- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9388 > MCP795W22T-I/SL (Microchip Technology)IC RTCC 2KB EE WD/EVENT 14SOIC PDF資料下載
參數(shù)資料
| 型號(hào)： | MCP795W22T-I/SL |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 6/13頁 |
| 文件大小： | 0K |
| 描述： | IC RTCC 2KB EE WD/EVENT 14SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,600 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)，EEPROM，閏年，方波輸出，SRAM，唯一 ID，看門狗定時(shí)器 |
| 存儲(chǔ)容量： | 64B |
| 時(shí)間格式： | HH:MM:SS:hh（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-SOIC |
| 包裝： | 帶卷 (TR) |
2010 Microchip Technology Inc.
DS22250A-page 29
MCP4902/4912/4922
6.4.1.2
Building a “Window” DAC
When calibrating a set point or threshold of a sensor,
typically only a small portion of the DAC output range is
utilized. If the LSb size is adequate enough to meet the
application’s accuracy needs, the unused range is
sacrificed without consequences. If greater accuracy is
needed, then the output range will need to be reduced
to increase the resolution around the desired threshold.
If the threshold is not near VREF or VSS, then creating
a “window” around the threshold has several
advantages. One simple method to create this
“window” is to use a voltage divider network with a
pull-up and pull-down resistor. Example 6-2 and
Example 6-4 illustrate this concept.
EXAMPLE 6-2:
SINGLE-SUPPLY “WINDOW” DAC
VREF
VDD
SPI
3
Vtrip
R1
R2
0.1 F
Comparator
R3
VCC-
VCC+
VCC-
VOUT
R23
R2R3
R2 R3
+
------------------
=
V23
VCC+R2
VCC-R3
+
R2 R3
+
-----------------------------------------------------
=
Vtrip
VOUTR23 V23R1
+
R2 R23
+
--------------------------------------------
=
R1
R23
V23
VOUT
VO
Thevenin
Equivalent
Rsense
G = Gain selection (1x or 2x)
Dn = Digital value of DAC (0-255) for MCP4901/MCP4902
VOUT
VREF G
Dn
2
N
------
=
= Digital value of DAC (0-1023) for MCP4911/MCP4912
= Digital value of DAC (0-4095) for MCP4921/MCP4922
N = DAC Bit Resolution
DAC
MCP4901
MCP4911
MCP4921
(a) Single Output DAC:
(b) Dual Output DAC:
MCP4902
MCP4912
MCP4922
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCP795W21T-I/SL | IC RTCC 2KB EE WD/EVENT 14SOIC |
| MCP4651-502E/ST | IC DGTL POT 5K 256TAPS 14-TSSOP |
| VE-J0J-MZ | CONVERTER MOD DC/DC 36V 25W |
| VE-JTM-MZ | CONVERTER MOD DC/DC 10V 25W |
| MCP795W20T-I/ST | IC RTCC 2KB EE WD/EVENT 14TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP795W2X | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:3V SPI Real-Time Clock Calendar with Enhanced Features and Battery Switchover |
| MCP795WXX | 制造商:MAS 制造商全稱:MAS 功能描述:SPI Real-Time Clock Calendar |
| MCP7M | 制造商:Preh Elec. 功能描述: |
| MCP8024-H/MP | 制造商:Microchip Technology Inc 功能描述:IC PR-DRIVER BLDC 3PH 40QFN 制造商:Microchip Technology Inc 功能描述:MOTOR DRIVER, 3P DC BRUSHLESS, QFN-40 |
| MCP8024-H/PT | 制造商:Microchip Technology Inc 功能描述:IC PR-DRIVER BLDC 3PH 48TQFP 制造商:Microchip Technology Inc 功能描述:MOTOR DRIVER, 3P DC BRUSHLESS, TQFP-48 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。