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參數(shù)資料
| 型號： | AD688 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | High Precision +-10 V Reference |
| 中文描述： | 高精度-10 V參考 |
| 文件頁數(shù)： | 8/8頁 |
| 文件大小： | 406K |
| 代理商： | AD688 |
AD688
REV. A
–8–
C
P
Attempts to drive a large capacitive load (in excess of 1,000 pF)
may result in ringing or oscillation, as shown in the step re-
sponse photo (Figure 14a). This is due to the additional pole
formed by the load capacitance and the output impedance of the
amplifier, which consumes phase margin. The recommended
method of driving capacitive loads of this magnitude is shown in
Figure 14b. The 150
resistor isolates the capacitive load from
the output stage, while the 10 k
resistor provides a dc feedback
path and preserves the output accuracy. The 1
μ
F capacitor
provides a high frequency feedback loop. The performance of
this circuit is shown in Figure 14c.
Figure 14a. Output Amplifier Step Response, C
L
= 1
μ
F
Figure 14b. Compensation for Capacitive Loads
Figure 14c. Output Amplifier Step Response Using Figure
14b Compensation
BRIDGE DRIVER CIRCUIT
The Wheatstone bridge is a common transducer. In its simplest
form, a bridge consists of 4 two-terminal elements connected to
form a quadrilateral, a source of excitation connected along one
of the diagonals and a detector comprising the other diagonal.
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
In this unipolar drive configuration, the output voltage of the
bridge is riding on a common-mode voltage signal equal to
approximately V
IN
/2. Further processing of this signal may
necessarily be limited to high common-mode rejection
techniques such as instrumentation or isolation amplifiers.
However, if the bridge is driven from a pair of bipolar supplies,
then the common-mode voltage is ideally eliminated and the
restrictions on any processing elements that follow are relaxed.
As shown in Figure 15, the AD688 is an excellent choice for the
control element in a bipolar bridge driver scheme. Transistors
Q1 and Q2 serve as series pass elements to boost the current
drive capability to the 57 mA required by the typical 350
bridge. A differential gain stage may still be required if the
bridge balance is not perfect.
Figure 15. Bipolar Bridge Drive
相關(guān)PDF資料 |
PDF描述 |
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| AD688AQ | ECONOLINE: REC2.2-S_DR/H1 - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75% |
| AD688BQ | ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84% |
| AD688SQ | High Precision +-10 V Reference |
| AD689JQ | Quad Precision Op Amp (LT1014) Dual Precision Op Amp (LT1013); Package: PDIP; No of Pins: 14; Temperature Range: 0°C to +70°C |
| AD689KQ | Quad Precision Op Amp (LT1014) Dual Precision Op Amp (LT1013); Package: PDIP; No of Pins: 14; Temperature Range: 0°C to +70°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD688AQ | 功能描述:IC VREF SERIES PREC +-10V 16CDIP RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:3V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:82µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-TSSOP（5 引線），SC-88A，SOT-353 供應(yīng)商設(shè)備封裝:SC-70-5 包裝:帶卷 (TR) 其它名稱:296-20888-2 |
| AD688ARWZ | 功能描述:IC VREF SERIES PREC DUAL 16SOICW RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 基準(zhǔn)類型:旁路，可調(diào)節(jié)，精度 輸出電壓:2.495 V ~ 36 V 容差:±0.5% 溫度系數(shù):標(biāo)準(zhǔn)值 34ppm/°C 輸入電壓:2.495 V ~ 36 V 通道數(shù):1 電流 - 陰極:1mA 電流 - 靜態(tài):- 電流 - 輸出:100mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:TO-243AA 供應(yīng)商設(shè)備封裝:SOT-89-3 包裝:帶卷 (TR) |
| AD688ARWZ | 制造商:Analog Devices 功能描述:IC SERIES V-REF 10V 4mV 16-SOIC |
| AD688BQ | 功能描述:IC VREF SERIES PREC +-10V 16CDIP RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 基準(zhǔn)類型:旁路，可調(diào)節(jié)，精度 輸出電壓:2.495 V ~ 36 V 容差:±0.5% 溫度系數(shù):標(biāo)準(zhǔn)值 34ppm/°C 輸入電壓:2.495 V ~ 36 V 通道數(shù):1 電流 - 陰極:1mA 電流 - 靜態(tài):- 電流 - 輸出:100mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:TO-243AA 供應(yīng)商設(shè)備封裝:SOT-89-3 包裝:帶卷 (TR) |
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