參數(shù)資料
型號(hào): MCP3421DM-BFG
廠商: Microchip Technology
文件頁數(shù): 21/42頁
文件大?。?/td> 0K
描述: BOARD DEMO FOR MCP3421
產(chǎn)品培訓(xùn)模塊: MCP3901 Analog Front End
標(biāo)準(zhǔn)包裝: 1
主要目的: 電源管理,電池檢測計(jì)
已用 IC / 零件: MCP3421
已供物品:
MCP3421
DS22003E-page 28
2009 Microchip Technology Inc.
6.1.3
DEVICE COMMUNICATION TEST
The user can test the communication between the
Master (MCU) and the MCP3421 by simply checking
an acknowledge response from the MCP3421 after
sending a read or write command. Here is an example
a)
Set the R/W bit “LOW” in the address byte.
b)
Check the ACK pulse after sending the
address byte.
If the device acknowledges (ACK = 0), then the
device
is
connected,
otherwise
it
is
not
connected.
c)
Send a STOP bit.
FIGURE 6-3:
I2C Bus Communications
Test.
6.1.4
DIFFERENTIAL AND SINGLE-
ENDED CONFIGURATION
Figure 6-4 shows typical connection examples for
differential and single-ended inputs. Differential input
signals are connected to the VIN+ and VIN- input pins.
For the single-ended input, the input signal is applied to
one of the input pins (typically connected to the VIN+
pin) while the other input pin (typically VIN- pin) is
grounded. All device characteristics hold for the single-
ended configuration, but this configuration loses one bit
resolution because the input can only stand in
positive half scale. Refer to
FIGURE 6-4:
Differential and Single-
Ended Input Connections.
1
2
34
5
6
78
9
SCL
SDA
11
0
1A2 A1 A0 0
Start
Bit
Address Byte
Address bits
ADC Section
R/W
Stop
Bit
AC
K
Response
Device Code
MCP3421
(a) Differential Input Signal Connection:
Input Signal
(b) Single-ended Input Signal Connection:
Input Signal
Sensor
Excitation
R1
R2
VIN+
VIN-
VDD
VIN+
VIN-
VDD
C1
C2
C1
C2
C1 : 0.1 F, Ceramic Capacitor
C2 : 10 F, Tantalum Capacitor
MCP3421
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP3421DM-BFG 制造商:Microchip Technology Inc 功能描述:A/D CONVERTER EVAL. BOARD; Silicon Manufacturer:Microchip; Silicon Core Number:MCP3421; Kit Application Type:Power Management; Kit Contents:Board, Battery; Features:Measure the Battery Voltage and Display the Result on LCD ;RoHS Compliant: No
MCP3421DM-WS 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 WT SCALE DEMO BRD 18 I/O 10-BIT ADC 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
MCP3421E64A0-E/SN 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 18-B delta-sigma ADC Sngl Ch 64kb EEPROM RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MCP3421EV 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MCP3421 SOT23-6 Eval Board 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
MCP3422 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:18-Bit, Multi-Channel ???£ Analog-to-Digital Converter with I2Ca?¢ Interface and On-Board Reference