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參數(shù)資料
| 型號： | MCP4728EV |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 1/33頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL 12BIT 4CH DAC MCP4728 |
| 視頻文件： | MCP4728 Evaluation Board Demo |
| 標(biāo)準(zhǔn)包裝： | 1 |
| DAC 的數(shù)量： | 4 |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | I²C |
| 設(shè)置時間： | 6µs |
| DAC 型： | 電壓 |
| 工作溫度： | -40°C ~ 125°C |
| 已供物品： | 板 |
| 已用 IC / 零件： | MCP4728 |
| 產(chǎn)品目錄頁面： | 673 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | MCP4728T-E/UN-ND - IC DAC 12BIT W/I2C 10-MSOP MCP4728-E/UN-ND - IC DAC 12BIT W/I2C 10-MSOP |
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2010 Microchip Technology Inc.
DS22187E-page 1
MCP4728
Features
12-Bit Voltage Output DAC with Four Buffered
Outputs
On-Board Nonvolatile Memory (EEPROM) for
DAC Codes and I2C Address Bits
Internal or External Voltage Reference Selection
Output Voltage Range:
- Using Internal VREF (2.048V):
0.000V to 2.048V with Gain Setting = 1
0.000V to 4.096V with Gain Setting = 2
- Using External VREF (VDD):
0.000V to VDD
±0.2 Least Significant Bit (LSB) Differential
Nonlinearity (DNL) (typical)
Fast Settling Time: 6 s (typical)
Normal or Power-Down Mode
Low Power Consumption
Single-Supply Operation: 2.7V to 5.5V
I2C Interface:
- Address bits: User Programmable to
EEPROM
- Standard (100 kbps), Fast (400 kbps) and
High Speed (HS) Mode (3.4 Mbps)
10-Lead MSOP Package
Extended Temperature Range: -40°C to +125°C
Applications
Set Point or Offset Adjustment
Sensor Calibration
Closed-Loop Servo Control
Low Power Portable Instrumentation
PC Peripherals
Programmable Voltage and Current Source
Industrial Process Control
Instrumentation
Bias Voltage Adjustment for Power Amplifiers
Description
The MCP4728 device is a quad, 12-bit voltage output
Digital-to-Analog Convertor (DAC) with nonvolatile
memory (EEPROM). Its on-board precision output
amplifier allows it to achieve rail-to-rail analog output
swing.
The DAC input codes, device configuration bits, and
I2C address bits are programmable to the nonvolatile
memory (EEPROM) by using I2C serial interface
commands. The nonvolatile memory feature enables
the DAC device to hold the DAC input codes during
power-off time, allowing the DAC outputs to be
available immediately after power-up with the saved
settings. This feature is very useful when the DAC
device is used as a supporting device for other devices
in the application’s network.
The MCP4728 device has a high precision internal
voltage reference (VREF = 2.048V). The user can select
the internal reference or external reference (VDD) for
each channel individually.
Each channel can be operated in Normal mode or
Power-Down
mode
individually
by
setting
the
configuration register bits. In Power-Down mode, most
of the internal circuits in the powered down channel are
turned off for power savings, and the output amplifier
can be configured to present a known low, medium, or
high resistance output load.
The MCP4728 device includes a Power-on Reset
(POR) circuit to ensure reliable power-up and an
on-board charge pump for the EEPROM programming
voltage.
The MCP4728 has a two-wire I2C compatible serial
interface for standard (100 kHz), fast (400 kHz), or high
speed (3.4 MHz) mode.
The MCP4728 DAC is an ideal device for applications
requiring design simplicity with high precision, and for
applications requiring the DAC device settings to be
saved during power-off time.
The MCP4728 device is available in a 10-lead MSOP
package and operates from a single 2.7V to 5.5V
supply voltage.
12-Bit, Quad Digital-to-Analog Converter with EEPROM Memory
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