Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsData collecting ICsData acquisition IC - DA converter (DAC) SOIC 8

LTC8043

Serial 12-Bit Multiplying

DAC in SO-8

■

Improved Direct Replacement for DAC-8043 and

MAX543

■

SO-8 Package

■

DNL and INL Over Temperature:

0.5LSB

■

Easy, Fast and Flexible Serial Interface

■

1LSB Maximum Gain Error

■

4-Quadrant Multiplication

■

Low Power Consumption

■

Low Cost

The LTC

8043 is a serial-input 12-bit multiplying digital-

to-analog converter (DAC). It is a superior pin compatible

replacement for the DAC-8043. Improvements include

better accuracy, better stability over temperature and

supply variations, lower sensitivity to output amplifier

offset, tighter timing specifications and lower output ca-

pacitance.

An easy-to-use 3-wire serial interface is well-suited to

remote or isolated applications

The LTC8043 is extremely versatile. It can be used for

2-quadrant and 4-quadrant multiplying, programmable

gain and single supply applications, such as noninverting

voltage output mode.

Parts are available in 8-pin SO and PDIP packages and are

specified over the extended industrial temperature range,

–40°C to 85°C.

FEATURES

DESCRIPTION

■

Process Control and Industrial Automation

■

Remote Microprocessor-Controlled Systems

■

Digitally Controlled Filters and Power Supplies

■

Programmable Gain Amplifiers

■

Automatic Test Equipment

APPLICATIONS

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATION

SO-8 Multiplying DAC Has Easy 3-Wire Serial Interface

REF

LTC8043

GND

CLOCK

DATA

LOAD

CLK

SRI

OUT

33pF

OUT

LTC8043 • TA01

–

1097

Integral Nonlinearity Over Temperature

DIGITAL INPUT CODE

–1.0

INTEGRAL NONLINERARITY (LSB)

–0.5

1.0

1024 2048 2560

LTC8043 • TPC02

0.5

512 1536 3072 3584 4095

= 25°C

= 85°C

= –40°C

Summary of content (4 pages)

PAGE 1
LTC8043 Serial 12-Bit Multiplying DAC in SO-8 U DESCRIPTION FEATURES ■ ■ ■ ■ ■ ■ ■ ■ The LTC®8043 is a serial-input 12-bit multiplying digitalto-analog converter (DAC). It is a superior pin compatible replacement for the DAC-8043. Improvements include better accuracy, better stability over temperature and supply variations, lower sensitivity to output amplifier offset, tighter timing specifications and lower output capacitance.
PAGE 2
LTC8043 U W U U W W W ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION VDD to GND................................................. – 0.5V to 7V Digital Inputs to GND .................. – 0.5V to (VDD + 0.5V) VIOUT to GND ............................... – 0.5V to (VDD + 0.5V) VREF to GND.......................................................... ±25V VRFB to GND .......................................................... ±25V Maximum Junction Temperature ..........................
PAGE 3
LTC8043 ELECTRICAL CHARACTERISTICS VDD = 5V, VREF = 10V, VIOUT = GND = 0V, TA = TMIN to TMAX, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN ALL GRADES TYP MAX UNITS Digital Inputs VIH Digital Input High Voltage ● VIL Digital Input Low Voltage ● IIN Digital Input Current VIN = 0V to VDD ● CIN Digital Input Capacitance VIN = 0V,(Note 3) ● 2.4 V 0.001 0.
PAGE 4
LTC8043 WU W TI I G DIAGRA tDH tDS tCL tCH CLK INPUT tSRI PREVIOUS WORD SRI BIT 1 MSB BIT 2 BIT 12 LSB BIT 11 tASB LD tLD 8043TD01 U TYPICAL APPLICATIONS N Unipolar Operation (2-Quadrant Multiplication) VREF –10V TO 10V 5V 0.1µF 7 µP 6 5 1 2 VDD VREF RFB 8 Table 1.