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參數(shù)資料
| 型號： | AD261BND-4 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | High Speed, Logic Isolator |
| 中文描述： | 5 I/O, PIA-GENERAL PURPOSE, PQIP16 |
| 封裝： | STAGGERED, PLASTIC, DIP-22/16 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 183K |
| 代理商： | AD261BND-4 |
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
AD261
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1997
Hgh Speed, Logic Isolator
FUNCT IONAL BLOCK DIAGRAM
TYPICAL MODEL
(AD261-2)
S0
F3
SYSTEM
FIELD
+5V dc
5Vdc RTN
+5V dc
5Vdc RTN
S1
2
S2
3
S3
S4
F0
F1
F2
F4
15
16
17
6
7
8
5
THREE-
LATCH
E
D
LINE 0
+5V dc
FLD
5V RTN
FLD
ENABLE
FLD
5V RTN
SYS
+5V dc
SYS
ENABLE
SYS
THREE-
LATCH
E
D
LINE 1
THREE-
LATCH
E
D
LINE 2
LATCH
D
E
STATE
LINE 4
LINE 3
LATCH
D
E
STATE
4
FEATURES
Isolation Test Voltage: To 3.5 kV rms
Five Isolated Logic Lines: Available in Six I/O Configurations
Logic Signal Bandwidth: 20 MHz (min)
CMV Transient Immunity: 10 kV/
m
s min
Waveform Edge Transmission Symmetry:
6
1 ns
Field and System Output Enable/Three-State Functions
Performance Rated Over –25
8
C to +85
8
C
UL1950, IEC950, EN60950 Certification (VDE, CE, Pending)
APPLICATIONS
PLC/DCS Analog Input and Output Cards
Communications Bus Isolation
General Data Acquisition Applications
IGBT Motor Drive Controls
High Speed Digital I/O Ports
GE NE RAL DE SCRIPT ION
T he AD261 is designed to isolate five digital control signals
to/from a microcontroller and its related field I/O components.
Six models allow all I/O combinations from five input lines to
five output lines, including combinations in between. Every
AD261 effectively replaces up to five opto-isolators.
Each line of the AD261 has a bandwidth of 20 MHz (min) with
a propagation delay of only 14 ns, which allows for extremely
fast data transmission. Output waveform symmetry is maintained
to within
±
1 ns of the input so the AD261 can be used to accu-
rately isolate time-based PWM signals.
All field or system output pins of the AD261 can be set to a high
resistance three-state level by use of the two enable pins. A field
output three-stated offers a convenient method of presetting
logic levels at power-up by use of pull-up/down resistors. Sys-
tem side outputs being three-stated allows for easy multiplexing
of multiple AD261s.
T he isolation barrier of the AD261 B Grade is 100% tested
as high as 3.5 kV rms (system to field). T he barrier design also
provides excellent common-mode transient immunity from
10 kV/
μ
s common-mode voltage excursions of field side termi-
nals relative to the system side, with no false output triggering
on either side.
Each output is updated within nanoseconds by input logic tran-
sitions, the AD261 also has a continuous output update feature
that automatically updates each output based on the dc level of
the input. T his guarantees the output is always valid 10
μ
s after
a fault condition or after the power-up reset interval.
PRODUCT HIGHLIGHT S
Six Isolated Logic Line I/O Configurations Available
:
T he
AD261 is available in six pin-compatible versions of I/O con-
figurations to meet a wide variety of requirements
.
Wide Bandwidth with Minimal Edge Error
: T he AD261
affords extremely fast isolation of logic signals due to its 20MHz
bandwidth and 14 ns propagation delay. It maintains a wave-
form input-to-output edge transition error of typically less than
±
1 ns (total) for positive vs. negative transition.
3.5 kV rms T est Voltage Isolation R ating
: T he AD261
B Grade is rated to operate at 1.25 kV rms and is 100% pro-
duction tested at 3.5 kV rms, using a standard ADI test method.
High T ransient Immunity
: T he AD261 rejects common-
mode transients slewing at up to 10 kV/
μ
s without false trigger-
ing or damage to the device.
(
Continued on pag
e 5)
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| AD261BND-5 | 功能描述:IC LOGIC ISO/3.5KV 5:0IO 22DIP RoHS:否 類別:隔離器 >> 數(shù)字隔離器 系列:IsoLogic™ 產(chǎn)品培訓(xùn)模塊:IsoLoop® Isolator 標(biāo)準(zhǔn)包裝:50 系列:IsoLoop® 輸入 - 1 側(cè)/2 側(cè):5/0 通道數(shù):5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:110Mbps 傳輸延遲:12ns 輸出類型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱:390-1053-5 |
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