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參數(shù)資料
| 型號： | TC818ACBU |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Auto-Ranging Analog-to-Digital Converter with 3-1/2 Digit Display |
| 中文描述： | 自動測距模擬到數(shù)字轉(zhuǎn)換器與數(shù)字顯示3-1/2 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 583K |
| 代理商： | TC818ACBU |
2002 Microchip Technology Inc.
DS21475B-page 1
TC818A
Features
Auto-Ranging Analog-to-Digital Converter with
3-1/2 Digit Display
Annunciator Outputs Permit Customizing of LCD
Auto-Range Operation for AC and DC Voltage
and Resistance Measurements
Two User Selected AC/DC
Current Ranges: 20mA and 200mA
22 Operating Ranges: 9 DC/AC Voltage
4 AC/DC Current
9 Resistance and Low Power Ohms
Display Hold Function
3-1/2 Digit Resolution in Auto-Range
Mode: 1/2000
Extended Resolution in Manual Range
Mode: 1/3000
Internal AC-to-DC Conversion Op Amp
Triplex LCD Drive for Decimal Points, Digits,
Bar Graphs, and Annunciators
Continuity Detection and Piezoelectric
Transducer Driver
Low Drift Internal Reference: 75ppm/°C
9V Battery Operation: 10mW
Low Battery Detection and LCD Annunciator
Device Selection Table
General Description
The TC818A is an integrating analog-to-digital con-
verter (ADC) with a 3-1/2 digit numeric LCD driver,
automatic ranging, and single 9V battery operation.
The numeric display provides 0.05% resolution and a
full set of annunciators that spell out the TC818A's
many operating modes.
Automatic range selection is provided for both voltage
(DC and AC) and ohms (high and low power) measure-
ments.
Expensive
and
switches are not required. Five full scale ranges are
available, with automatic selection of external volt/ohm
attenuators over a 1 to 10,000 range. Two current
ranges, 20mA and 200mA, can be manually selected.
The auto-range feature can be bypassed, allowing
input attenuator selection through a single line input.
bulky
mechanical
range
During Manual mode operation, resolution is extended
to 3000 counts full scale. Extended resolution is also
available during 2000k
and 2000V full scale auto-
range operation. The extended range operation is indi-
cated by a flashing 1 MSD and by the fully extended bar
graph.
The TC818A includes an AC-to-DC converter for AC
voltage and current measurements. Only external
diodes/resistors/capacitors are required. Other fea-
tures include a Memory mode, low battery detection,
display HOLD input, and continuity buzzer driver.
The 3-1/2 digit numeric display includes a full set of
annunciators.
Decimal points are adjusted as auto-
matic or manual range changes occur, and Voltage,
Current, and Ohms Operating modes are displayed.
Additional annunciators are activated for manual, auto,
memory, HOLD, AC, low power ohms, and low battery
conditions.
The TC818A is available in a surface mounted 64-pin
flat package. Combining a numeric display driver, sin-
gle 9V battery operation, internal range switching, and
compact surface mounting, the TC818A is ideal for
advanced portable instruments.
Part Number
Package
Operating
Temperature Range
TC818ACBU
64-PinPQFP
0
°
C to +70
°
C
Auto-Ranging Analog-to-Digital Converter
with 3-1/2 Digit Display
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