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| Product
News |
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| IL515
Expands IL500 Line
 The
IsoLoop IL500
Isolator family has a new member, the IL515.
The four-channel part has an output enable and an
external clocking option. It is an ideal alternative
to optocouplers in a number of applications including
isolated D/A converters.
Compared
to NVE’s industry-standard IL700-Series
isolators, which have speeds up to 150 Mbps,
IL500-Series isolators operate at two Mbps, offer
a DC-correct design, and have an external clocking
option on some models.
A patented, controllable refresh clock ensures that
outputs will be synchronized to inputs within 9 µs.
Alternatively, on models such as the IL515, the user
can supply an external synchronization clock.
Priced at $0.53 per channel in 1,000-piece quantities,
the IL515 is NVE's most cost-effective isolator.
A number of IL500-Series isolators are currently in
stock and available for immediate delivery.
Key IL500-Series isolator features include:
-
2 Mbps; 10 ns PWD
- DC
Correct
- External
Clock Option (IL510; IL515)
- Output
Enable (IL510; IL514; IL515)
- 1,
2, 3, or 4 Channels
- -40°C
to 85°C Temp. Range
- 2.5
kVrms Isolation (1 min.)
- UL1577
Approval
- IEC
61010-2001 Pending
 MSOP
and SOIC Packages
<IL500-Series
Selector Guide>
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| Application
Corner |
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12-Bit
DAC Isolation
By
Sandy Templeton
Director, Isolator Product Development and Applications
The IL515 is a four-channel digital isolator ideally
suited for parallel bus isolation. Though not as fast
as the IL715, The IL515 has an internal clock that provides
input data refresh pulses. The clock gives the device
DC-correct inputs, meaning device outputs will never
be out of sync with device inputs for longer than the
pulse width of the clock. That's especially useful in
applications where device outputs must be the same as
device inputs at power up.
The circuit above uses three IL515s to isolate a 12-bit
DAC. The unique SYNC function allows the internal clock
to be shut off, eliminating the small amount of noise
associated with this clock. A reset pulse is applied
at power-on to ensure correct data on the isolator outputs.
After the reset pulse goes high, data transfer from
input to output is initiated by the leading edge of
each changing data bit.
<More
Isolator Applications>
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| Isolator
Part Numbering |
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The
IsoLoop part numbering system is really quite straightforward
once you get to know it, as summarized below:
IL
7
11
T
- 3 E
TR7
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Base
Part Number
2 = 5-Channel Digital Input
4 = Industry-Standard Xcvr
5 = 2 Mbps, DC-Correct
6 = Passive Input
7 = High Speed, Digital Input
31 = Passive-In, 5 Mbps Xcvr
32 = Passive-In, 1/8-Load Xcvr
34 = Passive-In, 20 Mbps Xcvr
35 = Digital-In, 40 Mbps Xcvr
36 = PROFIBUS Transceiver |
Channel
Config.
10 = 1 Channel
11 = 2 Transmit
12 = 1 Xmit; 1 Rcv
13 = 3 Transmit
14 = 2 Xmit; 1 Rcv
15 = 4 Transmit
16 = 2 Xmit; 2 Rcv
17 = 3 Xmit; 1 Rcv
22 = RS-422
60 = 5 Transmit
61 = 4 Xmit; 1 Rcv
62 = 3 Xmit; 2 Rcv
85 = RS-485
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Variant
Blank = Standard
A = Open Drain Output
S = 150 Mbps
T = 125°C
W = RS-485 Handshake |
Package
Size
1 = MSOP
2 = PDIP
3 = 0.15'' SOIC
5 = Bare die
Blank = 0.30'' SOIC
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Package Material
Blank = Lead (Pb)
E = RoHS |
Bulk
Packaging
Blank = Tube
TR7 = 7'' Tape & Reel
TR13 = 13'' T & R |
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