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參數(shù)資料
| 型號(hào)： | TC820CKW |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁(yè)數(shù)： | 26/28頁(yè) |
| 文件大?。?/td> | 616K |
| 代理商： | TC820CKW |
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2002 Microchip Technology Inc.
DS21476B-page 7
TC820
25
21
PKHOLD
Peak hold input. When connected to VDD, the converter will only update the display if a
new conversion value is greater than the preceding value. Thus, the peak reading will be
stored and held indefinitely. When unconnected, or connected to DGND, the converter
will operate normally. This pin has an internal 5
A pull-down to DGND.
—
22
UR
Under range output. This output will be HIGH when the digital reading is 380
counts or less.
—
23
OR
Over range output. This output will be HIGH when the analog signal input is greater
than full scale. The LCD will display "OL" when the input is over ranged.
26
24
VSS
Negative supply connection. Connect to negative terminal of 9V battery.
27
25
COM
Analog circuit ground reference point. Nominally 3.3V below VDD.
28
26
CREF+
Positive connection for reference capacitor.
29
27
CREF-
Negative connection for reference capacitor.
30
28
VREF+
High differential reference input connection.
31
29
VREF-
Low differential reference input connection.
32
30
VIN-
Low analog input signal connection.
33
31
VIN+
High analog input signal connection.
34
32
VBUFF
Buffer output. Connect to integration resistor.
35
33
CAZ
Auto-zero capacitor connection.
36
34
VINT
Integrator output. Connect to integration capacitor.
—35
EOC/
HOLD
Bi-directional pin. Pulses low (i.e., from V
DD to DGND) at the end of each conversion. If
connected to VDD, conversions will continue, but the display is not updated.
37
36
OSC1
Crystal oscillator (input) connection.
38
37
OSC2
Crystal oscillator (output) connection.
39
38
OSC3
RC oscillator connection.
40
39
VDD
LCD segment drive for "a," "g," and "d" segments of MSD.
TABLE 2-1:
PIN FUNCTION TABLE (CONTINUED)
Pin Number
(40-PDIP)
Pin Number
(44-PQFP)
Symbol
Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC820CLW | 1-CH DUAL-SLOPE ADC, PQCC44 |
| TC820CPL | 1-CH DUAL-SLOPE ADC, PDIP40 |
| TC820CLW | DUAL-SLOPE ADC, PARALLEL ACCESS, PQCC44 |
| TC820CPL | DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP40 |
| TC821CKW | CONVERTER SUBSYSTEM ADC, PARALLEL ACCESS, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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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