參數(shù)資料
型號： MCP4725EV
廠商： Microchip Technology
文件頁數(shù)： 1/50頁
文件大?。?/td> 0K
描述： BOARD EVAL FOR MCP4725
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 1
位數(shù)： 12
采樣率（每秒）： 100k ~ 3.4M
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： 2 板，CD
已用 IC / 零件： MCP4725
產(chǎn)品目錄頁面： 673 (CN2011-ZH PDF)
2009 Microchip Technology Inc.
DS22039D-page 1
MCP4725
Features
12-Bit Resolution
On-Board Non-Volatile Memory (EEPROM)
±0.2 LSB DNL (typical)
External A0 Address Pin
Normal or Power-Down Mode
Fast Settling Time: 6 s (typical)
External Voltage Reference (VDD)
Rail-to-Rail Output
Low Power Consumption
Single-Supply Operation: 2.7V to 5.5V
I2CTM Interface:
- Eight Available Addresses
- Standard (100 kbps), Fast (400 kbps), and
High-Speed (3.4 Mbps) Modes
Small 6-lead SOT-23 Package
Extended Temperature Range: -40°C to +125°C
Applications
Set Point or Offset Trimming
Sensor Calibration
Closed-Loop Servo Control
Low Power Portable Instrumentation
PC Peripherals
Data Acquisition Systems
Block Diagram
DESCRIPTION
The MCP4725 is a low-power, high accuracy, single
channel, 12-bit buffered voltage output Digital-to-
Analog Convertor (DAC) with non-volatile memory
(EEPROM). Its on-board precision output amplifier
allows it to achieve rail-to-rail analog output swing.
The DAC input and configuration data can be
programmed to the non-volatile memory (EEPROM) by
the user using I2C interface command. The non-volatile
memory feature enables the DAC device to hold the
DAC input code during power-off time, and the DAC
output is available immediately after power-up. This
feature is very useful when the DAC device is used as
a supporting device for other devices in the network.
The 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
DAC reference is driven from VDD directly. In power-
down mode, the output amplifier can be configured to
present a known low, medium, or high resistance
output load.
The MCP4725 has an external A0 address bit selection
pin. This A0 pin can be tied to VDD or VSS of the user’s
application board.
The MCP4725 has a two-wire I2C compatible serial
interface for standard (100 kHz), fast (400 kHz), or high
speed (3.4 MHz) mode.
The MCP4725 is an ideal DAC device where design
simplicity and small footprint is desired, and for
applications requiring the DAC device settings to be
saved during power-off time.
The device is available in a small 6-pin SOT-23
package.
Package Type
Resistive
Power-on
Reset
Charge
Pump
EEPROM
I2C Interface Logic
Input
Register
DAC Register
Op
Amp
P
o
wer-down Control
VDD
VSS
SCL
SDA
VOUT
A0
String DAC
3
VDD
SCL
SDA
VSS
A0
SOT-23-6
VOUT
2
1
4
5
6
MCP4725
12-Bit Digital-to-Analog Converter with EEPROM Memory
in SOT-23-6
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