HomedatasheetDAC7642VFBR

DAC7642VFBR Datasheet

ti DAC7642, 16-Bit, Dual Voltage Output DAC With Parallel Interface And Reset to Mid-scale
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Description

Features, Applications

FEATURES

LOW POWER: 4mW UNIPOLAR OR BIPOLAR OPERATION SETTLING TIME: to 0.003% FSR 15-BIT LINEARITY AND MONOTONICITY: to +85�C

DESCRIPTION

The DAC7642 and DAC7643 are dual channel, 16-bit, voltage output Digital-to-Analog Converters (DACs) which provide 15-bit monotonic performance over the specified temperature range. They accept 16-bit parallel input data, have double-buffered DAC input logic (allowing simultaneous update of all DACs), and provide a readback mode of the internal input registers. Programmable asynchronous reset clears all registers to a mid-scale code to a zero-scale code 0000H (DAC7643). These DACs can operate from a single +5V supply or from +5V and �5V supplies, providing an output range to +2.5V, respectively. Low power and small size per DAC make the DAC7642 and DAC7643 ideal for automatic test equipment, DAC-per-pin programmers, data acquisition systems, and closed-loop servo-control. The DAC7642 and DAC7643 are available a LQFP-32 package and specified over to +85�C temperature range.

q RESET TO MID-SCALE (DAC7642) OR ZERO-SCALE (DAC7643) q DATA READBACK q DOUBLE-BUFFERED DATA INPUTS

APPLICATIONS

PROCESS CONTROL CLOSED-LOOP SERVO-CONTROL MOTOR CONTROL DATA ACQUISITION SYSTEMS DAC-PER-PIN PROGRAMMERS

VOUTA Sense Input Register B DACSEL CS R/W DAC Register B DAC B VOUTB Sense

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.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

VCC to VSS............................................................................. to 11V VCC to GND.......................................................................... to 5.5V VREFL to VSS............................................................. �0.3V to (VCC � VSS) VCC to VREFH............................................................ �0.3V to (VCC � VSS) VREFH to VREFL......................................................... �0.3V to (VCC � VSS) Digital Input Voltage to GND................................... �0.3V to VCC + 0.3V Digital Output Voltage to GND................................. �0.3V to VCC + 0.3V Maximum Junction Temperature................................................... +150�C Operating Temperature Range........................................ to +85�C Storage Temperature Range......................................... to +125�C Lead Temperature (soldering, 10s)............................................... +300�C NOTE: (1) Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability.

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

PACKAGE DESIGNATOR(1) VF SPECIFIED TEMPERATURE RANGE to +85�C PACKAGE MARKING DAC7642 ORDERING NUMBER DAC7643VFB R TRANSPORT MEDIA, QUANTITY Tape and Reel, 250 Tape and Reel, 1000 Tape and Reel, 250 Tape and Reel, 1000 Tape and Reel, 250 Tape and Reel, 1000 Tape and Reel, 250 Tape and Reel, 1000

NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.

TA = TMIN to TMAX, VCC = +5V, VSS = �5V, VREFH = +2.5V, and VREFL = �2.5V, unless otherwise noted. DAC7642VF DAC7643VF PARAMETER ACCURACY Linearity Error Linearity Match Differential Linearity Error Monotonicity, TMIN to TMAX Bipolar Zero Error Bipolar Zero Error Drift Full-Scale Error Full-Scale Error Drift Bipolar Zero Matching Full-Scale Matching Power-Supply Rejection Ratio (PSRR) ANALOG OUTPUT Voltage Output Current Maximum Load Capacitance Short-Circuit Current Short-Circuit Duration REFERENCE INPUT Ref High Input Voltage Range Ref Low Input Voltage Range Ref High Input Current Ref Low Input Current DYNAMIC PERFORMANCE Settling Time Channel-to-Channel Crosstalk Digital Feedthrough Output Noise Voltage DAC Glitch DIGITAL INPUT VIH VIL IIH IIL DIGITAL OUTPUT VOH VOL POWER SUPPLY VCC VSS ICC ISS Power TEMPERATURE RANGE Specified Performance Specifications same as DAC7642VF and DAC7643VF. IOH = �0.8mA IOL �0.003%, 5V Output Step See Figure 7FFFH 0.7 VCC 0.3 VCC CONDITIONS MIN TYP VREFL Indefinite VREFL VREFH +1.25 MAX MIN DAC7642VFB DAC7643VFB TYP �2 �1 MAX �3 �2 UNITS

Channel-to-Channel Matching Channel-to-Channel Matching At Full-Scale 10k No Oscillation GND, VCC or VSS


Features

Parameters

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Manufacturer information

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