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AD2S44:  Low Cost, 14-Bit, Dual Channel Synchro/Resolver-to-Digital Converter

The AD2S44 is a 14-bit dual channel, continuous tracking synchro/ resolver-to-digital converter. It has been designed specifically for applications where space, weight, and cost are at a premium. Each 32-lead hybrid device contains two independent Type II servo loop tracking converters. The ratiometric conversion technique employed provides excellent noise immunity and tolerance of long lead ...More

AD2S44:  Low Cost, 14-Bit, Dual Channel Synchro/Resolver-to-Digital Converter

Product Description

The AD2S44 is a 14-bit dual channel, continuous tracking synchro/ resolver-to-digital converter. It has been designed specifically for applications where space, weight, and cost are at a premium. Each 32-lead hybrid device contains two independent Type II servo loop tracking converters. The ratiometric conversion technique employed provides excellent noise immunity and tolerance of long lead lengths.

The core of each conversion is performed by state-of-the-art mono-lithic, integrated circuits manufactured by the Analog Devices, Inc., proprietary BiMOS II process, which combines the advantages of low power CMOS digital logic with bipolar linear circuits. The use of these ICs keeps the internal component count low and ensures high reliability.

The built-in test (BIT) facility can be used in failsafe systems to provide an indication of whether the converter is tracking accurately.

Each channel incorporates a high accuracy differential condi-tioning circuit for signal inputs providing more than 74 dB of common-mode rejection. Options are available for both synchro and resolver format inputs. The converter output is via a three-state transparent latch allowing data to be read without interruption of the converter operation. The A/B and OE control lines select the channel and present the digital position to the common data outputs.

The AD2S44 also features independent reference inputs where different reference frequencies can be used for each channel.

All components are 100% tested at −55°C, +25°C, and +125°C. Devices are processed to high reliability screening standards and receive further levels of testing and screening to ensure high levels of reliability.

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  • Low per-channel cost
  • 32-lead DIL hybrid package
  • 2.6 arc minute accuracy
  • 14-bit resolution
  • Built-in test
  • Independent reference inputs
  • High tracking rate
  • Resolution (Bits): 14bit
  • Package: DH-32E
  • Max Track Rate (+/- rps): 20
  • Accuracy (arcmin): 4
  • Temp_Range (C): -55 to +125
  • Ref Freq (Hz): 400-2.6k
  • Vel o/p: No
  • Vel Lnrty (+/- FSR max): n/a
  • Power (mW): 1700mW
  • Interface: Parallel
  • Encoder Emulation: No
  • Supplies (V): ±15V

AD2S44 Functional Block Diagram

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Part# Resolution (Bits) Max Track Rate (+/- rps) Accuracy (arcmin) Ref Freq (Hz) Vel o/p Vel Lnrty (+/- FSR max) Interface Encoder Emulation Price* (1000-4999)
AD2S1200 12 1,000 22/11 10k-20k Yes 2lsb Parallel/Serial Yes $12.14
AD2S1205 12 1,250 22/11 10k-20k Yes 2lsb Parallel/Serial Yes $12.14
AD2S1210 16 3125/1250/625/156.25 5 2k-20k Yes 2 to 16 lsb Parallel/Serial Yes $12.00
AD2S44 14 20 4 400-2.6k No n/a Parallel No -
AD2S80A 16 1040/260/65/16.25 8/4/2 50-20k Yes 3 Parallel No $50.49
AD2S83 16 1040/260/65/16.25 8 0-20k Yes 0.25 to1 Parallel No $74.63
AD2S90 12 500 10.6 3k-20k Yes n/a Serial Yes $29.22
RDC1740 14 27 5.3 400-2.6k No n/a Parallel No -
SDC1740 14 27 5.3 400-2.6k No n/a Parallel No $1191.67
SDC1741 12 18 15.3 400-2.6k No n/a Parallel No -
SDC1742 12 18 8.5 400-2.6k No n/a Parallel No $1294.22
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* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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Status
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  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.