| |
Low
Tempco Precision Voltage Reference Added to
Integrating Dual Slope Front-end Analog Processor Chip
Sunnyvale,
CA September 15, 1999 -- Advanced Linear Devices, Inc., introduces
a new family of CMOS Integrating Dual Slope Analog Processors with an
on-chip precision voltage reference. Designed to improve overall system
performance and measurement accuracy, the standard reference voltage
output (Vref) is preset at 1.000V and can be specified with an tolerance
of 0.2%, 0.3% or 0.5%. Maximum guaranteed temperature coefficients (Vref
tempco) range from 10 to 50ppm/degrees C. Utilizing its EPAD® technology
for trimming analog circuits, ALD can supply other application specific
voltage outputs or tempcos as required.
Available
with resolutions of 16, 17 and 18 bits plus sign bit and overrange bit,
the ALD500R, 500RA and 500RAU features low linearity errors typically
0.001% full scale, 6mW total power dissipation, 2pA input current at
0V, +/- 3.5V input signal range, and a 1µs fast zero-crossing
comparator. Conversion speed can be regulated by an external microprocessor
under software control or by utilizing fixed logic digital inputs. They
are ideally suited for a variety of high accuracy line powered and portable
digital multimeter applications requiring 4 1/2 to 5 1/2 digit plus
sign measurement resolution.
Applications
for the ALD500R A/D Converter chips include precision sensor and scientific
measurement add-on modules and boards for PC based systems. Also, PCMCIA
lap top computer add-on precision multimeters, battery operated DVMs
with on-board microcontroller, RTD precision temperature sensing, medical
grade electronic equipment, and other custom ASIC based systems which
demand low cost, low noise integrating analog measurement with resolution
of up to +/- 6 digits.
Prices
start at $ 2.36 US in 10k pcs for standard ALD500R 16-bit devices to
$3.09 for the "RAU" 18-bit grade. Industrial and MIL temperature
grade devices are also available. Standard packaging options includes
20-pin plastic DIP, CDIP, QSOP and small outline SOIC. Evaluation quantities
are available from stock.
Advanced
Linear Devices, Inc. develops and manufactures a full line of precision
CMOS linear integrated circuits, including analog switches, D/A converters,
voltage comparators, operational amplifiers, conventional and EPAD"
(Electrically Programmable Analog Device) MOSFET transistors. Most standard
devices are available as ASIC cells for the development of semi-custom
integrated circuits.
Download
Data Sheet ALD500RAU/ALD500RA/ALD500R
©2005
Copyright Advanced Linear Devices, Inc. All Rights Reserved.
|
