AS89020

AS89020 Datasheet

Coverpage AS89020 Datasheet

Part	Datasheet
AS89020	AS89020 (pdf)

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high performance needs great design. Coverpage AS89020 Datasheet Please be patient while we transfer this adapted former MAZeT document to the latest ams design. DATASHEET AS89020 4-channel, current input 12 bit analog-to-digital converter ADC SSOP20 Order No. 305040004 Status preliminary Conversion of 4 sensor signals of photodiodes e.g. RGB/XYZ color plus one blank channel for compensation of parasitic currents or temperature conversion or other sensors with current signal output 12 bit signal resolution at an achievable sensitivity of up to pA/LSB Programmable full-scale range from nA to 12 µA Sampling rate up to 100 kS/s for all channels Measurement of positive and negative currents Up to 16 MHz fast SPI-interface High amplification linearity, no cross talk High absolute accuracy and reliability without additional sources Supply and temperature independent performance Supply voltage from V to V Temperature range from -25 °C to 85 °C Deliverable in standard SSOP20 package Precise conversion of photo current for optical sensors and arrays e.g. UV, VIS, IR and other sensors with current output In combination with ams Sensors Germany’s color sensors or other multi-channel pindiodes measurement of surfaces and distances In combination with ams Sensors Germany’s color sensors measurement of light chromaticity coordinates XYZ CIE1931, DIN5033 and similar or color temperatures to control and process displays and backlights e.g. LED, CCFL In combination with ams Sensors Germany’s color and spectral sensors measurement of reflective and/or transmitted light chromaticity coordinates XYZ CIE1931, DIN5033 and similar measurement of objects and surfaces for analyses, quality management, sorting, etc. TYPICAL MARKETS Lighting SSL and photometry Industrial/commercial lighting Chemical and biochemical analyses Industrial process control Medical and environment instrumentation Infotainment backlights and video walls and monitors High quality consumer displays and tablets ams Sensors Germany GmbH db09284e V3.01 2017-07-06 Production data information is current as of publication date. Products conform to specifications per the terms of ams Sensors Germany GmbH. The information in this document is subject of change without notice, please confirm that this is the latest version. Please check with a ams Sensors Germany sales representative for availability and further information. Full legal notices can be found on the final page. AS89020 V3.01 FEATURES 1 APPLICATIONS 1 TYPICAL MARKETS 1 1 GENERAL DESCRIPTION 3 2 ELECTRICAL CHARACTERISTICS 4 Absolute Maximum Ratings 4 Recommended Operating Conditions 4 Electrical Characteristics 6 3 BLOCK DIAGRAM 9 4 PIN 5 DESCRIPTION OF FUNCTION 11 Operational States 11 Power Down 11 AD 12 AD Conversion 12 Input 14 Temperature Compensation 15 ORDERING INFORMATION 28 LEGAL NOTES AND WARNINGS 29 AS89020 V3.01 1 GENERAL DESCRIPTION Transimpedance amplifiers TIA used as current-voltage converters ensure continuous signal processing at high signal frequencies, thus meeting the demands of e.g. automated processes. They are best suited to synchronous measuring procedures in the kilohertz range, where fast converters are required to scan optical signals. Examples include sensors for quality testing in inline manufacturing processes or those in touchless handheld devices. ams Sensors Germany offers several multichannel TIAs with digital and analog interface. The AS89020 is a 12 bit, 4 channel, current input analog-to-digital converter ADC . It combines currentto-voltage TIA and analog-to-digital AD conversion, so that 4 separate current output devices e.g. photodiodes can be directly connected to its inputs and digitized. For each of the 4 inputs the AS89020 provides an input amplifier with a track and hold circuit. The outputs of the track and hold stages are serial converted to 12 bit digital words using an analog-to-digital converter ADC . The 12 bit conversion results are available via SPI at a frequency up to 16 MHz and a conversion time as low as 1 µs per channel. The input amplifier is separately programmable for each channel in 17 stages. This results in a programmable full-scale range for the ADC from nA to 12 µA and a sensitivity up to pA/LSB. Input currents of both polarities can be fed to each of the input amplifiers. The adjustment is realized by digital programming of each channel separately via standard SPI-interface. All reference voltages are implemented internally only some external passive devices are needed to complete their operating mode. The AS89020 supports Power Down functions for low power solutions. Based on the high flexibility the AS89020 is suitable as a converter for a wide range of multi-channel optoelectronic sensors UV, VIS, NIR, IR or other sensors with current output. The device achieves a high dynamic range. The combination of ams Sensors Germany’s color sensors with AS89020 is excellently suited especially for fast color measurement and control in printing and automation, for mobile color measurement devices but also for photometry applications brightness, color coordinate and/or color temperature , for determining current values for control of spectrally mixed LED light sources or as sensors for display and back light calibration and mobile devices for light measurement. The sensor compact signal IC is available in a SSOP20 package and or as bar die on request. ams.com db09284e_V3.01_preliminary_2017-07-06 Page 3 of 30 AS89020 V3.01 2 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings Violations of absolute maximum conditions are not allowed under any circumstances otherwise the IC can be destroyed. All voltages are referenced to VSSA = VSS = 0 V. Table 1 Maximum conditions PARAMETER NAME UNIT Power Supply analog VDDA Input and Output Voltages analog VIOA VDDA+0.5 Power Supply digital Input and Output Voltages digital VIOD VDD+0.5 Supply Voltage Difference VDDD-VDDA1 DIFF_VDD Storage Temperature TSTG +150 Weight ORDERING INFORMATION NAME AS89020 Status Series PACKAGE SSOP20 Article 305040004 ams.com For more information please contact: ams Sensors Germany GmbH Göschwitzer Straße 32 07745 JENA \| GERMANY Phone +49 3641 2809-0 Fax +49 3641 2809-12 db09284e_V3.01_preliminary_2017-07-06 Page 28 of 30 AS89020 V3.01 LEGAL NOTES AND WARNINGS Failure to comply with these instructions could result in death or serious injury. Misuse of documentation The information contained in this document is the property of ams Sensors Germany. Photocopying or otherwise reproducing any part of the catalog, whether electronically or mechanically is prohibited, except where the express permission of ams Sensors Germany GmbH has been obtained. In general, all company and brand names, as well as the names of individual products, are protected by brand, patent or product law. State of document - The information provided in this document is for reference only. Do not use this document as product installation guide since products can be under development to improve performance or any other purpose. Before you start any development or place an order please contact your supplier or ams Sensors Germany for the latest version of this document. ams Sensors Germany explicitly reserves the right to make technical changes to information described in the document. Information and Disclaimer The information provided in this document is based on the knowledge of the ams Sensors Germany GmbH as of the date of publication. The ams Sensors Germany GmbH cannot give warranty regarding the accuracy of information provided by third parties. ams Sensors Germany may not have conducted testing or chemical analysis on all incoming material or chemicals. ams Sensors Germany GmbH performs and continues to perform reasonable measures to provide the most accurate data at the given time. Additional efforts to integrate information provided by third parties are performed and continue to be performed. Certain supplier information may be proprietary or limited and not available at release. Personal Injury All products are conform to the specifications in accordance with the terms and conditions of ams Sensors Germanys standard warranty. Production processing does not necessarily include testing of all parameters. RoHS Directive 2011/65/EU /REACH INFORMATION - RoHS compliance and PB free The products of ams Sensors Germany fully comply with the current RoHS-directives. Our semiconductor products do not contain any of the six substance chemical categories, for example including the restriction on lead usage lead weight may not exceed in homogeneous materials . RoHS compliant products are suitable for the usage in lead-free specified processes, when designed to be soldered at high temperatures. REACH information ams Sensors Germany products do not contain any of the latest REACH Substances of Very High Concern SVHC regarding the Europe Union EU Regulation The latest 155 substances restricted per the REACH Regulation were last updated on June 16, Please refer to the following for the most current candidate list of substances: ams Sensors Germany solutions are not designed or intended for use in critical applications, in which the failures or malfunctions of the product may result in personal injury or death. Use of ams Sensors Germany products in life support systems is expressly unauthorized and any use by customer is completely at their own risk. In the case of a restricted use of the product described here, an application of the product outside of this limitation is at your own risk. ams.com db09284e_V3.01_preliminary_2017-07-06 Page 29 of 30 AS89020 V3.01 Legal liability - ams Sensors Germany assumes no responsibility for the use of any foreign products or circuits described in this document or customer product design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that the foreign circuits are free of patent infringement. ams Sensors Germany further makes no claim as to the suitability of its products for any particular purpose, nor does ams Sensors Germany assume any liability arising out of the use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ESD Warning Sensor handling precautions should be observed to avoid static discharge WEEE Disposal - The product should be disposed in to according the Directive 2002/96 / EC of the European Council on Waste Electrical and Electronic Equipment [WEEE] and the German electoral law [ElektroG] of 16 March Please contact our technical support if you need more details. ams.com db09284e_V3.01_preliminary_2017-07-06 Page 30 of 30

PDF Datasheet Preview

high performance needs great design.

Coverpage AS89020 Datasheet

Please be patient while we transfer this adapted former MAZeT document to the latest ams design.

DATASHEET AS89020
4-channel, current input 12 bit analog-to-digital converter ADC SSOP20

Order No. 305040004 Status preliminary

Conversion of 4 sensor signals of photodiodes e.g. RGB/XYZ color plus one blank channel for compensation of parasitic currents or temperature conversion or other sensors with current signal output
12 bit signal resolution at an achievable sensitivity of up to pA/LSB

Programmable full-scale range from nA to 12 µA

Sampling rate up to 100 kS/s for all channels

Measurement of positive and negative currents

Up to 16 MHz fast SPI-interface High amplification linearity, no cross talk High absolute accuracy and reliability
without additional sources Supply and temperature independent
performance Supply voltage from V to V Temperature range from -25 °C to 85 °C Deliverable in standard SSOP20 package

Precise conversion of photo current for optical sensors and arrays e.g. UV, VIS, IR and other sensors with current output

In combination with ams Sensors Germany’s color sensors or other multi-channel pindiodes measurement of surfaces and distances

In combination with ams Sensors Germany’s color sensors measurement of light chromaticity coordinates XYZ CIE1931, DIN5033 and similar or color temperatures to control and process displays and backlights e.g. LED, CCFL

In combination with ams Sensors Germany’s color and spectral sensors measurement of reflective and/or transmitted light chromaticity coordinates XYZ CIE1931, DIN5033 and similar measurement of objects and surfaces for analyses, quality management, sorting, etc.

TYPICAL MARKETS

Lighting SSL and photometry Industrial/commercial lighting Chemical and biochemical analyses Industrial process control Medical and environment instrumentation Infotainment backlights and video walls
and monitors High quality consumer displays and tablets
ams Sensors Germany GmbH db09284e V3.01 2017-07-06

Production data information is current as of publication date. Products conform to specifications per the terms of ams Sensors Germany GmbH. The information in this document is subject of change without notice, please confirm that this is the latest version. Please check with a ams Sensors Germany sales representative for availability and further information. Full legal notices can be found on the final page.

AS89020 V3.01

FEATURES 1

APPLICATIONS 1

TYPICAL MARKETS 1
1 GENERAL DESCRIPTION 3
2 ELECTRICAL CHARACTERISTICS 4

Absolute Maximum Ratings 4

Recommended Operating Conditions 4

Electrical Characteristics 6
3 BLOCK DIAGRAM 9
4 PIN
5 DESCRIPTION OF FUNCTION 11

Operational States 11

Power Down 11

AD 12

AD Conversion 12

Input 14

Temperature Compensation 15
ORDERING INFORMATION 28

LEGAL NOTES AND WARNINGS 29

AS89020 V3.01
1 GENERAL DESCRIPTION Transimpedance amplifiers TIA used as current-voltage converters ensure continuous signal processing at high signal frequencies, thus meeting the demands of e.g. automated processes. They are best suited to synchronous measuring procedures in the kilohertz range, where fast converters are required to scan optical signals. Examples include sensors for quality testing in inline manufacturing processes or those in touchless handheld devices. ams Sensors Germany offers several multichannel TIAs with digital and analog interface.

The AS89020 is a 12 bit, 4 channel, current input analog-to-digital converter ADC . It combines currentto-voltage TIA and analog-to-digital AD conversion, so that 4 separate current output devices e.g. photodiodes can be directly connected to its inputs and digitized.

For each of the 4 inputs the AS89020 provides an input amplifier with a track and hold circuit. The outputs of the track and hold stages are serial converted to 12 bit digital words using an analog-to-digital converter ADC .

The 12 bit conversion results are available via SPI at a frequency up to 16 MHz and a conversion time as low as 1 µs per channel.

The input amplifier is separately programmable for each channel in 17 stages. This results in a programmable full-scale range for the ADC from nA to 12 µA and a sensitivity up to pA/LSB.

Input currents of both polarities can be fed to each of the input amplifiers. The adjustment is realized by digital programming of each channel separately via standard SPI-interface.

All reference voltages are implemented internally only some external passive devices are needed to complete their operating mode.

The AS89020 supports Power Down functions for low power solutions.

Based on the high flexibility the AS89020 is suitable as a converter for a wide range of multi-channel optoelectronic sensors UV, VIS, NIR, IR or other sensors with current output. The device achieves a high dynamic range.

The combination of ams Sensors Germany’s color sensors with AS89020 is excellently suited especially for fast color measurement and control in printing and automation, for mobile color measurement devices but also for photometry applications brightness, color coordinate and/or color temperature , for determining current values for control of spectrally mixed LED light sources or as sensors for display and back light calibration and mobile devices for light measurement.

The sensor compact signal IC is available in a SSOP20 package and or as bar die on request.
ams.com
db09284e_V3.01_preliminary_2017-07-06

Page 3 of 30

AS89020 V3.01
2 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings

Violations of absolute maximum conditions are not allowed under any circumstances otherwise the IC can be destroyed.

All voltages are referenced to VSSA = VSS = 0 V.

Table 1 Maximum conditions

PARAMETER

NAME

UNIT

Power Supply analog

VDDA

Input and Output Voltages analog

VIOA

VDDA+0.5

Power Supply digital

Input and Output Voltages digital

VIOD

VDD+0.5

Supply Voltage Difference VDDD-VDDA1

DIFF_VDD

Storage Temperature

TSTG
+150

Weight
ORDERING INFORMATION

NAME AS89020

Status Series

PACKAGE SSOP20

Article 305040004
ams.com

For more information please contact:
ams Sensors Germany GmbH Göschwitzer Straße 32 07745 JENA | GERMANY

Phone +49 3641 2809-0 Fax +49 3641 2809-12
db09284e_V3.01_preliminary_2017-07-06

Page 28 of 30

AS89020 V3.01

LEGAL NOTES AND WARNINGS

Failure to comply with these instructions could result in death or serious injury.

Misuse of documentation The information contained in this document is the property of ams Sensors Germany. Photocopying or otherwise reproducing any part of the catalog, whether electronically or mechanically is prohibited, except where the express permission of ams Sensors Germany GmbH has been obtained. In general, all company and brand names, as well as the names of individual products, are protected by brand, patent or product law.

State of document - The information provided in this document is for reference only. Do not use this document as product installation guide since products can be under development to improve performance or any other purpose. Before you start any development or place an order please contact your supplier or ams Sensors Germany for the latest version of this document. ams Sensors Germany explicitly reserves the right to make technical changes to information described in the document.

Information and Disclaimer The information provided in this document is based on the knowledge of the ams Sensors Germany GmbH as of the date of publication. The ams Sensors Germany GmbH cannot give warranty regarding the accuracy of information provided by third parties. ams Sensors Germany may not have conducted testing or chemical analysis on all incoming material or chemicals. ams Sensors Germany GmbH performs and continues to perform reasonable measures to provide the most accurate data at the given time. Additional efforts to integrate information provided by third parties are performed and continue to be performed. Certain supplier information may be proprietary or limited and not available at release.

Personal Injury All products are conform to the specifications in accordance with the terms and conditions of ams Sensors Germanys standard warranty. Production processing does not necessarily include testing of all parameters.

RoHS Directive 2011/65/EU /REACH INFORMATION - RoHS compliance and PB free The products of ams Sensors Germany fully comply with the current RoHS-directives. Our semiconductor products do not contain any of the six substance chemical categories, for example including the restriction on lead usage lead weight may not exceed in homogeneous materials . RoHS compliant products are suitable for the usage in lead-free specified processes, when designed to be soldered at high temperatures.

REACH information ams Sensors Germany products do not contain any of the latest REACH Substances of Very High Concern SVHC regarding the Europe Union EU Regulation The latest 155 substances restricted per the REACH Regulation were last updated on June 16, Please refer to the following for the most current candidate list of substances:
ams Sensors Germany solutions are not designed or intended for use in critical applications, in which the failures or malfunctions of the product may result in personal injury or death. Use of ams Sensors Germany products in life support systems is expressly unauthorized and any use by customer is completely at their own risk. In the case of a restricted use of the product described here, an application of the product outside of this limitation is at your own risk.
ams.com
db09284e_V3.01_preliminary_2017-07-06

Page 29 of 30

AS89020 V3.01

Legal liability - ams Sensors Germany assumes no responsibility for the use of any foreign products or circuits described in this document or customer product design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that the foreign circuits are free of patent infringement. ams Sensors Germany further makes no claim as to the suitability of its products for any particular purpose, nor does ams Sensors Germany assume any liability arising out of the use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages.

ESD Warning Sensor handling precautions should be observed to avoid static discharge

WEEE Disposal - The product should be disposed in to according the Directive 2002/96 / EC of the European Council on Waste Electrical and Electronic Equipment [WEEE] and the German electoral law [ElektroG] of 16 March Please contact our technical support if you need more details.
ams.com
db09284e_V3.01_preliminary_2017-07-06

Page 30 of 30

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 AS89020 Datasheet file may be downloaded here without warranties.

Datasheet ID: AS89020 519785