PACR4G CALMIRCO | Alldatasheet

Document overview

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Technical content

Features

  • Designed especially for High Performance computers/servers  Provides high speed bus termination  Reduces ground bounce with ground pin placement / Ultra low crosstalk  Terminates 20 lines in a QSOP package Product Description High speed microprocessors demand unique, high speed bus termination. The PACR4G Termination Network provides 20 terminations per package and meets the requirements for high speed terminations. This Termination Network provides high performance, high reliability, and low cost through manufacturing efficiency. The termination resistor elements are fabricated using state-of-the-art thin film manufacturing.

Applications

 High Performance servers  High Performance desk top systems  GTL, NTL, ECL terminator C0970500 SCHEMATIC CONFIGURATION This integrated solution is silicon-based and has the same reliability characteristics as any of today’s micro- processor products. The thin film resistors have very high stability over temperature, over applied voltage and over life. In addition the QSOP industry standard packaging is easy to handle in manufacturing and yields a high reliability similar to other semiconductor compo- nents. R RRR R RR R R R RR R R R RR R RR NOITAMROFNIGNIREDROTRAPDRADNATS egakcaPr ebmuNtraPgniredrO edoCRs niPe lytSs ebuTl eeR&epaTg nikraMtraP 0744 2P OSQT /QG4R074CAPR /QG4R074CAPQ G4R074CAP 0054 2P OSQT /QG4R005CAPR /QG4R005CAPQ G4R005CAP 0654 2P OSQT /QG4R065CAPR /QG4R065CAPQ G4R065CAP 0864 2P OSQT /QG4R086CAPR /QG4R086CAPQ G4R086CAP 0094 2P OSQT /QG4R086CAPR /QG4R086CAPQ G4R086CAP SNOITACIFICEPSDRADNATS )R(ecnareloTetulosbA% 1± egnaRerutarepmeTgnitarepOC °07otC°0 rotsiseR/gnitaRrewoPW m001 erutarepmeTegarotSC °051otC°56– gnitaRrewoPegakcaPx aM,w00.1 klatssorCl acipyt%2±< SEULAVDRADNATS )W(Re doC 740 74 050 05 650 65 860 86 090 09

©2000 California Micro Devices Corp. All rights reserved. 7/18/2000215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com2 PACR4GCALIFORNIA MICRO DEVICES Signal at Termination and Victim Line (TA = 25OC) (See Test Circuit) Channel 1 (500mV/division) Termination Signal, Channel 2 (50mV/division) Victim Voltage. The victim voltage crosstalk measures 35mV in the critical areas around the system clock. The system clock occurs approximately 4ns before each data transition. The horizontal dashed lines are 35mV apart. The time scale is 5.0ns/division. (The signal voltage rise and fall times have been adjusted at the driver to conform to Intel specifications.) Measurements made using Tektronix TDS820 6 GHz Digitizing Oscilloscope with P6207 FET Probes.Test Circuit Block Diagram Cha 500mV/De Cha 250mV/De 15mV 15mV

© 2000 California Micro Devices Corp. All rights reserved. 7/18/2000 3 PACR4GCALIFORNIA MICRO DEVICES 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com Test Circuit VCC_1.5 G10 R11 R12 R 13R 14G 15R 16R 17R 18G 19R 20R 21G 22R 23R 24 PRN331B C22 1000pF C23 0.1uF TP5 PB5 VICTIM VTT VTT GTL2 GTL3 VTT GTL4 GTL4 VTT VTT GTL8 GTL8 GTL9 GTL9 GTL11 GTL11 VTT GTL7 GTL1 GND C18 1000pF C19 0.1uF C20 1000pF C21 0.1uF VCC_1.5 GND C15 1000pF C16 0.1uF C17 0.1uF GTL1 GTL2 GTL3 GTL4 GTL5 GTL6 GTL8 GTL7 VCC_5 VCC_1.5 GND GND GND /OEAB1 LEAB2 A13 A25 A36 VCC_37 A48 A59 A610 A712 A813 A914 A1015 A1116 A1217 A1319 A1420 A1521 VCC_322 A1623 A1724 CLKIN26 /OEBA27 LEBA28 /CEBA 29CLKBA 30CLKOUT 31 B17 33B16 34VREF 35B15 36B14 37B13 38 B12 40B11 41B10 42B9 43B8 44B7 45 B6 47B5 48B4 49 B3 51B2 52 B1 54CLKAB 55/CEAB 56 74GTL16616 0.1uF 0.1uF VCC_3 GND GND GND GATE1 GATE2 GATE3 GND GND GND 1A12 1A24 1A36 1A48 2A111 2A213 2A315 2A417 1G1 2G19 1Y1 18 1Y2 16 1Y3 14 1Y4 12 2Y1 9 2Y2 7 2Y3 5 2Y4 3 74FCT244 GATE1 GATE2 GATE3 GATE4 BUFFER1 VCC_5 SMA RIN1 100 RIN2 100 TP1 PB1 TP1 BUFFER1 GND GND GND PULSE_GEN GND GND TP4 PB4 TP4 GND C10 0.1uF C11 0.1uF VCC_3 GND GND GATE4 GND VCC_5 GND GND VCC_3 C12 0.1uF C13 1000pF C14 0.1uF VREF GTL9 GTL11 GTL10 GTL_TEST VICTIM GNDVCC_5 GND GND 2KC24 1000pF C25 0.1uF VREF VCC_1.5 GND TP3 PB3 TP3 GTL2 GTL6 GTL6 GTL7 GND GND GND GND JP1 POWER VCC_5 VCC_3 VCC_1.5 GND GND GND GND GND GND VCC_1.5 VCC_5 VCC_3 GTL3