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AD7226KR

Description
Motor / Motion / Ignition Controllers u0026 Drivers DMOS Full Bridge
Categorysemiconductor    Analog mixed-signal IC   
File Size491KB,17 Pages
ManufacturerADI
Websitehttps://www.analog.com
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AD7226KR Overview

Motor / Motion / Ignition Controllers u0026 Drivers DMOS Full Bridge

AD7226KR Parametric

Parameter NameAttribute value
Product CategoryDigital to Analog Converters - DAC
ManufacturerADI
RoHSNo
Resolution8 bit
Number of Channels4 Channel
Settling Time4 us
Interface TypeParallel
Supply Voltage - Max15.75 V
Supply Voltage - Min14.25 V
Maximum Operating Temperature+ 85 C
Minimum Operating Temperature- 40 C
Mounting StyleSMD/SMT
Package / CaseSOIC-20
PackagingTube
Number of Converters4 Converter
ProductDigital to Analog Converters
Factory Pack Quantity37
Unit Weight0.028254 oz
LC MOS
Quad 8-Bit D/A Converter
AD7226
FEATURES
Four 8-Bit DACs with Output Amplifiers
Skinny 20-Lead DIP, SOIC, SSOP, and PLCC Packages
Microprocessor-Compatible
TTL/CMOS-Compatible
No User Trims
Extended Temperature Range Operation
Single Supply Operation Possible
APPLICATIONS
Process Control
Automatic Test Equipment
Automatic Calibration of Large System Parameters,
e.g., Gain/Offset
MSB
DATA
(8-BIT)
LSB
2
FUNCTIONAL BLOCK DIAGRAM
V
REF
V
DD
LATCH A
DAC A
A
V
OUT
A
D
A
T
A
B
U
S
LATCH B
DAC B
B
V
OUT
B
LATCH C
DAC C
C
V
OUT
C
LATCH D
WR
A1
A0
CONTROL
LOGIC
DAC D
D
V
OUT
D
AD7226
V
SS
AGND
AGND
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The AD7226 contains four 8-bit voltage-output digital-to-
analog converters, with output buffer amplifiers and interface
logic on a single monolithic chip. No external trims are required
to achieve full specified performance for the part.
Separate on-chip latches are provided for each of the four D/A
converters. Data is transferred into one of these data latches
through a common 8-bit TTL/CMOS (5 V) compatible input
port. Control inputs A0 and A1 determine which DAC is
loaded when
WR
goes low. The control logic is speed-compat-
ible with most 8-bit microprocessors.
Each D/A converter includes an output buffer amplifier capable
of driving up to 5 mA of output current. The amplifiers’ offsets
are laser-trimmed during manufacture, thereby eliminating any
requirement for offset nulling.
Specified performance is guaranteed for input reference voltages
from 2 V to 12.5 V with dual supplies. The part is also specified
for single supply operation at a reference of 10 V.
The AD7226 is fabricated in an all ion-implanted high speed
Linear Compatible CMOS (LC
2
MOS) process, which has been
specifically developed to allow high speed digital logic circuits
and precision analog circuits to be integrated on the same chip.
1. DAC-to-DAC Matching
Since all four DACs are fabricated on the same chip at the
same time, precise matching and tracking between the DACs
is inherent.
2. Single-Supply Operation
The voltage mode configuration of the DACs allows the
AD7226 to be operated from a single power supply rail.
3. Microprocessor Compatibility
The AD7226 has a common 8-bit data bus with individual
DAC latches, providing a versatile control architecture for
simple interface to microprocessors. All latch enable signals
are level triggered.
4. Small Size
Combining four DACs and four op amps plus interface logic
into a 20-pin package allows a dramatic reduction in board
space requirements and offers increased reliability in systems
using multiple converters. Its pinout is aimed at optimizing
board layout with all the analog inputs and outputs at one
end of the package and all the digital inputs at the other.
REV.
D
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax:
781-461-3113
© 20
11
Analog Devices, Inc. All rights reserved.

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Product Category Digital to Analog Converters - DAC Digital to Analog Converters - DAC Digital to Analog Converters - DAC Digital to Analog Converters - DAC Digital to Analog Converters - DAC Digital to Analog Converters - DAC
Manufacturer ADI ADI ADI ADI ADI ADI
RoHS No No No No Details No
Resolution 8 bit 8 bit 8 bit 8 bit 8 bit 8 bit
Number of Channels 4 Channel 4 Channel 4 Channel 4 Channel 4 Channel 4 Channel
Settling Time 4 us 4 us 4 us 4 us 4 us 4 us
Supply Voltage - Max 15.75 V 16.5 V 16.5 V 15.75 V 16.5 V 15.75 V, 16.5 V
Supply Voltage - Min 14.25 V 11.4 V 11.4 V 14.25 V 11.4 V 14.25 V, 11.4 V
Maximum Operating Temperature + 85 C + 85 C + 85 C + 85 C + 85 C + 85 C
Minimum Operating Temperature - 40 C - 40 C - 40 C - 40 C - 40 C - 40 C
Mounting Style SMD/SMT Through Hole Through Hole Through Hole SMD/SMT SMD/SMT
Package / Case SOIC-20 CDIP-20 CDIP-20 PDIP-20 PLCC-20 PLCC-20
Packaging Tube Tube Tube Tube Tube Tube
Number of Converters 4 Converter 4 Converter 4 Converter 4 Converter 4 Converter 4 Converter
Product Digital to Analog Converters Digital to Analog Converters Digital to Analog Converters Digital to Analog Converters Digital to Analog Converters Digital to Analog Converters
Factory Pack Quantity 37 18 18 18 49 49
Unit Weight 0.028254 oz 0.007760 oz 0.007760 oz 0.079719 oz 0.025468 oz 0.025468 oz
Operating Supply Current - 13 mA 13 mA - 13 mA 13 mA
Output Type - Voltage Buffered Voltage Buffered - Voltage Buffered Voltage
Pd - Power Dissipation - 500 mW (1/2 W) 500 mW (1/2 W) - 500 mW (1/2 W) 500 mW (1/2 W)
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