Os motores de busca de Datasheet de Componentes eletrônicos |
|
AD883B Folha de dados(PDF) 1 Page - Analog Devices |
|
AD883B Folha de dados(HTML) 1 Page - Analog Devices |
1 / 11 page REV. C 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD538 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 Real-Time Analog Computational Unit (ACU) FUNCTIONAL BLOCK DIAGRAM 25k 25k LOG RATIO 100 25k 25k ANTILOG LOG OUTPUT 100 AD538 INTERNAL VOLTAGE REFERENCE I VO IZ VZ B +10V –VS +VS +2V IY A D IX VX C PWR GND SIGNAL GND VY 118 17 16 15 14 13 12 11 10 2 3 4 5 6 7 8 9 FEATURES VOUT = VY VZ VX m Transfer Function Wide Dynamic Range (Denominator) –1000:1 Simultaneous Multiplication and Division Resistor-Programmable Powers and Roots No External Trims Required Low Input Offsets <100 V Low Error 0.25% of Reading (100:1 Range) +2 V and +10 V On-Chip References Monolithic Construction APPLICATIONS One- or Two-Quadrant Mult/Div Log Ratio Computation Squaring/Square Rooting Trigonometric Function Approximations Linearization Via Curve Fitting Precision AGC Power Functions PRODUCT DESCRIPTION The AD538 is a monolithic real-time computational circuit that provides precision analog multiplication, division and exponen- tiation. The combination of low input and output offset voltages and excellent linearity results in accurate computation over an unusually wide input dynamic range. Laser wafer trimming makes multiplication and division with errors as low as 0.25% of read- ing possible, while typical output offsets of 100 µV or less add to the overall off-the-shelf performance level. Real-time analog signal processing is further enhanced by the device’s 400 kHz bandwidth. The AD538’s overall transfer function is VO = VY (VZ /VX) m. Programming a particular function is via pin strapping. No external components are required for one-quadrant (positive input) multiplication and division. Two-quadrant (bipolar numerator) division is possible with the use of external level shifting and scaling resistors. The desired scale factor for both multiplication and division can be set using the on-chip +2 V or +10 V references, or controlled externally to provide simulta- neous multiplication and division. Exponentiation with an m value from 0.2 to 5 can be implemented with the addition of one or two external resistors. Direct log ratio computation is possible by using only the log ratio and output sections of the chip. Access to the multiple summing junctions adds further to the AD538’s flexibility. Finally, a wide power supply range of ±4.5 V to ±18 V allows operation from standard ±5 V, ±12 V and ±15 V supplies. The AD538 is available in two accuracy grades (A and B) over the industrial (–25 °C to +85°C) temperature range and one grade (S) over the military (–55 °C to +125°C) temperature range. The device is packaged in an 18-lead TO-118 hermetic side-brazed ceramic DIP. A-grade chips are also available. PRODUCT HIGHLIGHTS 1. Real-time analog multiplication, division and exponentiation. 2. High accuracy analog division with a wide input dynamic range. 3. On-chip +2 V or +10 V scaling reference voltages. 4. Both voltage and current (summing) input modes. 5. Monolithic construction with lower cost and higher reliability than hybrid and modular circuits. |
Nº de peça semelhante - AD883B |
|
Descrição semelhante - AD883B |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes 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 |