AD7304BRZ

更新时间： 2024-11-25 12:34:23

品牌	Logo	应用领域
亚德诺 - ADI		转换器数模转换器光电二极管
页数	文件大小	规格书
20页	902K
描述
3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC

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AD7304BRZ 数据手册

3 V/5 V, Rail-to-Rail

Quad, 8-Bit DAC

AD7304/AD7305

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

Four 8-bit DACs in one package

REF

+3 V, +5 V, and 5 V operation

PWR-ON

RESET

INPUT

REG A

DAC A

REG

DAC A

DAC B

DAC C

DAC D

Rail-to-rail REF input to voltage output swing

2.6 MHz reference multiplying bandwidth

Internal power-on reset

SPI serial interface-compatible—AD7304

Fast parallel interface—AD7305

40 µA power shutdown

OUT

INPUT

REG B

DAC B

REG

OUT

INPUT

REG C

DAC C

REG

OUT

SERIAL

REG

SDI/SHDN

CLK

INPUT

REG D

DAC D

REG

APPLICATIONS

Automotive output span voltage

Instrumentation, digitally controlled calibration

Pin-compatible AD7226 replacement when V_DD< 5.5 V

AD7304

GND

C V

REF

CLR LDAC

Figure 1.

REF

GENERAL DESCRIPTION

PWR-ON

RESET

INPUT

REG A

DAC A

The AD7304/AD7305¹are quad, 8-bit DACs that operate from

a single +3 V to +5 V supply, or 5 V supplies. The AD7304 has

a serial interface, while the AD7305 has a parallel interface.

Internal precision buffers swing rail-to-rail. The reference input

range includes both supply rails, allowing for positive or negative

full-scale output voltages. Operation is guaranteed over the

supply voltage range of 2.7 V to 5.5 V, consuming less than

9 mW from a 3 V supply.

DAC A

DAC B

DAC C

DAC D

OUT

REG

DB0

DB1

DB2

DB3

DB4

DB5

DB6

INPUT

REG B

DAC B

OUT

REG

INPUT

REG C

DAC C

OUT

REG

INPUT

REG D

DAC D

REG

A0/SHDN

DECODE

AD7305

GND

LDAC

The full-scale voltage output is determined by the external

reference input voltage applied. The rail-to-rail V_REFinput to

DAC V_OUTallows for a full-scale voltage set equal to the positive

supply, V_DD, the negative supply, V_SS, or any value in between.

Figure 2.

When operating from less than 5.5 V, the AD7305 is

pin-compatible with the popular industry-standard AD7226.

The AD7304’s doubled-buffered serial data interface offers high

speed, 3-wire, SPI®-, and microcontroller-compatible inputs

An internal power-on reset places both parts in the zero-scale

state at turn-on. A 40 µA power shutdown (SHDN) feature is

activated on both parts by three-stating the SDI/SHDN pin on

the AD7304 and three-stating the A0/SHDN address pin on the

AD7305.

using data in (SDI), clock (CLK), and chip select ( ) pins.

Additionally, an internal power-on reset sets the output to zero

scale.

The parallel input AD7305 uses a standard address decode

The AD7304/AD7305 are specified over the extended industrial

−40°C to +85°C and the automotive −40°C to +125°C

temperature ranges. AD7304s are available in a wide-body

16-lead SOIC (R-16) package. The parallel input AD7305 is

available in the wide-body 20-lead SOIC (R-20) surface-mount

package. For ultracompact applications, the thin 1.1 mm,

16-lead TSSOP (RU-16) package is available for the AD7304,

while the 20-lead TSSOP (RU-20) houses the AD7305.

along with the

registers.

control line to load data into the input

The double-buffered architecture allows all four input registers

LDAC

to be preloaded with new values, followed by an

control

strobe that copies all the new data into the DAC registers,

thereby updating the analog output values.

_____________________________________________________

¹Protected under Patent No. 5684481.

Rev. C

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 owners.

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

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

12 3 4 5 6 7...20

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AD7304BRZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7304BRUZ	ADI	完全替代	+3V/+5V, Rail-to-Rail Quad, 8-Bit DAC Serial-IN
AD7304BRZ-REEL	ADI	完全替代	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304BRU-REEL7	ADI	完全替代	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC

与AD7304BRZ相关器件

型号	品牌	获取价格	描述	数据表
AD7304BRZ1	ADI	获取价格	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304BRZ-REEL	ADI	获取价格	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304BRZ-REEL1	ADI	获取价格	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304YR	ADI	获取价格	+3 V/+5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304YR	ROCHESTER	获取价格	SERIAL INPUT LOADING, 1 us SETTLING TIME, 8-BIT DAC, PDSO16, MS-013AA, SOIC-16
AD7304YRZ	ADI	获取价格	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304YRZ1	ADI	获取价格	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7305	ADI	获取价格	+3 V/+5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7305*	ADI	获取价格	+3 V/+5 V. Rail-to-Rail Quad. 8-Bit DAC
AD7305_15	ADI	获取价格	3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC

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