Datasheet LTC1863L, LTC1867L (Analog Devices) - 6

LTC1863L/LTC1867L
TYPICAL PERFORMANCE CHARACTERISTICS (LTC1867L) Total Harmonic Distortion Power Supply Feedthrough Supply Current vs fSAMPLE vs Input Frequency vs Ripple Frequency (LTC1863L/LTC1867L)
–100 –20 800 VDD = 3V VDD = 2.7V –90 –30 fSAMPLE = 175ksps 700 VRIPPLE = 10mVP-P –80 –40 600 SFDR –70 –50 500 THD –60 –60 400 –50 –70 AMPLITUDE (dB) SUPPLY CURRENT (µA) 300 –40 –80 VDD = 3V 200 –30 INTERNAL REF POWER SUPPLY FEEDTHROUGH (dB) –90 fSAMPLE = 175ksps –20 –100 100 1 10 100 1 10 100 1000 1 10 100 1000 INPUT FREQUENCY (kHz) RIPPLE FREQUENCY (kHz) fSAMPLE (ksps) 1863L7L G08 1863L7L G09 1863L7L G07
(LTC1863L/ LTC1867L) Histogram for 4096 Conversions Supply Current vs Supply Voltage Supply Current vs Temperature (LTC1867L)
1200 1500 1200 fSAMPLE = 175ksps fSAMPLE = 175ksps VDD = 2.7V INTERNAL REF 1044 INTERNAL REF 1100 1000 895 1250 830 3.6V 1000 DD 800 3.3VDD 900 1000 600 3VDD COUNTS 465 800 2.7V 400 DD 333 SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) 750 261 170 700 200 58 7 23 9 1 600 500 0 2.7 3 3.3 3.6 –50 –25 0 25 50 75 100 20 21 22 23 24 25 26 27 28 29 30 31 SUPPLY VOLTAGE (V) TEMPERATURE (°C) CODE 1963L7L G10 1863L7L G11 1863L7L G12
Offset Drift (LTC1867L) Gain Error Drift (LTC1867L) REFCOMP vs Load Current vs Temperature vs Temperature
2.510 15 V 10 DD = 2.7V VDD = 2.7V UNIPOLAR VDD = 2.7V 2.505 fSAMPLE = 175ksps MODE fSAMPLE = 175ksps EXT VREF = 1.25V 10 EXT VREF = 1.25V UNIPOLAR/BIPOLAR 2.500 5 BIPOLAR 5 2.495 MODE 0 0 2.490 REFCOMP (V) –5 2.485 UNIPOLAR OFFSET (LSB) –5 UNIPOLAR OFFSET (LSB) 2.480 –10 2.475 –10 –15 0 0.5 1 1.5 2 –50 –25 0 25 50 75 100 –50 –25 0 25 50 75 100 LOAD CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 1863L7L G13 1863L7L G14 1863L7L G15 1863l7lfe 6 For more information www.linear.com/LTC1863L Document Outline Description Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Package Description Related Parts