Datasheet LTC6903, LTC6904 (Analog Devices) - 14

LTC6903/LTC6904
Typical applicaTion Wide Range Time Interval Generator (1.97 Seconds to 4 Microseconds)
+
1
V
< TRIGGER PULSE WIDTH < OUTPUT PULSE WIDTH fCLK
4 2 5 TRIG D PS Q U4 V+ 3 6 C2 CLK R Q 0.1µF 1 8 1 74HC74-A GND V+ PHILIPS SEMICONDUCTOR C1, 0.1µF 2 7 SDI SDI OE U6 V+ V+ LTC6903 16 C3 3 6 10 9 SCK SCK CLK CLK Q1 0.1µF f 7
OUTPUT
2n CLK Q2
PULSE
= 6 fCLK 4 5 Q3
WIDTH
SEN SEN CLK 5 16 10 Q4 3 4 12 9 6 Q5 D0 Y D PS Q VOUT 2 3 Q6 D1 U5 4 2 5 11 8 Q7 D2 Y CLK R Q V 13 1 OUT Q8 D3 QOUT 12 15 13 Q9 D4 14 14 Q10 D5 V+ 15 13 U1 Q11 D6 11 1 74HC74-B 12 MR Q12 D7 PHILIPS 11 8 S0 74HC4040 SEMICONDUCTOR 10 PHILIPS S1 9 SEMICONDUCTOR S2 7 OE S0 8 74HC251 S1 PHILIPS S2 SEMICONDUCTOR MUX SELECT ADDRESS LINES 69034 TA02
MUX INPUTS Output S2 S1 S0 n Pulse Width
0 0 0 4 16/fCLK 1 0 0 5 32/fCLK 0 1 0 6 64/fCLK 1 1 0 7 128/fCLK 0 0 1 8 256/fCLK 1 0 1 9 512/fCLK 0 1 1 10 1024/fCLK 1 1 1 11 2048/fCLK
relaTeD parTs PART NUMBER DESCRIPTION COMMENTS
LTC1799 1kHz to 30MHz ThinSOT™ Oscillator Single Output, Higher Frequency Operation LTC6900 1kHz to 20MHz ThinSOT Oscillator Single Output, Lower Power LTC6902 Mulitphase Oscillator with Spread Spectrum Modulation 1, 3 or 4-Phase Outputs 69034fe 14 Linear Technology Corporation LT 0312 REV E • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2003 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Power Requirements Serial Port Electrical Characteristics Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Theory of Operation Applications Information Package Description Revision History Typical Application Related Parts