AD5648ARUZ-2 Datasheet

IC型號：
AD5648ARUZ-2
PDF描述：
Octal, 12-14-16 Bit Dac with 10ppm/∑C Max On-Chip Reference...
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306.69KB
PDF頁數(shù)：
24頁
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AD

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Preliminary Technical Data

FEATURES

Octal, 12-14-16 Bit Dac with 10ppm/擄C Max

On-Chip Reference in 14-Lead TSSOP

AD5628/AD5648/AD5668

Digital Gain and Offset Adjustment

Programmable Voltage and Current Sources

Programmable Attenuators

VDD

AD5628/AD5648/AD5668

NPUT

Low Power Smallest Pin compatible Octal DACs

AD5668: 16 Bits

AD5648: 14 Bits

AD5628: 12 Bits

12-Bit Accuracy Guaranteed

14/16-Lead TSSOP Package

On-chip 1.25/2.5V, 10ppm/擄C Reference

Power-Down to 200 nA @ 5V, 50 nA @ 3V

3V/5V Power Supply

Guaranteed Monotonic by Design

Power-On-Reset to Zero/Midscale

Three Power-Down Functions

Hardware /LDAC and /CLR functions

Rail-to-Rail Operation

Temperature Range -40擄C to +125擄C

REF

1.25/2.5V

Ref

DAC

STRING

DAC A

STRING

DAC B

STRING

DAC C

STRING

DAC D

BUFFER

LDAC

VOUTA

VOUTB

VOUTC

VOUTD

VOUTE

VOUTF

VOUTG

VOUTH

BUFFER

SCLK

INTERFACE

LOGIC

NPUT

REGIS-

TER

NPUT

BUFFER

SYNC

STRING

DAC E

STRING

DAC F

STRING

DAC G

STRING

DAC H

BUFFER

DIN

BUFFER

POWER-ON

RESET

POWER-DOWN

LOGIC

APPLICATIONS

ProcessControl

Data Acquisition Systems

Portable Battery Powered Instruments

LDAC* CLR*

*RU-16 PACKAGE ONLY

GND

Figure 1. Functional Block Diagram

GENERAL DESCRIPTION

The AD5628/48/68 family of devices are low power, octal, 12-

14-16-bit buffered voltage-out DACs. All devices operate from

a single +2.7V to +5.5V, and are guaranteed monotonic by

design.

The AD5628/48/68 have an on-chip reference with an internal

gain of two. The AD56x8-1 has a 1.25V 10ppm/擄C max

reference and the AD56x8-2,-3 have a 2.5V 10ppm/擄C max

reference. 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. The part incorporates a

power-on-reset circuit that ensures that the DAC output

powers up to zero volts (AD56x8-1,-2/) or midscale (AD5668-

3) and remains there until a valid write takes place. The part

contains a power-down feature that reduces the current

consumption of the device to 200nA at 5V and provides

software selectable output loads while in power-down mode for

any or all DACs channels.

The outputs of all DACs may be updated simultaneously using

the /LDAC function, with the added functionality of selecting

through software any number of DAC channels to synchronize.

There is also an asynchronous active low /CLR that clears all

DACs to a software selectable code - 0 V, midscale or fullscale .

The AD5628/48/68 utilizes a versatile three-wire serial

interface that operates at clock rates up to 50 MHz and is

compatible with standard SPI鈩? QSPI鈩? MICROWIRE鈩?and

DSP interface standards. Its on-chip precision output amplifier

allows rail-to-rail output swing to be achieved.

PRODUCT HIGHLIGHTS

Octal 12/14/16-Bit DAC; 12-Bit Accuracy Guaranteed.

On-chip 1.25/2.5V, 10ppm/擄C max Reference.

Available in 14/16-lead TSSOP package.

Power-On-Reset to Zero volts or Midscale.

Power-down capability. When powered down, the

DAC typically consumes 50nA at 3V and 200nA at 5V.

Rev. PrA

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

registered trademarks are the property of their respective companies.

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

www.analog.com

Tel: 781.329.4700

Fax: 781.326.8703

產(chǎn)品培訓(xùn)模塊
Data Converter FundamentalsDAC Architectures
標(biāo)準(zhǔn)包裝
1
類別
集成電路 (IC)
家庭
數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器
系列
denseDAC
設(shè)置時間
2.5µs
位數(shù)
14
數(shù)據(jù)接口
DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目
8
電壓電源
單電源
功率耗散（最大）
-
工作溫度
-40°C ~ 105°C
安裝類型
表面貼裝
封裝/外殼
16-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝
16-TSSOP
包裝
管件
輸出數(shù)目和類型
8 電壓，單極
采樣率（每秒）
95k

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