Datasheet ADGS5414 (Analog Devices)

SPI Interface, Octal SPST Switches, 13.5 Ω R ON, ±20 V/+36 V, Mux Data Sheet ADGS5414 FEATURES FUNCTIONAL BLOCK DIAGRAM SPI interface with error detection ADGS5414 Includes CRC, invalid read/write address, and SCLK count S1 D1 error detection S2 D2 Supports burst and daisy-chain mode S3 D3 S4 D4 Industry-standard SPI Mode 0 and Mode 3 interface- S5 D5 compatible S6 D6 Guaranteed break-before-make switching, allowing external S7 D7 wiring of switches to deliver multiplexer configurations S8 D8 VSS to VDD analog signal range SPI Fully specified at ±15 V, ±20 V, +12 V, and +36 V INTERFACE SDO 9 V to 40 V single-supply operation (VDD)
001
±9 V to ±22 V dual-supply operation (V
02-
DD/VSS) SCLK SDI CS RESET/VL
159
8 kV HBM ESD rating
Figure 1.
Low on resistance 1.8 V logic compatibility with 2.7 V ≤ VL ≤ 3.3 V APPLICATIONS Relay replacement Automatic test equipment Data acquisition Instrumentation Avionics Audio and video switching Communication systems GENERAL DESCRIPTION
The ADGS5414 contains eight independent single-pole/single-
PRODUCT HIGHLIGHTS
throw (SPST) switches. An SPI interface controls the switches 1. The SPI interface removes the need for parallel conversion, and has robust error detection features, including cyclic logic traces, and reduces the general-purpose input/output redundancy check (CRC) error detection, invalid read/write (GPIO) channel count. address error detection, and SCLK count error detection. 2. Daisy-chain mode removes the need for additional logic It is possible to daisy-chain multiple ADGS5414 devices together. traces when using multiple devices. This enables the configuration of multiple devices with a minimal 3. CRC error detection, invalid read/write address error amount of digital lines. The ADGS5414 can also operate in burst detenction, and SCLK count error detection ensures a mode to decrease the time between SPI commands. robust digital interface. Each switch conducts equally well in both directions when on, and 4. CRC and error detection capabilities allow the use of the each switch has an input signal range that extends to the supplies. ADGS5414 in safety critical systems. In the off condition, signal levels up to the supplies are blocked. 5. Break-before-make switching allows external wiring of the switches to deliver multiplexer configurations. The on-resistance profile is flat over the full analog input range, 6. The trench isolation analog switch section guards against ensuring ideal linearity and low distortion when switching latch-up. A dielectric trench separates the positive and audio signals. The ADGS5414 exhibits break-before-make negative channel transistors, preventing latch-up even under switching action, allowing the use of the device in multiplexer severe overvoltage conditions. applications with external wiring.
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ±15 V DUAL SUPPLY ±20 V DUAL SUPPLY 12 V SINGLE SUPPLY 36 V SINGLE SUPPLY CONTINUOUS CURRENT PER CHANNEL, Sx OR Dx Pins TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS TERMINOLOGY THEORY OF OPERATION ADDRESS MODE ERROR DETECTION FEATURES CRC Error Detection SCLK Count Error Detection Invalid Read/Write Address Error CLEARING THE ERROR FLAGS REGISTER BURST MODE SOFTWARE RESET DAISY-CHAIN MODE POWER-ON RESET BREAK-BEFORE-MAKE SWITCHING TRENCH ISOLATION APPLICATIONS INFORMATION POWER SUPPLY RAILS POWER SUPPLY RECOMMENDATIONS REGISTER SUMMARY REGISTER DETAILS SWITCH DATA REGISTER ERROR CONFIGURATION REGISTER ERROR FLAGS REGISTER BURST ENABLE REGISTER SOFTWARE RESET REGISTER OUTLINE DIMENSIONS ORDERING GUIDE