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參數(shù)資料
| 型號： | AD688AQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 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% |
| 中文描述： | 2-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 406K |
| 代理商： | AD688AQ |
AD688
REV. A
–3–
ORDERING GUIDE
Temperature
Coefficient
Part
Number
1
Initial
Error
Temperature
Range -
8
C
Package
Option
2
AD688AQ
AD688BQ
AD688SQ
5 mV
2 mV
5 mV
3 ppm/
°
C
3 ppm/
°
C
6 ppm/
°
C
–40 to +85
–40 to +85*
–55 to +125
Q-16
Q-16
Q-16
NOTES
1
For details on grade and package offerings screened in accordance with MIL-STD-883,
refer to the
Analog Devices Military Products Databook
or current AD688/883B data
sheet.
2
Q = Cerdip.
*Temperature coefficient specified from 0 to +70
°
C.
PIN CONFIGURATION
THEORY OF OPERATION
The AD688 consists of a buried Zener diode reference, amplifi-
ers and associated thin-film resistors as shown in the block
diagram of Figure 1. The temperature compensation circuitry
provides the device with a temperature coefficient of 1.5 ppm/
°
C
or less.
Amplifier A1 performs several functions. A1 primarily acts to
amplify the Zener voltage to the required 20 volts. In addition,
A1 also provides for external adjustment of the 20 V output
through Pin 5, the GAIN ADJUST. Using the bias compensa-
tion resistor between the Zener output and the noninverting
input to A1, a capacitor can be added at the NOISE
REDUCTION pin (Pin 7) to form a low pass filter and reduce
the noise contribution of the Zener to the circuit. Two matched
12 k
nominal thin-film resistors (R4 and R5) divide the 20 V
output in half.
Ground sensing for the circuit is provided by Amplifier A2. The
noninverting input (Pin 9) senses the system ground and forces
the midpoint of resistors R4 and R5 to be a virtual ground. Pin
12 (BALANCE ADJUST) can be used for fine adjustment of
this midpoint transfer.
Amplifiers A3 and A4 are internally compensated and are used
to buffer the voltages at Pins 6 and 8 as well as to provide a full
Kelvin output. Thus, the AD688 has a full Kelvin capability by
providing the means to sense a system ground and provide
forced and sensed outputs referenced to that ground.
Figure 1. AD688 Functional Block Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| AD689LQ | Voltage Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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) |
| AD688SQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD688SQ/883B | 制造商:Rochester Electronics LLC 功能描述:IC, MONO +\-10V REFERENCE - Bulk |
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