gd16521 ETC-unknow, gd16521 Datasheet
gd16521
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gd16521 Summary of contents
Page 1
... The GD16521 is designed to meet and exceed ITU-T STM-16 and SONET OC-48 fiberoptic communication systems requirements. The GD16521 is designed to sink a Mod- ulation Current into the IM pin and a Pre-Bias Current into the IB pin. The Modulation Current is adjustable and the Pre-Bias Current is ad- justable up to 100 mA ...
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... Functional Details GD16521 is a 2.5 Gbit/s laser driver with an optional re-timing of the data signal capable of driving laser diodes maximum modulation current and a maximum pre-bias current of 100 mA. The Inputs Data (SDIP/SDIN) is input to GD16521 and re-timed within a DFF clocked by an external clock (SCIP/SCIN). Optionally the re-timing may be bypassed controlled by a select pin (FFSET) ...
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... Figure 3. Modulation current control loop with enhanced extinction ratio control. Data Sheet Rev.: 11 VCC DUTY IMB IM IMM IMC Duty Adjust - + MCCL 1/20 SHDW IMSET VCC IMB IM IMM IMC AR Anti rush 1/20 SHDW IMSET GD16521 IBM OPSET Anti rush 1/20 IBSET IBM OPSET - + OPCL 1/20 IBSET OPCL Page ...
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... Figure 10 on page 5. The GD16521 is optimized for this configuration. AC Coupling AC coupling is recommended for the packaged version, in particular when the output is connected to the laser diode ...
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... ohm) 0.05 pF chip 0.1 uF) 0.04 pF 0. chip R equivalent circuit note1 : Chip component constants mean available range. This circuit is applied to all temperature range. note2 : on-chip stray elements note3 : on-chip R, if necessary GD16521 0. ohm 1.0 V 0 LDD 0.04 pF 0.04 pF 0.1 ohm 0. chip C equivalent circuit ...
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... Input for control of the mark-space ratio of the output. Decreasing the voltage of the DUTY pin increases the pulse width of a current high into the IM pin. Typically connected to VEE through resistor. PWR Positive supply pins for laser driver part. PWR Positive supply pin for modulation current control system. GD16521 Page ...
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... Positive supply pin for output stage operating point control sys- tem. Connect to VCCCONT. PWR Positive supply pin for re-timing part. PWR Negative supply pins for laser driver and control circuit part. PWR Negative supply pin for re-timing part. Not connected. Connected to VEE. GD16521 MARKN 36 MARKP 35 VEE 34 VCC 33 IMB ...
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... Static Discharge (CML, LVTTL, ANL and PWR) Note 1, 2 ESD I/O Note 1: Human body model (100 pF, 1500 W) MIL883 std. Note 2: The pins IM and IMB have no ESD protection. Data Sheet Rev.: 11 Conditions: MIN.: -0.5 -0.5 -0.5 -15 Junction -40 -65 500 GD16521 TYP.: MAX.: UNIT 0 +125 °C +150 °C ...
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... CASE +95 ° IBM -500 -100 SHDW = “1" - Note 2 -70 Note 1 -3 SHDW = “1" -25 GD16521 TYP.: MAX.: UNIT: +3.3 +3.6 V -125 -110 mA 410 mW 800 0 ...
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... Note 1: Conditions TBD. Note 2: The AC parameters are only specified in the range from - mA. Note 3: The current is terminated with the external loop through termination Note Diff Data Sheet Rev GD16521 Page ...
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... Note 1 Note 1 Conditions: Note 3, 2 Note 3 Note 3 Note 3 Note 3 Note 3 Note 3 Note 3 Note 3 Note mA. Rise/Fall times at 20 – HI/LO voltage levels. IMB con- LD Figure 10 on page 5 . Input signal is PN23 (2 GD16521 MIN.: TYP.: MAX.: UNIT: 2500 Mbit/s 0. 100 ps 100 ps 0 +20 % ...
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... Package Outline Figure 13.Package 48 pin TQFP. All dimension are in mm. Data Sheet Rev.: 11 GD16521 Page ...
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... Temperature Range: -30..+100 EC (die back) -40..+95 EC (case) GD16521, Data Sheet Rev Date: 1 February 2001 The information herein is assumed to be reliable. GIGA assumes no responsibility for the use of this information, and all such information shall be at the users own risk. ...