AMIS-492x0 AMIS-492x0 Fieldbus MAU Overview AMIS492x0 Fieldbus MAU (Media Access Unit) is a transceiver chip for low speed FOUNDATION Fieldbus and Profibus PA www.onsemi.com devices. The AMIS49200 was originally designed to be a near pin-for-pin replacement of the Yokogawa SAA22Q MAU. Near pin-for-pin means that associated component values may change, but no board changes are required. A micro-leadframe package option (NQFP) is also available, the AMIS49250. Features AMIS492x0 Fieldbus MAU is a transceiver IC for low speed FOUNDATION Fieldbus and Profibus PA devices. It incorporates the LQFP44, 10x10 following features: CASE 561AA All Node Power can be Supplied by the Bus, via the AMIS-492x0 Current Consumption 500 A (Typ) VCC Voltage: 6.2 V to 4.75 V VDD Voltage: 5.5 V to 2.7 V Compatible to IEC 11582 and ISA 50.02 NQFP 44, 7x7 Shunt Regulator CASE 560BD Voltage Reference (Internal Only) Series Regulator ORDERING INFORMATION Band-pass Filter See detailed ordering and shipping information in the package Slew Rate Control dimensions section on page 15 of this data sheet. Segment Current Control Low Voltage Detection Carrier Detect Data Rate: 31.25 kbps Voltage Mode Dual Voltage Supply 36.2 V 44-pin LQFP/NQFP Package These Devices are PbFree and are RoHS Compliant Applications Process Automation Pressure and Temperature Monitoring Definitions, Acronyms and Abbreviations IC Integrated Circuit ESD Electrostatic Discharge FF FOUNDATION Fieldbus LQFP Low Profile Quad Flat Pack Manchester Communications Encoding Scheme Implemented in FOUNDATION Fieldbus MAU Medium Attachment Unit MDS Medium Dependent Sub-layer NQFP Near Chip-scale Quad Flat Pack SAA22Q Name of Yokogawas MAU IC Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: August, 2016 Rev. 8 AMIS492x0/DAMIS492x0 Block Diagram 33 31 30 VSS FLTOUT FLT Receive Block RXS HPF Zero-cross 35 28 Detector SIGIN Bandpass Filter 27 LPF RXA Carrier 29 34 Detector CCD 32 Transmit Block MDS CTRL VDRV 26 Tri-level Modulator 21 POL & 38 CRT MDS 19 Slew Control TXE Interface 36 VSS TXS 20 37 VSS 22 VSS 1 CCINP VSS 23 41 CCINM Current VSS 24 42 Driver CCOUT VSS 25 43 Power Supply Block VSS VCC 39 Vmid Vmid VSS 3 40 Reference VCC VCC VCC Vmid 44 VCC Basic Vref 18 2 Bandgap Circuitry Vref VDD 17 VCC VO Shunt 16 Low Voltage 8 Series Regulator Detectors Regulator SRSET 13 VSS VSS SRSETIN 11 15 14 12 5 4 6 7 9 10 Figure 1. AMIS492x0 Fieldbus MAU Block Diagram Table 1. PIN NUMBERS AND SIGNAL DESCRIPTION Signal Pin I/O Name No. (Note 1) Description VSS 1 Ground Connect to Ground. VREF 2 AO Internal bandgap voltage (1.18 V). VMID 3 AO 2 V bias voltage for AC signals. N PFAIL1 4 AI/O Power fail alarm at VCC input. This pin is an open-drain output of negative logic. N PFAIL2 5 AI/O Power fail alarm at VDD input. This pin is an open-drain output of negative logic. SHSETIN 6 AI Feedback (non-inverting) input for the shunt regulator. SHSET 7 AO Divided voltage of VCC input. Feeding this voltage to SHSETIN pin results in 5 V voltage at VCC. 1. AI = Analog Input, AO = Analog Output, AI/O = Analog Input/Output, DIS = CMOS Digital Input (Schmitt Trigger), DO = CMOS Digital Output. www.onsemi.com 2 SRTR SRAO N PFail2 N PFail1 SHSETIN SHSET SGND SHUNT