AD688SQ

更新时间： 2024-01-21 07:04:57

品牌	Logo	应用领域
亚德诺 - ADI		电源电路参考电压源输出元件
页数	文件大小	规格书
8页	408K
描述
High Precision +-10 V Reference

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AD688SQ 技术参数

生命周期：	Active	零件包装代码：	DIP
包装说明：	DIP,	针数：	16
Reach Compliance Code：	unknown	风险等级：	5.76
Is Samacsys：	N	其他特性：	-10V OUTPUT ALSO AVAILABLE, -13.5V TO -18V SUPPLY IS ALSO REQUIRED
模拟集成电路 - 其他类型：	THREE TERMINAL VOLTAGE REFERENCE	JESD-30 代码：	R-GDIP-T16
长度：	19.05 mm	功能数量：	1
输出次数：	2	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-55 °C
最大输出电压：	10.005 V	最小输出电压：	9.995 V
标称输出电压：	10 V	封装主体材料：	CERAMIC, GLASS-SEALED
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	认证状态：	COMMERCIAL
座面最大高度：	5.08 mm	最大供电电压 (Vsup)：	18 V
最小供电电压 (Vsup)：	13.5 V	标称供电电压 (Vsup)：	15 V
表面贴装：	NO	最大电压温度系数：	6 ppm/ °C
温度等级：	MILITARY	端子面层：	NOT SPECIFIED
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	微调/可调输出：	NO
宽度：	7.62 mm	Base Number Matches：	1

AD688SQ 数据手册

AD688

If further noise reduction is desired, an optional capacitor may

be added between the NOISE REDUCTION pin and ground as

shown in Figure 2b. This will form a low pass filter with the

5 kΩ R_Bon the output of the Zener cell. A 1 µF capacitor will

have a 3 dB point at 32 Hz and will reduce the high frequency

noise (to 1 MHz) to about 250 µV p-p. Figure 4 shows the 1 MHz

noise of a typical AD688 both with and without a 1µF capacitor.

When the NOISE REDUCTION feature is used, a 20 kΩ

resistor between Pins 6 and 2 is required for proper startup.

Figure 6. Turn-On With 1 µF C_N

TEMPERATURE PERFORMANCE

The AD688 is designed for precision reference applications

where temperature performance is critical. Extensive tempera-

ture testing ensures that the device’s high level of performance is

maintained over the operating temperature range.

Figure 4. Effect of 1 µF Noise Reduction Capacitor on

Broadband Noise

Figure 7 shows the typical output voltage drift for the

AD688SQ and illustrates the test methodology. The box in Fig-

ure 7 is bounded on the sides by the operating temperature

extremes and on top and bottom by the maximum and

minimum +10 V output error voltages measured over the

operating temperature range. The slopes of the diagonals drawn

for both the +10 V and –10 V outputs determine the perform-

ance grade of the device.

TURN-ON TIME

Upon application of power (cold start), the time required for the

output voltage to reach its final value within a specified error is

the turn-on settling time. Two components normally associated

with this are: time for active circuits to settle and time for ther-

mal gradients on the chip to stabilize. Figure 5 shows the turn-

on characteristics of the AD688. It shows the settling time to be

about 600 µs. Note the absence of any thermal tails when the

horizontal scale is expanded to 2 ms/cm in Figure 5b.

a. Electrical Turn-On

Figure 7. Typical AD688SQ Temperature Drift

Each AD688A and B grade unit is tested at –40°C, –25°C, 0°C,

+25°C, +50°C, +70°C and +85°C. Each AD688S grade unit is

tested at –55°C, –25°C, +25°C, +70°C and +125°C. This

approach ensures that the variations of output voltage that occur

as the temperature changes within the specified range will be

contained within a box whose diagonal has a slope equal to the

maximum specified drift. The position of the box on the vertical

scale will change from device to device as initial error and the

shape of the curve vary. Maximum height of the box for the

appropriate temperature range is shown in Figure 8.

b. Extended Time Scale

Figure 5. Turn-On Characteristics

Output turn-on time is modified when an external noise reduc-

tion capacitor is used. When present, this capacitor presents an

additional load to the internal Zener diode’s current source,

resulting in a somewhat longer turn-on time. In the case of a

1 µF capacitor, the initial turn-on time is approximately 100 ms

(see Figure 6).

Figure 8. Maximum +10 V or –10 V Output Change

REV. A

–5–

1 2 3 456 7 8

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与AD688SQ相关器件

型号	品牌	描述	获取价格	数据表
AD689JCHIPS	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, UUC7, 0.081 X 0.060 INCH, DIE-7, Voltag	获取价格
AD689JQ	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, CDIP8, CERDIP-8, Voltage Reference	获取价格
AD689KQ	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, CDIP8, CERDIP-8, Voltage Reference	获取价格
AD689LQ	ETC	Voltage Reference	获取价格
AD689SQ	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, CDIP8, CERDIP-8, Voltage Reference	获取价格
AD689SQ/883B	ETC	Voltage Reference	获取价格

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