参数资料
型号: MCP4461T-103E/ML
厂商: Microchip Technology
文件页数: 78/100页
文件大小: 0K
描述: IC DGTL POT 257TAPS 10K 20QFN
标准包装: 3,300
接片: 257
电阻(欧姆): 10k
电路数: 4
温度系数: 标准值 150 ppm/°C
存储器类型: 非易失
接口: I²C(设备位址)
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
供应商设备封装: 20-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
2010 Microchip Technology Inc.
DS22265A-page 79
MCP444X/446X
Figure 8-10 shows possible layout implementations for
an application to support the quad and dual options on
the same PCB.
FIGURE 8-10:
Layout to Support Quad and
Dual Devices.
8.6.2.3
PCB Area Requirements
In some applications, PCB area is a criteria for device
selection. Table 8-2 shows the package dimensions
and area for the different package options. The table
also shows the relative area factor compared to the
smallest area. For space critical applications, the QFN
package would be the suggested package.
TABLE 8-2:
PACKAGE FOOTPRINT (1)
8.6.3
RESISTOR TEMPCO
Characterization curves of the resistor temperature
coefficient (Tempco) are shown in Figure 2-10,
These curves show that the resistor network is
designed to correct for the change in resistance as
temperature increases. This technique reduces the
end to end change is RAB resistance.
8.6.4
HIGH VOLTAGE TOLERANT PINS
High Voltage support (VIHH) on the Serial Interface pins
supports two features. These are:
In-Circuit Accommodation of split rail applications
and power supply sync issues
User configuration of the Nonvolatile EEPROM,
Write Protect, and WiperLock feature
Potentiometers Devices
Rheostat Devices
MCP44X1
MCP46X1
MCP44X2
MCP46X2
Package
Package Footprint
Pin
s
Type
Code
Dimensions
(mm)
Are
a
(m
m
2
)
Re
la
tiv
e
Are
a
XY
14 TSSOP
ST
5.10
6.40 32.64 2.04
20
QFN
ML
4.00
4.00 16.00
1
TSSOP
ST
6.60
6.40 42.24 2.64
Note 1:
Does not include recommended land
pattern dimensions.
Note:
In many applications, the High Voltage will
only be present at the manufacturing
stage so as to “lock” the Nonvolatile wiper
value (after calibration) and the contents
of the EEPROM. This ensures that since
High Voltage is not present under normal
operating conditions, these values can not
be modified.
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