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| 型号： | TMPSNS-RTD1 |
| 厂商： | Microchip Technology |
| 文件页数： | 15/43页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL PT100 RTD TEMP SENSOR |
| 标准包装： | 1 |
| 传感器类型： | 温度 |
| 接口： | USB |
| 嵌入式： | 是，MCU，8 位 |
| 已供物品： | 板，缆线，CD |
| 已用 IC / 零件： | MCP3301，MCP6S26，PIC18F2550 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
| 相关产品： | MCP3301T-BI/SN-ND - IC ADC 13BIT 2.7V 1CH SPI 8-SOIC MCP3301-BI/SN-ND - IC ADC 13BIT 2.7V SPI 8-SOIC MCP3301T-CI/SN-ND - IC ADC 13BIT 2.7V 1CH SPI 8-SOIC MCP3301T-BI/MS-ND - IC ADC 13BIT 2.7V 1CH SPI 8-MSOP MCP3301T-CI/MS-ND - IC ADC 13BIT 2.7V 1CH SPI 8-MSOP MCP3301-BI/P-ND - IC ADC 13BIT 2.7V SPI 8-DIP MCP3301-BI/MS-ND - IC ADC 13BIT 2.7V SPI 8-MSOP MCP3301-CI/SN-ND - IC ADC 13BIT 2.7V 1CH SPI 8SOIC MCP3301-CI/P-ND - IC ADC 13BIT 2.7V 1CH SPI 8-DIP MCP3301-CI/MS-ND - IC ADC 13BIT 2.7V 1CH SPI 8-MSOP |
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MCP6S21/2/6/8
3.0
PIN DESCRIPTIONS
TABLE 3-1:
PIN FUNCTION TABLE
MCP6S21
1
2
—
—
—
—
—
—
—
3
4
5
6
—
7
8
MCP6S22
1
2
3
—
—
—
—
—
—
—
4
5
6
—
7
8
MCP6S26
1
2
3
4
5
6
7
—
—
8
9
10
11
12
13
14
MCP6S28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
V OUT
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
V REF
V S S
CS
SI
SO
SCK
V DD
Description
Analog Output
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
External Reference Pin
Negative Power Supply
SPI Chip Select
SPI Serial Data Input
SPI Serial Data Output
SPI Clock Input
Positive Power Supply
3.1
Analog Output
3.4
Power Supply (V SS and V DD )
The output pin (V OUT ) is a low-impedance voltage
source. The selected gain (G), selected input (CH0-
CH7) and voltage at V REF determine its value.
3.2 Analog Inputs (CH0 thru CH7)
The inputs CH0 through CH7 connect to the signal
sources. They are high-impedance CMOS inputs with
low bias currents. The internal MUX selects which one
is amplified to the output.
The positive power supply pin (V DD ) is 2.5V to 5.5V
higher than the negative power supply pin (V SS ). For
normal operation, the other pins are between V SS and
V DD .
Typically, these parts are used in a single (positive)
supply configuration. In this case, V SS is connected to
ground and V DD is connected to the supply. V DD will
need a local bypass capacitor (0.1 μF) at the V DD pin.
It can share a bulk capacitor with nearby analog parts
(typically 2.2 μF to 10 μF within 4 inches (100 mm) of
3.3
External Reference Voltage (V REF )
the V DD pin.
The V REF pin should be at a voltage between V SS and
V DD (the MCP6S22 has V REF tied internally to V SS ).
The voltage at this pin shifts the output voltage.
3.5 Digital Inputs
The SPI interface inputs are: Chip Select (CS), Serial
Input (SI) and Serial Clock (SCK). These are Schmitt-
triggered, CMOS logic inputs.
3.6
Digital Output
The MCP6S26 and MCP6S28 devices have a SPI
interface serial output (SO) pin. This is a CMOS push-
pull output and does not ever go High-Z. Once the
device is deselected (CS goes high), SO is forced low.
This feature supports daisy chaining, as explained in
? 2003 Microchip Technology Inc.
DS21117A-page 15
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