TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 D D D D PW PACKAGE (TOP VIEW) Stable Oscillation Using External Resistor Lock Frequency Range: - 35 MHz to 75 MHz (VDD = 5 V 0.25 V, TA = - 20C to 85C) - 28 MHz to 50 MHz (VDD = 3 V 0.15 V, TA = - 20C to 85C) Operating Free-Air Temperature Range, TA = - 20C to 85C 8-Pin Thin Shrinked Small-Outline Package LOGIC VDD VCO OUT FREFINPUT PFD OUT 1 2 3 4 8 7 6 5 VCO VDD BIAS VCOIN GND description The TLC2940 is a high-performance analog voltage-controlled oscillator (VCO) using Texas Instruments 0.8-m CMOS process. The VCO oscillating operation can be performed by an external bias resistor connected to the internal oscillation circuitry, and the oscillation frequency range is set by this bias resistor. The lock frequency range for PLL applications is from 35 MHz to 75 MHz (over operating free-air temperature range, VDD = 5 V 5%), and from 28 MHz to 50 MHz (over operating free-air temperature range, VDD = 3 V 5%). The stable analog PLL can be configured within these frequency ranges. The device is available in an 8-pin TSSOP surface-mount package. The PLL block is configured using a counter, a required LPF, and a phase frequency detector (PFD). AVAILABLE OPTIONS PACKAGE TA TSSOP (PW) - 20C to 85C TLC2940IPW functional block diagram BIAS RESISTOR Output Buffer Bias Circuit VCO OUT VCO CONTROL VCOIN TLC2940 VCO OUT VCO BIAS VCOIN Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 Terminal Functions TERMINAL NAME NO. BIAS 7 FREFINPUT GND I/O{ DESCRIPTION M Bias supply terminal for internal VCO. The resistor should be located between VDD and this terminal. 3 I Not used. This terminal should be tied to ground. 5 PS Ground LOGIC VDD 1 PS Power supply for the internal logic circuitry (PFD portion, input/output portion). It is recommended that this terminal is separated from the VCO supply voltage terminal. PFD OUT 4 O Not used. This terminal should be unconnected (open). VCOIN 6 I VCO control voltage input. VCO OUT 2 O VCO output. This terminal is tied to a low level at inhibit status. VCO VDD 8 PS Supply voltage for VCO analog portion. I: Input, O: Output, PS: Power supply/GND, M: Others detailed description The TLC2940 is an analog VCO IC that generates a frequency that is a multiple of a reference frequency for a PLL block configuration. Normally, a PLL block is composed of a VCO, a phase frequency detector, counter logic, and a loop filter. The following is a description for the analog VCO of the TLC2940. The built-in analog VCO is composed of a ring oscillator portion for oscillation operation and a bias control portion to generate a bias level to supply to the ring oscillator. The oscillation operation is performed by a bias resistor (RBIAS) connected between the bias control (pin 7) and the supply voltage (pin 8). The VCO oscillation frequency is determined by this resistor value, RBIAS, that is, the oscillation frequency decreases as the resistor value increases, and the oscillation frequency increases as the resistor value decreases. The lock frequency range is from 35 MHz to 75 MHz with a RBIAS of 1.5 k to 4.3 k at 5-V operation and from 28 MHz to 50 MHz with a RBIAS of 1.5 k to 2.7 k at 3-V operation over the recommended supply voltage and operating free-air temperature range. Refer to the curves shown in the typical characteristics section for the lock frequency ranges with varying RBIAS values. VCO Oscillation VCO Oscillation Frequency Range Bias Resistor (RBIAS) VCO Control Voltage (VCOIN) Figure 1. VCO Oscillation Frequency Range Setting 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 absolute maximum ratings over operating free-air temperature (unless otherwise noted) Supply voltage (any supply), VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage range (any input), VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to VDD + 0.5 V Input current (any input), II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Output current (any output), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Continuous total power dissipation (TA = 25C or below), PD (see Note 2) . . . . . . . . . . . . . . . . . . . . . . 700 mW Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 20C to 85C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to network GND terminals. 2. For operation above 25C free-air temperature, derate linearly at the rate of 5.6 mW/C. recommended operating conditions PARAMETER Supply voltage voltage, VDD (any supply, supply see Notes 3 and 4) MIN NOM MAX 3-V operation 2.85 3 3.15 5-V operation 4.75 5 5.25 Input voltage, VI (inputs except VCO IN) 0 Output current, IO (any output) 0 VCO control voltage at VCO IN 1 RBIAS = 1.5 k 42 VDD-0.5 50 RBIAS = 1.8 k 37 47 RBIAS = 2.2 k 33 45 RBIAS = 2.7 k 28 42 RBIAS = 1.5 k 65 75 RBIAS = 2.4 k 50 65 RBIAS = 3.3 k 43 56 RBIAS = 4.3 k 35 50 3-V operation 1.5 2.7 5-V operation 1.5 4.3 -20 85 3 V operation 3-V Lock frequency 5 V operation 5-V resistor RBIAS VCO oscillation frequency setting resistor, VDD 2 Operating free-air temperature, TA UNIT V V mA V MHz k C NOTES: 3. It is recommended that the logic supply terminal (LOGIC VDD) and the VCO supply terminal (VCO VDD) should be at the same voltage and separate from each other. 4. The bypass capacitor should be located as close as possible to each power supply. 5. The FREFINPUT (pin 3) and PFD OUT (pin 4) terminals are input/output terminals preset for logic function respectively. In normal operation, the FREFINPUT shoud be tied to GND and PDF OUT should be left unconnected (open). POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 electrical characteristics over recommended operating free-air temperature range, VDD = 3 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 2.4 UNIT VOH VOL High-level output voltage, VCO OUT Low-level output voltage, VCO OUT IOH = - 2 mA IOL = 2 mA V Zi(VCOIN) IDD(VCO) Input impedance at VCOIN VCO IN = 1/2 VDD Supply current See Note 6 fosc Oscillation frequency RBIAS = 2.4 k, VCOIN = 1/2 VDD tr Output rise time VCOIN = 0 V, RBIAS =2.4 k , CL = 15 pF 13 ns tf Output fall time VCOIN = 0 V, RBIAS =2.4 k , CL = 15 pF 6 ns Output duty ratio RBIAS = 2.4 k, VCOIN = 1/2 VDD, See Note 7 (fosc) Temperature coefficient of oscillation frequency VCOIN = 1/2 VDD, RBIAS = 2.4 k, TA = -20C to 85C 0.07 %/C kSVS(fosc) Supply voltage coefficient of oscillation frequency VCOIN = 1.5 V, RBIAS = 2.4 k, VDD = 2.7 V to 3.3 V 0.01 %/mV 0.3 10 32 40% V M 6 10 mA 40 48 MHz 44% 60% NOTES: 6. VCOIN = 1/2 VDD, RBIAS = 2.4 k, current through pin 1 and 8. 7. The maximum and minimum value of this parameter are not production tested. electrical characteristics over recommended operating free-air temperature range, VDD = 5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX High-level output voltage, VCO OUT Low-level output voltage, VCO OUT IOH = - 2 mA IOL = 2 mA Zi(VCOIN) IDD(VCO) Input impedance at VCOIN VCOIN = 1/2 VDD Supply current See Note 6 fosc Oscillation frequency RBIAS = 2.4 k, VCOIN = 1/2 VDD tr Output rise time VCOIN = 0 V, RBIAS =2.4 k , CL = 15 pF 5.8 ns tf Output fall time VCOIN = 0 V, RBIAS =2.4 k , CL = 15 pF 3.2 ns Output duty ratio RBIAS = 2.4 k, VCOIN = 1/2 VDD, See Note 7 (fosc) Temperature coefficient of oscillation frequency VCOIN = 1/2 VDD, RBIAS = 2.4 k, TA = -20C to 85C kSVS(fosc) Supply voltage coefficient of oscillation frequency VCOIN = 2.5 V, RBIAS = 2.4 k, VDD = 4.5 V to 5.5 V NOTES: 6. VCOIN = 1/2 VDD, RBIAS = 2.4 k, current through pin 1 and 8. 7. The maximum and minimum value of this parameter are not production tested. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 4.5 UNIT VOH VOL V 0.5 10 45 40% V M 16 30 mA 65 85 MHz 46% 60% 0.06 %/C 0.005 %/mV TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 PARAMETER MEASUREMENT INFORMATION 90% 90% 10% 10% VCO OUT tr tf VCO Output Waveform Figure 2. VCO Output Waveform POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 TYPICAL CHARACTERISTICS VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE 80 VDD = 3 V RBIAS = 1.5 k 80 -25C 25C 70 60 50 85C 40 30 20 VCO Oscillation Frequency - MHz VCO Oscillation Frequency - MHz 90 VDD = 3 V RBIAS = 1.8k 70 - 25C 60 25C 50 85C 40 30 20 10 10 0 0 0 0.6 1.2 1.8 2.4 VCO Control Voltage - V 3.0 0 0.6 Figure 3 VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE 70 70 VDD = 3 V RBIAS = 2.2 k 60 - 25C VCO Oscillation Frequency - MHz VCO Oscillation Frequency - MHz 3.0 Figure 4 VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE 25C 50 85C 40 30 20 VDD = 3V RBIAS = 2.7 k 60 25C 50 40 85C 30 20 - 25C 10 10 0 0 0.6 2.4 1.2 1.8 VCO Control Voltage - V 3.0 0 0 Figure 5 6 1.2 1.8 2.4 VCO Control Voltage - V 0.6 1.2 1.8 2.4 VCO Control Voltage - V Figure 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3.0 TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 TYPICAL CHARACTERISTICS VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE 140 160 120 VCO Oscillation Frequency - MHz VCO Oscillation Frequency - MHz 140 -25C 85C 100 80 60 40 120 25C 100 80 85C 60 40 20 20 0 0 0 1.0 3.0 4.0 2.0 VCO Control Voltage - V 0 5.0 1.0 5.0 VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE VCO OSCILLATION FREQUENCY vs VCO CONTROL VOLTAGE 100 120 25C VDD = 5 V RBIAS = 4.3 k 90 VCO Oscillation Frequency - MHz VDD = 5 V RBIAS = 3.3 k 100 80 85C 60 40 80 70 60 25C 50 85C 40 30 20 -25C -25C 20 3.0 4.0 2.0 VCO Control Voltage - V Figure 8 Figure 7 VCO Oscillation Frequency - MHz -25C VDD = 5 V RBIAS = 2.4 k 25C VDD = 5 V RBIAS = 1.5 k 10 0 0 0 1.0 2.0 3.0 4.0 VCO Control Voltage - V 5.0 0 1.0 3.0 4.0 2.0 VCO Control Voltage - V 5.0 Figure 10 Figure 9 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 TLC2940 HIGH-PERFORMANCE CMOS VOLTAGE-CONTROLLED OSCILLATOR SLAS244 - OCTOBER 1999 MECHANICAL DATA PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PIN SHOWN 0,32 0,17 0,65 14 0,13 M 8 0,15 NOM 4,70 4,30 6,70 6,10 Gage Plane 0,25 1 7 0- 8 0,70 0,40 A Seating Plane 1,20 MAX 0,10 0,10 MIN PINS ** 8 14 16 20 24 28 A MAX 3,30 5,30 5,30 6,80 8,10 10,00 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064 / B 10/94 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. 8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. 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