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L292;中文规格书,Datasheet资料

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) s ( t c u d o ) r s ( P t c e t u e d l o o r s P b e O t e l ) o s ( s t b c u O d o ) r s P ( t c e t u e l d o o r s P b O e t e l o s b O
Vi Rs1 = Rs2 = 0.2Ω Io = 2A Io = -2A 9.1 -9.1 Io Output Current VI = ±9.8V s1 = Rs2 = 0.2Ω ±2 A VD Total Drop Out Voltage Including sensor resistor Io = 2A Io = 1A Tj = 150°C Io = 2A Rs1 = Rs2 = 0.2Ω 5 3.5 V V VRS Io ---Vi Sensing Resistor Voltage Drop Transconductance 0.44 235 V 205 220 Rs1 = Rs2 = 0.42Ω 120 fosc Frequency range (pin 10) 1 30
DESCRIPTION
The L292 is a monolithic LSI circuit in 15-lead Multiwatt ® package. It is intended for use, together with L290 and L291, as a complete 3-chip motor positioning system for applications such as carriage/daisy-wheel position control in type-writes.
H H
2/13
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L292
ELECTRICAL CHARACTERISTCS
Symbol VS Id Vos Vinh Iinh Ii Parameter Supply Voltage Quiescent Drain Current Input Offset Voltage (pin 6) Inhibit Low Level (pin 12, 13) Inhibit High Level Low Voltage Condition High Voltage Condition Input Current (pin 6) Input Voltage (pin 6) Vinh(L) = 0.4V Vinh(H) = 3.2V VI = -8.8V VI = +8.8V 3.2 -100 10 -1.8 0.5 VS = 20V (offset null) Io = 0 Test Condition Min. 18 30 Typ. Max. 36 50 +350 2 Unit V mA mV V V µA µA mA mA V V
Symbol Vs Vi Io Power Supply Input Voltage Parameter Value 36 V - 15 to + Vs 0 to Vs 2.5 25 V Vinhibit Ptot Inhibit Voltage V Output Current A Total Power Dissipation (Tcase = 75 °C) Storage and Junction Temperature W Tstg - 40 to + 150 °C
Unit
THERMAL DATA
Symbol Rth-j-case
Parameter
Value 3
Unit
Thermal resistance junction-case
Max
°C/W
TRUTH TABLE
Vinhibit
Pin 12 L L
Pin 13 L H L H
Output Stage Condition Disabled Normal Operation Disabled Disabled
ORDERING NUMBER: L292
The L290/1/2 system can be directly controlled by a microprocessor.
BLOCK DIAGRAM
July 2003
1/13
/
L292
PIN CONNECTION (Top view)
MULTIWATT15 V
DRIVING CAPABILITY : 2 A, 36 V, 30 KHz 2 LOGIC CHIP ENABLE EXTERNAL LOOP GAIN ADJUSTEMENT SINGLE POWER SUPPLY (18 TO 36 V) INPUT SIGNAL SYMMETRIC TO GROUND THERMAL PROTECTION
3/13
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L292
The system operates in two modes to achieve high speed, high-accurancy positioning. Speed commands for the system originate in the microprocessor. It is continuosly updated on the motor position by means of pulses from the L290 tachometer chip, whitch in tur gets its information from the optical encoder. From this basic input, the microprocessor computes a 5-bit control word that sets the system speed dependent on the distance to travel. When the motor is stopped and the microprocessor orders it to a new positio, the system operates initially in an open-loop configuration as there is no feedback from the tachometer generator. A maximum speed is reached, the tachometer chip output backs off the processor signal thus reducing accel-ering torque. The motor continues to run at rop speed but under closed-loop control. As the target position is approached, the microprocessor lowers the value of the speed-demand word; this reduces the voltage at the main summing point, in effect braking the motor. The braking is applied progressively until the motor is running at minimum speed. optical encoder which generates two sinusoidal signals 90° out of phase (leading according to the motor direction) and proportional in frequency to the speed of rotation. The optical encoder also provides an output at one position on the disk which is used to set the initial position. The opto encoder signals, FTA and FTB are filtered by the networks R2C2 and R3 C3 (referring to Fig.4) and are supplied to the FTA/FTB inputs on the L290. The main function on the L290 is to implement the following expression: dV AB FTA dV AA FTB - – -------------- ⋅ -------------Output signal (TACHO) = -------------- ⋅ -------------dt dt FTB FTA
) s ( t c u d o ) r s ( P t c e t u e d l o o r s P b e O t e l ) o s ( s t b c u O d o ) r s P ( t c e t u e l d o o r s P b O e t e l o s b O
ABSOLUTE MAXIMUM RATINGS
Output signal (TACHO) = dVAB · FTA - dVAA · FTBdt | FTA | dt | FTB | Thus the mean value of TACHO is proportional to the rotation speed and its polarity indicates the direction of rotation. The above function is performed by amplifying the input signals in A1 and A2 to obtain VAA and VAB (typ.7 Vp). From VAA and VAB the external differen-tiatior RC networks R 5 C6 and R4 C4 give the signals VMA and VMB which are fed to the multipliers.

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SN74LS292中文资料

SN74LS292中文资料

Copyright © 1988, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.POST OFFICE BOX 655303 • DALLAS, TEXAS 752652POST OFFICE BOX 655303 • DALLAS, TEXAS 75265POST OFFICE BOX 655303 • DALLAS, TEXAS 752654POST OFFICE BOX 655303 • DALLAS, TEXAS 752655 POST OFFICE BOX 655303 • DALLAS, TEXAS 752656POST OFFICE BOX 655303 • DALLAS, TEXAS 75265POST OFFICE BOX 655303 • DALLAS, TEXAS 75265元器件交易网IMPORTANT NOTICETexas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinueany product or service without notice, and advise customers to obtain the latest version of relevant informationto verify, before placing orders, that information being relied on is current and complete. All products are soldsubject to the terms and conditions of sale supplied at the time of order acknowledgement, including thosepertaining to warranty, patent infringement, and limitation of liability.TI warrants performance of its semiconductor products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extentTI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarilyperformed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OFDEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICALAPPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, ORWARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHERCRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TOBE FULLY AT THE CUSTOMER’S RISK.In order to minimize risks associated with the customer’s applications, adequate design and operatingsafeguards must be provided by the customer to minimize inherent or procedural hazards.TI assumes no liability for applications assistance or customer product design. TI does not warrant or representthat any license, either express or implied, is granted under any patent right, copyright, mask work right, or otherintellectual property right of TI covering or relating to any combination, machine, or process in which suchsemiconductor products or services might be or are used. TI’s publication of information regarding any thirdparty’s products or services does not constitute TI’s approval, warranty or endorsement thereof.Copyright © 1999, Texas Instruments Incorporated。

FTLF8519F2GTL, 规格书,Datasheet 资料

FTLF8519F2GTL, 规格书,Datasheet 资料


Finisar Corporation October 6, 2005 Rev B
Page 1
芯天下--/
FTLF8519F2xTL 2x5 Pin SFF Product Specification – October 2005
I.
Pin Descriptions
Product Specification
2.125 Gb/s RoHS Compliant Short Wavelength 2x5 SFF Transceiver
FTLF8519F2xTL
PRODUCT FEATURES Up to 2.125 Gb/s bi-directional data links Standard 2x5 pin SFF footprint (MSA compliant) 850nm Oxide VCSEL laser transmitter Duplex LC connector RoHS compliant and Lead Free Up to 500m on 50/125µm MMF, 300m on 62.5/125µm MMF Metal enclosure, for lower EMI Single 3.3V power supply Low power dissipation <750mW Industrial operating temperature range: -40°C to 85°C Finisar’s FTLF8519F2xTL Small Form Factor (SFF) transceivers comply with the 2x5 standard package defined by the Small Form Factor Multi-Sourcing Agreement (MSA)1. They are simultaneously compatible with Gigabit Ethernet as specified in IEEE Std 802.32 and Fibre Channel FC- PI-2 Rev. 7.03. They are RoHS compliant and lead-free per Directive 2002/95/EC4 and Finisar Application Note AN-2038. PRODUCT SELECTION APPLICATIONS 1.25 Gb/s 1000Base-SX Ethernet Dual Rate 1.063/2.125 Gb/s Fibre Channel
L295;中文规格书,Datasheet资料

L295;中文规格书,Datasheet资料

V –R1t I = ------- 1 – e -----------R1 L1
where: R1 and R2 are the resistance and inductance of the load and V is the voltage available on the load (Vs Vdrop - Vsense). The current increases until the voltage on the external sensing resistor, RS1, reaches the reference voltage, Vref1. This peak current, Ip1, is given by: V
15
VREF2
October 2003
1/7
/
L295
ABSOLUTE MAXIMUM RATINGS
Symbol VS VSS VEN, Vi Vref Io Supply voltage Logic supply voltage Enable and input voltage Reference voltage Peak output current (each channel) - non repetitive (t = 100 µsec) - repetitive (80% on - 20% off; Ton = 10ms) - DC operation Total power dissipation (at Tcase = 75 ″C Storage and junction temperature Parameter Value 50 12 7 7 3 2.5 2 25 - 40 to 150 Unit V V V V A A A W °C
BYW29-200G;中文规格书,Datasheet资料

BYW29-200G;中文规格书,Datasheet资料

D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT T1 TJ(pk) - TC = P(pk) ZqJC(t)
0.5 1.0 2.0
5.0 10
20
t, TIME (ms)
Figure 6. Thermal Response
50 100 200

ULTRAFAST RECTIFIERS 8.0 AMPERES 200 VOLTS
1 4
3
MARKING
4
DIAGRAM
1 3
CASE 221B TO−220B PLASTIC
AY WWG BYW29-200
KA
A Y WW BYW80−200 G KA
= Assembly Location = Year = Work Week = Device Code = Pb−Free Package = Diode Polarity
2
IF(AV), AVERAGE FORWARD CURRENT (AMPS)
r(t), TRANSIENT THERMAL RESISTANCE (NORMALIZED)
BYW29−200
PF(AV), AVERAGE POWER DISSIPATION (WATTS)
*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.