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參數(shù)資料
| 型號： | X9C503 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | EEPOT Nonvolatile Digital Potentiometer(100個抽頭,-5V~+5V,50K總電阻,非易失性數(shù)字電位器) |
| 中文描述： | EEPOT非易失數(shù)字電位器（100個抽頭，- 5V的?5V的，50K的總電阻，非易失性數(shù)字電位器） |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 87K |
| 代理商： | X9C503 |
Xicor Application Note
AN120-6
AN120
This action combines with A2 to establish a feedback loop,
which tends to drive the follower pair to the desired zero-
signal bias. This action occurs because, if the follower bias
current IQ is less than 50 mA, then the drop across R3 will
be less than the drop across R4. As a result, A2 drives the
Up/Down input of P1 high (Up). Therefore, on the next
negative transition of the clock, the VW terminal of P1 will
make one step toward the VH terminal. This increases the
drive to C1, which ups the follower bias.
If IQ is more than 50 mA, then A2’s output state will reverse,
causing P1 to step VW toward VL and decrease the
follower quiescent bias. Consequently, after a maximum of
5 seconds and 99 multivibrator cycles, the follower bias
will have been forced to converge to the bias level set by
the R4/R3 ratio. ADJ then may be reset to zero for normal
amplifier operation; the final bias setting will be retained by
P1 until either power is removed or a new ADJ cycle
initiated. Thermal coupling between D1/Q1 and D2/Q2
improves overall bias stability between adjustment cycles.
Although illustrated with ±15-V supplies, the unique “Over-
The-Top” input topology of A2 is compatible with V+ voltages
as high as 36 V (but be careful to observe A1 limitations).
Also, there is no requirement that the V+ and V- voltages
be symmetrical. Many variations are possible when
selecting A1 and the follower MOSFETs to achieve
different combination of output capabilities.
Proportional-Integral Thermostat
A classic scheme for precision temperature control is the
proportional-integral or “P/I” algorithm. In this method, the
heater control equation consists of two terms. One term
(“P”) is proportional to the instantaneous error differential
between sensor and setpoint temperatures. The other (“I”)
is proportional to the time integral of the error. P/I
controllers characteristically have reasonably good
dynamic response due to the proportional feedback term,
nominally zero steady-state error thanks to the error
integration term, and relatively simple loop optimization
Figure 5. This high-output-current, high-frequency buffer amplifier uses an automatic bias adjustment
loop, utilizing a Xicor digital potentiometer P1, to minimize harmonic distortion while drawing a thrifty
no-signal supply current of only 50 mA.
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| X9C503P | 功能描述:IC DIGITAL POT 50K 100TP 8DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9C503PI | 功能描述:IC DIGITAL POT 50K 100TP 8DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9C503PIZ | 功能描述:IC XDCP 100-TAP 50K EE 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:256 電阻（歐姆）:100k 電路數(shù):2 溫度系數(shù):標(biāo)準(zhǔn)值 35 ppm/°C 存儲器類型:易失 接口:6 線串行（芯片選擇，遞增，增/減） 電源電壓:2.6 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
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