AS5850-CSDF-240

Product

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 10

Technical content

16-Bit 256-Channel Low Noise Charge-to-Digital Converters v1-00 • 2021-Apr-08

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1 General Description

AS585xB is a family (AS5850B, AS5851B and AS5852B) of 16-bit, 256-channel low-noise charge-to- digital converters designed for digital X-Ray systems. It enables a wide range of applications for digital X-ray including static and dynamic Flat Panel Detectors (FPDs) used in radiographic imaging, digital mammography, fluoroscopy, surgery and industrial non-destructive testing. Each of the devices consists of 256 analog Charge Sensitive Amplifiers (CSA) with a programmable full-scale range, a Correlated Double Sampler (CDS) for offset compensation with programmable time constant and 128 multiplexed Analog-to-Digital Converters (ADC) for the digital readout of each pixel. The device can be configured for electrons and holes polarity and includes a voltage reference and a temperature sensor. Built-in diagnostic modes enable error detection in the signal chain. The converted channels are output on a single LVDS interface with a data rate up to 320 Mbps for optimized line time. The serial SPI interface allows the configuration of the analog frontend including timing and different power modes for low stand-by power consumptions and fast startup times. The AS5850 device is a high-speed design optimized for line times down to 20 µs for dynamic flat panel detectors. In a special low-OSR (the ADC OverSampling Ratio) mode, it can reach even shorter line times of 15 µs. Additionally, it is possible to bin together adjacent channels; with this binning, the fastest achievable line time is 10 µs. The AS5851 and AS5852 are low-power versions of AS5850 for static, portable and battery supplied flat panels with minimum power dissipations down to 1.1 mW per channel. AS585xB are the AS585x chips delivered on a Chip on Flex package to minimize sidewall distances and allow direct assembly on the X-ray panel. The Flex design can be customized according to customer requirements upon request. Alternatively, all devices can be delivered as die on foil.

1.1 Key Benefits & Features

The benefits and features of AS585xB, 16-Bit 256-Channel Low Noise Charge-to-Digital Converters are listed below: Figure 1: Added Value of Using AS585xB Benefits Features

256 Channels with 16-bit resolution Flexible and simple configuration via SPI interface

supporting daisy-chaining multiple devices Ultra-low noise down to 500 electrons at 2 pC input range for hole and electron integration Standard and customized flex delivery Low power dissipation down to 1.1 mW per channel at 80 µs line time Different power-down modes down to 1 µW per channel and fast start-up times

Short Datasheet • PUBLIC DS001023 • v1-00 • 2021-Apr-08 9 │ 4 Benefits Features Line time down to 20 µs, 15 µs with low OSR or 10 µs with binning LVDS data interface with data rate optimized readout modes including fully parallel pipeline mode Adjustable full scale range from 0.5 pC to 16 pC Correlated Double Sampling (CDS) operation for offset compensation with programmable time constant On-chip voltage reference and temperature sensor Built-in Diagnostic (anti-blooming circuit, charge injection mode, ADC test) for error detection

1.2 Applications

• X-ray Flat Panel Detectors
• Digital Radiography
• Fluoroscopy Panels and Dynamic X-ray Detectors
• Portable and Mobile X-ray Systems
• Mammography Panels
• Industrial and Security X-ray Scanners

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1.3 Block Diagram

The functional blocks of this device are shown below: Figure 2 : Functional Blocks of AS585xB ADC VDDA VDDA _ADC VDDL VSSA VSSA _ADC VSSL SUB CSA_VREF_OUT VSSA_VCHARGE CSA_VREF_IN CVREF Voltage reference generator SPI and configuration SCLK SDI SDO CS_N DOUT_P DOUT_N DCLK_P DCLK_NLVDS Interface Temperature sensor RESET_N ACLK SYNC DOUT_START FPGA 3.5V 3.5V 3.0V LOW DENSITY FLEX INTERFACE TFT PANEL HIGH DENSITY CUSTOM FLEX INTERFACE CSA CSA VDDD VSSD 1.8V CONV_DONE VCHARGE VCHARGE_AUX VADC FILT x128 CDS ADC CSA CSA FILT CDS AS585xB Chip-on-Flex 254 255 LPF Caps LPF Caps Built-in Diagnostic

Ordering Information

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2 Ordering Information

Ordering Code Package Marking Delivery Form Delivery Quantity AS5850-CSDF-240 (1) Die, 240 Channels Device AS5850-CSDF-240 Die on Foil 8 inch wafer AS5850-CSDF-256 (1) Die, 256 Channels Device AS5850-CSDF-256 Die on Foil 8 inch wafer AS5850A-CCFT-240 (1) A-type Chip on Flex (COF), 240 Channels AS5850A-CCFT-240 Reel 1500 flex/reel AS5850A-CCFT-256 A-type Chip on Flex (COF), 256 Channels AS5850A-CCFT-256 Reel 1500 flex/reel AS5850B-CCFR-256 B-type Chip on Flex (COF), 256 Channels AS5850B-CCFR-256 Tray 240 flex/package AS5851B-CCFR-256 B-type Chip on Flex (COF), 256 Channels AS5851B-CCFR-256 Tray 240 flex/package AS5852B-CCFR-256 B-type Chip on Flex (COF), 256 Channels AS5852B-CCFR-256 Tray 240 flex/package (1) Availability of these devices upon request, subject to ams approval. The B-type Flex corresponds to the FZC design described in sections 9.3, 9.4 and chapter 10 of the full AS505xB datasheet. The A-type Flex corresponds to the FUC design, not described in the AS505xB datasheet.

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3 Tray Information

Figure 3: Tray Dimensions (1) All dimensions in mm

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4 Revision Information

Document Status Product Status Definition Product Preview Pre-Development Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice Preliminary Datasheet Pre-Production Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice Datasheet Production Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade Datasheet (discontinued) Discontinued Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs Changes from previous version to current revision v1-00 Page This short datasheet was derived from v1-00 of the full datasheet

• Page and figure numbers for the previous version may differ from page and figure numbers in the current revision.
• Correction of typographical errors is not explicitly mentioned.

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5 Legal Information

Copyrights & Disclaimer Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed. ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services. RoHS Compliant & ams Green Statement RoHS Compliant: The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories plus additional 4 substance categories (per amendment EU 2015/863), including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes. ams Green (RoHS compliant and no Sb/Br/Cl): ams Green defines that in addition to RoHS compliance, our products are free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) and do not contain Chlorine (Cl not exceed 0.1% by weight in homogeneous material). Important Information: The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. Headquarters ams AG Tobelbader Strasse 30

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Austria, Europe Tel: +43 (0) 3136 500 0 Please visit our website at www.ams.com Buy our products or get free samples online at www.ams.com/Products Technical Support is available at www.ams.com/Technical-Support Provide feedback about this document at www.ams.com/Document-Feedback For sales offices, distributors and representatives go to www.ams.com/Contact For further information and requests, e-mail us at ams_sales@ams.com