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11696

更新时间： 2022-06-03 10:09:47

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
19页	913K
描述
12-Bit Micro Power Digital-to-Analog Converter with Rail-to-Rail Output

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11696 数据手册

June 2005

DAC121S101

12-Bit Micro Power Digital-to-Analog Converter with

Rail-to-Rail Output

General Description

Features

n Guaranteed Monotonicity

n Low Power Operation

The DAC121S101 is a full-featured, general purpose 12-bit

voltage-output digital-to-analog converter (DAC) that can

operate from a single +2.7V to 5.5V supply and consumes

just 177 µA of current at 3.6 Volts. The on-chip output

amplifier allows rail-to-rail output swing and the three wire

serial interface operates at clock rates up to 30 MHz over the

specified supply voltage range and is compatible with stan-

n Rail-to-Rail Voltage Output

n Power-on Reset to Zero Volts Output

n SYNC Interrupt Facility

n Wide power supply range (+2.7V to +5.5V)

n Small Packages

™

dard SPI , QSPI, MICROWIRE and DSP interfaces. Com-

n Power Down Feature

petitive devices are limited to 20 MHz clock rates at supply

voltages in the 2.7V to 3.6V range.

Key Specifications

The supply voltage for the DAC121S101 serves as its volt-

age reference, providing the widest possible output dynamic

range. A power-on reset circuit ensures that the DAC output

powers up to zero volts and remains there until there is a

valid write to the device. A power-down feature reduces

power consumption to less than a microWatt.

n Resolution

12 bits

+0.25, -0.15 LSB (typ)

8 µs (typ)

n DNL

n Output Settling Time

n Zero Code Error

n Full-Scale Error

n Power Consumption

— Normal Mode

4 mV (typ)

−0.06 %FS (typ)

The low power consumption and small packages of the

DAC121S101 make it an excellent choice for use in battery

operated equipment.

0.64mW (3.6V) / 1.43mW (5.5V) typ

— Pwr Down Mode 0.14µW (3.6V) / 0.39µW (5.5V) typ

The DAC121S101 is a direct replacement for the AD5320

and the DAC7512 and is one of a family of pin compatible

DACs, including the 8-bit DAC081S101 and the 10-bit

DAC101S101. The DAC121S101 operates over the ex-

tended industrial temperature range of −40˚C to +105˚C.

Applications

n Battery-Powered Instruments

n Digital Gain and Offset Adjustment

n Programmable Voltage & Current Sources

n Programmable Attenuators

Pin Configuration

20114902

20114901

Ordering Information

Order Numbers

DAC121S101CIMM

DAC121S101CIMMX

DAC121S101CIMK

DAC121S101CIMKX

DAC121S101EVAL

Temperature Range

−40˚C ≤ T_A≤ +105˚C

Package

MSOP

Top Mark

X60C

MSOP Tape-and-Reel

TSOT

X60C

X61C

TSOT Tape-and-Reel

Evaluation Board

X61C

™

SPI is a trademark of Motorola, Inc.

DS201149

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