Datasheet LTC6991 (Analog Devices) - 6

LTC6991
TYPICAL PERFORMANCE CHARACTERISTICS V+ = 3.3V, RSET = 200k, TA = 25°C unless otherwise noted. Supply Current Supply Current vs Supply Voltage Supply Current vs Temperature vs RST Pin Voltage
150 150 250 RSET = 800k RSET = 50k 125 125 200 5V RST FALLING 5V 5V, RSET = 100k RST RISING 100 RSET = 100k 100 R 2.5V, R 150 SET = 200k SET = 100k Y CURRENT (µA) 75 75 3.3V 3.3V 5V, R Y CURRENT (µA) SET = 800k RST FALLING RST RISING R 100 50 SET = 800k 50 2.5V, RSET = 800k POWER SUPPL 50 25 POWER SUPPLY CURRENT (µA) 25 POWER SUPPL 0 0 0 2 3 4 5 6 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 SUPPLY VOLTAGE (V) TEMPERATURE (°C) VRST/V+ (V/V) 6991 G10 6991 G11 6991 G12
RST Threshold Voltage Supply Current vs RSET Typical ISET Current Limit vs V+ vs Supply Voltage
150 1000 3.5 SET PIN SHORTED TO GND 125 3.0 800 V+ = 5V POSITIVE-GOING 2.5 100 600 V+ = 3.3V TAGE (V) 2.0 Y CURRENT (µA) 75 (µA) NEGATIVE-GOING I SET 400 1.5 50 V+ = 2.5V RST PIN VOL 1.0 POWER SUPPL 200 25 0.5 0 0 0 0 200 400 600 800 2 3 4 5 6 2 3 4 5 6 RSET (kΩ) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) 6991 G15 6991 G14 6991 G13
Reset Propagation Delay (tRST) Rise and Fall Time Typical Frequency Error vs Supply Voltage vs Supply Voltage vs Time (Long-Term Drift)
50 3.0 200 CLOAD = 5pF C 65 UNITS 45 LOAD = 5pF 150 SOT-23 AND DFN PARTS 40 2.5 TA = 30°C 100 35 2.0 30 50 tRISE 25 1.5 0 ALL TIME (ns) 20 tFALL –50 15 RISE/F 1.0 TA FREQUENCY (ppm) PROPAGATION DELAY (ns) DEL –100 10 0.5 5 –150 0 0 –200 2 3 4 5 6 2 3 4 5 6 0 400 800 1200 1600 2000 2400 2800 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) TIME (h) 6991 G17 6991 G17a 6991 G16 6991fc 6 For more information www.linear.com/LTC6991 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts