TLC2942

TLC2942 HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997 D Dual TLC2932 by Multichip Module (MCM) DB PACKAGE Technology (TOP VIEW) D Voltage-Controlled Oscillator (VCO) Section: – Complete Oscillator Using Only One External Bias Resistor (RBIAS) – Recommended Lock Frequency Range: 22 MHz to 50 MHz (VDD = 5 V ±5%, TA = – 20°C to 75°C, ×1 Output) 11 MHz to 25 MHz (VDD = 5 V ±5%, TA = – 20°C to 75°C, ×1/2 Output) – Output Frequency . . . ×1 and ×1/2 Selectable LOGIC VDD1 1 SELECT1 2 VCO OUT1 3 FIN–A1 4 FIN–B1 5 PFD OUT1 6 LOGIC GND1 7 GND 8 NC 9 NC 10 38 VCO VDD1 37 BIAS1 36 VCOIN1 35 VCO GND1 34 VCOINHIBIT1 33 PFD INHIBIT1 32 NC 31 GND 30 NC 29 NC D Includes a High-Speed Edge-Triggered Phase Frequency Detector (PFD) With Internal Charge Pump D Independent VCO, PFD Power-Down Mode NC 11 GND 12 LOGIC VDD2 13 SELECT2 14 VCO OUT2 15 28 NC 27 GND 26 VCO VDD2 25 BIAS2 24 VCOIN2 description FIN–A2 16 FIN–B2 17 23 VCO GND2 22 VCOINHIBIT2 The TLC2942 is a multichip module product that PFD OUT2 18 21 PFD INHIBIT2 uses two TLC2932 chips. The TLC2932 chip is LOGIC GND2 19 20 NC composed of a voltage-controlled oscillator and an edge-triggered phase frequency detector. The NC – No internal connection oscillation frequency range of each VCO is set by an external bias resistor (RBIAS) and each VCO output can be a ×1 or ×1/2 output frequency. Each high speed PFD with internal charge pump detects the phase difference betw...