- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9379 > MCP4451-502E/ML (Microchip Technology)IC POT 5K QUAD 8BIT 20QFN PDF資料下載
參數(shù)資料
| 型號： | MCP4451-502E/ML |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 9/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT 5K QUAD 8BIT 20QFN |
| 標(biāo)準包裝： | 91 |
| 接片： | 257 |
| 電阻（歐姆）： | 5k |
| 電路數(shù)： | 4 |
| 溫度系數(shù)： | 標(biāo)準值 150 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | I²C（設(shè)備位址） |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-QFN 裸露焊盤（4x4） |
| 包裝： | 管件 |
Digital Potentiometer Design Guide
17
Application Circuits and Techniques
Digital potentiometers are a good fit for applications to trim
offset and gain in amplifier circuits. In this following circuit,
a resistor ladder is used to create a voltage window where
Pot1 is used to trim the desired offset for the inverting
amplifier. A second potentiometer (Pot2) is used in a
rheostat mode along with resistor R3 to control the gain of
the amplifier. The step resistance of Pot2 relative to resistor
R3 determines if the gain trimming is a fine adjustment or a
course adjustment. Capacitor C1 is for compensation of the
op amp and to inhibit the output from oscillating.
In this circuit, there is no interaction between the offset
trimming and the gain trimming, but the input signal (VIN) is
loaded by the resistance of R3 plus Pot2’s RBW value.
In the following circuit, a resistor ladder is used to create
a voltage window where Pot1 is used to trim the desired
offset for the non-inverting amplifier. A second potentiometer
is used in a rheostat mode to control the gain of the
amplifier. The step resistance of Pot2 relative to resistor R3
determines if the gain trimming is a fine adjustment or a
course adjustment. Capacitor C1 is for compensation of the
op amp and to inhibit the output from oscillating.
In this circuit, there is an interaction between the offset
trimming and the gain trimming. To minimize this interaction,
Pot2 should be small compared to resistor R3 and Pot1
should be small relative to the sum of R1 and R2. But the
input signal (VIN) is not loaded.
Additional information can be found in application note AN1316.
Inverting Amplifier with Offset and Gain Trimming
Non-Inverting Amplifier with Offset and Gain Trimming
Digital Potentiometer Solutions
In the following circuit, a resistor ladder is used to create a
voltage window where Pot1 is used to trim the desired offset
for the band pass filter. This resistor ladder setting also
works with capacitor C2 to set the high pass filter frequency.
A second potentiometer (Pot2) is used in a rheostat mode
along with R3 and R4 to control the gain of the amplifier.
The step resistance of Pot2 relative to resistors R3 and R4
determines if the gain trimming is a fine adjustment or a
course adjustment. Capacitor C1 along with Pot2, R3 and R4
is used to set the low pass filter.
Capacitor C1 is also used for compensation of the Op Amp
and to inhibit the output from oscillating.
If capacitor C1 is not present, then the circuit is a high pass
filter, while if capacitor C2 is not present then the circuit is a
low pass filter.
The following circuit will the use of an RC filter (Potx and
Cx) will filter at the selected frequency. that frequency is
determined by the rheostat value (RBW) of the Pot and the
capacitor value (Cx). each additional stage of the RC filter is
used to enhance the roll-off characteristics for the filter. The
capacitors Cx should be the same, while the wiper values
of the Pots should be similar. The differences would be to
compensate for the slight variations of the RAB values of
each Pot and the variations of the capacitors.
Band Pass Filter with Offset and Gain Trimming
Programmable Filter
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-BN2-MW-B1 | CONVERTER MOD DC/DC 15V 100W |
| VE-2NZ-MX-F2 | CONVERTER MOD DC/DC 2V 30W |
| VE-BNW-MW-B1 | CONVERTER MOD DC/DC 5.5V 100W |
| AD5161BRMZ50-RL7 | IC DGTL POT 256POS 50K 10MSOP |
| MS3450L20-14S | CONN RCPT 5POS WALL MNT W/SCKT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP4451-503E/ML | 功能描述:數(shù)字電位計 IC 50k I2Cquad Ch Pot 8bit volatile memory RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MCP4451-503E/ST | 功能描述:數(shù)字電位計 IC 50k I2Cquad Ch Pot 8bit volatile memory RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MCP4451T-502E/ST | 制造商:Microchip Technology Inc 功能描述:5K, I2C, QUAD CHANNEL POT, 8-BIT, VOLATILE MEMORY, TSSOP - Tape and Reel |
| MCP4452-103E/ST | 功能描述:數(shù)字電位計 IC 10k I2Cquad Ch Rheo 8bit volatile memory RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MCP4452-104E/ST | 功能描述:數(shù)字電位計 IC 100k I2Cquad Ch Rheo 8bit volatile memory RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。