AS8501 datasheet(3/40 Pages) AMSCO

3 / 40 page

AS8501 - Preliminary Data Sheet

austriamicrosystems

Revision 1.1, 04-April-06

www.austriamicrosystems.com

Page 3 of 40

PIN function description for SOIC 16 package

Name

description

Comment

RSHL

anlalog input from shunt resistor low side

analog common for VBAT, ETS and ETR; return for internal

current source

RSHH

anlalog input from shunt resistor high side

ETS

analog input with reference to RSHL

analog input for differential input ETS-VBAT

analog output for current-source

VBAT

analog input with reference to RSHL

analog input for differential input ETS-VBAT

analog output for current-source

VSS

0V-power supply for analog part

EZPRG

digital power input for programming Zener fuses.

This input must be open or connected to VDDD. It is not intended,

that OTP content is modified by the user.

VSSD

0V-power supply and ground reference point for digital part

CLK

digital input for external clock, master clock input

external clock typical 8.192 MHz; during MWU-mode external

connection must be high impedance or connected to VDDD to

reduce current consumption

SCLK

serial port clock input for SDI-port

the user must provide a serial clock on this input

SDAT

serial data in- and output

INTN

Digital I/O for interrupt from comparator

signal wake-up to external µC

conversion ready flag for external interupt and synchronisation in normal mode

VDDD

+ 5V digital power supply

VDDA

+ 5V analog power supply

REF

reference input/output

must be connected to VSS with a 30 nF capacitor

AGND

analog ground, ground reference for ADC

this PIN must be connected with a 50-100nF-capacitor to VSS;

no direct connection to VSSD/VSS allowed

ETR

analog input with reference to RSHL

analog output for current-source

Table 1: Pin Description

Figure 2: Schematic Package outline SOIC 16

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