Datasheet LTC2172-12, LTC2171-12, LTC2170-12 (Analog Devices) - 31

LTC2172-12/ LTC2171-12/LTC2170-12
Typical applicaTions LTC2172 Schematic
SENSE PAR/SER R14 C4 1k 1µF SDO C17 1µF VDD C5 1µF 52 51 50 49 48 47 46 45 44 43 42 41 AIN1 + – + – V DD V DD GND V REF SER SDO GND SENSE DIGITAL OUT1A OUT1A OUT1B OUT1B OUTPUTS 1 PAR/ 40 A C29 A + IN1 IN1 OUT2A+ 0.1µF 2 39 A – IN1 OUT2A– 3 38 A V IN2 CM12 OUT2B+ 4 37 A + IN2 OUT2B– 5 36 AIN2 A – IN2 DCO+ 6 35 REFH LTC2172 DCO– 7 34 REFH OV C1 C30 DD OVDD 8 33 C2 2.2µF 0.1µF C16 REFL OGND 0.1µF 0.1µF 9 32 REFL FR+ C3 10 31 0.1µF A + IN3 FR– 11 30 A A – IN3 IN3 OUT3A+ 12 29 A V IN3 CM34 OUT3A– 13 28 A + IN4 OUT3B+ C59 14 27 A – 0.1µF IN4 OUT3B– – + – + DIGITAL AIN4 + – OUTPUTS AIN4 V DD V DD ENC ENC CS SCK SDI GND OUT4B OUT4B OUT4A OUT4A 15 16 17 18 19 20 21 22 23 24 25 26 VDD C7 0.1µF SPI BUS C47 C46 0.1µF 0.1µF ENCODE ENCODE 217212 TA02 CLOCK CLOCK 21721012fb 31 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Digital Inputs and Outputs Power Requirements Timing Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts