LTC1390 Datasheet | Linear Technology

LTC1390 8-Channel Analog Multiplexer with Serial Interface Features s s DESCRIPTIO s s s s s s s s s 3-Wire Serial Digital Interface Data Retransmission Allows Series Connection with Serial A/D Converters Single 3V to ± 5V Supply Operation Analog Inputs May Extend to Supply Rails Low Charge Injection Low RON: 75Ω Max Low Leakage: ± 5n A Max Guaranteed Break-Before-Make TTL/CMOS patible for All Digital Inputs Cascadable to Allow Additional Channels Can Be Used as a Demultiplexer The LTC®1390 is a high performance CMOS 8-to-1 analog multiplexer. It Features a 3-wire digital interface with a bidirectional data retransmission feature, allowing it to be wired in series with a serial A/D converter while using only one serial port. The interface also allows several LTC1390s to be wired in series or parallel, increasing the number of MUX channels available using only a single digital port. All the above Features are also valid when LTC1390 operates as a demultiplexer such as with a D/A converter. The LTC1390 Features a typical RON of 45Ω, typical switch leakage of 50p A, and guaranteed break-before-make operation. Charge injection is ±10p C maximum. All digital inputs are TTL and CMOS patible when operated from single or dual supplies. The inputs can withstand 100m A fault currents. The LTC1390 is available in 16-pin PDIP and narrow SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation. APPLICATI s s s Data Acquisition Systems munication Systems Signal Multiplexing/Demultiplexing TYPICAL APPLICATI VCC VEE VCC 1 2 3 4 ANALOG INPUTS 5 6 7 8 3-WIRE SERIAL INTERFACE TO MUX AND ADC 16 15 14 13 12 11 10 9 VCC 47k DATA CLK CS OPTIONAL A/D INPUT FILTER 1 2 3 8 7 S0 S1 S2 S3 S4 S5 S6 S7 LTC1390 V+ D V- CS +IN - IN DATA 2 DATA 1 CS CLK GND ON-RESISTANCE (Ω) CLK LTC1096 6 DOUT 4 5 VREF GND - TA01 ON-Resistance vs Analog Input Voltage 250 TA = 25°C 200 V + = 3V V - = 0V 150 100 V + = 5V V - = - 5V 50 0 - 5 - 4 - 3 - 2 -...