INFINEON V23818-K15-Lxx User Manual

Fiber Optics

Small Form Factor
Single Mode 1300 nm 1.0625 Gbit/s Fibre Channel

1.25 Gigabit Ethernet Transceiver
2x5/2x10 Pinning with LC™ Connector

Preliminary Data

Features

• Small Form Factor transceiver

• Complies with Fibre Channel and Gigabit Ethernet
standards

• RJ-45 style LC™ connector system

• Available with or without collar

• Half the size of SC Duplex 1x9 transceiver

• Single power supply (3.3 V)

• Low power consumption, 650 mW typical

• Loss of optical signal indicator

V23818-K15-Lxx

File: 1119

• Laser disable input

• LVPECL differential inputs and outputs

• AC/AC coupling in accordance to SFF MSA or optional
DC/DC coupling version

• For distance of up to 10 km on single mode fiber
(SMF)

• Class 1 FDA and IEC laser safety compliant

• Multisource 2x5/2x10 footprint

1)

• Small size for high port density

• UL 94 V-0 certified

• Compliant with FCC (Class B) and EN 55022

• Tx and Rx power monitor on 2x10 pinning version

File: 1120

1)

Current MSA documentation can be found at www.infineon.com/fiberoptics

For ordering information see next page.
LC™ is a trademark of Lucent.

Data Sheet 1 2003-03-21

V23818-K15-Lxx

Ordering Information

Ordering Information
Part Number Pinning Temperature

Range

Signal
Detect

Collar Input Output

V23818-K15-L37 2x5 0°C to 70°C LVPECL yes DC DC
V23818-K15-L36 –40°C to 85°C
V23818-K15-L47 0°C to 70°C LVTTL AC AC
V23818-K15-L46 –40°C to 85°C
V23818-K15-L17 2x10 0°C to 70°C LVPECL DC DC
V23818-K15-L16 –40°C to 85°C
V23818-K15-L57 0°C to 70°C LVTTL AC AC
V23818-K15-L56 –40°C to 85°C
V23818-K15-L35 2x5 0°C to 70°C LVPECL no DC DC
V23818-K15-L45 LVTTL AC AC

Data Sheet 2 2003-03-21

V23818-K15-Lxx

Pin Configuration

Pin Configuration

Tx

Rx

MS

MS

HL

TOP VIEW

12345

HL

1617181920

678910

HL

1112131415

HL

File: 1335

Figure 1 2x10 Pin Connect Diagram

2x10 Pin Description
Pin

Symbol Level/Logic Description

No.

1 PDBias DC current PIN photo detector bias current
2
3

V
V

EEr

EEr

Ground Receiver signal ground

Ground Receiver signal ground
4 NC Not connected
5 NC Not connected
6
7

V
V

EEr

CCr

8 SD LVTTL or LVPECL output

Ground Receiver signal ground

Power supply Receiver power supply

1)

Receiver optical input level monitor
9 RD– LVPECL output Receiver data out bar
10 RD+ LVPECL output Receiver data out
11
12

V
V

CCt

EEt

Power supply Transmitter power supply

Ground Transmitter signal ground
13 TDis LVTTL input Transmitter disable
14 TD+ LVPECL input Transmitter data in
15 TD– LVPECL input Transmitter data in bar
16

V

EEt

Ground Transmitter signal ground
17 BMon– DC voltage Laser diode bias current monitor
18 BMon+ DC voltage Laser diode bias current monitor
19 PMon– DC voltage Laser diode optical power monitor
20 PMon+ DC voltage Laser diode optical power monitor
MS Mounting studs
HL Housing leads

1)

LVPECL output active high for V23818-K15-L17/L16.
LVTTL output active high for V23818-K15-L57/L56.

Data Sheet 3 2003-03-21

V23818-K15-Lxx

Tx

Rx

MS

MS

HL

TOP VIEW

HL

Figure 2 2x5 Pin Connect Diagram

2x5 Pin Description
Pin

Symbol Level/Logic Description

No.

1
2

V
V

EEr

CCr

Ground Receiver signal ground

Power supply Receiver power supply
3 SD LVTTL or LVPECL output

Pin Configuration

HL

678910

12345

1)

Receiver optical input level monitor

HL

File: 1331

4 RD– LVPECL output Receiver data out bar
5 RD+ LVPECL output Receiver data out
6
7

V
V

CCt

EEt

Power supply Transmitter power supply

Ground Transmitter signal ground
8 TDis LVTTL input Transmitter disable
9 TD+ LVPECL input Transmitter data in
10 TD– LVPECL input Transmitter data in bar
MS Mounting studs
HL Housing leads

1)

LVPECL output active high for V23818-K15-L37/L36/L35.
LVTTL output active high for V23818-K15-L47/L46/L45.

V

/ V

EEr

EEt

For 2x10 transceivers, connect pins 2, 3, 6, 12 and 16 to signal ground. For 2x5
transceivers, connect pins 1 and 7 to signal ground.

Data Sheet 4 2003-03-21

V23818-K15-Lxx

V

CCr

/ V

CCt

Pin Configuration

For 2x10 transceivers a 3.3 V DC power supply must be applied at pins 7 and 11. For
2x5 transceivers a 3.3 V

DC power supply must be applied at pins 2 and 6. A

recommended power supply filter network is given in the termination scheme. Locate
power supply filtering directly at the transceiver power supply pins. Proper power supply
filtering is essential for good EMI performance.

TD+ / TD–

Transmitter data LVPECL level inputs. For V23818-K15-L47/L46/L57/L56/L45
terminated and AC coupled internally. For V23818-K15-L37/L36/L17/L16/L35 use
termination and coupling as shown in the termination scheme.

RD– / RD+

Receiver data LVPECL level outputs. For V23818-K15-L47/L46/L57/L56/L45 biased and
AC coupled internally. For V23818-K15-L37/L36/L17/L16/L35 use termination and
coupling as shown in the termination scheme.

TDis

A logical LVTTL high input will disable the laser. To enable the laser, an LVTTL low input
must be applied. Leave pin unconnected if feature not required.

SD

LVTTL output for V23818-K15-L47/L46/L57/L56/L45.
LVPECL output for V23818-K15-L37/L36/L17/L16/L35.
A logical high output indicates normal optical input levels to the receiver. Low optical
input levels at the receiver result in a low output. Signal Detect can be used to determine
a definite optical link failure; break in fiber, unplugging of a connector, faulty laser source.
However it is not a detection of a bad link due to data-related errors.

MS

Mounting studs are provided for transceiver mechanical attachment to the circuit board.
They also provide an optional connection of the transceiver to the equipment chassis
ground. The holes in the circuit board must be tied to chassis ground.

HL

Housing leads are provided for additional signal grounding. The holes in the circuit board
must be included and tied to signal ground.

Data Sheet 5 2003-03-21

V23818-K15-Lxx

Pin Configuration

2x10 Transceiver Additional Functionality

PDBias

Connect pin 1 to

V

through a bias resistor, of a value not exceeding 2 kΩ, as shown in

CC

Figure 3 to monitor PIN photo detector bias current. Leave pin floating if not used.

Typical behaviour is shown in Figure 4 and Figure 5 using a 2 kΩ load.

V

CC

≤ 2 kΩ

Pin 1

V

bias

File: 1307

Figure 3 Photo Detector Bias Interface

Data Sheet 6 2003-03-21

V23818-K15-Lxx

Pin Configuration

Typical Responsitivity of PIN Photo Detector Bias Current Monitor

400

300

200

100

Photo Detector Monitor Current (µA)

0

0 100 200 300 400

Received Optical Power (µW)

File: 1308

Figure 4 Linear Response

400

300

200

100

Photo Detector Monitor Current (µA)

0

−30 −24 −18 −12 −60

Received Optical Power (dBm)

File: 1309

Figure 5 Logarithmic Response

Data Sheet 7 2003-03-21

V23818-K15-Lxx

0

0.04

0.08

0.12

0.16

0.2

0.24

0.28

0.32

0.36

010203040506070

Temperature (˚C)

BMon Output Voltage (V)

Pin Configuration

BMon– / BMon+

The DC voltage measured across pins 17 and 18 is proportional to the laser bias current.
Use the equation:

I

bias

= V

bias

/10 Ω

Use this output to monitor laser performance and EOL conditions. A schematic and
typical behaviour are shown in Figure 6 and Figure 7.

I

@ ambient 25°C < 60 mA.

bias

Leave pins floating if function is not required.

V

CC

10 Ω

3 kΩ

3 kΩ

Pin 18

Pin 17

V

EE

Figure 6 Bias Monitor – Transceiver Internal

Figure 7 Typical Variations of Bias Monitor Voltage over Temperature

Data Sheet 8 2003-03-21

File: 1310

File: 1312