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Details for AD538ADZ by Analog Devices
Electronic & Electrical Components > Semiconductors - ICs > Amplifiers & Comparators
ANALOGUE COMPUTATIONAL UNIT DIP-18
AD538ADZ image

AD538ADZ by Analog Devices

ANALOGUE COMPUTATIONAL UNIT DIP-18
Features
VO = VY(VZ/VX)m transfer function Wide dynamic range (denominator) u22121000:1 Simultaneous multiplication and division Resistor-programmable powers and roots No external trims required Low input offsets <100 u03bcV Low error u00b10.25% of reading (100:1 range) Monolithic construction Real-time analog multiplication, division and exponentiation High accuracy analog division with a wide input dynamic range On board +2 V or +10 V scaling reference Voltage and current (summing) input modes Monolithic construction with lower cost and higher reliability than hybrid and modular circuits
Part Information
AD538ADZ image
RoHS Compliant
Description
The AD538 is a monolithic real-time computational circuit that provides precision analog multiplication, division, and exponentiation. 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 reading 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 400 kHz bandwidth of the device. The overall transfer function of the AD538 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 simultaneous 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 flexibility of the AD538. 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.
Specifications
No. of Multipliers / Dividers:
1
No. of Amplifiers:
1 Amplifier
Supply Voltage Min:
4.5V
Supply Voltage Max:
18V
Slew Rate:
1.4V/µs
Digital IC Case:
SBDIP
No. of Pins:
18Pins
Operating Temperature Min:
-25°C
Operating Temperature Max:
85°C
Product Range:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (07-Jul-2017)
IC Function:
Analogue Computational Unit
IC Package Type:
DIP
Alternate Descriptions
Analog Multiplier/Divider 2-Bit RS Components
MULTIPLIER/DIVIDER Richardson RFPD
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