DAC7728

更新时间： 2024-11-28 11:48:51

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
54页	1471K
描述
Octal, 12-Bit, Low-Power, High-Voltage Output, Parallel Input DIGITAL-TO-ANALOG CONVERTER

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DAC7728 数据手册

DAC7728

www.ti.com

SBAS461A –JUNE 2009–REVISED NOVEMBER 2009

Octal, 12-Bit, Low-Power, High-Voltage Output, Parallel Input

DIGITAL-TO-ANALOG CONVERTER

Check for Samples: DAC7728

FEATURES

DESCRIPTION

•

Bipolar Output: ±3V, up to ±16.5V

The DAC7728 is

digital-to-analog converter (DAC). With

low-power, octal, 12-bit

Unipolar Output: 0V to +33V

12-Bit Resolution

reference, the output can either be a bipolar ±15V

voltage when operating from a dual ±15.5V (or

higher) power supply, or a unipolar 0V to +30V

voltage when operating from a +30.5V power supply.

With a 5.5V reference, the output can either be

±16.5V for a dual ±17V (or higher) power supply, or a

unipolar 0V to +33V voltage when operating from a

+33.5V (or higher) power supply. This DAC provides

low-power operation, good linearity, and low glitch

over the specified temperature range of –40°C to

+105°C. This device is trimmed in manufacturing and

has very low zero and full-scale error. In addition,

user calibration can be performed over the entire

signal chain. The output range can be offset by using

the DAC Offset Register.

Low Power: 13.5mW/Ch

Relative Accuracy: 1LSB Max

Flexible User Calibration

Low Zero/Gain Error: ±1 LSB Max

Low Glitch: 4nV-s

Settling Time: 15μs

Channel Monitor Output

Programmable Gain: x4, x6

Programmable Offset

12-Bit Parallel Interface:

50MHz (Write Operation)

The DAC7728 features a standard, high-speed, 12-bit

parallel interface that operates at up to 50MHz and is

1.8V, 3V, and 5V logic compatible, to communicate

with a DSP or microprocessor. The eight DACs and

the auxiliary registers are addressed with five address

lines. The device features double-buffered interface

logic. An asynchronous load input (LDAC) transfers

data from the DAC data register to the DAC latch.

The asynchronous CLR input sets the output of all

eight DACs to AGND. The V_MONpin is a monitor

output that connects to the individual analog outputs,

the offset DAC, and the reference buffer outputs

through a multiplexer (mux).

•

Packages: QFN-56 (8mm x 8mm),

TQFP-64 (10mm x 10mm)

APPLICATIONS

•

Automatic Test Equipment

PLC and Industrial Process Control

Communications

IOV_DD

DGND

DV_DD

AV_DD

AV_SS

REF-A

Analog Monitor

DAC7728

V_OUT-0

V_OUT-7

V_MON

Reference

Buffer A

OFFSET

DAC A

Ref Buffer A

Command

Registers

Ref Buffer B

OFFSET-B

The DAC7728 is pin-to-pin compatible with the

DAC8728 (16-bit) and the DAC8228 (14-bit).

R/W

To DAC-0, DAC-1,

DAC-2, DAC-3

(When Correction Engine Disabled)

OFFSET-A

V_OUT-0

DAC-0

Input Data

Correction

Engine

DAC-0

Data

Latch-0

D11

To DAC-0, DAC-1,

DAC-2, DAC-3

LDAC

User Calibration:

Zero Register 0

Gain Regsiter 0

Internal Trimming

Zero/Gain; INL

RST

AGND-A

RSTSEL

LDAC

To DAC-4, DAC-5, DAC-6, DAC-7

CLR

USB/BTC

BUSY

OFFSET-B

V_OUT-7

(Same Function Blocks

for All Channels)

Reference

Buffer B

OFFSET

DAC B

GPIO

Power-Up/

Power-Down

Control

AGND-B

REF-B

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...54

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DAC7728 替代型号

型号	品牌	替代类型	描述	数据表
DAC8728	TI	功能相似	Octal, 16-Bit, Low-Power, High-Voltage Output, Parallel Input DIGITAL-TO-ANALOG CONVERTER
DAC8718	TI	功能相似	Octal, 16-Bit, Low-Power, High-Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER
DAC7718	TI	功能相似	Octal, 12-Bit, Low-Power, High-Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER

与DAC7728相关器件

型号	品牌	获取价格	描述	数据表
DAC7728SPAG	TI	获取价格	Octal, 12-Bit, Low-Power, High-Voltage Output, Parallel Input DIGITAL-TO-ANALOG CONVERTER
DAC7728SPAGR	TI	获取价格	Octal, 12-Bit, Low-Power, High-Voltage Output, Parallel Input DIGITAL-TO-ANALOG CONVERTER
DAC7728SRTQR	TI	获取价格	Octal, 12-Bit, Low-Power, High-Voltage Output, Parallel Input DIGITAL-TO-ANALOG CONVERTER
DAC7728SRTQT	TI	获取价格	Octal, 12-Bit, Low-Power, High-Voltage Output, Parallel Input DIGITAL-TO-ANALOG CONVERTER
DAC7731	BB	获取价格	16-Bit, Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER
DAC7731	TI	获取价格	具有内部 +10V 基准和串行 I/F 的 16 位单通道数模转换器
DAC7731E	BB	获取价格	16-Bit, Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER
DAC7731E	TI	获取价格	具有内部 +10V 基准和串行 I/F 的 16 位单通道数模转换器 \| DB \| 24
DAC7731E/1K	TI	获取价格	具有内部 +10V 基准和串行 I/F 的 16 位单通道数模转换器 \| DB \| 24
DAC7731E/1KG4	TI	获取价格	SERIAL INPUT LOADING, 3us SETTLING TIME, 16-BIT DAC, PDSO24, GREEN, PLASTIC, SSOP-24

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