DAC8426BR Datasheet PDF - Analog Devices
Part Number | DAC8426BR | |
Description | Quad 8-Bit Voltage Out CMOS DAC Complete with Internal 10 V Reference | |
Manufacturers | Analog Devices | |
Logo | ||
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Quad 8-Bit Voltage Out CMOS DAC
Complete with Internal 10 V Reference
DAC8426
FEATURES
No Adjustments Required, Total Error ؎1 LSB Max
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 AD7226,
Eliminates External Reference
APPLICATIONS
Process Controls
Multichannel Microprocessor Controlled:
System Calibration
Op Amp Offset and Gain Adjust
Level and Threshold Setting
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%
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.
FUNCTIONAL BLOCK DIAGRAM
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
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Typical Performance Characteristics–DAC8426
Channel-to-Channel Matching (DACs
A, B, C, D, Superimposed)
Relative Accuracy vs. Code
at TA = –55°C, +25°C, +125°C
(All Superimposed)
Zero Code Error vs. Temperature
Long Term Drift Accelerated by
Burn-In
VOUT Noise Density vs. Frequency
Broadband Noise (DC to 200 kHz)
Power Supply Current vs.
Temperature
PSRR vs. Frequency
PSRR(+)
=
–20
LOG
V
⌬OUVTDD(0)
,
VDD = +15 V ؎1 VP, VSS = 0 V
PSRR(–) = –20 LOG V⌬OUVTSS(0) ,
VDD = +15 V, VSS = –4 V ؎1 VP
REV. C
–5–
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for DAC8426BR electronic component. |
Information | Total 12 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ DAC8426BR.PDF Datasheet ] |
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