 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
DS1864 Datasheet(PDF) 1 Page - Dallas Semiconductor |
|
|
|||||||||||||||||||||||||||||
DS1864 Datasheet(HTML) 1 Page - Dallas Semiconductor |
|
|
1 / 72 page  General Description The DS1864 is an SFF-8472 multisource agreement (MSA)-compliant laser controller/monitor that is ideal for SFP optical-transceiver module designs. It controls laser driver bias and modulation currents through a pair of tem- perature-controlled current-sink DACs. System diagnos- tics are provided by monitoring three analog inputs, VCC, and temperature through the internal temperature sensor. The device also contains all EEPROM required by the SFF-8472 MSA, including all A0h and A2h EEPROM. The DS1864’s memory map can be configured to be compati- ble with both the DS1852/DS1856 and the DS1859 mem- ory maps. Additionally, memory is secured with customer- configurable two-level password protection. Eye-safety features are integrated by three fast-trip comparators that monitor transmit-power high, transmit- power low, and bias current. The fast-trip comparators drive a FET driver output to disable the laser in the case of eye safety violation. With its integrated laser driver control, system diagnos- tics, eye-safety features, and internal temperature sen- sor, the DS1864 provides an ideal solution for SFP optical transceiver modules by improving system perfor- mance, reducing board space, and simplifying design. Applications SFP Optical Transceiver Modules Laser Control and Monitoring Features ♦ SFF-8472 MSA Compatible ♦ Five Monitored Channels (Temperature, VCC, MON1, MON2, MON3) Three External Analog Inputs (MON1, MON2, MON3) Support Internal and External Calibration Enhanced RSSI Monitoring (26dB Range, 0.5dB Accuracy) Scalable Dynamic Range for External Analog Inputs Internal Direct-to-Digital Temperature Sensor Alarm and Warning Flags for All Monitored Channels ♦ Two Linear 8-Bit Current-Sink DACs Two User-Selectable Full-Scale Ranges (0.5mA or 1.5mA) Values Changeable Every 2°C ♦ Three Fast-Trip Comparators (Tx Power High, Tx Power Low, and Bias Current) for Eye Safety ♦ Flexible, Two Level Password Scheme Provides Three Levels of Security ♦ Provides All Optional and Required SFF-8472 MSA EEPROM (Both A0h and A2h Memory) ♦ I2C-Compatible Serial Interface ♦ Operates from a 3.3V or 5V Supply ♦ -40°C to +95°C Operating Temperature Range ♦ 28-Pin TQFN Package (5mm x 5mm) SFP Laser Controller and Diagnostic IC ______________________________________________ Maxim Integrated Products 1 Rev 0; 4/06 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. +Denotes lead-free only package. Ordering Information PART TEMP RANGE PIN-PACKAGE DS1864T -40°C to +95°C 28 TQFN (5mm x 5mm) DS1864T+ -40°C to +95°C 28 TQFN (5mm x 5mm) TQFN 5mm x 5mm TOP VIEW 26 27 25 24 10 9 11 SDA INTX-F INLOS IN1 N.C. 12 RSELOUT DAC0 DAC1 MON1P VCC MON1N N.C. 1 2 4 5 6 7 20 21 19 17 16 15 SCL GND 3 18 28 8 23 13 22 14 DS1864 Pin Configuration Typical Operating Circuit appears at end of data sheet. *Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these com- ponents in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. |
Similar Part No. - DS1864 |
|
Similar Description - DS1864 |
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | 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
