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參數(shù)資料
| 型號(hào)： | TC820CKW |
| 廠商： | TelCom Semiconductor, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 3-3/4 DIGIT A/D CONVERTER WITH FREQUENCY COUNTER AND LOGIC PROBE |
| 中文描述： | 3-3/4數(shù)字A / D轉(zhuǎn)換頻率計(jì)數(shù)器和邏輯探針轉(zhuǎn)爐 |
| 文件頁數(shù)： | 4/22頁 |
| 文件大小： | 275K |
| 代理商： | TC820CKW |
3-152
TELCOM SEMICONDUCTOR, INC.
ELECTRICAL CHARACTERISTICS
(Cont.)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Units
Buzzer Frequency
Counter Timebase Period
Low Battery Flag Voltage
Input Low Voltage
Input High Voltage
Output Low Voltage,
UR, OR Outputs
Output High Voltage,
UR, OR Outputs
Control Pin
Pull-Down Current
f
OSC
= 40kHz
f
OSC
= 40kHz
V
DD
to V
SS
—
—
6.7
—
5
1
7
—
—
—
—
—
7.3
kHz
Second
V
V
V
V
V
IL
V
IH
V
OL
DGND + 1.5
—
DGND + 0.4
V
DD
– 1.5
—
I
L
= 50
μ
A
V
OL
I
L
= 50
μ
A
V
DD
– 1.5
—
—
V
V
IN
= V
DD
—
5
—
μ
A
PIN DESCRIPTION
Pin No.
(40-Pin
Package)
Pin No.
(44-Pin Flat
Package)
Symbol
Description
1
40
L-E4
LCD segment driver for L ("logic LOW"), polarity, and "e" segment of most
significant digit (MSD).
LCD segment drive for "a," "g," and "d" segments of MSD.
LCD segment drive for "b" and "c" segments of MSD and decimal point 3.
LCD segment drive for H ("logic HIGH"), and "f" and "e" segments of third LSD.
LCD segment drive for "a," "g," and "d" segments of third LSD.
LCD segment drive for "b" and "c" segments of third LSD and decimal point 2.
LCD segment drive for "overrange," and "f" and "e" segments of second LSD.
LCD segment drive for "a," "g," and "d" segments of second LSD.
LCD segment drive for "b " and "c" segments of second LSD and decimal point 1.
LCD segment drive for "hold peak reading," and "f" and "e" segments of LSD.
LCD segment drive for "a," "g," and "d" segments of LSD.
LCD segment drive for "b" and "c" segments of LSD and "low battery."
LCD backplane #3.
LCD backplane #2.
LCD backplane #1.
Sets peak LCD drive signal: V
PEAK
= (V
DD
) –V
DISP
. V
DISP
may also be used to
compensate for temperature variation of LCD crystal threshold voltage.
Internal logic digital ground, the logic "0" level. Nominally 4.7V below V
DD
.
Square-wave output at the backplane frequency, synchronized to BP1. ANNUNC
can be used to control display annunciators. Connecting an LCD segment to
ANNUNC turns it on; connecting it to its backplane turns it off.
Logic mode control input. When connected to V
DD
, the converter is in logic mode.
The LCD displays "OL" and the decimal point inputs control the HIGH and LOW
annunciators. When the "low" annunciator is on, the buzzer will also be on. When
unconnected or connected to DGND, the TC820 is in the voltage/frequency
measurement mode. This pin has a 5
μ
A internal pull-down to DGND.
Dual-purpose input. In range mode, when connected to V
DD
, the integration time
will be 200 counts instead of 2000 counts and the LCD will display the analog input
divided by 10. (See text for limitation withTC820.) In frequency mode, this pin is the
frequency input. A digital signal applied to this pin will be measured with a 1-second
time base. There is an internal 5
μ
A pull-down to DGND.
2
3
4
5
6
7
8
9
41
42
43
44
1
2
3
4
5
6
7
8
9
10
11
AGD4
BC4P3
HFE3
AGD3
BC3P2
OFE2
AGD2
BC2P1
PKFE1
AGD1
BC1BT
BP3
BP2
BP1
V
DISP
10
11
12
13
14
15
—
16
17
12
13
DGND
ANNUNC
18
14
LOGIC
19
15
RANGE/
FREQ
3-3/4 A/D CONVERTER WITH
FREQUENCY COUNTER
AND LOGIC PROBE
TC820
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC820CKW | 3-3/4 Digit A/D Converter with Frequency Counter and Logic Probe |
| TC820CLW | 3-3/4 Digit A/D Converter with Frequency Counter and Logic Probe |
| TC820CPL | 3-3/4 Digit A/D Converter with Frequency Counter and Logic Probe |
| TC820CLW | 3-3/4 DIGIT A/D CONVERTER WITH FREQUENCY COUNTER AND LOGIC PROBE |
| TC820CPL | 3-3/4 DIGIT A/D CONVERTER WITH FREQUENCY COUNTER AND LOGIC PROBE |
相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TC820CKW713 | 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC820CLW | 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC820CLW713 | 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC820CPL | 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| TC8-20S2405R | 制造商:TRUMPOWER 制造商全稱:Tumbler Technologies + TRUMPower 功能描述:DC/DC CONVERTERS 2:1 Input, 12.5 to 20 Watt |
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