DAC8426FP Analog Devices Inc, DAC8426FP Datasheet

IC DAC 8BIT QUAD 10VREF 20-DIP

DAC8426FP

Manufacturer Part Number
DAC8426FP
Description
IC DAC 8BIT QUAD 10VREF 20-DIP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of DAC8426FP

Rohs Status
RoHS non-compliant
Settling Time
3µs
Number Of Bits
8
Number Of Converters
4
Voltage Supply Source
Dual ±
Power Dissipation (max)
210mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Data Interface
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DAC8426FP
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
The DAC8426 is a complete quad voltage output D/A converter
with internal reference. This product fits directly into any exist-
ing 7226 socket where the user currently has a 10 V external
reference. The external reference is no longer necessary. The
internal reference of the DAC8426 is laser-trimmed to 0.4%
FEATURES
No Adjustments Required, Total Error
Four Voltage-Output DACs on a Single Chip
Internal 10 V Bandgap Reference
Operates from Single
Fast 50 ns Data Load Time, All Temperatures
Pin-for-Pin Replacement for PM-7226 and AD7226,
APPLICATIONS
Process Controls
Multichannel Microprocessor Controlled:
Over Temperature
Eliminates External Reference
System Calibration
Op Amp Offset and Gain Adjust
Level and Threshold Setting
15 V Supply
1 LSB Max
FUNCTIONAL BLOCK DIAGRAM
Complete with Internal 10 V Reference
Quad 8-Bit Voltage Out CMOS DAC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
offering a 25 ppm/ C temperature coefficient and 5 mA of exter-
nal load driving capability.
The DAC8426 contains four 8-bit voltage-output CMOS D/A
converters on a single chip. A 10 V output bandgap reference
sets the output full-scale voltage. The circuit also includes four
input latches and interface control logic.
One of the four latches, selected by the address inputs, is loaded
from the 8-bit data bus input when the write strobe is active
low. All digital inputs are TTL/CMOS (5 V) compatible. The
on-board amplifiers can drive up to 10 mA from either a single
or dual supply. The on-board reference that is always connected
to the internal DACs has 5 mA available to drive external devices.
Its compact size, low power, and economical cost-per-channel,
make the DAC8426 attractive for applications requiring mul-
tiple D/A converters without sacrificing circuit-board space. Sys-
tem reliability is also increased due to reduced parts count.
PMI’s advanced oxide-based, silicon-gate, CMOS process al-
lows the DAC8426’s analog and digital circuitry to be manufac-
tured on the same chip. This, coupled with PMI’s highly stable
thin-film R-2R resistor ladder, aids in matching and tempera-
ture tracking between DACs.
DAC8426
Fax: 617/326-8703

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DAC8426FP Summary of contents

Page 1

FEATURES No Adjustments Required, Total Error Over Temperature Four Voltage-Output DACs on a Single Chip Internal 10 V Bandgap Reference Operates from Single 15 V Supply Fast 50 ns Data Load Time, All Temperatures Pin-for-Pin Replacement for PM-7226 and ...

Page 2

DAC8426–SPECIFICATIONS applies for DAC8426AR/BR – +85 C applies for DAC8426ER/EP/FR/FP/FS, unless otherwise noted.) A Parameter STATIC PERFORMANCE Resolution 1 Total Unadjusted Error Relative Accuracy 2 Differential Nonlinearity Full-Scale Temperature Coefficient Zero Scale Error Zero Scale Error ...

Page 3

... DAC8426ER 1 LSB DAC8426EP 1 LSB 2 DAC8426BR 2 LSB DAC8426FR 2 LSB DAC8426FP 2 LSB 3 DAC8426FS 2 LSB NOTES 1 Burn-in is available on commercial and industrial temperature range parts in cerdip, plastic DIP, and TO-can packages. 2 For devices processed in total compliance to MIL-STD-883, add /883 after part number. Consult factory for 883 data sheet. ...

Page 4

DAC8426 DICE CHARACTERISTICS DIE SIZE 0.129 0.152 inch, 19,608 sq. mils (3.28 3.86 mm, 12.65 sq. mm) WAFER TEST LIMITS + apply for DACs and D. Parameter Symbol Total Unadjusted Error TUE ...

Page 5

Channel-to-Channel Matching (DACs Superimposed) Long Term Drift Accelerated by Burn-In Power Supply Current vs. Temperature REV. C Typical Performance Characteristics–DAC8426 Relative Accuracy vs. Code –55 C, +25 C, +125 C A (All Superimposed) ...

Page 6

DAC8426–Typical Performance Characteristics V OUT Error from 10.000 V REF vs. Temperature V OUT Line Regulation vs. Temperature REF Output Impedance (V OUT) REF vs. Frequency V REF –6– V OUT Load Regulation REF vs. Temperature OUT Start Up REV. ...

Page 7

PARAMETER DEFINITIONS TOTAL UNADJUSTED ERROR (TUE) This specification includes the Full-Scale-Error, Relative Accu- racy Zero-Code-Error and the internal reference voltage. The ideal Full-Scale output voltage minus 1 LSB which equals 9.961 volts. Each LSB equals 10 V ...

Page 8

DAC8426 The outputs can withstand an indefinite short-circuit to AGND to typically 50 mA. The output may also be shorted to any volt- age between V and V ; however, care must be taken to not DD SS exceed the ...

Page 9

... Table II lists output voltages for a given digital input. The total unadjusted error (TUE) specification of the product grade used determines the output tolerances of the values listed in Table II. For example LSB grade DAC8426FP loaded with decimal 128 (half-scale) would have a guaranteed output voltage oc- ...

Page 10

DAC8426 Figure 6. Bipolar Operation CONNECTION AND LAYOUT GUIDELINES Layout and design techniques used in the interface between dig- ital and analog circuitry require special attention to detail. The following considerations should be evaluated prior to PCB layout. 1. Return ...

Page 11

MICROPROCESSOR INTERFACING The DAC8426 easily interfaces to most 8- and 16-bit wide data- bus systems. Serial and 4-bit busses can also be accommodated with additional latches and control circuitry. Interfacing can be accomplished with databus transfers running with 50 ns ...

Page 12

DAC8426 0.200 (5.08) 0.200 (5.08) 0.125 (3.18) 0.210 (5.33) 0.160 (4.06) 0.115 (2.93) 0.0118 (0.30) 0.0040 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 20-Pin Cerdip (Q-20) 0.005 (0.13) MIN 0.098 (2.49) MAX 20 11 0.310 (7.87) 0.220 (5.59) ...

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