Datasheet LTC6990 (Analog Devices) - 7

LTC6990
TYPICAL PERFORMANCE CHARACTERISTICS V+ = 3V, unless otherwise noted. Typical Frequency Error vs Rise and Fall Time Output Disable Propagation Delay Time (Long-Term Drift) vs Supply Voltage (tPD) vs Supply Voltage
200 3.0 50 65 UNITS TA = 25°C TA = 25°C SOT-23 AND DFN PARTS C 150 LOAD = 5pF 45 CLOAD = 5pF T 2.5 A = 30°C 40 100 2.0 Y (ns) 35 50 tRISE 30 0 1.5 25 ALL TIME (ns) t TION DELA FALL 20 –50 AGA TA FREQUENCY (ppm) RISE/F 1.0 15 DEL –100 PROP 0.5 10 –150 5 –200 0 0 0 400 800 1200 1600 2000 2400 2800 2 3 4 5 6 2 3 4 5 6 TIME (h) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) 6990 G15a 6990 G16 6990 G17
Typical ISET Current Limit vs V+ Typical Output Waveform
1000 TA = 25°C V+ = 3.3V SET PIN SHORTED TO GND DIVCODE = 2 R 800 SET = 200k 600 OE 2V/DIV (µA) I SET 400 OUT 2V/DIV 200 0 2 3 4 5 6 20µs/DIV 6990 G19 SUPPLY VOLTAGE (V) 6990 G18
Frequency Modulation Frequency Modulation
VCTRL VCTRL 2V/DIV 2V/DIV OUT OUT 2V/DIV 2V/DIV fOUT fOUT 50kHz/DIV 50kHz/DIV 20µs/DIV 6990 G20 20µs/DIV 6990 G21 V+ = 3.3V, DIVCODE = 0 V+ = 3.3V, DIVCODE = 0 RSET = 200k, RVCO = 464k RSET = 200k, RVCO = 464k fOUT = 175kHz to 350kHz fOUT = 175kHz to 350kHz 6990fc For more information www.linear.com/LTC6990 7 Document Outline Features Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts