參數(shù)資料
型號(hào)： TC815CBU
廠商： Microchip Technology Inc.
元件分類： 顯示驅(qū)動(dòng)器
英文描述： 3-1/2 Digit Auto-Ranging A/D Converter with Triplex LCD Drive and Display Hold Function
中文描述： 3-1/2數(shù)字自動(dòng)測(cè)距的A / D三層液晶顯示驅(qū)動(dòng)器和轉(zhuǎn)換器保持功能
文件頁(yè)數(shù)： 6/26頁(yè)
文件大?。?/td> 595K
代理商： TC815CBU
TC815
DS21474B-page 6
2002 Microchip Technology Inc.
35
36
37
38
39
40
41
42
43
44
45
46
47
R1
R2
R3
R4
R5
VR3
VR2
VR5
VR4
V
I
I
I
ACVL
C
I
Standard resistor connection for 200
full scale.
Standard resistor connection for 2000
full scale.
Standard resistor connection for 20k
full scale range.
Standard resistor connection for 200k
full scale range.
Standard resistor connection for 2000k
full scale range.
Voltage measurement ÷ 100 attenuator.
Voltage measurement ÷ 10 attenuator.
Voltage measurement ÷ 10,000 attenuator.
Voltage measurement ÷ 1000 attenuator.
Unknown voltage input ÷ 1 attenuator.
Unknown current input.
Low output of AC to DC converter.
Integrator capacitor connection. Nominally 0.1μf. (Low dielectric absorption. Polypropylene
dielectrics suggested.)
No connection.
Auto-zero capacitor connection; nominally 0.1μf.
Unknown resistance input.
Input filter connection.
Negative input of internal AC to DC operational amplifier.
Output of internal AC to DC operational amplifier.
Active buffer output for resistance measurement. Integration resistor connection. Integrator
resistor nominally 220k
.
Active buffer output for voltage and current measurement. Integration resistor connection.
Integration resistor nominally 150k
.
Positive output of AC to DC converter.
Negative supply connection for analog circuits. Connect to negative terminal of 9V battery.
Internal logic digital ground. The logic “0” level. Nominally 4.7V below V
CC
.
Input to set manual operation and change ranges.
Input to hold display. Connect to DIG GND.
Input to enter Memory Measurement mode for relative measurements. The two LSD’s are
stored and subtracted from future measurements.
Input that selects AC or DC option during voltage/current measurements. For resistance
measurements,
/
LOW
,
the ohms or low power (voltage) ohms option can be selected.
Input to select current measurement. Set to logic “0” (Digital ground) for
current measurement
No connection.
48
49
50
51
52
53
54
NC
C
AZ
R
X
CFI
AD1
AD0
R
BUF
55
RVIBUF
56
57
58
59
60
61
ACVH
V
SSA
DGND
RANGE
HOLD
-MEM
62
DS/AC
/LOW
I
63
64
NC
TABLE 2-1:
PIN FUNCTION TABLE (CONTINUED)
Pin Number
(64-Pin Plastic)
Quad Flat Package
Symbol
Description
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