Datasheet > AD5666

AD5666

更新时间： 2024-11-06 04:30:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	820K
描述
Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP

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AD5666 数据手册

Quad, 16-Bit DAC with 5 ppm/°C

On-Chip Reference in 14-Lead TSSOP

AD5666

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Low power quad 16-bit DAC

14-lead TSSOP

On-chip 1.25 V/2.5 V, 5 ppm/°C reference

Power down to 400 nA @ 5 V, 200 nA @ 3 V

2.7 V to 5.5 V power supply

Guaranteed monotonic by design

Power-on reset to zero scale or midscale

3 power-down functions

REFIN REFOUT

AD5666

1.25V/2.5V

REF

LDAC

BUFFER

INPUT

DAC

STRING

DAC A

OUT

SCLK

INPUT

DAC

STRING

DAC B

INTERFACE

LOGIC

SYNC

DIN

DAC

STRING

DAC C

INPUT

DAC

STRING

DAC D

INPUT

SDO

POWER-DOWN

LOGIC

POWER-ON

RESET

Hardware LDAC with LDAC override function

CLR function to programmable code

SDO daisy-chaining option

POR

GND

LDAC CLR

Figure 1.

Rail-to-rail operation

APPLICATIONS

Process control

Data acquisition systems

Portable battery-powered instruments

Digital gain and offset adjustment

Programmable voltage and current sources

Programmable attenuators

GENERAL DESCRIPTION

The AD5666 is a low power, quad, 16-bit, buffered voltage-

output DAC. The part operates from a single 2.7 V to 5.5 V

supply and is guaranteed monotonic by design.

The outputs of all DACs can be updated simultaneously using

the function, with the added functionality of user-select-

LDAC

able DAC channels to simultaneously update. There is also an

asynchronous that clears all DACs to a software-selectable

CLR

The AD5666 has an on-chip reference with an internal gain of 2.

The AD5666-1 has a 1.25 V 5 ppm/°C reference, giving a full-scale

output of 2.5 V; the AD5666-2 has a 2.5 V 5 ppm/°C reference,

giving a full-scale output of 5 V. The on-board reference is off at

power-up, allowing the use of an external reference. The internal

reference is turned on by writing to the DAC.

code—0 V, midscale, or full scale.

The AD5666 utilizes a versatile 3-wire serial interface that operates

at clock rates of up to 50 MHz and is compatible with standard

SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The

on-chip precision output amplifier enables rail-to-rail output

swing.

The part incorporates a power-on reset circuit that ensures that

the DAC output powers up to 0 V (POR pin low) or to midscale

(POR pin high) and remains powered up at this level until a valid

write takes place. The part contains a power-down feature that

reduces the current consumption of the device to 400 nA at 5 V

and provides software-selectable output loads while in power-down

mode for any or all DAC channels.

PRODUCT HIGHLIGHTS

1. Quad, 16-bit DAC.

2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference.

3. Available in 14-lead TSSOP.

4. Selectable power-on reset to 0 V or midscale.

5. Power-down capability. When powered down, the DAC

typically consumes 200 nA at 3 V and 400 nA at 5 V.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与AD5666相关器件

型号	品牌	获取价格	描述	数据表
AD5666ARUZ-2	ADI	获取价格	Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP
AD5666ARUZ-2REEL7	ADI	获取价格	Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP
AD5666BRUZ-1	ADI	获取价格	Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP
AD5666BRUZ-1REEL7	ADI	获取价格	Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP
AD5666BRUZ-2	ADI	获取价格	Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP
AD5666BRUZ-2REEL7	ADI	获取价格	Quad, 16-Bit DAC with 5 ppm/C On-Chip Reference in 14-Lead TSSOP
AD5667	ADI	获取价格	Dual, 12-/14-/16-Bit nanoDACs with 5ppm/C On-Chip Ref, I2C Interface
AD5667_15	ADI	获取价格	Dual, 12-/14-/16-Bit nanoDACs with 5 ppm/C On-Chip Reference, IC Interface
AD5667BCPZ-250RL7	ADI	获取价格	Dual, 12-/14-/16-Bit nanoDACs with 5ppm/C On-Chip Ref, I2C Interface
AD5667BCPZ-R2	ROCHESTER	获取价格	SERIAL INPUT LOADING, 4 us SETTLING TIME, 16-BIT DAC, DSO10, 3 X 3 MM, LEAD FREE, LFCSP-10

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