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參數(shù)資料
| 型號(hào)： | AD538SD |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Real-Time Analog Computational Unit ACU |
| 中文描述： | ANALOG MULTIPLE FUNCTIONS, 0.4 MHz BAND WIDTH, CDIP18 |
| 封裝： | SIDE BRAZED, CERAMIC, DIP-18 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 167K |
| 代理商： | AD538SD |
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
V
25k
V
LOG
RATIO
100
V
25k
V
25k
V
ANTILOG
LOG
OUTPUT
100
V
AD538
INTERNAL
VOLTAGE
REFERENCE
I
V
O
I
Z
V
Z
B
+10V
–V
S
+V
S
+2V
I
Y
A
D
I
X
V
X
C
PWR
GND
SIGNAL
GND
V
Y
1
18
17
16
15
14
13
12
11
10
2
3
4
5
6
7
8
9
FEATURES
V
OUT
= V
Y
V
Z
V
X
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
m
V
Low Error
6
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
μ
V 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 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 +2V 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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD538ACHIPS | Real-Time Analog Computational Unit ACU |
| AD539 | AD539: Wideband Dual-Channel Linear Multiplier/Divider Data Sheet (Rev. A. 12/91) |
| AD539KN | Wideband Dual-Channel Linear Multiplier/Divider |
| AD539JCHIP | DIODE ZENER SINGLE 200mW 8.2Vz 20mA-Izt 0.05 3uA-Ir 6.5 SOT-323 3K/REEL |
| AD539JD | DIODE ZENER SINGLE 350mW 8.7Vz 20mA-Izt 0.05 3uA-Ir 6.5 SOT-23 3K/REEL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD538SD/883B | 功能描述:增效器/分頻器 MULT/DIV ACU IC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Multiplier 邏輯系列: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-14 |
| AD5390BCP-3 | 制造商:Analog Devices 功能描述:DAC 16-CH Resistor-String 14-bit 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8/16-CHANNEL, 14/12-BIT, 3V/5V VOLTAGE OUT DAC - Bulk |
| AD5390BCP-3-REEL | 制造商:Analog Devices 功能描述:DAC 16-CH Resistor-String 14-bit 64-Pin LFCSP EP T/R |
| AD5390BCP-3-REEL7 | 制造商:Analog Devices 功能描述:DAC 16-CH Resistor-String 14-bit 64-Pin LFCSP EP T/R |
| AD5390BCP-5 | 制造商:Analog Devices 功能描述:DAC 16-CH Resistor-String 14-bit 64-Pin LFCSP EP 制造商:Analog Devices 功能描述:14BIT DAC 16CH 5V 5390 LFCSP-64 |
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