AD9768SD

更新时间： 2024-09-24 22:50:03

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
4页	106K
描述
Ultrahigh Speed IC D/A Converter

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AD9768SD 数据手册

Ultrahigh Speed IC

D/A Converter

AD9768

FEATURES

FUNCTIO NAL BLO CK D IAGRAM

5 ns Settling Tim e

100 MSPS Update Rate

20 m A Output Current

ECL-Com patible

40 MHz Multiplying Mode

APPLICATIONS

Raster Scan & Vector Graphic Displays

High Speed Waveform Generation

Digital VCOs

Ultrafast Digital Attenuators

GENERAL D ESCRIP TIO N

T he Analog Devices AD9768SD D/A converter is a monolithic

current-output converter which can accept 8 bits of ECL-level

digital input voltages and convert them into analog signals at

update rates as high as 100 MSPS. In addition to its use as a

standard D/A converter, it can also be utilized as a two-quadrant

multiplying D/A at multiplying bandwidths as high as 40 MHz.

T he reference voltage source is a modified bandgap type

and is nominally –1.26 volts. This reference supply requires

no external regulation. T o reduce the possibility of noise

generation and/or instability, Pin 15 (REFERENCE OUT )

can be decoupled using a high-quality ceramic chip

capacitor. Stabilization of the internal loop amplifier is by a

single capacitor connected from Pin 17 (COMPENSATION)

to ground. The minimum value for this capacitor is 3900 pF,

although a 0.01 µF ceramic chip capacitor is recommended.

An inherently low glitch design is used, and the complementary

current outputs are suitable for driving transmission lines

directly. Nominal full-scale output is 20 mA, which corresponds

to a 1 volt drop across a 50 Ω load, or ±1 volt across 100 Ω

returned to +1 volt. T he actual output current is determined by

the on-chip reference voltage (V_REFϷ –1.26 V) and an external

current setting resistor, R_SET

Full-scale output current I_OUTwith digital “1” at all inputs is

calculated with the equation:

T he incredible speed characteristics of the AD9768SD D/A

converter make it attractive for a wide range of high speed

applications. T he ability of the unit to operate as a two-

quadrant multiplying D/A converter adds another dimen-

sion to its usefulness and makes the AD9768SD a truly

versatile device.

V_RET–V_REF

I_OUT= 4 ×

R_SET

T he setting resistor R_SETand the output load resistor should

both have low temperature coefficients. A complementary

AD 9768SE P IN CO NNECTIO NS

is also provided.

I_OUT

AD 9768JD /SD P IN CO NNECTIO NS

REV. A

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 617/ 329-4700

Fax: 617/ 326-8703

12 3 4

中文翻译

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与AD9768SD相关器件

型号	品牌	获取价格	描述	数据表
AD9768SE	ADI	获取价格	Ultrahigh Speed IC D/A Converter
AD976A	ADI	获取价格	16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
AD976A_15	ADI	获取价格	16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
AD976AAN	ADI	获取价格	16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
AD976AAN	ROCHESTER	获取价格	1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP28, 0.300 INCH, SKINNY, PLA
AD976AANZ	ADI	获取价格	16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
AD976AAR	ADI	获取价格	16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
AD976AAR	ROCHESTER	获取价格	1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD976AARS	ADI	获取价格	16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
AD976AARS	ROCHESTER	获取价格	1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28

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