ML GHz Super Low Power Dual Modulus Prescaler

Transcription

1 Legacy evice: Motorola M2052 ML2052. GHz Super Low Power ual Modulus Prescaler MEL PLL OMPONENTS 64/65, 28/29 UL MOULUS PRESLER SEMIONUTOR TEHNIL T The ML2052 is a super low power dual modulus prescaler used in phaselocked loop applications with low power dissipation of 2.7 mw at a minimum supply voltage of 2.7 V. The ML2052 can be used with MOS synthesizers requiring positive edges to trigger internal counters such as Motorola's M45xxx or Lansdale s ML45xxx series in a PLL to provide tuning signals up to. GHz in programmable frequency steps. ivide Ratio ontrol () permits selection of a 64/65 or 28/29 divide ratio as desired. The Modulus ontrol (M) selects the proper divide number after has been biased to select the desired divide ratio.. GHz Toggle Frequency The ML2052 is Pin and Functionally ompatible with the Motorola or ON Semiconductor M2022 Low Power.0 m Typical 2.0 m Maximum, V = 2.7 to 5.5 Vdc Short Setup Time (tset) 6 ns GHz Modulus ontrol put Level is ompatible with Standard MOS and TTL Maximum put Voltage Should e Limited to 6.5 Vdc Operating Temperature Range T = 40 to 85 FUNTIONL TLE 8 SO 8 = -5P PLSTI PKGE SE 75 (SO8) SO 8 M2052 ML2052-5P Note: Lansdale lead free (Pb) product, as it becomes available, will be identified by a part number prefix change from ML to MLE. P ONNETIONS V OUT (Top View) 8 7 N 6 M 5 Gnd M ivide Ratio H H 64 H L 65 L H 28 L L 29 NOTES:. : H = V, L = Open. logic L can also be applied by grounding this pin, but this is not recommended due to increased power consumption. 2. M: H = 2.0 V to V, L = GN to 0.8 V. MXIMUM RTGS haracteristic Symbol Range Unit Power Supply Voltage, Pin 2 V 0.5 to 7.0 Vdc Operating Temperature Range T 40 to 85 Storage Temperature Range Tstg 65 to 50 Modulus ontrol put, Pin 6 M 0.5 to 6.5 Vdc Page of 5

2 LNSLE Semiconductor, c. ELETRIL HRTERISTIS (V = 2.7 to 5.5 V, T = 40 to 85, unless otherwise noted.) haracteristic Symbol Min Typ Max Unit Toggle Frequency (Sine Wave put) ft GHz Supply urrent (Pin 2) I m Modulus ontrol put High (M) VIH 2.0 V V V Modulus ontrol put Low (M) VIL Gnd 0.8 V ivide Ratio ontrol put High () VIH2 V 0.5 V V V V V ivide Ratio ontrol put Low () VIL2 Open Open Open Output Voltage Swing (Note 2) (L = 8.0 pf, RL = 3.3 kω) Vout 0.8. VPP Modulus Setup Time M to 00 MHz tset 6 ns put Voltage Sensitivity MHz MHz Output urrent (Note ) V = 2.7 V, L = 8.0 pf, RL = 3.3 kω V = 5.0 V, L = 8.0 pf, RL = 7.2 kω Vin NOTES:. ivide ratio of GHz 2. Valid over voltage range 2.7 to 5.5 V; R L = 3.3 V = 2.7 V; R L = 7.2 V = 5.0 V IO mvpp m Figure. Logic iagram (ML2052) Figure 2. Modulus Setup Time M Prop. elay Out M M Setup M E F G H S Out M Release Modulus setup time M to out is the M setup or M release plus the prop delay. Figure 3. Test ircuit V = 2.7 to 5.5 V Sine Wave Generator V 3 50 Ω OUT 2 M M put GN RL L EXTERNL OMPONENTS = 2 = 000 pf 3 = 0. µf L = 8.0pF (cluding Scope and jig capacitance) RL = 3.3 V = 2.7 V RL = 7.2 V = 5.0 V Page 2 of 5

3 LNSLE Semiconductor, c. Figure 4. Typical put Impedance versus put Frequency 300 R MHz OHMS jx Frequency (MHz) Page 3 of 5

4 LNSLE Semiconductor, c. Figure 5.. Generic block diagram showing prescaler connection to PLL device Prescaler PLL ML2052 Fout M in Fin M ML4546 ML4558 ML4559 VO Loop Filter Figure 5 shows a generic block diagram for connecting a prescaler to a PLL device that supports dual modulus control. pplication note N535 decribes using a twomodulus prescaler technique.y using prescaler higher frequencies can be achieve than by a single MOS PLL device. Page 4 of 5

5 LNSLE Semiconductor, c. OUTLE IMENSIONS E H 0.25 M M SO = -5P (ML2052-5P) PLSTI PKGE SE (SO8) ISSUE T NOTES:. IMENSIONG N TOLERNG PER SME Y4.5M, IMENSIONS RE MILLIMETER. 3. IMENSION N E O NOT LUE MOL PROTRUSION. 4. MXIMUM MOL PROTRUSION 0.5 PER SIE. 5. IMENSION OES NOT LUE MR PROTRUSION. LLOW LE MR PROTRUSION SHLL E 0.27 TOTL EXESS OF THE IMENSION T MXIMUM MTERIL ONITION. e 0.25 M S S SETG PLNE 0.0 h X 45 θ L MILLIMETERS IM M MX E e.27 S H h L θ 0 7 Lansdale Semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Lansdale does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Typical parameters which may be provided in Lansdale data sheets and/or specifications can vary in different applications, and actual performance may vary over time. ll operating parameters, including Typicals must be validated for each customer application by the customer s technical experts. Lansdale Semiconductor is a registered trademark of Lansdale Semiconductor, c. Page 5 of 5