Datenblatt-Suchmaschine für elektronische Bauteile |
|
AD5172BRM2.5 Datenblatt(PDF) 1 Page - Analog Devices |
|
AD5172BRM2.5 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 24 page 256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers AD5172/AD5173 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved. FEATURES 2-channel, 256-position OTP (one-time programmable) set-and-forget resistance setting, low cost alternative to EEMEM Unlimited adjustments prior to OTP activation OTP overwrite allows dynamic adjustments with user defined preset End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Compact MSOP-10 (3 mm × 4.9 mm) package Fast settling time: tS = 5 µs typ in power-up Full read/write of wiper register Power-on preset to midscale Extra package address decode pins AD0 and AD1 (AD5173) Single supply 2.7 V to 5.5 V Low temperature coefficient: 35 ppm/°C Low power, IDD = 6 µA max Wide operating temperature: –40°C to +125°C Evaluation board and software are available Software replaces µC in factory programming applications APPLICATIONS Systems calibration Electronics level setting Mechanical Trimmers® replacement in new designs Permanent factory PCB setting Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment GENERAL OVERVIEW The AD5172/AD5173 are dual channel, 256-position, one-time programmable (OTP) digital potentiometers1 that employ fuse link technology to achieve memory retention of resistance setting. OTP is a cost-effective alternative to EEMEM for users who do not need to program the digital potentiometer setting in memory more than once. This device performs the same elec- tronic adjustment function as mechanical potentiometers or variable resistors with enhanced resolution, solid-state reliabil- ity, and superior low temperature coefficient performance. The AD5172/AD5173 are programmed using a 2-wire, I2C compatible digital interface. Unlimited adjustments are allowed before permanently setting the resistance value. During OTP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer). FUNCTIONAL BLOCK DIAGRAMS A1 VDD GND SDA SCL W1 RDAC REGISTER 1 SERIAL INPUT REGISTER B1 A2 W2 RDAC REGISTER 2 B2 FUSE LINKS 12 / 8 Figure 1. AD5172 VDD GND SDA SCL AD0 AD1 W1 RDAC REGISTER 1 ADDRESS DECODE SERIAL INPUT REGISTER B1 W2 RDAC REGISTER 2 B2 FUSE LINKS 12 / 8 Figure 2. AD5173 Unlike traditional OTP digital potentiometers, the AD5172/ AD5173 have a unique temporary OTP overwrite feature that allows for new adjustments even after the fuse has been blown. However, the OTP setting is restored during subsequent power- up conditions. This feature allows users to treat these digital potentiometers as volatile potentiometers with a programmable preset. For applications that program the AD5172/AD5173 at the factory, Analog Devices offers device programming software running on Windows® NT®, 2000, and XP® operating systems. This software effectively replaces any external I2C controllers, thus enhancing the time-to-market of the user’s systems. 1The terms digital potentiometer, VR, and RDAC are used interchangeably. |
Ähnliche Teilenummer - AD5172BRM2.5 |
|
Ähnliche Beschreibung - AD5172BRM2.5 |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |