Datasheet LTC1091, LTC1092, LTC1093, LTC1094 (Analog Devices) - 6

LTC1091/LTC1092 LTC1093/LTC1094
W U TYPICAL PERFOR A CE CH C ARA TERISTICS LTC1091/LTC1092/LTC1093/LTC1094 LTC1091/LTC1092/LTC1093/LTC1094 LTC1091/LTC1092/LTC1093/LTC1094 Maximum Clock Rate vs Maximum Filter Resistor vs Sample-and-Hold Acquisition Time Source Resistance Cycle Time vs Source Resistance
1.25 100k 10 VCC = 5V R VCC = 5V T FILTER A = 25°C V µs) IN + TA = 25°C 1.00 0V TO 5V INPUT STEP (MHz) CFILTER ≥1µF † Ω 10k ( – †† 0.75 FILTER 1k 1 0.50 RSOURCE RSOURCE+ “+” OR “–” VIN + INPUT 100 MAXIMUM R 0.25 VIN MAXIMUM CLK FREQUENCY – S & H ACQUISITION TIME TO 0.1% ( 0 10 0.1 10 100 1k 10k 10 100 1000 10000 100 1k 10k RSOURCE (Ω) CYCLE TIME (µs) R + SOURCE (Ω) 1091/2/3/4 G10 1091/2/3/4 G11 1091/2/3/4 G12
LTC1091/LTC1092 Input Channel LTC1091 Offset Error vs LTC1091 Linearity Error vs Leakage Current vs Temperature Supply Voltage Supply Voltage
100 1.25 1.25 ON-CHANNEL OR )] )] fCLK = 500kHz fCLK = 500kHz OFF-CHANNEL REF REF TA = 25°C TA = 25°C (V 80 (V 1.00 VOS = 0.85mV AT V CC (VREF) = 5V CC 1.00 CC 1 60 1 0.75 1024 0.75 1024 40 0.5 0.5 20 0.25 0.25 INPUT CHANNEL LEAKAGE CURRENT (nA) OFFSET ERROR [LSB = • V LINEARITY ERROR [LSB = • V 0 0 0 –50 –25 0 25 50 75 100 125 4 5 6 7 8 9 10 4 5 6 7 8 9 10 AMBIENT TEMPERATURE (°C) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) 1091/2/3/4 G13 1091/2/3/4 G14 1091/2/3/4 G15
LTC1091 Change in Full-Scale LTC1091 Supply Current vs LTC1091 Supply Current vs Error vs Supply Voltage Supply Voltage Temperature
0.50 7 1.8 fCLK = 500kHz f f CLK = 500kHz CLK = 500kHz TA = 25°C CS = V V 6 CC (VREF) = 5V CC (VREF) 1.6 0.25 T CS = 5V A = 25°C )] 5 REF 1.4 (V 0 CC 4 1.2 1 3 1024 –0.25 1.0 2 [LSB = • V SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) –0.50 CHANGE IN FULL-SCALE ERROR 1 0.8 –0.75 0 0.6 4 5 6 7 8 9 10 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (°C) 1091/2/3/4 G16 1092/2/3/4 G17 1091/2/3/4 G18 † AS THE CLK FREQUENCY AND SOURCE RESISTANCE ARE INCREASED, MAXIMUM CLK †† MAXIMUM RFILTER REPRESENTS THE FILTER RESISTOR VALUE AT WHICH A 0.1LSB FREQUENCY (∆ERROR ≤ 0.1LSB) REPRESENTS THE FREQUENCY AT WHICH A 0.1LSB CHANGE IN FULL-SCALE ERROR FROM ITS VALUE AT RFILTER = 0 IS FIRST DETECTED. SHIFT IN ANY CODE TRANSITION FROM ITS 500kHz, 0Ω VALUE IS FIRST DETECTED. 6