CSP2510DPG8

IDTCSP2510D 3.3V PHASE-LOCK LOOP CLOCK DRIVER 0°C TO 85°C TEMPERATURE RANGE IDTCSP2510D 3.3V PHASE-LOCK LOOP CLOCK DRIVER ZERO DELAY BUFFER FEATURES: DESCRIPTION: • Phase-Lock Loop Clock Distribution for Synchronous DRAM Applications • Distributes one clock input to one bank of ten outputs • Output enable bank control • External feedback (FBIN) pin is used to synchronize the outputs to the clock input signal • No external RC network required for PLL loop stability • Operates at 3.3V VDD • tpd Phase Error at 166MHz: < ±150ps • Jitter (peak-to-peak) at 166MHz: < ±75ps @ 166MHz • Spread Spectrum Compatible • Operating frequency 50MHz to 175MHz • Available in 24-Pin TSSOP package The CSP2510D is a high performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a PLL to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. It is specifically designed for use with synchronous DRAMs. The CSP2510D operates at 3.3V. One bank of ten outputs provide low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50 percent, independent of the duty cycle at CLK. The outputs can be enabled or disabled via the control G input. When the G input is high, the outputs switch in phase and frequency with CLK; when the G input is low, the outputs are disabled to the logic-low state. Unlike many products containing PLLs, the CSP2510D does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost. Because it is based on PLL circuitry, the CSP2510D requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required, following power up and application of a fixed-frequency, fixed-phase signal at CLK, as well as following any changes to the PLL reference or feedback signals. The PLL can be bypassed for the test purposes by strapping AVDD to ground. The CSP2510D is specified for operation from 0°C to +85°C. This device is also available (on special order) in Industrial temperature range (-40°C to +85°C). See ordering information for details. APPLICATIONS: • SDRAM Modules • PC Motherboards • Workstations FUNCTIONAL BLOCK DIAGRAM 11 G 3 Y0 4 Y1 5 Y2 8 Y3 9 Y4 15 Y5 16 Y6 17 CLK 24 Y7 PLL FBIN 20 13 Y8 21 AVDD Y9 23 12 0ººC TO 85ººC TEMPERATURE RANGE FBOUT OCTOBER 2001 1 c 2001 Integrated Device Technology, Inc. DSC-5874/3 IDTCSP2510D 3.3V PHASE-LOCK LOOP CLOCK DRIVER 0°C TO 85°C TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating VDD VI(1) Supply Voltage Range Input Voltage Range VO(1,2) Voltage range applied to any output in the high or low state Max Unit –0.5 to +4.6 –0.5 to +6.5 V V –0.5 to VDD + 0.5 V AGND 1 24 CLK VDD 2 23 AVDD Y0 3 22 VDD IIK (VI