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| 型号： | MCP3304T-CI/SL |
| 厂商： | Microchip Technology |
| 文件页数： | 5/48页 |
| 文件大小： | 0K |
| 描述： | IC ADC 13BIT 2.7V 4CH SPI 16SOIC |
| 标准包装： | 2,600 |
| 位数： | 13 |
| 采样率（每秒）： | 100k |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，单极；4 个差分，单极 |
| 其它名称： | MCP3304TCI/SL |
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2011 Microchip Technology Inc.
DS21697F-page 13
MCP3302/04
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
3.1
Analog Inputs (CH0-CH7)
Analog input channels. These pins have an absolute
voltage range of VSS - 0.3V to VDD+ 0.3V. The full scale
differential input range is defined as the absolute value
of (IN+) - (IN-). This difference can not exceed the
value of VREF - 1 LSB or digital code saturation will
occur.
3.2
Digital Ground (DGND)
Ground connection to internal digital circuitry. To
ensure accuracy this pin must be connected to the
same ground as AGND. If an analog ground plane is
available, it is recommended that this device be tied to
the analog ground plane in the circuit. See
“Layout Considerations” for more information
regarding circuit layout.
3.3
Chip Select/Shutdown (CS/SHDN)
The CS/SHDN pin is used to initiate communication
with the device when pulled low. This pin will end a
conversion and put the device in low-power standby
when pulled high. The CS/SHDN pin must be pulled
high between conversions and cannot be tied low for
multiple conversions. See Figure 6-2 for serial
communication protocol.
3.4
Serial Data Input (DIN)
The SPI port serial data input pin is used to clock in
input channel configuration data. Data is latched on the
rising edge of the clock. See Figure 6-2 for serial
communication protocol.
3.5
Serial Data Output (DOUT)
The SPI serial data output pin is used to shift out the
results of the A/D conversion. Data will always change
on the falling edge of each clock as the conversion
takes place. See Figure 6-2 for serial communication
protocol.
3.6
Serial Clock (CLK)
The SPI clock pin is used to initiate a conversion, as
well as to clock out each bit of the conversion as it takes
place. See
for constraints on clock speed, and Figure 6-2 for serial
communication protocol.
TABLE 3-1:
PIN FUNCTION TABLE
MCP3302
MCP3304
Symbol
Description
PDIP, SOIC, TSSOP
PDIP, SOIC
1
CH0
Analog Input
2
CH1
Analog Input
3
CH2
Analog Input
4
CH3
Analog Input
—
5
CH4
Analog Input
—
6
CH5
Analog Input
—
7
CH6
Analog Input
—
8
CH7
Analog Input
7
9
DGND
Digital Ground
810
CS/SHDN
Chip Select / Shutdown Input
911
DIN
Serial Data In
10
12
DOUT
Serial Data Out
11
13
CLK
Serial Clock
12
14
AGND
Analog Ground
13
15
VREF
Reference Voltage Input
14
16
VDD
+4.5V to 5.5V Power Supply
5, 6
—
NC
No Connection
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