- 您现在的位置：买卖IC网 > PDF目录8856 > MCP4706A2T-E/MAY (Microchip Technology)IC DAC 8BIT NV EEP I2C 6DFN PDF资料下载
参数资料
| 型号： | MCP4706A2T-E/MAY |
| 厂商： | Microchip Technology |
| 文件页数： | 62/86页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT NV EEP I2C 6DFN |
| 标准包装： | 3,000 |
| 设置时间： | 6µs |
| 位数： | 8 |
| 数据接口： | EEPROM，I²C，串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 1.1W |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-VDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN（2x2） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电压，单极 |
| 采样率（每秒）： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页当前第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页
2011-2012 Microchip Technology Inc.
DS22272C-page 65
MCP4706/4716/4726
8.3
Application Examples
The MCP47X6 devices are rail-to-rail output DACs
designed to operate with a VDD range of 2.7V to 5.5V.
The internal output op amplifier is robust enough to
drive
common,
small-signal
loads
directly,
thus
eliminating the cost and size of external buffers for
most applications. The user can use gain of 1 or 2 of
the output op amplifier by setting the Configuration
register bits. Also, the user can use internal VDD as the
reference or use external reference. Various user
options and easy-to-use features make the devices
suitable for various modern DAC applications.
Application examples include:
8.3.1
DC SET POINT OR CALIBRATION
A
common
application
for
the
devices
is
a
digitally-controlled set point and/or calibration of
variable parameters, such as sensor offset or slope.
For example, the MCP4726 provides 4096 output
steps. If voltage reference is 4.096V, the LSb size is
1 mV. If a smaller output step size is desired, a lower
external voltage reference is needed.
8.3.1.1
Decreasing Output Step Size
If the application is calibrating the bias voltage of a
diode or transistor, a bias voltage range of 0.8V may be
desired with about 200 V resolution per step. Two
common methods to achieve small step size are using
lower VREF pin voltage or using a voltage divider on the
DAC’s output.
Using an external voltage reference (VREF) is an
option, if the external reference is available with the
desired output voltage range. However, occasionally,
when using a low-voltage reference voltage, the noise
floor causes a SNR error that is intolerable. Using a
voltage divider method is another option, and provides
some advantages when external voltage reference
needs to be very low, or when the desired output
voltage is not available. In this case, a larger value
reference voltage is used, while two resistors scale the
output range down to the precise desired level.
Figure 8-3 illustrates this concept. A bypass capacitor
on the output of the voltage divider plays a critical
function in attenuating the output noise of the DAC and
the induced noise from the environment.
FIGURE 8-3:
Example Circuit Of Set Point
or Threshold Calibration.
EQUATION 8-1:
VOUT AND VTRIP
CALCULATIONS
R1
VCC+
VCC–
VOUT
I2C
2-wire
VREF
Optional
MCP47X6
VDD
VO
R2
C1
RSENSE
Comp.
VDD
VTRIP
V
trip
V
OUT
R
2
R
1
R
2
+
--------------------
=
VOUT = VREF G
DAC Register Value
2N
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B3N-MY-F3 | CONVERTER MOD DC/DC 18.5V 50W |
| MCP4706A1T-E/MAY | IC DAC 8BIT NV EEP I2C 6DFN |
| VE-B3M-MY-F1 | CONVERTER MOD DC/DC 10V 50W |
| MS3108E36-8S | CONN PLUG 47POS RT ANG W/SCKT |
| 74LVX3245MTC | IC TRANSCVR TRI-ST 8BIT 24TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP4706A3T-E/CH | 功能描述:数模转换器- DAC Sngl 8B NV DAC w/Ext Vref & I2C interface RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MCP4706A3T-E/MAY | 功能描述:数模转换器- DAC Sngl 8B NV DAC w/Ext Vref & I2C interface RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MCP471610M02041 | 制造商:Distributed By MCM 功能描述:Microsoft™ Xbox 360™ Replacement Black Game Controller 制造商:MCM 功能描述:MICROSOFT XBOX 360 CONTROLLER BLACK WIRED |
| MCP4716A0T-E/CH | 功能描述:数模转换器- DAC Sngl 10B NV DAC w/Ex Vref & I2C interface RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MCP4716A0T-E/MAY | 功能描述:数模转换器- DAC Sngl 10B NV DAC w/Ex Vref & I2C interface RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。