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參數(shù)資料
| 型號(hào)： | AD7225 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | ECONOLINE: REC2.2-S_DR/H1 - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75% |
| 中文描述： | LC2MOS四路8位DAC，帶有單獨(dú)的基準(zhǔn)輸入 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 339K |
| 代理商： | AD7225 |
REV. B
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.
a
LC
2
MOS Quad 8-Bit DAC
wth Separate Reference Inputs
AD7225
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FUNCT IONAL BLOCK DIAGRAM
GE NE RAL DE SCRIPT ION
T he AD7225 contains four 8-bit voltage output digital-to-
analog converters, with output buffer amplifiers and interface
logic on a single monolithic chip. Each D/A converter has a
separate reference input terminal. No external trims are re-
quired to achieve full specified performance for the part.
T he double-buffered interface logic consists of two 8-bit regis-
ters per channel–an input register and a DAC register. Control
inputs A0 and A1 determine which input register is loaded when
WR
goes low. Only the data held in the DAC registers deter-
mines the analog outputs of the converters. T he double-
buffering allows simultaneous update of all four outputs under
control of
LDAC
. All logic inputs are T T L and CMOS (5 V)
level compatible and the control logic is speed compatible with
most 8-bit microprocessors.
Specified performance is guaranteed for input reference voltages
from +2 V to +12.5 V when using dual supplies. T he part is also
specified for single supply operation using a reference of +10 V.
Each output buffer amplifier is capable of developing +10 V
across a 2 k
load.
T he AD7225 is fabricated on an all ion-implanted high-speed
Linear Compatible CMOS (LC
2
MOS) process which has been
specifically developed to integrate high speed digital logic cir-
cuits and precision analog circuitry on the same chip.
FEATURES
Four 8-Bit DACs with Output Amplifiers
Separate Reference Input for Each DAC
m
P Compatible with Double-Buffered Inputs
Simultaneous Update of All Four Outputs
Operates with Single or Dual Supplies
Extended Temperature Range Operation
No User Trims Required
Skinny 24-Pin DIP, SOIC and 28-Terminal Surface
Mount Packages
PRODUCT HIGHLIGHT S
1. DACs and Amplifiers on CMOS Chip
T he single-chip design of four 8-bit DACs and amplifiers al-
lows a dramatic reduction in board space requirements and
offers increased reliability in systems using multiple convert-
ers. Its pinout is aimed at optimizing board layout with all
analog inputs and outputs at one end of the package and all
digital inputs at the other.
2. Single or Dual Supply Operation
T he voltage-mode configuration of the AD7225 allows single
supply operation. T he part can also be operated with dual
supplies giving enhanced performance for some parameters.
3. Versatile Interface Logic
T he AD7225 has a common 8-bit data bus with individual
DAC latches, providing a versatile control architecture for
simple interface to microprocessors. T he double-buffered in-
terface allows simultaneous update of the four outputs.
4. Separate Reference Input for Each DAC
T he AD7225 offers great flexibility in dealing with input sig-
nals with a separate reference input provided for each DAC
and each reference having variable input voltage capability.
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| AD7225BQ | ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84% |
| AD7225CQ | LC2MOS Quad 8-Bit DAC with Separate Reference Inputs |
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| AD7225CQ | 制造商:Rochester Electronics LLC 功能描述:CMOS DAC IC - Bulk |
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