參數資料
型號： MCP4462T-502E/ST
廠商： Microchip Technology
文件頁數： 78/100頁
文件大?。?/td> 0K
描述： IC DGTL POT 257TAPS 5K 14TSSOP
標準包裝： 2,500
接片： 257
電阻（歐姆）： 5k
電路數： 4
溫度系數： 標準值 150 ppm/°C
存儲器類型： 非易失
接口： I²C（設備位址）
電源電壓： 2.7 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應商設備封裝： 14-TSSOP
包裝： 帶卷 (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 “l(fā)ock” 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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