Electronic Components Datasheet Search |
|
SP8855E Datasheet(PDF) 1 Page - Zarlink Semiconductor Inc |
|
SP8855E Datasheet(HTML) 1 Page - Zarlink Semiconductor Inc |
1 / 14 page SP8855E 2.8GHz Parallel Load Professional Synthesiser Advance Information DS4239 ISSUE 3.0 March 1999 HP44 Figure 1 - Pin connections - top view Pin Description Pin Description 1 Input bus bit 10 23 Control Direction 2 Input bus bit 9 24 F pd* 3 Input bus bit 8 25 F ref* 4 Input bus bit 7 26 +5V 5 Input bus bit 6 27 Ref. osc capacitor 6 Input bus bit 5 28 Ref in/XTAL 7 Input bus bit 4 29 Reference bit 9 8 Input bus bit 3 30 Reference bit 8 9 Input bus bit 2 31 Reference bit 7 10 Input bus bit 1 32 Reference bit 6 11 Input bus bit 0 33 Reference bit 5 12 0V (prescaler) 34 Reference bit 4 13 RF input 35 Reference bit 3 14 RF input 36 Reference bit 2 15 V CC + 5V (prescaler) 37 Reference bit 1 16 V EE 0V 38 Reference bit 0 17 Lock detect output 39 Phase Detect Enable 18 C-lock detect 40 Phase Detect Gain 1 19 Rset 41 Phase Detect Gain 0 20 Charge pump output 42 Input bus bit 13 21 Charge pump ref. 43 Input bus bit 12 22 F ref/Fpd enable 44 Input bus bit 11 *Fpd and Fref outputs are reversed using the Control Direction input. The table above is correct when pin 23 is high. OPTIONAL PIN 1 REFERENCE HC44 PIN 1 Features • 2.8GHz Operating Frequency (IG GRADE) • Single 5V Supply Operation • High Comparison Frequency 50MHz • High Gain Phase Detector 1mA/rad • Programmable Phase Detector Gain • Zero "Dead Band" Phase Detector • Wide range of RF and Reference Divide Ratios • Programming by Hard Wired Inputs • Low cost plastic package option • GPS HI-REL level a screened option The SP8855E is one of a family of parallel load synthesisers containing all the elements apart from the loop amplifier to fabricate a PLL synthesis loop. Other devices in the series are the SP8852E which is a fully programmable device requiring two 16 bit words to set the RF and reference counters, and the SP8854E which has hard wired reference counter programming and requires a single bit word to pro- gram the RF divider. The SP8855E replaces the existing SP8855D. The SP8855E is intended for applications where a fixed synthesiser frequency is required although it can also be used where frequency selection is set by switches. In general the device will be programmed by connecting the programming pins to either V CC or ground. Additional hard wired inputs can be used to control the F pd and Fref outputs set the control direction of the loop and select the phase detector gain. Another input may be used to disable the phase detector output. The device is available in both plastic (HP) and ceramic (HC) J-leaded 44-lead chip carrier. Ambient temperature ranges available are shown in the ordering information. Absolute Maximum Ratings Supply voltage -0.3V to 6V Storage temperature -65 °C to +150°C Operating temperature -55 °C to +100°C Prescaler & reference Input Voltage 2.5V p-p Data Inputs V CC +0.3V V EE -0.3V Junction temperature + 175 °C (HC package) + 150 °C (HP package) |
Similar Part No. - SP8855E |
|
Similar Description - SP8855E |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |