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SBM51414A Datasheet(PDF) 3 Page - Siemens Semiconductor Group |
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SBM51414A Datasheet(HTML) 3 Page - Siemens Semiconductor Group |
3 / 7 page SBM 51414X Semiconductor Group 3 Characteristics (cont’d) Parameter Symbol Values Unit Laser Diode (cont’d) Temperature coefficient of wavelength TCλ < 0.5 nm / K Monitor Diode Dark current, VR = 2 V, Φe = 0, TC = 85 °C IR 200 nA Photocurrent, VR = 2 V, Φe = 0.5 mW IP 200 … 1200 µA Capacitance, VR = 2 V, f = 1 MHz C2 < 10 pF Tracking error, VR = 2 V (see note 1) TE − 1 … 1 dB Detector Dark current, VR = 2 V, Φe = 0, TC = 85 °C IR < 50 nA Spectral sensitivity, VR = 2 V, λ = 1550 nm Sλ > 0.65 A / W Capacitance, VR = 2 V, f = 1 MHz C2 < 1.5 pF Rise and fall time, VR = 2 V, 10 % - 90 % tr, tf < 1 ns Module Optical crosstalk (see note 2) CRT < − 47 dB Note 1: The tracking error TE is the variation rate of Φe at constant current Imon over a specified temperature range and relative to the reference point: Imon,ref = Imon ( T = 25 °C, Φe = 0.5 mW). Thus, TE is given by: [[]] [[]] [[]] [[]] TE T dB log C C eC e e == −− ×× °° °° 10 25 25 ΦΦ Φ Note 2: Optical Crosstalk is defined as CRT = 10 × log (IDet,0/IDet,1) with: IDet,0 the photo- current with Φe = 0.5 mW CW laser operation, VR = 2 V, with minimum optical return loss from fiber end and IDet,1 the photocurrent without Φe, but 0.5 mW optical input power, λ = 1550 nm. |
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