AS8501-ASOU

AS8501-ASOU Datasheet

AS8501

Part	Datasheet
AS8501-ASOU	AS8501-ASOU (pdf)

Related Parts	Information
AS8501-ASOT	AS8501-ASOT

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austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information Headquarters ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 e-Mail: Please visit our website at AS8501 Data Sheet 2 High precision voltage and current measurement senso3 r interface DATA SHEET 1 Features AGND VDDA VSSA 16 bits resolution INTERNAL TEMPERATURE V REFERENCE VDDD Differential inputs Single + 5V supply Low power 15 mW lid SOIC16 package Self- and system-calibration with auto-calibration on power up 16 kHz maximum sampling frequency Internal temperature measurement a Internal factory trimmed precision reference Programmable current sources v Digital comparator Active wake-up ill PGA gains 1, 6, 24, 50, 100 Zero offset Zero offset TC t Extremely low noise Internal oscillator with comparator for active wake up G s 3-wire serial interface, !P compatible Temperature range 40 to + 125 °C A t Individual 24-bit serial number 2 Applications s en Battery management for automotive systems Power management m t mV/µV-meter High-precision voltage and current measurement a n 3 General description o The AS8501 is a complete, low power data acquisition system c for very small signals i.e. voltages from shunt resistors, thermocouples that operates on a single 5 V power supply. The l chip powers up with a set of default conditions at which time it can be operated as a read-only-converter. Reprogramming is at a any time possible by just writing into two internal registers via the serial interface. ic The AS8501 has four ground refering inputs which can be HEADQUARTERS 39 Te SALES OFFICES 39 Page 2 of 40 AS8501 - Data Sheet austriamicrosystems 4 PIN function description for SOIC 16 package PIN Name RSHL anlalog input from shunt resistor low side Comment 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 lid 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 v external clock typical MHz during MWU-mode external connection must be high impedance or connected to VDDD to ill 8 CLK digital input for external clock, master clock input reduce current consumption SCLK serial port clock input for SDI-port the user must provide a serial clock on this input t 10 SDAT serial data in- and output 11 INTN Digital I/O for interrupt from comparator signal wake-up to external µ C G s conversion ready flag for external interupt and synchronisation in normal mode A t 12 VDDD + 5V digital power supply 13 VDDA + 5V analog power supply s n 14 REF reference input/output e 15 AGND analog ground, ground reference for ADC must be connected to VSS with a 30 nF capacitor this PIN must be connected with a 50-100nF-capacitor to VSS no direct connection to VSSD/VSS allowed m t 16 ETR analog input with reference to RSHL a n analog output for current-source Table 1 Pin Description Technical co Figure 2 Schematic Package outline SOIC 16 Page 3 of 40 ica 12 Ordering Information Delivery in Tape and Reel 1 reel = 1500 devices Techn Order AS8501-ASOT Page 38 of 40 AS8501 - Data Sheet austriamicrosystems 13 Contact Headquarters austriamicrosystems AG A 8141 Schloss Premstätten, Austria Phone +43 3136 500 0 Fax +43 3136 525 01 Sales Offices austriamicrosystems Germany GmbH Tegernseer Landstrasse 85 D-81539 München, Germany Phone +49 89 69 36 43 0 Fax: +49 89 69 36 43 66 austriamicrosystems USA, Inc. 8601 Six Forks Road Suite 400 Raleigh, NC 27615, USA Phone +1 919 676 5292 austriamicrosystems Italy S.r.l. Via A. Volta, 18 I-20094 Corsico MI , Italy ill Phone +39 02 4586 4364 Fax: +39 02 4585 773 t austriamicrosystems France S.A.R.L. G s 124, Avenue de Paris F-94300 Vincennes, France A t Phone +33 1 43 74 00 90 Fax: +33 1 43 74 20 98 s n austriamicrosystems Switzerland AG e Rietstrasse 4 m t CH 8640 Rapperswil, Switzerland Phone +41 55 220 9008 a n Fax: +41 55 220 9001 o austriamicrosystems UK, Ltd. c 88, Barkham Ride, Finchampstead, Wokingham l Berkshire RG40 4ET, United Kingdom Phone +44 118 973 1797 a Fax: +44 118 973 5117

PDF Datasheet Preview

austriamicrosystems AG is now
ams AG

The technical content of this austriamicrosystems datasheet is still valid.

Contact information Headquarters ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 e-Mail:

Please visit our website at

AS8501

Data Sheet
2 High precision voltage and current measurement senso3 r interface

DATA SHEET
1 Features

AGND VDDA VSSA
16 bits resolution

INTERNAL TEMPERATURE

V REFERENCE

VDDD

Differential inputs Single + 5V supply Low power 15 mW
lid SOIC16 package

Self- and system-calibration with auto-calibration on power up 16 kHz maximum sampling frequency Internal temperature measurement
a Internal factory trimmed precision reference

Programmable current sources
v Digital comparator

Active wake-up
ill PGA gains 1, 6, 24, 50, 100

Zero offset Zero offset TC
t Extremely low noise

Internal oscillator with comparator for active wake up

G s 3-wire serial interface, !P compatible

Temperature range 40 to + 125 °C

A t Individual 24-bit serial number
2 Applications
s en Battery management for automotive systems

Power management
m t mV/µV-meter

High-precision voltage and current measurement
a n 3 General description o The AS8501 is a complete, low power data acquisition system c for very small signals i.e. voltages from shunt resistors,
thermocouples that operates on a single 5 V power supply. The
l chip powers up with a set of default conditions at which time it
can be operated as a read-only-converter. Reprogramming is at
a any time possible by just writing into two internal registers via
the serial interface.
ic The AS8501 has four ground refering inputs which can be
HEADQUARTERS 39

Te SALES OFFICES 39

Page 2 of 40

AS8501 - Data Sheet
austriamicrosystems
4 PIN function description for SOIC 16 package

PIN Name

RSHL anlalog input from shunt resistor low side

Comment
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
lid 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
v external clock typical MHz during MWU-mode external
connection must be high impedance or connected to VDDD to
ill 8

CLK digital input for external clock, master clock input
reduce current consumption

SCLK serial port clock input for SDI-port
the user must provide a serial clock on this input
t 10 SDAT serial data in- and output
11 INTN Digital I/O for interrupt from comparator
signal wake-up to external µ C

G s conversion ready flag for external interupt and synchronisation in normal mode

A t 12 VDDD + 5V digital power supply
13 VDDA + 5V analog power supply
s n 14 REF reference input/output e 15 AGND analog ground, ground reference for ADC
must be connected to VSS with a 30 nF capacitor this PIN must be connected with a 50-100nF-capacitor to VSS no direct connection to VSSD/VSS allowed
m t 16 ETR analog input with reference to RSHL
a n analog output for current-source

Table 1 Pin Description

Technical co Figure 2 Schematic Package outline SOIC 16

Page 3 of 40
ica 12 Ordering Information

Delivery in Tape and Reel 1 reel = 1500 devices

Techn Order AS8501-ASOT

Page 38 of 40

AS8501 - Data Sheet
austriamicrosystems
13 Contact

Headquarters austriamicrosystems AG A 8141 Schloss Premstätten, Austria Phone +43 3136 500 0 Fax +43 3136 525 01

Sales Offices
austriamicrosystems Germany GmbH

Tegernseer Landstrasse 85

D-81539 München, Germany

Phone +49 89 69 36 43 0

Fax:
+49 89 69 36 43 66
austriamicrosystems USA, Inc. 8601 Six Forks Road Suite 400 Raleigh, NC 27615, USA Phone +1 919 676 5292
austriamicrosystems Italy S.r.l.

Via A. Volta, 18

I-20094 Corsico MI , Italy
ill Phone +39 02 4586 4364

Fax:
+39 02 4585 773
t austriamicrosystems France S.A.R.L.

G s 124, Avenue de Paris

F-94300 Vincennes, France

A t Phone +33 1 43 74 00 90

Fax:
+33 1 43 74 20 98
s n austriamicrosystems Switzerland AG
e Rietstrasse 4
m t CH 8640 Rapperswil, Switzerland

Phone +41 55 220 9008
a n Fax:
+41 55 220 9001
o austriamicrosystems UK, Ltd.
c 88, Barkham Ride,

Finchampstead, Wokingham
l Berkshire RG40 4ET, United Kingdom

Phone +44 118 973 1797
a Fax:
+44 118 973 5117

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS8501-ASOU Datasheet file may be downloaded here without warranties.

Datasheet ID: AS8501-ASOU 519776