Datasheet LTC1289 (Analog Devices) - 6

LTC1289
W U TYPICAL PERFOR A CE CH C ARA TERISTICS Maximum Filter Resistor vs Sample and Hold Acquisition Supply Current (Power Shutdown) Cycle Time Time vs Source Resistance vs Temperature
10k 100 2.0 VREF = 2.5V ACLK OFF DURING µs) 1.8 VCC = 3V POWER SHUTDOWN TA = 25°C 1.6 ) Ω 1k 0V TO 2.5V INPUT STEP µA) 1.4 ** ( RSOURCE+ 1.2 VIN + FILTER 100 10 1.0 – R 0.8 FILTER VIN + 0.6 C MAXIMUM R 10 FILTER ≥ 1µF SUPPLY CURRENT ( – 0.4 S & H AQUISITION TIME TO 0.02% ( 0.2 1 1 0 10 100 1000 10000 100 1k 10k –60 –40 –20 0 20 40 60 80 100 RSOURCE+ (Ω) AMBIENT TEMPERATURE (°C) CYCLE TIME (µs) LTC1289 TPC10 LTC1289 TPC11 LTC1289 TPC12
Supply Current (Power Shutdown) Input Channel Leakage Current vs ACLK vs Temperature Noise Error vs Reference Voltage
18 1000 1.0 VCC = 3V 900 LTC1289 NOISE = 200µV GUARANTEED p-p CMOS LOGIC SWINGS 16 800 0.8 µA) 14 700 600 0.6 12 500 10 400 0.4 300 SUPPLY CURRENT ( 8 200 0.2 ON CHANNEL 6 100 PEAK-TO-PEAK NOISE ERROR (LSB) INPUT CHANNEL LEAKAGE CURRENT (nA) OFF CHANNEL 4 0 0 200 400 600 800 1000 –50 –30 –10 10 30 50 70 90 110 130 0 0.5 1.0 1.5 2.0 2.5 3.0 ACLK FREQUENCY (kHZ) AMBIENT TEMPERATURE (°C) REFERENCE VOLTAGE (V) LTC1298 TPC13 LTC1289 TPC14 LTC1289 TPC15
Power Consumption with Power tsuCS vs Supply Voltage Shutdown vs fSAMPLE
300 10000 T V A = 25°C CC = 3V VREF = 2.5V 250 ACLK = 2MHz 1000 CMOS LOGIC SWINGS THREE CONVERSIONS/CYCLE 200 + ns µA) 150 100 ICC ( 2ACLK 100 10 50 0 1 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 1 10 100 1000 10000 ** MAXIMUM RFILTER REPRESENTS THE FILTER SUPPLY VOLTAGE (V) RESISTOR VALUE AT WHICH A 0.1LSB CHANGE fSAMPLE (Hz) IN FULL SCALE ERROR FROM ITS VALUE AT RFILTER LTC1289 TPC16 LTC1289 TPC17 = 0 IS FIRST DETECTED. 1289fb 6