參數(shù)資料
型號(hào): MCP4725A2T-E/CH
廠商: Microchip Technology
文件頁(yè)數(shù): 32/50頁(yè)
文件大小: 0K
描述: IC DAC 12BIT EE W/I2C SOT23-6
標(biāo)準(zhǔn)包裝: 1
設(shè)置時(shí)間: 6µs
位數(shù): 12
數(shù)據(jù)接口: EEPROM,I²C,串行
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-6
供應(yīng)商設(shè)備封裝: SOT-23-6
包裝: 標(biāo)準(zhǔn)包裝
輸出數(shù)目和類型: 1 電壓,單極;1 電壓,雙極
采樣率(每秒): *
產(chǎn)品目錄頁(yè)面: 673 (CN2011-ZH PDF)
配用: MCP4725DM-PTPLS-ND - BOARD DAUGHTER PICTAIL MCP4725
其它名稱: MCP4725A2T-E/CHDKR
MCP4725
DS22039D-page 38
2009 Microchip Technology Inc.
8.5.4.1
Design a Bipolar DAC using
Some applications desires an output step magnitude of
1 mV with an output range of ±2.05V. The following
steps explain the design solution:
1.
Calculate the range: +2.05V – (-2.05V) = 4.1V.
2.
Calculate the resolution needed:
4.1V/1 mV = 4100 steps
Note that 212 = 4096 for 12-bit resolution.
3.
The amplifier gain (R2/R1), multiplied by VDD,
must be equal to the desired minimum output to
achieve bipolar operation. Since any gain can
be realized by choosing resistor values (R1+R2),
the VDD value must be selected first. If a VDD of
4.1V is used, solve for the amplifier’s gain by
setting the DAC code to 0, knowing that the out-
put needs to be -2.05V. The equation can be
simplified to
:
4.
Next, solve for R3 and R4 by setting the DAC to
4096, knowing that the output needs to be
+2.05V.
R
2
R
1
---------
2.05
V
DD
-------------
2.05
4.1
-------------
=
R
2
R
1
------
1
2
---
=
If R1 = 20 k and R2 = 10 k, the gain will be 0.5.
R
4
R
3
R
4
+
()
------------------------
2.05V
0.5 V
DD
()
+
1.5 V
DD
-------------------------------------------------
2
3
---
==
If R4 = 20 k, then R3 = 10 k
相關(guān)PDF資料
PDF描述
IDT23S09E-1HPGG8 IC CLK BUFFER ZD HI DRV 16-TSSOP
VI-BTH-MY-F3 CONVERTER MOD DC/DC 52V 50W
MCP4725A1T-E/CH IC DAC 12BIT EE W/I2C SOT23-6
M83723/95A1404N CONN PLUG 4POS STRAIGHT W/SCKT
VI-BTH-MY-F1 CONVERTER MOD DC/DC 52V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP4725A3T-E/CH 功能描述:數(shù)模轉(zhuǎn)換器- DAC Sngl 12-B NV DAC w/ I2C interface RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
MCP4725A3T-E/CH-CUT TAPE 制造商:Microchip 功能描述:MCP4725 Series 1 Ch I2C EEPROM Memory 5.5 V 12-Bit D/A Converter SMT - SOT-23-6
MCP4725DM-PTPLS 功能描述:子卡和OEM板 MCP4725 DAC PICTail Plus Daughter Board RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MCP4725EV 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MCP4725 Eval Brd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
MCP4725T-E/CH 功能描述:數(shù)模轉(zhuǎn)換器- DAC SNGL 12B NV DAC with I2C interface RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube