MCP4461T-104E/ST Microchip Technology, MCP4461T-104E/ST Datasheet - Page 79

• Manufacturer Part Number: MCP4461T-104E/ST
• Description: IC DGTL POT 257TAPS 100K 20TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP4461T-104E/ST

• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Temperature Coefficient: 150 ppm/°C Typical
• Taps: 257
• Resistance (ohms): 100K
• Number Of Circuits: 4
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Number Of Pots: Quad
• Taps Per Pot: 257
• Resistance: 100 KOhms
• Wiper Memory: Non Volatile
• Buffered Wiper: Buffered
• Digital Interface: I2C
• Operating Supply Voltage: 2.7 V to 5.5 V
• Supply Current: 600 uA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Description/function: Quad I2C Digital POT with Nonvolatile Memory
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 8-10
an application to support the quad and dual options on
the same PCB.
FIGURE 8-10:
Dual Devices.
© 2010 Microchip Technology Inc.
MCP46X2
shows possible layout implementations for
Potentiometers Devices
Rheostat Devices
MCP44X1
MCP46X1
Layout to Support Quad and
MCP44X2
8.6.2.3
In some applications, PCB area is a criteria for device
selection.
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:
8.6.3
Characterization curves of the resistor temperature
coefficient (Tempco) are shown in
Figure
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 R
8.6.4
High Voltage support (V
supports two features. These are:
• In-Circuit Accommodation of split rail applications
• User configuration of the Nonvolatile EEPROM,
14
20
and power supply sync issues
Write Protect, and WiperLock feature
Note:
Note 1: Does not include recommended land
TSSOP
QFN
TSSOP
Type
2-26,
Package
Table 8-2
RESISTOR TEMPCO
HIGH VOLTAGE TOLERANT PINS
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.
pattern dimensions.
Figure
PCB Area Requirements
MCP444X/446X
Code
ML
ST
ST
PACKAGE FOOTPRINT
2-41, and
shows the package dimensions
AB
IHH
Dimensions
5.10
4.00
6.60
resistance.
) on the Serial Interface pins
X
(mm)
Package Footprint
Figure
6.40
4.00
6.40
Y
DS22265A-page 79
2-56.
32.64
16.00
42.24
Figure
(1)
2.04
2.64
2-10,
1