AD538

更新时间： 2024-11-23 06:36:11

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
11页	170K
描述
Real-Time Analog Computational Unit ACU

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中文翻译

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数据手册

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AD538 数据手册

Real-Time Analog

Computational Unit (ACU)

AD538

FUNCTIONAL BLOCK DIAGRAM

FEATURES

V_Z

V_OUT= V_Y

Transfer Function

V_X

Wide Dynamic Range (Denominator) –1000:1

Simultaneous Multiplication and Division

Resistor-Programmable Powers and Roots

No External Trims Required

LOG

25k⍀

RATIO

+10V

+2V

Low Input Offsets <100 ␮V

Low Error ؎0.25% of Reading (100:1 Range)

+2 V and +10 V On-Chip References

Monolithic Construction

25k⍀

100⍀

SIGNAL

GND

INTERNAL

VOLTAGE

PWR

GND

REFERENCE

AD538

APPLICATIONS

One- or Two-Quadrant Mult/Div

Log Ratio Computation

Squaring/Square Rooting

Trigonometric Function Approximations

Linearization Via Curve Fitting

Precision AGC

–V

OUTPUT

25k⍀

ANTILOG

LOG

25k⍀

Power Functions

PRODUCT DESCRIPTION

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 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 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.

The AD538’s overall transfer function is V_O= V_Y(V_Z/V_X)^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.

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.

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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中文翻译

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AD5380BST-3-REEL	ADI	获取价格	暂无描述
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AD5380BSTZ-3	ADI	获取价格	40-Channel, 3 V/5 V, Single-Supply 12-Bit, denseDAC
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AD5381	ADI	获取价格	40-Channel, 3 V/5 V, Single-Supply, 12-Bit, Voltage Output DAC

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