 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TZA3041 Datasheet(PDF) 10 Page - NXP Semiconductors |
|
||||||||||||||||||||||||||||||
TZA3041 Datasheet(HTML) 10 Page - NXP Semiconductors |
|
|
10 / 32 page  2002 Aug 13 10 Philips Semiconductors Product specification Gigabit Ethernet/Fibre Channel laser drivers TZA3041AHL; TZA3041BHL; TZA3041U Automatic laser shut-down and laser slow start The laser modulation and bias currents can be rapidly switched off when a HIGH level (CMOS) is applied to pin ALS. This function allows the circuit to be shut-down in the event of an optical system malfunction. A 25 k Ω pull-down resistor defaults pin ALS to the non active state (see Fig.11). When a LOW level is applied to pin ALS, the modulation and bias currents slowly increase to the desired values at the typical time constants of τONE and τZERO, respectively. This can be used to slow-start the laser. Manual laser override The automatic laser control function can be overridden by connecting voltage sources to pins TZERO and TONE to take direct control of the current sources for bias and modulation respectively. The control voltages should range from 1.4 to 3.4 V to swing the modulation current over the range 1 to 60 mA and the bias current over the range 1 to 90 mA. These current ranges are guaranteed. Due to the tolerance range in the manufacturing process, some devices may have higher current values than those specified, as shown in Figs 12 and 13. Both figures show that temperature changes cause a slight tilting of the linear characteristic around an input voltage of 2.4 V. Consequently, the manually controlled current level is most insensitive to temperature variations at around this value. Bias and modulation currents in excess of the specified range are not supported and should be avoided. Currents into or out of pins TZERO and TONE in excess of 10 µA must be avoided to prevent damage to the circuit. handbook, halfpage MGS905 GND 40 pF <1 nA LINEAR VOLTAGE TO CURRENT CONVERTER TZERO, TONE 2.4 V <1 nA Fig.10 TZERO and TONE internal configuration. handbook, halfpage MGS911 25 k Ω VCC(R) 100 Ω GND ALS 100 Ω Fig.11 ALS input. |
Similar Part No. - TZA3041 |
|
Similar Description - TZA3041 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
