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參數(shù)資料
| 型號： | AD7111ABN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 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% |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 175K |
| 代理商： | AD7111ABN |
REV. 0
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 LOGDAC
Logarithmc D/AConverter
AD7111/AD7111A
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 DIAGRAMS
17-BIT DAC
17-BIT LATCH
DECODE LOGIC
8-BIT BUFFER
CONTROL LOGIC
AD7111
I
OUT
AGND
R
FB
V
DD
V
IN
DGND
CS
WR
D0 – D7
17-BIT DAC
17-BIT LATCH
DECODE LOGIC
8-BIT BUFFER
CONTROL LOGIC
AD7111A
I
OUT
AGND
R
FB
V
DD
V
IN
DGND
CS
WR
D0 – D7
FEATURES
Dynamic Range: 88.5 dB
Resolution: 0.375 dB
On-Chip Data Latches
+5 V Operation
AD7111A Pin Compatible with AD7524
Low Power
APPLICATIONS
Audio Attenuators
Sonar Systems
Function Generators
Digitally Controlled AGC System
GE NE RAL DE SCRIPT ION
T he LOGDAC
AD7111/AD7111A are monolithic multiplying
D/A converters featuring wide dynamic range in a small pack-
age. Both DACs can attenuate an analog input signal over the
range 0 dB to 88.5 dB in 0.375 dB steps. T hey are available in
16-pin DIPs and SOIC packages. T he AD7111 is also available
in a 20-terminal LCCC package.
T he degree of attenuation across the DAC is determined by an
8-bit word applied to the onboard decode logic. T his 8-bit word
is decoded into a 17-bit word which is then applied to a 17-bit
R-2R ladder. T he very fine step resolution, which is available
over the entire dynamic range, is due to the use of this 17-bit
DAC.
T he AD7111/AD7111A are easily interfaced to a standard 8-bit
MPU bus via an 8-bit data port and standard microprocessor
control lines. T he AD7111
WR
input is edge triggered and re-
quires a rising edge to load new data to the DAC. T he AD7111A
WR
is level triggered to allow transparent operation of the
latches, if required. It should also be noted that the AD7111A is
exactly pin and function-compatible with the AD7524, an in-
dustry standard 8-bit multiplying DAC. T his allows an easy up-
grading of existing AD7524 designs which would benefit both
from the wider dynamic range and the finer step resolution of-
fered by the AD7111A.
T he AD7111/AD7111A are fabricated in Linear Compatible
CMOS (LC
2
MOS), an advanced, mixed technology process that
combines precision bipolar circuits with low power CMOS logic.
LOGDAC is a registered trademark of Analog Devices, Inc.
PRODUCT HIGHLIGHT S
1. Wide Dynamic Range: 0 dB to 88.5 dB attenuation range in
0.375 dB steps.
2. Small Package: T he AD7111/AD7111A are available in
16-pin DIPs and SOIC packages.
3. T ransparent Latch Operation: By tying the
CS
and
WR
in-
puts low, the DAC latches in the AD7111A can be made
transparent.
4. Fast Microprocessor Interface: Data setup times of 25 ns and
write pulse width of 57 ns make the AD7111A compatible
with modern microprocessors.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7111ABR | LC2MOS LOGDAC Logarithmic D/A Converter |
| AD7111ACN | LC2MOS LOGDAC Logarithmic D/A Converter |
| AD7111ACR | 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% |
| AD7111BQ | 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% |
| AD7111CQ | LC2MOS LOGDAC Logarithmic D/A Converter |
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