Datasheet LTC1289 (Analog Devices) - 5

LTC1289
W U TYPICAL PERFOR A CE CH C ARA TERISTICS Unadjusted Offset Voltage vs Supply Current vs Supply Voltage Supply Current vs Temperature Reference Voltage
2.8 1.9 0.9 ACLK = 2MHz ACLK = 2MHz V 2.6 CC = 3V T V 0.8 A = 25°C CC = 3V 1.8 ) 2.4 0.7 REF V 2.2 OS = 0.250mV 1.7 × V 0.6 2.0 0.5 1.8 1.6 0.4 1.6 VOS = 0.125mV 1.5 0.3 1.4 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 0.2 1.2 1.4 OFFSET (LSB = 1/4096 1.0 0.1 0.8 1.3 0 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 –40 –25 –10 5 20 35 50 65 80 95 0 0.5 1.0 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) TEMPERATURE (°C) REFERENCE VOLTAGE (V) LTC 1289 TPC02 LTC1289 TPC01 LTC1289 TPC03
Change in Linearity vs Reference Change in Gain vs Reference Voltage Voltage Change in Offset vs Temperature
) 0.5 0.25 0.5 REF VCC = 3V ) V V CC = 3V CC = 3V 0.20 V × V REF REF = 2.5V 0.4 0.15 0.4 ACLK = 2MHz × V 0.10 0.3 0.3 0.05 0 0.2 –0.05 0.2 –0.10 0.1 –0.15 0.1 CHANGE IN GAIN (LSB = 1/4096 –0.20 MAGNITUDE OF OFFSET CHANGE (LSB) CHANGE IN LINEARITY (LSB = 1/4096 0 –0.25 0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 –60 –40 –20 0 20 40 60 80 100 REFERENCE VOLTAGE (V) REFERENCE VOLTAGE (V) AMBIENT TEMPERATURE (°C) LTC1289 TPC04 LTC1289 TPC05 LTC1289 TPC06
Change in Linearity vs Maximum ACLK Frequency vs Temperature Change in Gain vs Temperature Source Resistance
0.5 0.5 3 VCC = 3V VCC = 3V VCC = 3V VREF = 2.5V VREF = 2.5V VREF = 2.5V 0.4 ACLK = 2MHz 0.4 ACLK = 2MHz TA = 25°C 2 0.3 0.3 VIN + INPUT RSOURCE– – INPUT 0.2 0.2 1 0.1 0.1 MAGNITUDE OF GAIN CHANGE (LSB) MAXIMUM ACLK FREQUENCY* (MHz) MAGNITUDE OF LINEARITY CHANGE (LSB) 0 0 0 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 100 1k 10 k 100k AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) RSOURCE (Ω) LTC1289 TPC07 LTC1289 TPC08 LTC1289 TPC09 * MAXIMUM ACLK FREQUENCY REPRESENTS THE ACLK FREQUENCY AT WHICH A 0.1LSB SHIFT IN THE ERROR AT ANY CODE TRANSITION FROM ITS 2MHZ VALUE IS FIRST DETECTED. 1289fb 5