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| 型號： | MCP4451-503E/ST |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 20/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT 50K QUAD 8BIT 20TSSOP |
| 標(biāo)準(zhǔn)包裝： | 74 |
| 接片： | 257 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 4 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 150 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | I²C（設(shè)備位址） |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
Digital Potentiometer Design Guide
7
Digital Potentiometer Solutions
Serial Interfaces
Microchip currently offers devices with one of the following
three serial interfaces:
■ An Up/Down interface
■ An SPI interface
■ An I2C interface
Increment
Decrement
Up/Down Interface
This is an easy to implement interface that requires two pins
and can be implemented with minimal software overhead.
This interface is also easy for test systems when using
the non-volatile devices as replacements for mechanical
potentiometers.
High voltage commands require the CS pin forced to the
VIHH voltage, instead of the VIL voltage. In this state, the
WiperLock Technology bit can be enabled and disabled.
Devices with Up/Down Interface
Device
Serial
Interface
V
olatile
(V
ol)
Non-V
olatile
(NV)
#
RS
Resistor
s
Rs
Ω
(typ.)
Zero-Scale/
Full-Scale
(3)
#
of
Channels
WiperLock
Technolog
y
HV
Commands
Shutdown
Mode
Configuration
V
oltage
Range
#
of
Pins
P
ackages
IDD
max
(μA)
(5)
MCP4011(1)
U/D
Vol
63
33.3/79.4/158.7/793.7
Y/Y
1
N
Y(9)
N
Pot
1.8V to 5.5V(6)
8
DFN 2x3
1
MCP4012(1)
U/D
Vol
63
33.3/79.4/158.7/793.7
Y/Y
1
N
Y(9)
N
Rheo
1.8V to 5.5V(6)
6
SOT
1
MCP4013(1)
U/D
Vol
63
33.3/79.4/158.7/793.7
Y/Y
1
N
Y(9)
N
Pot(7)
1.8V to 5.5V(6)
6
SOT
1
MCP4014(1)
U/D
Vol
63
33.3/79.4/158.7/793.7
Y/Y
1
Y(9)
N
Rheo(7)
1.8V to 5.5V(6)
5
SOT
1
MCP4021(1)
U/D
NV
63
33.3/79.4/158.7/793.7
Y/Y
1
Y
N
Pot
2.7V to 5.5V
8
SC70
1
MCP4022(1)
U/D
NV
63
33.3/79.4/158.7/793.7
Y/Y
1
Y
N
Rheo
2.7V to 5.5V
6
SC70
1
MCP4023(1)
U/D
NV
63
33.3/79.4/158.7/793.7
Y/Y
1
Y
N
Pot(7)
2.7V to 5.5V
6
SC70
1
MCP4024(1)
U/D
NV
63
33.3/79.4/158.7/793.7
Y/Y
1
Y
N
Rheo(7)
2.7V to 5.5V
5
SC70
1
1. Resistor options are: -202 (2.1 kΩ), -502 (5.0 kΩ), -103 (10.0 kΩ), and -503 (50.0 kΩ).
2. Resistor options are: -502 (5.0 kΩ), -103 (10.0 kΩ), 503 (50.0 kΩ), and -104 (100.0 kΩ).
3. Zero-scale allows the wiper to “directly” connect to Terminal B, while full-scale allows the wiper to “directly” connect to Terminal A.
4. There is one RS resistor between the maximum wiper value and Terminal A.
5. This current is with the serial interface inactive, and not during an EEPROM write cycle (for non-volatile devices).
6. The serial interface has been tested to 1.8V, the device’s analog characteristics (resistor) have been tested from 2.7V to 5.5V. Review the device’s characterization graphs for information on analog performance between
1.8Vand 2.7V.
7. One of the terminal pins (A or B) is internally connected to ground, due to the limitation of the number of pins on the package.
8. Shutdown support via software (TCON register(s)). If device has SHDN pin, software shutdown also fuctions.
9. High voltage command support is for compatibility with the corresponding non-volatile version of the device.
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