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SMD1108 Dataheets PDF



Part Number SMD1108
Manufacturers Summit Microelectronics
Logo Summit Microelectronics
Description 8-Channel Auto-Monitor ADC
Datasheet SMD1108 DatasheetSMD1108 Datasheet (PDF)

www.DataSheet4U.com SUMMIT MICROELECTRONICS, Inc. 8-Channel Auto-MonitorTM ADC In System Programmable Analog (ISPATM) Device FEATURES ! Programmable 8 Channel 10-Bit A to D con- SMD1108 Preliminary ! Programmable LED Driver Outputs ! Programmable, Nonvolatile Combinatorial Reset verter " Programmable Sequencing of Analog Switches in Auto-Monitor Mode " Resolution of 10 bits " Differential Non-Linearity of ±1LSB " Top 4 Channels Programmable, Nonvolatile Upper/Lower IRQ Limits " Bottom 4 Chan.

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www.DataSheet4U.com SUMMIT MICROELECTRONICS, Inc. 8-Channel Auto-MonitorTM ADC In System Programmable Analog (ISPATM) Device FEATURES ! Programmable 8 Channel 10-Bit A to D con- SMD1108 Preliminary ! Programmable LED Driver Outputs ! Programmable, Nonvolatile Combinatorial Reset verter " Programmable Sequencing of Analog Switches in Auto-Monitor Mode " Resolution of 10 bits " Differential Non-Linearity of ±1LSB " Top 4 Channels Programmable, Nonvolatile Upper/Lower IRQ Limits " Bottom 4 Channels Tied to Matching Programmable, Nonvolatile Comparators " 4 Companion Over-current Comparators ! Internal Temperature Sensor logic ! Nonvolatile Status Capture Register ! Two Programmable, Nonvolatile Watchdog Timers ! 1K-Bit Nonvolatile Memory ! Industry Standard 2-Wire Interface " Nonvolatile Configuration Registers " ADC Conversion Results " Memory Array " Mechanism for System Level Presence Detect SIMPLIFIED APPLICATION DRAWING 5V I2C 5V VCC0/CH4 OC0 CURRENT SENSOR CH1 VCC1/CH5 OC1 LDO VCC2/CH6 OC2 2.5V SMD1108 AIRFLOW SENSOR ENVIRONMENTAL MONITOR CH2 CH3 Internal Temp. Sensor OC0 EXT. TEMP. SENSOR CH0 LDO 3.3V LDO VCC3/CH7 OC3 1.8V AUXVCC SMBALERT RDY# RST# RESET# 2052 SAD ©SUMMIT MICROELECTRONICS, Inc., 2001 • 300 Orchard City Dr., Suite 131 • Campbell, CA 95008 • Phone 408-378-6461 • FAX 408-378-6586 • www.summitmicro.com Characteristics subject to change without notice 2052 2.0 10/05/01 1 SMD1108 Preliminary FUNCTIONAL BLOCK DIAGRAM WD_EN# WLDI 3 VCC 48 WDO# 2 LDO# IRQ_RST# 1 7 OC_IRQ# 12 OV_IRQ# 13 All Resistors are 100kΩ DLYD_RST# 14 RST# 15 MR# 5 AUTOMON 9 LIM_IRQ# 11 SMBALERT 4 Hi Lo Hi Lo Hi Lo Hi Lo 0 0 1 1 2 2 3 3 Programmable Combinatorial Logic 23 HEALTHY# 16 UV_OVRD Nonvolatile Programmable Combinatorial Reset Logic Reset Timer U Nonvolatile Programmable Watchdog Timer Logic U 24 FAULT# Programmable Combinatorial Interrupt Logic Nonvolatile Status Register U 10 FAULT_IRQ# VREFIN 29 -O -O NV -O NV -O VREFOUT 20 RDY# 6 10-Bit ADC Reference Select & Trim Logic NV NV U + + + + + + + + 50 mV – – – – – 50 mV 50 mV – 50 mV – – AUXVCC 42 Memory Array GPO-0 28 GPO-1 27 GPO-2 26 GPO-3 25 A0 43 A1 44 A2 45 SDA 46 SCL 47 CE# 22 Temperature Sensor 41 VCC0/CH4 40 VCC1/CH5 39 VCC2/CH6 38 VCC3/CH7 34 OC3 Serial Interface Four General Purpose Outputs Programmable Octal Analog Switch 35 OC2 36 OC1 37 OC0 Power Control & Distribution All Resistors are 100kΩ VCC 33 32 31 30 19 AGND 21 17 18 8 GND 2052 BD 1.1 CH0 CH1 CH2 CH3 Reserved PGND DGND RECOMMENDED OPERATING CONDITIONS Temperature Voltage –40ºC to 85ºC. 2.7V to 5.5V 2 2052 2.0 10/05/01 SUMMIT MICROELECTRONICS, Inc. SMD1108 Preliminary INTRODUCTION The SMD1108 is a versatile, programmable 8-channel, 10-bit Data Acquisition System that is designed to operate autonomously, relieving the system host and logic board of the environmental monitoring tasks. Programming of configuration, control and calibration values by the user can be simplified with the interface adapter and Windows GUI software obtainable from Summit Microelectronics. PIN CONFIGURATION 48-Pin TQFP 48 47 46 45 44 43 42 41 40 39 38 37 WLDI SCL SDA A2 A1 A0 AUXVCC VCC0/CH4 VCC1/CH5 VCC2/CH6 VCC3/CH7 OC0 LDO# WDO# WD_EN# SMBALERT MR# RDY# IRQ_RST# GND AUTOMON FAULT_IRQ# LIM_IRQ# OC_IRQ# 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 OC1 OC2 OC3 CH0 CH1 CH2 CH3 VREFIN GPO-0 GPO-1 GPO-2 GPO-3 OV_IRQ# DLYD_RST# RST# UV_OVRD PGND DGND AGND VREFOUT Reserved CE# HEALTHY# FAUALT# 13 14 15 16 17 18 19 20 21 22 23 24 2052 PCon 1.0 SUMMIT MICROELECTRONICS, Inc. 2052 2.0 10/05/01 3 SMD1108 Preliminary ABSOLUTE MAXIMUM RATINGS Temperature Under Bias ...................... –55°C to 125°C Storage Temperature ........................... –65°C to 150°C Lead Solder Temperature (10s) ......................... 300 °C Output Short Circuit Current ........................ # 100mA Terminal Voltage with Respect to GND (AGND, DGND & PGND tied): Digital Inputs:IRQ_RST#, WD_EN#, MR#, WLDI, SCL, CE#, A0, A1, A2, and AUTOMON .... –2V to 7V Digital Outputs: ................. LDO#, WDO#, SMBALERT#, HEALTHY#, FAULT_IRQ#, LIM_IRQ#, OC_IRQ#, RST#, OV_IRQ#, DLYD_RST#, FAULT#, RDY#, GPO-0, GPO-1, GPO-2, and GPO-3 ............................................. –2V to 7V Analog Inputs: VCC0/CH4, VCC1/CH5, VCC2/CH6, VCC3/CH7, CH0, CH1, CH2, CH3, OC1, OC2, OC3, AUXVCC, and VREFIN .............. –2V to 7V # Output shorted for no more than one second, no more than one output shorted at a time. DC OPERATING CHARACTERISTICS (Over Recommended Operating Conditions; Voltages are relative to GND) Symbol ICC ISB ILI ILO VOL1 VOL2 VOH VIL VIH VREFIN VIN1 VIN2 VIN3 IVRO Parameter Supply Current Standby Current Input leakage current Output leakage current Output low voltage Conditions (Note 1) All outputs open All outputs open, ADC idle, no memory in process VIN = 0V to VCC VOUT = 0V to VCC IOL = 5mA IOL = 1mA VCC = 5V, IOL = 2.1mA VCC < 4.5V, .


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