IL260 [ETC]
High Speed Five Channel Digital Coupler; 高速五通道数字耦合器
| 型号： | IL260 |
| 厂家： | 
ETC |
| 描述： | High Speed Five Channel Digital Coupler |
| 文件： | 总7页 (文件大小：488K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
ISOLOOP
IL26X
Preliminary
High Speed Five Channel Digital Coupler
Features
Functional Diagram
· 5V CMOS/TTL Compatible
IL260
· High Speed: 110 MBaud
· 2500 VRMS Isolation (1 min)
1OUT
1IN
· 2 ns Typical Pulse Width Distortion
· 4 ns Typical Propagation Delay Skew
· 10 ns Typical Propagation Delay
· 30 kV/µs Typical Transient Immunity
· 2 ns Channel to Channel Skew
· 0.3'' and 0.15'' 16–Pin SOIC Packages
· Extended Temperature Range (-40°C to +85°C)
· UL1577 Approval Pending
2IN
3IN
2OUT
3OUT
4IN
5IN
4OUT
5OUT
· IEC 61010-1 Approval Pending
Isolation Applications
· ADCs and DACs
· Multiplexed Data Transmission
· Data Interfaces
IL261
· Board-To-Board Communication
· Digital Noise Reduction
· Operator Interface
1OUT
1IN
· Ground Loop Elimination
· Peripheral Interfaces
· Parallel Bus
2IN
3IN
2OUT
3OUT
· Logic Level Shifting
· Plasma Displays
4IN
4OUT
5IN
Description
5OUT
NVE's family of high-speed digital isolators are CMOS devices created
*
by integrating active circuitry and our GMR-based and patented
®
IsoLoop technology. The IL260 and IL261 are five channel versions of
the world's fastest digital isolator with a 110 Mbaud data rate. These
devices provide the designer with the most compact isolated logic
devices yet available. All transmit and receive channels operate at 110
Mbd over the full temperature and supply voltage range. The symmetric
magnetic coupling barrier provides a typical propagation delay of only
10 ns and a pulse width distortion of 2 ns achieving the best
specifications of any isolator device. Typical transient immunity of 30
kV/µs is unsurpassed. The IL260 has five transmit channels, while the
IL261 has four transmit channels and one receive channel. Their high
channel density make them ideally suited to isolating multiple ADCs
and DACs, parallel buses and peripheral interfaces.
Performance is specified over the temperature range of -40°C to +85°C
without any derating.
®
Isoloop is a registered trademark of NVE Corporation
* US Patent number 5,831,426; 6,300,617 and others.
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
®
ISOLOOP
Preliminary
IL26X
Storage Temperature
Ambient Operating Temperature
Supply Voltage
Input Voltage
Output Voltage
Output Current Drive Channel
Absolute Maximum Ratings
Parameters
Symbol
Min.
Max.
Units
o
TS
-55
175
C
C
(1)
o
TA
-55
-0.5
-0.5
-0.5
125
7
VDD+0.5
VDD+0.5
10
VDD1,VDD2
Volts
Volts
Volts
mA
VI
VO
IO
o
Lead Solder Temperature (10s)
ESD
280
C
2kV Human Body Model
Recommended Operating Conditions
Parameters
Symbol
Min.
-40
4.5
2.4
0
Max.
85
5.5
VDD
0.8
1
Units
C
Volts
Volts
Volts
µsec
o
Ambient Operating Temperature
Supply Voltage (5.0 V operation)
Logic High Input Voltage
Logic Low Input Voltage
TA
VDD1,VDD2
VIH
VIL
Minimum Signal Rise and Fall Times
tIR,tIF
Insulation Specifications
Parameter
Symbol
Min
Typ.
Max.
Units
Test Condition
14
Barrier Impedance
Creepage Distance (External)
>10 ||7
Ω || pF
8.077 (0.3'' SOIC)
4.026 (0.15'' SOIC)
mm
Leakage Current
0.2
µA
240 VRMS
Package Characteristics
Parameter
Symbol
CI-O
Min.
Typ.
Max.
Units
Test Conditions
(5)
Capacitance (Input-Output)
4.0
pF
f= 1MHz
o
θJCT
C/W
Thermal Resistance
Thermocouple located at
center underside of package
0.15'' 16-Pin SOIC
0.30'' 16-Pin SOIC
40
28
Package Power Dissipation
PPD
65
mW
f= 1MHz ,VDD=5V
IEC61010-1*
TUV Certificate Numbers: Pending
Classification as Table 1.
Model
Pollution Material Max Working
Package Type
Degree
Group
III
Voltage
300 VRMS
150 VRMS
16–SOIC (0.3'') 16–SOIC (0.15'')
IL260, IL261
IL260-3, IL261-3
II
II
9
III
9
UL 1577*
Component Recognition program. File # Pending
Rated 2500Vrms for 1min.
* UL & IEC approval is pending for the these parts.
2
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
®
ISOLOOP
Preliminary
IL26X
Electrical Specifications
Electrical Specifications are T
to T
min
max
Parameter
Symbol
5.0 Volt Specifications
Units
Test Conditions
DC Specifications
Min.
Typ.
Max.
Input Quiescent Supply Current
IL260
IDD
IDD
30
40
µA
mA
1
1
IL261
2.5
3.0
Output Quiescent Supply Current
IL260
IL261
IDD
IDD
II
10
8
15
12
mA
mA
µA
2
2
Logic Input Current
-10
10
Logic High Output Voltage
Logic Low Output Voltage
VOH
0.8*VDD
VDD-0.1
VDD-0.5
VDD
V
V
IO =-20 µA, VI =VIH
= -4 mA,
VI =VIH
IO
IO = 20 µA, VI =VIL
= 4 mA,
VOL
0
0.8
0.1
0.5
IO
VI =VIL
Switching Parameters
Maximum Data Rate
100
10
110
MBd
ns
CL = 15 pF
50% points, VO
Minimum Pulse Width
PW
Propagation Delay
tPHL
10
10
2
15
15
3
ns
ns
ns
= 15 pF
CL
Input to Output (High to Low)
Propagation Delay
tPLH
= 15 pF
CL
Input to Output (Low to High)
(2)
Pulse Width Distortion
| tPHL- tPLH |
PWD
= 15 pF
CL
(3)
Propagation Delay Skew
Output Rise Time (10-90%)
Output Fall Time (10-90%)
tPSK
tR
tF
4
1
1
6
3
3
ns
ns
ns
CL = 15 pF
CL = 15 pF
CL = 15 pF
Common Mode Transient
|CMH|
Immunity (Output Logic High
20
30
kV/µs
Vcm = 300V
(4)
or Logic Low)
|CML|
tCSK
= 15 pF
CL
per Channel
Channel to Channel Skew
2
170
3
210
ns
µA/mHz
6
Dynamic Power Consumption
Notes:
1. Absolute Maximum ambient operating temperature means the
device will not be damaged if operated under these conditions. It
does not guarantee performance.
2. PWD is defined as | tPHL– tPLH |. %PWD is equal to the PWD
divided by the pulse width.
3.
tPSK is equal to the magnitude of the worst case difference in tPHL
and/or tPLH that will be seen between units at 25OC.
4. CMH is the maximum common mode voltage slew rate that can be
sustained while maintaining VO > 0.8 VDD. CML is the maximum
common mode input voltage that can be sustained while
maintaining VO < 0.8 V. The common mode voltage slew rates
apply to both rising and falling common mode voltage edges.
5. Device is considered a two terminal device:
pins 1-8 shorted and pins 9-16 shorted.
6. Dynamic power consumption numbers are calculated per channel.
3
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
®
ISOLOOP
Preliminary
IL26X
Application Notes:
Dynamic Power Consumption
Data Transmission Rates
Isoloop devices achieve their low power consumption from the
The reliability of a transmission system is directly related to the
accuracy and quality of the transmitted digital information. For a
digital system, those parameters which determine the limits of the
data transmission are pulse width distortion and propagation delay
skew.
manner by which they transmit data across the isolation barrier. By
detecting the edge transitions of the input logic signal and
converting these to narrow current pulses, a magnetic field is
created around the GMR Wheatstone bridge. Depending on the
direction of the magnetic field, the bridge causes the output
comparator to switch following the input logic signal. Since the
current pulses are narrow, about 2.5ns wide, the power
consumption is independent of mark-to-space ratio and solely
dependent on frequency. This has obvious advantages over
optocouplers whose power consumption is heavily dependent on
its on-state and frequency.
Propagation delay is the time taken for the signal to travel through
the device. This is usually different when sending a low-to-high
than when sending a high-to-low signal. This difference, or error,
is called pulse width distortion (PWD) and is usually in ns. It may
also be expressed as a percentage:
Maximum Pulse Width Distortion (ns)
PWD% =
x 100%
Signal Pulse Width (ns)
The approximate power supply current per channel for
For example: For data rates of 12.5 Mb
3 ns
80 ns
PWD% =
x 100% = 3.75%
This figure is almost three times better than for any available
optocoupler with the same temperature range, and two times better
than any optocoupler regardless of published temperature range.
Power Supply Decoupling
®
The IsoLoop range of isolators will run at almost 35 Mb before
Both power supplies to these devices should be decoupled with
low ESR 100 nF ceramic capacitors. For data rates in excess of
10MBd, use of ground planes for both GND1 and GND2 is highly
recommended. Capacitors should be located as close as possible to
the device.
reaching the 10% limit.
Propagation delay skew is the difference in time taken for two or
more channels to propagate their signals. This becomes significant
when clocking is involved since it is undesirable for the clock
pulse to arrive before the data has settled. A short propagation
delay skew is therefore critical, especially in high data rate parallel
systems, to establish and maintain accuracy and repeatability. The
Signal Status on Start-up and Shut Down
To minimize power dissipation, the input signals are differentiated
and then latched on the output side of the isolation barrier to
reconstruct the signal. This could result in an ambiguous output
state depending on power up, shutdown and power loss
sequencing. Therefore, the designer should consider the inclusion
of an initialization signal in his start-up circuit. Initialization
consists of toggling each channel either high then low or low then
high, depending on the desired state.
®
IsoLoop range of isolators all have a maximum propagation delay
skew of 6 ns, which is five times better than any optocoupler. The
®
maximum channel to channel skew in the IsoLoop coupler is only
3 ns which is ten times better than any optocoupler.
Electrostatic Discharge Sensitivity
This product has been tested for electrostatic sensitivity to the
limits stated in the specifications. However, NVE recommends that
all integrated circuits be handled with appropriate care to avoid
damage. Damage caused by inappropriate handling or storage
could range from performance degradation to complete failure.
4
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
®
ISOLOOP
Preliminary
IL26X
Applications:
∆Σ
Figure 1 Single Channel
Bridge
Bias
Figure 1 shows a typical single channel ∆Σ ADC
application. The A/D is located on the bridge with no
signal conditioning electronics between the bridge sensor
and the ADC. In this application, the IL717 is the best
choice for isolation. It isolates the control bus from the
microcontroller. The system clock is located on the
isolated side of the system.
Delta Sigma A/D
CS5532
Bridge +
Bridge -
Isolation
Boundary
Serial Data Out
Iso SD Out
Serial Data In
Data Clock
Chip Select
Iso DS In
Iso Data Clock
Iso CS
Clock
Generator
IL717
OSC 2
Figure 2 Multi Channel ∆Σ
Bridge
Bias
The second ∆Σ application is where multiple ADC's are
configured in a channel-to-channel isolation configuration.
The problem for designers is how to control clock jitter
and edge placement accuracy of the system clock for each
ADC. The best solution is to use a single clock on the
system side and distribute this to each ADC. The IL261
adds a 5th channel to the IL717. This 5th channel is used
to distribute a single, isolated clock to multiple ADC's as
shown in Figure 2.
Delta Sigma A/D
CS5532
Bridge +
Isolation
Boundary
Bridge -
Serial Data Out
Serial Data In
Iso SD Out
Iso DS In
Clock
Generator
Iso Data Clock
Data Clock
Chip Select
Iso CS
IL261
Channel #1
OSC 2
Bridge
Bias
Delta Sigma A/D
CS5532
Bridge +
Bridge -
Serial Data Out
Serial Data In
Iso SD Out
Iso DS In
Channel #n
Iso Data Clock
Data Clock
Chip Select
Iso CS
IL261
OSC 2
5
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
®
ISOLOOP
Preliminary
IL26X
Pin Configurations IL260, IL261
Note: Connected Internally
Pins 2 & 8
Pins 9 & 15
IL260
IL261
5
5
5
5
Timing Diagram
Legend
tPLH
tPHL
tPW
tR
Propagation Delay, Low to High
Propagation Delay, High to Low
Minimum Pulse Width
Rise Time
tF
Fall Time
IR Soldering Profile
Recommended profile shown. Maximum
temperature allowed on any profile is 260° C.
6
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
®
ISOLOOP
Preliminary
IL26X
0.3'' SOIC-16 Package
0.15'' SOIC-16 Package
Valid Part Numbers
Ordering Information: use the following format to order these devices
IL 260 -3 B TR13
Bulk Package
Valid Part Numbers
Blank
TR7
=
=
=
Tube
IL 260B
IL 260-3B
IL 260BTR13
IL 260-3BTR13
IL 260-3BTR7
IL 261B
IL 261-3B
IL 261BTR13
IL 261-3BTR13
IL 261-3BTR7
7'' Tape and Reel
13'' Tape and Reel
TR13
Supply Voltage
B
=
5.0 VDC
Package
Blank
-3
=
=
SOIC (0.3'')
SOIC (0.15'')
Base Part Number
260
261
=
=
5 drive channels
4 drive and 1 receive channels
Product Family
IL Isolators
=
7
R H O P O IN T C O M P O N E N T S Hurst Green, Oxted, Surrey RH8 9AX UK Telephone: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Internet: www.rhopointcomponents.com
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