oq2545hp NXP Semiconductors, oq2545hp Datasheet
oq2545hp
Related parts for oq2545hp
oq2545hp Summary of contents
Page 1
... DATA SHEET OQ2545HP; OQ2545BHP SDH/SONET STM16/OC48 laser drivers Product specification Supersedes data of 1997 Nov 27 File under Integrated Circuits, IC19 INTEGRATED CIRCUITS 1999 Aug 24 ...
Page 2
... SDH/SONET STM16/OC48 laser drivers FEATURES Differential 50 inputs for direct connection to Current-Mode Logic (CML) outputs Internal retiming to minimize jitter (OQ2545HP only) Input clock phase margin of 320 at 2.5 Gbits/s (OQ2545HP only) RF output current sinking capability Bias output current sinking capability of 100 mA TTL compatible control inputs ...
Page 3
... Pins 1, 12, 13, 24, 25, 36, 37 and 48. (2) Pins 11, 14, 20, 23, 26, 29, 32, 35, 38, 41 and 47. 1999 Aug 24 MONITOR BUFFER OQ2545HP FF PRE- AMPLIFIER EMITTER FOLLOWERS SMOD V EE1 AMPADJ Fig.1 Block diagram of OQ2545HP. 3 Product specification OQ2545HP; OQ2545BHP ANALOG SECTION MODULATION DRIVER (1) ( EFADJ ALS V EE2 ...
Page 4
... Pins 11, 14, 20, 23, 26, 29, 32, 35, 38, 41 and 47. 1999 Aug 24 MONITOR BUFFER OQ2545BHP FF PRE- AMPLIFIER EMITTER FOLLOWERS SMOD V EE1 AMPADJ Fig.2 Block diagram of OQ2545BHP. 4 Product specification OQ2545HP; OQ2545BHP ANALOG SECTION MODULATION DRIVER (1) ( EFADJ ALS V EE2 V CC GND 40 MON 39 ...
Page 5
... S ground supply I clock input 30 internally connected; internal resistance inverted clock input 31 internally connected; internal resistance ground supply 33 I data input 34 I inverted data input 5 Product specification OQ2545HP; OQ2545BHP DESCRIPTION to GND to GND to GND to GND ...
Page 6
... TTL interface (+ ground supply 48 S supply voltage for analog section ( 6 OQ2545HP Fig.3 Pin configuration of OQ2545HP. 6 Product specification OQ2545HP; OQ2545BHP DESCRIPTION 36 V EE2 35 GND 34 DINQ 33 DIN 32 GND 31 CINQ 30 CIN 29 ...
Page 7
... GND DIOA GND LA LA LAQ LAQ GND IBIAS GND V EE2 1999 Aug OQ2545BHP Fig.4 Pin configuration of OQ2545BHP. 7 Product specification OQ2545HP; OQ2545BHP 36 V EE2 35 GND 34 DINQ 33 DIN 32 GND 31 i.c. i. GND 28 i.c. 27 i.c. 26 GND 25 V EE2 MGL728 ...
Page 8
... EAM, a second multiplexer inverts the input signals when pin SMOD is connected to V EE1 An external clock (OQ2545HP only) connected to a master-slave flip-flop is then used to retime the data. This reduces jitter on the data signal to a minimum. The preamplifier boosts the signal to a suitable level for the modulation driver ...
Page 9
... SMOD. When pin SMOD = 0 V the value mod pin SMOD = V (approximately 100 I SIMOD k I SIMOD V EE2 Fig.6 Schematic of laser modulation outputs. 9 Product specification OQ2545HP; OQ2545BHP . When left open-circuit, pin SMOD is EE1 I (approximately) and whereas SIMOD the value 107 I EE1 mod 100 LA LAQ (1) ...
Page 10
... To avoid high frequency resonance, multiple bypass capacitors should not be mounted at the same location. To minimise low frequency switching noise in the vicinity of the IC, the power supply line should ideally be filtered once using an LC circuit with a low cut-off frequency. 10 Product specification OQ2545HP; OQ2545BHP . However, care should be taken EE2 ...
Page 11
... I IBIAS AMPADJ bias current, i.e. pins AMPADJ and EFADJ can be left open-circuit. 11 OQ2545HP; OQ2545BHP where I and I are the currents through AMPADJ EFADJ pins AMPADJ and EFADJ, respectively. These figures are valid for nominal supply voltage and temperature and are given for rough indication only ...
Page 12
... I LA(int) I mod I bias OQ2545 V EE2 Fig.8 Laser high ‘light emitting’. 12 OQ2545HP; OQ2545BHP can be derived. This value strongly depends on the 10 mm around the corner leads will result K/W. This value th(j-a) can be obtained with th(j-a) 125 T – amb max P = ...
Page 13
... Aug 24 GND I LAQ(int) 30 100 100 LAQ I LAQ(ext) LA IBIAS EMI choke I mod I bias OQ2545 MGL735 V EE2 Fig.9 Laser low ‘dark’. PARAMETER PARAMETER 13 Product specification OQ2545HP; OQ2545BHP 1 laser I BIAS MIN. MAX. 0.5 +6.0 V 6.0 +0.5 V 7.5 +0.5 V 1.0 +0.5 V 2.0 +0 ...
Page 14
... Current source control inputs: pins SIMOD and SIBIAS; note 6 bias current converter coefficient bias modulation current converter mod coefficient B bandwidth of unity gain amplifier G gain peaking SR slew rate 1999 Aug 24 OQ2545HP; OQ2545BHP load +85 C. amb CONDITIONS MIN. 4.75 4.75 6.85 OQ2545HP OQ2545BHP normal operation; note 1 laser shutdown maximum bias and modulation current ...
Page 15
... O Monitor outputs: pins MON and MONQ V output voltage (peak-to-peak value) o(p- output voltage O Z output impedance o Clock phase margin: pins CIN and CINQ (OQ2545HP only); see Fig.13 T CIN cycle time cy(CIN) t set-up time su t hold time h clock phase margin m Notes 1 ...
Page 16
... EE2 on pins LA and LAQ. 100% The data stream should be ‘010101010101...’ 16 Product specification OQ2545HP; OQ2545BHP on-chip resistors fall below 1 mA after pin ALS = HIGH-level. IBIAS . With a current of 1 mA, the anode EE2 ...
Page 17
... Aug 24 CML INPUT V I(max I(min) Fig.10 Logic level symbol definitions for CML inputs. handbook, halfpage 50 OSCILLOSCOPE MGL737 Measured at T Fig.12 Maximum power dissipation as a function of 17 Product specification OQ2545HP; OQ2545BHP GND V i(p-p) MGL730 4 P tot ( th(j-a) (K/ ...
Page 18
... Set-up and hold time definitions are illustrated in Fig.13. The timing characteristics are applicable in both normal and loop modes. handbook, full pagewidth CIN DIN Output timing handbook, full pagewidth LA 1999 Aug 24 T cy(CIN) valid data Fig.13 CML input timing (OQ2545HP only o(p-p) Fig.14 Modulation output timing. 18 Product specification OQ2545HP; OQ2545BHP 50 MGK369 ...
Page 19
... All V pins (pins 1, 12, 13, 24, 25, 36, 37 and 48) must connected together. EE2 (2) All GND pins (pins 11, 14, 20, 23, 26, 29, 32, 35, 38, 41 and 47) must be connected directly to the PCB ground plane. Fig.15 Application schematic OQ2545HP with laser diode. 1999 Aug 24 LASER DIODE COMPENSATION ...
Page 20
... OQ2545BHP i. MON MONQ ALS ENL from main controller module 20 Product specification OQ2545HP; OQ2545BHP optical fibre optical monitor output LASER CURRENT CONTROL IBIAS V bias V mod DIOA EE2 ( EE1 42 GND ( ...
Page 21
... EE2 (2) All GND pins (pins 11, 14, 20, 23, 26, 29, 32, 35, 38, 41 and 47) must be connected directly to the PCB ground plane. Fig.17 Application schematic OQ2545HP with Electro Absorption Modulator (EAM). 1999 Aug 24 LASER DIODE ...
Page 22
... 2.5 scale (1) ( 0.27 0.18 7.1 7.1 9.15 0.5 0.17 0.12 6.9 6.9 8.85 REFERENCES JEDEC EIAJ 22 OQ2545HP; OQ2545BHP detail 9.15 0.75 1.0 0.2 0.12 0.1 8.85 0.45 EUROPEAN PROJECTION Product specification SOT313 (1) ( 0.95 0.95 ...
Page 23
... To overcome these problems the double-wave soldering method was specifically developed. 1999 Aug 24 OQ2545HP; OQ2545BHP If wave soldering is used the following conditions must be observed for optimal results: Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave ...
Page 24
... Philips for any damages resulting from such improper use or sale. 1999 Aug 24 SOLDERING METHOD WAVE not suitable (2) suitable (3)(4) not recommended (5) not recommended 24 Product specification OQ2545HP; OQ2545BHP (1) REFLOW suitable suitable suitable suitable suitable ...
Page 25
... Philips Semiconductors SDH/SONET STM16/OC48 laser drivers 1999 Aug 24 OQ2545HP; OQ2545BHP NOTES 25 Product specification ...
Page 26
... Philips Semiconductors SDH/SONET STM16/OC48 laser drivers 1999 Aug 24 OQ2545HP; OQ2545BHP NOTES 26 Product specification ...
Page 27
... Philips Semiconductors SDH/SONET STM16/OC48 laser drivers 1999 Aug 24 OQ2545HP; OQ2545BHP NOTES 27 Product specification ...
Page 28
Philips Semiconductors – a worldwide company Argentina: see South America Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140, Tel. +61 2 9704 8141, Fax. +61 2 9704 8139 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. + 101 ...