Datasheet LTC1286, LTC1298 (Analog Devices) - 5

LTC1286/LTC1298
W U TYPICAL PERFORMANCE CHARACTERISTICS Reference Current vs Change in Offset vs Sample Rate (LTC1286) Reference Current vs Temperature Reference Voltage
100 95 3 T ) T 90 A = 25°C VCC = VREF = 5V A = 25°C VCC = 5V f REF V 94.5 SMPL = 12.5kHz CC = 5V 2.5 80 VREF = 5V fCLK = 200kHz fCLK = 200kHz µA) fCLK = 200kHz TA = 25°C fSMPL = 12.5kHz 70 94 2 60 50 93.5 1.5 40 93 1 30 REFERENCE CURRENT ( 20 REFERENCE CURRENT (µA) 92.5 0.5 10 CHANGE IN OFFSET (LSB = 1/4096 V 0 92 0 0 2 4 6 8 10 12 14 –55 –35 –15 5 25 45 65 85 105 125 1 1.5 2 2.5 3 3.5 4 4.5 5 FREQUENCY (kHz) TEMPERATURE (°C) REFERENCE VOLTAGE (V) LT1286/98 G06 LT1286/98 G07 LT1286/98 G08
Change In Linearity vs Change In Gain vs Change in Offset vs Temperature Reference Voltage Reference Voltage
0 – 0 .5 –10 TA = 25°C T – 0 .45 A = 25°C V –9 CC = 5V VCC = 5V -0.5 – 0 .4 fCLK = 200kHz –8 fCLK = 200kHz fSMPL = 12.5kHz fSMPL = 12.5kHz – 0 .35 –7 -1 – 0 .3 –6 1.5 – .25 –5 – 0 .2 –4 -2 – 0 .15 –3 CHANGE IN GAIN (LSB) CHANGE IN OFFSET (LSB) VCC = VREF = 5V CHANGE IN LINEARITY (LSB) – 0 .1 –2 -2.5 fCLK = 200kHz f – 0 .05 SMPL = fSMPL (MAX) –1 -3 0 0 1 1.5 2 2.5 3 3.5 4 4.5 5 -55 -35 -15 5 25 45 65 85 1 1.5 2 2.5 3 3.5 4 4.5 5 REFERENCE VOLTAGE (V) TEMPERATURE (°C) REFERENCE VOLTAGE (V) LT1286/98 G10 LT1286/98 G09 LT1286/98 G11
Peak-to-Peak ADC Noise vs Effective Bits and S/(N + D) Reference Voltage Differential Nonlinearity vs Code vs Input Frequency
2 1.0 12 74 TA = 25°C 11 68 0.80 VCC = 5V 10 62 fCLK = 200kHz 0.60 1.5 9 56 0.40 8 50 0.20 7 44 1 0.00 6 38 –0.20 5 ADC NOISE IN LBSs –0.40 4 0.5 3 TA = 25°C –0.60 V 2 CC = 5V –0.80 EFFECTIVE NUMBER OF BITS (ENOBs) fCLK = 200kHz 1 DIFFERENTIAL NONLINEARITY ERROR (LBS) fSMPL = 12.5kHz 0 –1.0 0 1 2 3 4 5 0 2048 4096 1 10 100 1000 REFERENCE VOLTAGE (V) CODE INPUT FREQUENCY (kHz) LT1286/98 G15 LTC 1286/98 G20 5