|
|
|
부품번호 | OL2068 기능 |
|
|
기능 | Industrial 30 Volt 4-Channel Differential Power Line Driver | ||
제조업체 | Optolab | ||
로고 | |||
전체 9 페이지수
OL2068
Industrial 30 Volt 4-Channel Differential Power Line Driver - Short Circuit Proof -
Applications
• Industrial encoder interfacing
• Industrial sensor interfacing
• Proximity switches
• Industrial controllers
• Light barriers
www.DataSheet4U.com
Features
· Ultra small package TSSOP 20
· Max. voltage range from 4,5 V – 36 V
· Short circuit proof tri-state outputs drive up to 120mA
sink / source
· Operating frequency up to 4 MHz
· Integrated voltage reg. with 5V output
· Dynamic peak current up to 1,5 Amp.
· High impedance CMOS / TTL compatible buffered
inputs with hysteresis
· Outputs RS422A compatible
Ultra small package TSSOP 20
Line voltage in
Voltage regulator
5V , 5mA out
General Description
CMOS / TTL
Data input
Differential
Output A
Output A-
The OL2068 is an industrial power line
driver and contains four identical short cir-
cuit proof differential line drivers up to 30
Volts driver supply with a joint enable func-
tion. An internal 5 V power supply is used
as reference and supply voltage for the
circuitry and is able to supply max. 5mA
for external 5V components like a sensor
or a constant current source for an LED.
The very small outline TSSOP package
gives excellent thermal power dissipation,
thus the usage in space limited applica-
tions is easy.
Tristate enable / disable
Thermal shutdown disable
CMOS / TTL
Data input
CMOS / TTL
Data input
CMOS / TTL
Data input
Differential
Output B
Output B-
Differential
Output C
Output C-
Differential
Output D
Output D-
Protection logic controller
- short circuit shut down
- Tristate and thermal logic control
- Undervoltage and power up reset
- Transient and EMI protection
Error signal out
For Stateside information contact...
Quantum Devices, Inc., 112 Orbison St., PO Box 100, Barneveld, WI, 53507
OL2068
Industrial 30 Volt 4-Channel Differential Power Line Driver - Short Circuit Proof -
Table 4 AC Characteristics (VCCD = 12.0 V, TA = 25 °C, Cable capacitance 1000pF, unless otherwise noted)
Paramter
Disable delay time
Enable delay time
Propagation delay from 50% point of
rising edge of input pulse to zero crossing
of differential outputs (see figure 1)
www.DataPShreoept4aUg.caotmion delay from 50% point of
falling edge of input pulse to zero crossing
of differential outputs (see figure 1)
Output rise time (see figure 2)
Output fall time (see figure 2)
Symbol
Condition
tO F F
tO N
t
PLH
t
PHL
tR15
tF 16
V = 5.0 V
CCD
VCCD = 12.0 V
VCCD = 24.0 V
CLOAD = 1000 pF
V = 5.0 V
CCD
VCCD = 12.0 V
VCCD = 24.0 V
C = 1000 pF
LOAD
VCCD = 5.0 V
VCCD = 12.0 V
VCCD = 24.0 V
C = 1000 pF
LOAD
VCCD = 5.0 V
VCCD = 12.0 V
V = 24.0 V
CCD
CLOAD = 1000 pF
Min
Typ
100
76
64
74
100
Max
200.0
600.0
200.0
200.0
330.0
Unit
ns
ns
ns
ns
ns
70
80
100
280.0
280.0
330.0
ns
ns
ns
42
110
120
200.0
350.0
380.0
ns
ns
ns
32 200.0 ns
62 350.0 ns
84 380.0 ns
VIH
Input
VIL
VTH+
VTH-
VOH
Output
90% 90%
VOL 10%
10%
Figure 2
tR
tF
Definition of Output Rise and Fall Time
VCCD
Figure 3
AC Test Circuit
Input
Output+
C = 1.000pF
L
1/4
OL2068
Output-
CC
LL
VIH
Input
VIL
VOH
Output
50%
tPLH
50%
50%
tPHL
50%
VOL
VOH
Output-
50% 50%
VOL
Figure 1 tPHL
tPLH
Timing diagram with typical asynchronous
propagation delays
15 Measured from 10% to 90% of the Output signal with a capacitive load on each output pin to ground (see Figure 3).
For Stateside information contact...
Quantum Devices, Inc., 112 Orbison St., PO Box 100, Barneveld, WI, 53507
4페이지 OL2068
Industrial 30 Volt 4-Channel Differential Power Line Driver - Short Circuit Proof -
Functional description
The main contents of this new CMOS power line driver are four identical blocks (systems A to D) with each a CMOS/TTL Schmitt Trigger Input and
high power differential buffered and inverted outputs.
With the low active ENABLE pin it is possible to switch off all eight outputs (high-impedance state), thus this driver can be used in industrial bus
systems.
In some rare applications it might be useful to disable the over temperature shutdown. This can be done by setting the ENABLE pin to a level
between >7,5 V and <12 V. In this case the whole protection of the IC is disabled ! In case of any short circuits or thermal overdrive, the driver might
be destroyed !
An internal ultra low drop voltage regulator with typical 5.0 V supplies the internal logic to reduce power dissipation. Some applications require
additional 5V ( i.e. for an LED driver in an optical encoder). This voltage can be sourced out of the line driver internal voltage regulator ( 5mA max.).
The over-temperature protection block is placed in the center of the chip. The thermal shutdown will be activated, when a overload condition (i.e.
www.DasthaoSrhteceitr4cUui.ct)ohmas exceeded the over-temperature detection threshold.
In this case automatically all output drivers are switched off and (ET2068) an error signal is activated on a monitor pin. After the chip has cooled
down ( a few milliseconds ) it automatically re-activates all functions and switches the MON output high again. In case the short circuit is still
present, it switches off again and the same cycle starts from the beginning.
By using this line driver, the field returns of systems, which are accidentally shorted and blown by the end users, are dramatically reduced.
Power supply
The internal power supply is designed as a voltage regulator with a typical output voltage V = 5.0 V. The minimal voltage drop across the regulator
CCI
transistors could not be lower than 0.3 V. In order to decouple V it has to be connected to an external capacitor of 100nF.
CCI
The V pin could be used as a reference voltage for LED drivers or is able to supply other external devices like sensors at a maximum current of
CCI
I = 5.0 mA. Please keep in mind, that by using this voltage regulator it will generate additional power dissipation = heat.
CCIE
Under-voltage reset
If the system is switched on, the status of the line driver is, for a few microseconds, undefined. The same happens, if heavy power supply failures
occur. To avoid wrong data transmitted, there is a supply voltage watchdog implemented.
The under-voltage reset block contains a comparator. The voltage V will be always compared with a reference voltage, provided by an internal
CCI
bandgap cell.
If after a filter time (t LVR ~ 5 s) V drops below the typical voltage threshold of 3.5 V the output signal of this block switches off all output drivers
FIL CCI
to the high-impedance state until minimum 3.6 V are reappearing. In case of such a system fault also the output MON generates an error signal. This
(inverted) signal can also be used as a "system ready" signal.
ESD / EMI
The chip is an ESD sensitive device and should be handled according to guideline EN100015 / part 1 (“The Protection of ESD Sensitive Devices”).
All pins are ESD protected according to ESD standard MIL883, method 3015.7 (human body model). Unused Inputs should be connected to GND,
as well as the pin ENABLE in case this function is not used. This will reduce the quiescent supply current.
Heatlink
For higher power dissipation, the part can be ordered with an added heatlink underneath the IC. This non conductive heatlink automatically gives an
excellent thermal contact to the PCB, thus the driving capability can be upgraded up to 20% more driving current. No specific user assembly routines
required - just solder the IC to your PCB and the heatlink is automatically making contact with the circuit board.
Life support clause
The schematics and in general the linedrivers are not intended for use in life support appliances, critical components or systems without the express
written consent of Optolab Microsystems GmbH. As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and
whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure
of the life support device or system, or to affect its safety or effectiveness.
For Stateside information contact...
Quantum Devices, Inc., 112 Orbison St., PO Box 100, Barneveld, WI, 53507
7페이지 | |||
구 성 | 총 9 페이지수 | ||
다운로드 | [ OL2068.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
OL2068 | Industrial 30 Volt 4-Channel Differential Power Line Driver | Optolab |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |