Datasheet LTC1282 (Analog Devices) - 6

LTC1282
W U TYPICAL PERFOR A CE CHAR C A TERISTICS Supply Current (IDD) Integral Nonlinearity Differential Nonlinearity vs Temperature
1 1 10 f 9 SAMPLE = 160kHz VDD = 3V 8 0.5 0.5 7 6 0 0 5 4 3 –0.5 –0.5 SUPPLY CURRENT (mA) 2 1 INTEGRAL NONLINEARITY ERROR (LSBs) DIFFERENTIAL NONLINEARITY ERROR (LSBs) –1 –1 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) LTC1282 • TPC01 LTC1282 • TPC02 LTC1282 • TPC03
Supply Current (I ENOBs and S/(N + D) Distortion vs Input Frequency DD) vs Supply Voltage vs Input Frequency (Unipolar)
20 12 74 S/(N + D) (dB) 0 fSAMPLE = 160kHz BIPOLAR f 11 68 SAMPLE = 160kHz 18 –10 TA = 25°C (±1.25V 3V SUPPLY 10 62 16 UNIPOLAR INPUT) –20 UNIPOLAR 9 (0V – 2.5V INPUT) 56 14 –30 8 50 SINGLE 12 –40 SUPPLY 7 10 6 –50 DUAL THD 5 8 –60 SUPPLIES 3rd HARMONIC 4 6 –70 SUPPLY CURRENT (mA) 3 2nd HARMONIC 4 –80 2 fSAMPLE = 160kHz V 2 EFFECTIVE NUMBER OF BITS (ENOBs) S = ±2.7V BIPOLAR –90 1 VS = 3V UNIPOLAR AMPLITUDE (dB BELOW THE FUNDAMENTAL) 0 0 –100 2.5 3 3.5 4 4.5 5 1k 10k 100k 1M 10M 1k 10k 100k 1M 10M SUPPLY VOLTAGE (V) INPUT FREQUENCY (Hz) INPUT FREQUENCY (Hz) LTC1282 • TPC05 LTC1282 • TPC06 LTC1282 • TPC04
Distortion vs Input Frequency Power Supply Feedthrough (Bipolar) vs Ripple Frequency Intermodulation Distortion Plot
0 0 0 f f f –10 SAMPLE = 140kHz SAMPLE = 140kHz SAMPLE = 160kHz ±3V SUPPLIES –10 VDD (VRIPPLE = 2.5mV) fIN1 = 19.0kHz –20 BIPOLAR –20 –20 VSS (VRIPPLE = 2.5mV) fIN2 = 20.6kHz DGND (V VDD = 3V –30 RIPPLE = 250mV) –30 –40 UNIPOLAR –40 –40 –50 –50 –60 –60 –60 AMPLITUDE OF –80 –70 –70 AMPLITUDE (dB) –80 3rd HARMONIC –80 THD –100 –90 2nd HARMONIC POWER SUPPLY FEEDTHROUGH (dB) –90 AMPLITUDE (dB BELOW THE FUNDAMENTAL) –100 –100 –120 1k 10k 100k 1M 10M 1k 10k 100k 1M 0 10k 20k 30k 40k 50k 60k 70k 80k INPUT FREQUENCY (Hz) RIPPLE FREQUENCY (Hz) FREQUENCY (Hz) LTC1282 • TPC07 LTC1282 • TPC08 LTC1282 • TPC09 6