HFBR-1604 - Agilent / Hewlett-Packard

SERCOS Fiber Optic

Transmitters and Receiver

Technical Data

HFBR-0600 Series

Features

• Fully Compliant to SERCOS

Optical Specifications

• Optimized for 1 mm Plastic

Optical Fiber

• Compatible with SMA

Connectors

• Auto-Insertable and Wave

Solderable

• Data Transmission at

Symbol Rates from DC to

over 2 MBd for Distances

from 0 to over 20 Metres

Applications

• Industrial Control Data

Links

• Reduction of Lightning and

Voltage Transient Suscepti-

bility

• Tempest-Secure Data

Processing Equipment

• Isolation in Test and

Measurement Instruments

• Robotics Communication

SERCOS

SERCOS is a SErial Realtime

COmmunication System, a

standard digital interface for

communication between controls

and drives for numerically

controlled machines. The SERCOS

interface specification was written

by a joint working group of the

VDW (German Machine Tool

Builders Association) and ZVEI

(German Electrical and Electronic

Manufacturer’s Association) to

allow data exchange between NC

controls and drives via fiber optic

rings, with isolation and noise

immunity. The HFBR-0600 family

of fiber optic transmitters and

receivers comply to the SERCOS

specifications for transmitter and

receiver optical characteristics

and connector style (SMA).

Description

The HFBR-0600 components are

capable of operation at symbol

rates from DC to over 2 MBd and

distances from 0 to over 20

metres. The HFBR-1602 and

HFBR-1604 transmitters contain

a 655-nm AlGaAs emitter capable

of efficiently launching optical

power into 1000 µm plastic

optical fiber. The optical output is

specified at the end of 0.5 m of

plastic optical fiber.

The HFBR-1604 is a selected

version of the HFBR-1602, with

power specified to meet the

SERCOS high attenuation

specifications.

The HFBR-2602 receiver incor-

porates an integrated photo IC

containing a photodetector and dc

amplifier driving an open-

collector Schottky output

transistor. The HFBR-2602 is

designed for direct interfacing to

popular logic families. The

absence of an internal pull-up

resistor allows the open-collector

output to be used with logic

families such as CMOS requiring

voltage excursions higher than

VCC. The HFBR-2602 has a

dynamic range of 15 dB.

CAUTION: The small junction sizes inherent to the design of this component increase the component's

susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be

taken in handling and assembly of this component to prevent damage and/or degradation which may be

induced by ESD.

In the receiver, both the open-

collector “Data” output Pin 6 and

VCC Pin 2 are referenced to

“Common” Pin 3 and 7. It is

essential that a bypass capacitor

(0.1 µF ceramic) be connected

from Pin 2 (VCC) to Pin 3 (circuit

common) of the receiver.

*Pins 1, 4, 5, and 8 are isolated from the internal circuitry, but electrically connected to

one another.

**Transmitter Pin 7 may be left unconnected if necessary.

HFBR-0600 SMA Series

Mechanical Dimensions

HFBR-2602 ReceiverHFBR-160X Transmitters

SMA is an industry standard fiber

optic connector, available from

many fiber optic connector

suppliers. HFBR-4401 is a kit

consisting of 100 nuts and 100

washers for panel mounting the

HFBR-0600 components.

22.2

(0.87)

12.7

(0.50)

1/4 - 36 UNS 2A

THREAD

YYWW



HFBR-X60X

PART NUMBER

DATE CODE

HFBR-1602/1604 Transmitters

Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Reference

Storage Temperature TS-55 85 °C

Operating Temperature TA-40 85 °C

Lead Soldering Cycle Temp. 260 °C Note 1

Time 10 s Note 1

Forward Input Current Peak IFPK 120 mA

Forward Input Current Average IFavg 60 mA

Reverse Input Voltage VBR -5 V

Electrical/Optical Characteristics 0 to 55°C, unless otherwise stated

Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference

Forward Voltage VF1.5 1.9 2.2 V IF = 35 mA

Forward Voltage ∆VF/∆T -1.2 mV/°CI

= 35 mA

Temp. Coefficient

Reverse Input Voltage VBR -5.0 -18 V IR = 100 µA

Peak Emission λP640 655 675 nm

Wavelength

Full Width Half FWHM 20 30 nm 25°C

Maximum

Diode Capacitance CT30 pF VF = 0

f = 1 MHz

Optical Power Temp. ∆PT/∆T - 0.01 dBm/°CI

= 35 mA

Coefficient

Thermal Resistance θJA 330 °C/W  Notes 3, 4

Peak Optical Output PT1602 -10.5  -5.5 dBm I F = 35 mA Notes 5, 6,

Power of HFBR-1602 11

Peak Optical Output PT1604 -7.5 -3.5 dBm IF = 60 mA Notes 5, 6,

Power of HFBR-1604 -10.5 -5.5 dBm IF = 35 mA 11

Rise Time (10% to 90%) tr57 ns IF = 60 mA

50 ns IF = 35 mA

Fall Time (90% to 10%) tf40 ns IF = 60 mA

27 ns IF = 35 mA

HFBR-2602 Receiver

Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Reference

Storage Temperature TS-55 85 °C

Operating Temperature TA-40 85 °C

Lead Soldering Cycle Temp. 260 °C Note 1

Time 10 s Note 1

Supply Voltage VCC -0.5 7.0 V

Output Current IO25 mA

Output Voltage VO-0.5 18.0 V

Output Collector Power Dissipation PO AVG 40 mW

Fan Out (TTL) N 5 Note 8

Electrical/Optical Characteristics 0 to 55°C;

Fiber core diameter ≤ 1.0 mm, fiber N.A. ≤ 0.5, 4.75 V ≤ VCC ≤ 5.25 V

Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference

High Level Output IOH 5 250 µAV

OH = 18 V

Current PR < -31.2 dBm

Low Level Output VOL 0.4 0.5 V IOL = 8 mA

Voltage PR > -20.0 dBm

High Level Supply ICCH 3.5 6.3 mA VCC = 5.25 V

Current PR < -31.2 dBm

Low Level Supply ICCL 6.2 10 mA VCC = 5.25 V

Current PR > -20.0 dBm

Dynamic Characteristics 0 to 55°C unless otherwise specified; 4.75 V ≤ VCC ≤ 5.25 V; BER ≤ 10-9

Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference

Peak Input Power PRH -31.2 dBm λP = 655 nm Note 7

Level Logic HIGH

Peak Input Power PRL -20.0 -5.0 dBm IOL = 8 mA Note 7

Level Logic LOW

Propagation Delay tPLH 60 ns PR = -20 dBm Note 8, 9

LOW to HIGH 2 MBd

Propagation Delay tPHL 110 ns PR = -20 dBm Note 8, 9

HIGH to LOW 2 MBd

Pulse Width PWD 50 ns PR = -5 dBm Note 10

Distortion, Figure 6

tPLH - tPHL -50 ns PR = -20 dBm

Notes:

1. 2.0 mm from where leads enter case.

2. Typical data at TA = 25°C.

3. Thermal resistance is measured with

the transmitter coupled to a connector

assembly and fiber, and mounted on a

printed circuit board.

4. Pins 2, 6, and 7 are welded to the

cathode header connection to minimize

the thermal resistance from junction to

ambient. To further reduce the thermal

resistance, the cathode trace should be

made as large as is consistent with

good RF circuit design.

5. PT is measured with a large area

detector at the end of 0.5 metre of

plastic optical fiber with 1 mm

diameter and numerical aperture of

0.5.

6. When changing µW to dBm, the optical

power is referenced to 1 mW (1000

µW). Optical Power P(dBm) = 10 log

[P (µW)/1000 µW].

7. Measured at the end of 1mm plastic

fiber optic cable with a large area

detector.

8. 8 mA load (5 x 1.6 mA), RL = 560 Ω.

9. Propagation delay through the system

is the result of several sequentially

occurring phenomena. Consequently it

is a combination of data-rate-limiting

effects and of transmission-time

effects. Because of this, the data-rate

limit of the system must be described

in terms of time differentials between

delays imposed on falling and rising

edges. As the cable length is increased,

the propagation delays increase. Data-

rate, as limited by pulse width distor-

tion, is not affected by increasing cable

length if the optical power level at the

receiver is maintained.

10. Pulse width distortion is the difference

between the delay of the rising and

falling edges.

11. Both HFBR-1602 and HFBR-1604

meet the SERCOS "low attenuation"

specifications when operated at 35 mA;

only HFBR-1604 meets the SERCOS

"high attenuation" limits when operated

at 60 mA.

Figure 1. Forward Voltage and

Current Characteristics. Figure 2. Typical Transmitter Output

vs. Forward Current. Figure 3. Transmitter Spectrum

Normalized to the Peak at 25°C.

Figure 4. Typical Propagation Delay through

System with 0.5 Metre of Cable. Figure 5. Typical HFBR-160X/2602 Link

Pulsewidth Distortion vs Optical Power.

For technical assistance or the location of

your nearest Hewlett-Packard sales office,

distributor or representative call:

Americas/Canada: 1-800-235-0312 or

408-654-8675

Far East/Australasia: Call your local HP

sales office.

Japan: (81 3) 3335-8152

Europe: Call your local HP sales office.

Data subject to change.

Printed in U.S.A. 5091-1462E (1/97)

Figure 6. System Propagation Delay Test Circuit and Waveform Timing Definitions.