sy88232l Micrel Semiconductor, sy88232l Datasheet

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sy88232l

Manufacturer Part Number
sy88232l
Description
2.5gbps Laser Diode Driver With Integrated Limiting Amplifier
Manufacturer
Micrel Semiconductor
Datasheet

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Part Number
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Part Number:
sy88232lMG
Manufacturer:
Micrel Inc
Quantity:
135
General Description
The SY88232L is a single supply 3.3V integrated laser
driver and post amplifier for telecom/datacom applications
with data rates from 155Mbps up to 2.5Gbps. The driver
can deliver modulation current up to 85mA, and provides a
high compliance voltage that makes it suitable for high-
current operation with the laser DC-coupled to it. The post
amplifier can detect signals with amplitude as low as
5mV
The SY88232AL is a version of the SY88232L without 50Ω
termination resistors at the inputs of the driver and the post
amplifier. The SY88232AL is to be used specially in SFF
modules mounted on mother boards which have
preinstalled terminations. Removing post amplifier input
terminations will allow for receiver gain control.
All support documentation can be found on Micrel’s web
site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
MLF and MicroLeadFrame are registered trademarks of Amkor Technology
June 2009
PP
.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
Features
∑ 2.4V minimum laser compliance voltage
∑ Operation up to 2.5Gbps
∑ Integrated APC circuit
∑ Modulation current up to 85mA
∑ Bias current up to 70mA
∑ Bias, Modulation, and power monitoring
∑ High input sensitivity post amplifier, 5mV
∑ Programmable LOS level
∑ Available in 32-pin (5mm x 5mm) MLF
Applications
∑ Multi-rate burst mode applications: A-PON, B-PON,
408
2.5Gbps Laser Diode Driver with Integrated
G-PON, E-PON, GE-PON
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Limiting Amplifier
SY88232L/AL
hbwhelp@micrel.com
®
or (408) 955-1690
M9999-063009-A
package
PP

Related parts for sy88232l

sy88232l Summary of contents

Page 1

... PP The SY88232AL is a version of the SY88232L without 50Ω termination resistors at the inputs of the driver and the post amplifier. The SY88232AL used specially in SFF modules mounted on mother boards which have preinstalled terminations. Removing post amplifier input terminations will allow for receiver gain control. All support documentation can be found on Micrel’ ...

Page 2

... MLF-32 = +25°C, DC Electricals only SY88232L/AL Package Marking Lead Finish SY88232L with NiPdAu Pb-Free bar-line indicator Pb-Free SY88232L with NiPdAu Pb-Free bar-line indicator Pb-Free SY88232A with NiPdAu Pb-Free bar-line indicator Pb-Free SY88232A with NiPdAu Pb-Free bar-line indicator Pb-Free M9999-063009-A hbwhelp@micrel ...

Page 3

... SY88232L: Driver Non-inverting input data. Internally terminated with 50Ω reference voltage. SY88232AL: Driver Non-inverting input data. No internal termination. SY88232L: Driver inverting input data. Internally terminated with 50Ω reference voltage. SY88232AL: Driver inverting input data. No internal termination. Transmitter Complementary Fast Disable. TTL input. The transmitter is enabled when this pin is asserted High or left open and disabled when this pin is asserted Low. A 6.3kΩ ...

Page 4

... Received Signal Strength Indicator. Install a resistor from this pin to GND to get a voltage proportional to the received signal. Indicates APC failure when High. Active High TTL/CMOS. Use a 10kΩ Pull up. SY88232L: Post amplifier Non-inverting input data. Internally terminated with 50Ω reference voltage. SY88232AL: Post amplifier Non-inverting input data. No internal termination. ...

Page 5

... Assuming that the cathode of the laser is connected to MOD+. June 2009 (2) MOD- Laser Output (3) Power (1, 3) BIAS ON OFF OFF (1) 5 LOS/SD_SEL Function JAM Selected H LOS L H LOS Table 3. Post Amp Output Truth Table hbwhelp@micrel.com SY88232L/AL Output Enabled Disabled Disabled Enabled M9999-063009-A or (408) 955-1690 ...

Page 6

... BIAS_MIN the Driver Output, BIAS pin, for Proper Operation I Bias-ON Current BIAS I Bias-OFF Current BIAS_OFF R Input Resistance at DIN+ and IN (SY88232L only) DIN- V APCFAULT Output Low OL I APCFAULT Output Leakage OH I Current range at MD pin MD Notes: 1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet ...

Page 7

... OH V ROUT+, ROUT- LOW Voltage OL V Maximum voltage at RSSI pin RSSI V Differential Output Offset OFFSET Z (ROUT) Single-Ended Output 0 Impedance Z (RIN) Single-Ended Input Impedance I (SY88232L only) V (LOS/SD) LOS/SD Output Low OL I (LOS/SD) LOS/SD Output Leakage OH June 2009 Condition I = 2mA SY88232L/AL ...

Page 8

... ON, TXDIS high, and a 6.3kΩ installed between /TXDIS and GND TXDIS changes from low to high with power ON, /TXEN low, and a 6.3kΩ installed between /TXDIS and GND 622Mbps 1.25Gbps 2.5Gbps 8 SY88232L/AL = +3.3V 25° MOD Min Typ Max Units 0 ...

Page 9

... PP = 10mV . Min Typ 700 800 ± 2 1.5 2 1.5 2 1 hbwhelp@micrel.com SY88232L/AL Max Units ps 120 RMS mV PP 1800 mV PP 950 µ µ ...

Page 10

... R (kW) MODSET LOSA and LOSD vs. R 100 10 1 200 100 1000 10000 R (W) LOSLVL 10 I BIASMON 0.05 0.04 0.03 0.02 0.01 0. 100 BIAS 25 30 LOSLVL 100000 M9999-063009-A hbwhelp@micrel.com or (408) 955-1690 SY88232L/AL Gain (mA) ...

Page 11

... Micrel, Inc. Functional Characteristics Laser Driver June 2009 11 hbwhelp@micrel.com SY88232L/AL M9999-063009-A or (408) 955-1690 ...

Page 12

... Micrel, Inc. Functional Characteristics (continued) Post Amplifier June 2009 12 hbwhelp@micrel.com SY88232L/AL M9999-063009-A or (408) 955-1690 ...

Page 13

... Micrel, Inc. Functional Diagram The SY88232L is shown. For the SY88232AL, 50Ω terminations should be removed from DIN± and RIN±. June 2009 13 hbwhelp@micrel.com SY88232L/AL M9999-063009-A or (408) 955-1690 ...

Page 14

... SD (set to low) function. It also controls the internal circuitry of JAM input to follow LOS/SD selection reduce the noise at the output of the detected and amplified Small input signals below typically 12mV PP PP M9999-063009-A hbwhelp@micrel.com or (408) 955-1690 SY88232L/ JAM LVL PP , the ...

Page 15

... GND to convert the current into a monitoring voltage proportional to the amplitude of the signal at the input of the post amplifier. The value of the resistor should be selected to keep the voltage at the RSSI pin under its limit of 1.2V to maintain RSSI linearity. / LOS-Assert 15 SY88232L/AL M9999-063009-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 16

... Input and Output Stages (SY88232L) Figure 1a. Simplified Driver Input Stage Figure 1c. Simplified Driver Output Stage Figure 1e. Post Amplifier Output Stage Note: 1. Applies for SY88232L only. For SY88232AL input terminations need to be removed. June 2009 (1) (1) Figure 1b. Simplified TXDIS Input Stage Figure 1d. Post Amplifier Input Stage ...

Page 17

... Interfacing DIN to Different Logic Drivers (SY88232L) Figure 2a. Driving DIN with PECL Outputs Figure 2c. LOSLVL Setting Circuit Note: 1. Applies for SY88232L only. For SY88232AL input terminations need to be added. June 2009 (1) (1) Figure 2b. Driving DIN with CML Outputs Figure 2d. LOS Output Structure ...

Page 18

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully June 2009 32-Pin (5mm x 5mm) MLF indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. 18 ® (MLF-32) hbwhelp@micrel.com SY88232L/AL M9999-063009-A or (408) 955-1690 ...

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