonlinearity Differential Nonlinearity Supply Current vs Temperature
1.0 1.0 25 20 0.5 0.5 15 0 0 10 INL ERROR (LSB) DNL ERROR (LSB) –0.5 –0.5 SUPPLY CURRENT (mA) 5 –1.0 –1.0 0 0 512 1024 1536 2048 2560 3072 3584 4096 0 512 1024 1536 2048 2560 3072 3584 4096 –50 –25 0 25 50 75 100 125 CODE CODE TEMPERATURE (°C) LTC1273/75/76 • TPC01 LTC1273/75/76 • TPC02 LTC1273/75/76 • TPC03
ENOBs and S/(N + D) Signal-to-Noise Ratio (Without vs Input Frequency Harmonics) vs Input Frequency Distortion vs Input Frequency
12 74 80 0 11 68 fSAMPLE = 300kHz 70 –10 10 62 THD –20 9 56 60 2nd HARMONIC 3rd HARMONIC 8 50 S/(N + D) (dB) –30 50 7 –40 6 40 –50 5 30 –60 4 3 20 –70 EFFECTIVE NUMBER OF BITS SIGNAL-TO-NOISE RATIO (dB) 2 –80 10 1 fSAMPLE = 300kHz fSAMPLE = 300kHz –90 0 0 AMPLITUDE (dB BELOW THE FUNDAMENTAL) 10k 100k 1M 2M 1k 10k 100k 1M –100 1k 10k 100k 1M 10M INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) LTC1273/75/76 • TPC04 LTC1273/75/76 • TPC05 LTC1273/75/76 • TPC06
Power Supply Feedthrough Power Supply Feedthrough vs Ripple Frequency (LTC1273) vs Ripple Frequency (LTC1275/76)
0 0 fSAMPLE = 300kHz fSAMPLE = 300kHz –20 –20 VDD (VRIPPLE = 1mV) –40 –40 DGND (VRIPPLE = 0.1V) V V DD SS (VRIPPLE = 10mV) (VRIPPLE = 1mV) –60 –60 –80 –80 DGND –100 (V –100 RIPPLE = 0.1V) –120 –120 AMPLITUDE OF POWER SUPPLY FEEDTHROUGH (dB) 1k 10k 100k 1M AMPLITUDE OF POWER SUPPLY FEEDTHROUGH (dB) 1k 10k 100k 1M RIPPLE FREQUENCY (Hz) RIPPLE FREQUENCY (Hz) LTC1273/75/76 • TPC07 LTC1273/75/76 • TPC08 127356fa 7