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参数资料
| 型号： | MB203PCB |
| 厂商： | Advanced Linear Devices Inc |
| 文件页数： | 1/2页 |
| 文件大小： | 0K |
| 描述： | PCB BARE SOIC/THROUGHHOLE MIXED |
| 标准包装： | 1 |
| 主要目的： | * |
| 嵌入式： | * |
| 已用 IC / 零件： | * |
| 主要属性： | * |
| 次要属性： | * |
| 已供物品： | * |
T
ALD500/ALD523D Chipset
A/D Converter-Display Module Controller
heALD500/523D chipset is a precision 18-bit plus sign
bit dual-slope integrating analog/digital converter. De-
signed as an analog/digital 2-chip chipset to minimize
mixed signal crosstalk and noise, this A/D converter and display
module controller combination is unique to the industry. The
ALD500 analog chip or optional ALD500R functions as the dual-
slope integrator — the latter incorporates an on-chip precision
voltage reference. The digital chip, ALD523D is a dedicated con-
troller I.C. designed to conveniently interface with a variety of
LCD/VFD multiline alphanumeric character display modules. The
ALD523D features multi-function control inputs for a broad range
of user selectable functions, including up to 3 separate display
settings. The ALD523D also features power-down (sleep mode),
chip select and integration time select. Combined, the chipset of-
fers designers an immediate solution to an otherwise complex en-
gineering task that would generally require extensive development
effort using discrete components.
Chipset consisting of ALD500 Integrating Analog
Processor and ALD523D Display Module Controller
Features
The chipset is primarily intended for precision embedded dis-
play applications including embedded digital panel meters, cus-
tomized/specialized instrument displays, temperature monitoring,
high resolution voltmeters, signal conditioners, laboratory
datalogging, process monitors, and DVM for portable/field trouble-
shooting and calibration systems. Full-scale analog input range is
+/- 2.00000 VDC with a linearity of 0.005%. Up to 7 full digits
can be displayed as an A/D converter measurement value.
Configured for maximum user flexibility, the ALD523D con-
troller chip can be operated in 3 user selectable application spe-
cific functional modes; Mode A - calibrated reference, Mode B -
ratiometric, and Mode C - display only. Mode A is used primarily
for measurements against a calibrated reference voltage typically
required in precision voltmeter applications. Mode B is intended
for measurements against a ratiometric reference voltage such as
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Up to 7 full digits plus sign ( ± 9999999) display
Stand alone display module control operation.
Up to 3 separate DISPLAY settings.
Compatible with industry standard 1-line or 2-line x
16 character display module such as LCD or VFD
+/-3V to +/-5V power supply.
Accepts most industry standard serial inputs up to
32-bits, including sign bit.
3 selectable operating modes.
PC based software included for calibration
and initial setup.
Software
those required in weigh scale applications. Mode C is used for
display applications where the input data is already formatted in
industry standard serial binary from other microprocessors or data
converters - up to 32 serial bits including a sign bit. In Mode C,
only the digital ALD523D chip is required.
In addition to the three modes of operation, up to three sepa-
rate display group settings are available, each with different scale
factors and UNIT displays. For applications such as embedded
measurement instrument modules, up to three separate ranges of
a single measurement can be preset, selected and displayed. Both
software and hardware based settings are available for setting a
Standard PC setup/calibration software is pro-
vided for use with the chipset. This software is used
to initially configure the ALD523D controller chip
in any of the 3 operating modes, as well as to per-
form system calibration and to establish user-defined
alphanumeric “TITLE and UNIT fields” for the dis-
play module, which are stored in an external
EEPROM. Communications between the ALD523D
and PC are performed over the parallel printer port.
variety of parameters such as Samples Averaging, Decimal Place-
ment, Digits Blanking, Zero Level, Display Group Setting, Mode
Selection, UNIT Labeling, and Calibration.
www.aldinc.com
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