Delta Electronics SPBD-1250A4Q1R SFP Host Board Schematic, Protocol IC, SerDes IC, Pld / Pal

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SPBD-1250A4Q1R

9. Recommend Interface Circuit

VCC

3.3V

1uH

Protocol Vcc

RES1

Tx_Disable

Tx_Fault

Protocol IC

SerDes IC

1uH	DELTA SFP Module

10uF 0.1uF

0.1uF VccT

10k Ohms

Tx_Disable

Tx_Fault
TD +	0.01uF
	Laser Driver
	100 Ohms
	Laser Diode
TD -	0.01uF
	0.01uF
VeeT

RES1	0.1uF	VccR
10uF	0.1uF
	RD +	0.01uF
		0.01uF

100 Ohms*

RD - 0.01uF

Rx_LOS

3.3V	Rx_LOS
3.3V
	VeeR

Preamp &

Quantizer

Photo Diode

RES1 RES1 RES1

PLD / PAL

Mod_def 2

Mod_def 1

Mod_def 0

RES1 = 4.7k to 10k Ohms

* Depands on SerDes IC used

EEPROM

SFP Host Board Schematic

Design criterion of the capacitor used is the resonant frequency and its value must be in the order of the nominal data rate. Short trace lengths are mandatory.

Recommended Host Board Supply Filtering Network
8	Revision: S1
	03/12/2007
DELTA ELECTRONICS, INC.	www.deltaww.com

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Contents z RoHS compliant z Digital Diagnostic SFF-8472 Compliant z Simplex LC connector with 1310nm Transmitter and 1490nm Receiverz Single + 3.3V power supply and TTL logic interface SPBD-1250A4Q1R3. Specification of Transmitter Symbol1. Absolute Maximum Ratings 2. Recommended Operating ConditionsRMS spectral widthmax 4. Specification of ReceiverCenter Wavelength Receiver 5. Electrical Interface CharacteristicsTransmitter 6. Enhanced Digital Diagnostic Interface 7. Digital Diagnostic Monitor AccuracyAccuracy CalibrationHost Board Connector Pad Layout 8. Pin DescriptionSFP Transceiver Electrical Pad Layout Pin Function Definitionswith a 4.7 - 10 K Ω resistor. Its states are SFP Host Board Schematic Protocol ICSerDes IC DELTA SFP Module10. Outline Dimensions Transmitter WavelengthLatch Color Identifier Week 52Weeks/Year 1月2日=01Feature 11. Regulatory ComplianceAppendix A. Document Revision Test Method