CT266 Universal VCO/Buffer for CT0 Designs Approved Product Features Applications Wide range VCO (>70 MHz) for all CT0 designs This versatile VCO circuit with buffer chip can be used Highly efficient on-chip buffer amplifier in general PLL frequency synthesizer applications such Real standby VCO with zero chip current as: Cordless phone, CATV, AM/FM Radio, TV tuning, consumption Satellite Receiver, and other telecommunication Transmit power cut-off for out-of-lock condition designs. 2.0V to 5V working voltage supply Low current consumption Excellent frequency stability vs. VDD. 8 pin narrow SOIC package Product Description The IMICT266 is extremely versatile for worldwide CT-0 cordless phone applications in matching all present associated PLL frequency synthesizer product designs. The VCO circuit provides a very easy way to build the particular high quality VCO (see application Figure 2). The on-chip highly efficient buffer amplifier will provide enough power to antenna or final power amplifier. This output is normally connected with a fixed low pass filter to remove unwanted harmonics. The VCO stand-by function stops all power consumption of the chip and buffer amplifier transmit power cut-off feature provides design choice to lock detection for monitoring transmitted power at out-of-lock condition of phase-locked loop (PLL) frequency synthesizer. This chip is designed at IMI using special CMOS processing technology that provides wide working supply voltage and low current consumption advantages. International Microcircuits,Inc. 525 Los Coches St., Milpitas, 95035 408-263-6300, FAX 408-263-6571 http:/www.imicorp.com 5/17/2000 Rev. 2.0 Page 1 of 6 CT266 Universal VCO/Buffer for CT0 Designs Approved Product 8 STP 3 SB 4 VCOin 2 High Efficiency AMPLIFIER VCO Circuit 5 Fout VCOut 1 VDD 7 6 VSS VDD Figure 1. Block Diagram Ordering Information Part Number Package Type IMICT266DZB 8 PIN NARROW SOIC (150 MIL) Marking: Example: Production Flow Industrial -40ºC TO + 85º C IMI CT266DZ Date code Lot # IMICT266DZB Flow Industrial – 40 °C to + 85°C Package Z = Narrow SOIC (150 MIL) Revision IMI Device Number International Microcircuits,Inc. 525 Los Coches St., Milpitas, 95035 408-263-6300, FAX 408-263-6571 http:/www.imicorp.com 5/17/2000 Rev. 2.0 Page 2 of 6 CT266 Universal VCO/Buffer for CT0 Designs Approved Product VDD Fout SB VCOin 1 2 3 4 8 7 6 5 STP VSS VDD VCOut Figure 2. Narrow SOIC Package Pin Assignment Pin Descriptions Pin # Pin Name Description 2 Fout This is a highly efficient output buffer of the VCO. Normally, it can be directly connected to a filter network for antenna matching purposes and to also reduce unwanted harmonics. See output power versus power supply voltage on Figure 3. 3 SB The standby pin is used to save power consumption when not using transmit signal Output power. When it is low, the VCO is disabled, the chip has zero power consumption. This pin has an internal pull-down. 4 5 VCOin VCOut These are input and output of the VCO. They are typically connected to a varactor and respective LC network to provide a tuned VCO circuit that operates between 46/49 MHz. See Figure 4 for circuit details. 7 VSS Circuit ground pin. 1 6 VDD VDD Positive power supply pins (2.0V~5V). 8 STP Transmit power cut-off control pin. When it is high, transmit power is in standby. It can be controlled by lock detection (LD) of PLL frequency synthesizer to monitor transmit power of a out-of-lock condition. It has an internal pull-down resistor. International Microcircuits,Inc. 525 Los Coches St., Milpitas, 95035 408-263-6300, FAX 408-263-6571 http:/www.imicorp.com 5/17/2000 Rev. 2.0 Page 3 of 6 CT266 Universal VCO/Buffer for CT0 Designs Approved Product Absolute Maximum Ratings This device contains circuitry to protect the inputs against damage due to high static voltages or electric field; however, precaution should be taken to avoid application for any voltage higher than the maximum rated voltages to this circuit. For proper operation, Vin and Vout should be constrained to the range: Vss<(Vin or Vout)<VDD Unused inputs must always be tied to an appropriate logic voltage level (either VSS or VDD). Voltage Relative to VSS: Voltage Relative to VDD Storage Temperature: Ambient Temperature: Recommended Operating Range: -0.3V to 7V 0.3V -65ºC to 150ºC -40ºC to 85ºC 2.0-5V Operating Characteristics VDD = 5 Volts -40ºC Characteristics Dynamic Static Symbol Pin Capacitance Input Voltages Output Voltages Output Cin Cout VIL VIH VOL VOH IOL Logic Current IOH Logic OSCout OSCout Supply Currents IDD ISB IPU Min Max 1 3.5 4.95 2.4 1.2 -2.4 -1.2 10 10 1.5 0.05 - 0ºC Min 3.5 4.95 Max 1.5 0.05 - 150 International Microcircuits,Inc. 525 Los Coches St., Milpitas, 95035 408-263-6300, FAX 408-263-6571 http:/www.imicorp.com 25ºC 85ºC Min Typ Max Min Max Unit 3.5 4.95 2.0 1.0 -2.0 -1.0 6 6 2.75 2.75 0.0 5.0 2.8 1.4 -2.8 -1.4 10 10 1.5 0.05 - 3.5 4.95 1.6 0.8 -1.6 -0.8 10 10 1.5 0.05 - pF pF Vdc - 40 50 150 - 150 Conditions Vdc mA mA mA mA µA µA VOL = 0.40 VOH = 4.0 VOH = 4.0 fosc=fin= 10 MHz fosc=fin=0 VIL = 0 5/17/2000 Rev. 2.0 Page 4 of 6 CT266 Universal VCO/Buffer for CT0 Designs Approved Product VDD = 3 Volts Characteristics Dynamic Symbol Pin Capacitance Input Voltages Output Voltages Cin Cout VIL VIH VOL VOH IOL -40ºC Min 2.1 2.95 1.6 0.8 -1.6 -0.8 Logic OSCout Output Current IOH Logic OSCout Static Max 10 10 0.9 0.05 - 0ºC Min 25ºC Max 2.95 0.05 - Min 2.1 2.95 1.4 0.7 -1.4 -0.7 Typ 6 6 1.35 1.65 0.0 3.0 2.0 1.0 -2.0 -1.0 85ºC Max 10 10 0.9 0.05 - Min 2.1 2.95 0.8 0.4 -0.8 -0.4 Max 10 10 0.9 0.05 - IDD Supply Currents ISB IPU - 150 - 40 30 150 - 150 Unit Conditions pF pF Vdc Vdc mA mA mA mA VOL = 0.30 µA µA fosc=fin=0 VOH = 2.4 VOH = 2.4 fosc=fin= 10 MHz VIL = 0 Application Figures Po (mW @ RL = 50 ohm) 16mW 15 13mW 10 9.5mW 7.0mW 5 4.0mW 2.5mW 1 1mW 2.0 VDD(V) 2.5 3.0 3.5 4.0 4.5 5.0 Figure 3. Transmit Power versus Supply Voltage International Microcircuits,Inc. 525 Los Coches St., Milpitas, 95035 408-263-6300, FAX 408-263-6571 http:/www.imicorp.com 5/17/2000 Rev. 2.0 Page 5 of 6 CT266 Universal VCO/Buffer for CT0 Designs Approved Product Application Figures (Cont.) Standby ANTENNA IMICT266 820nh 27 VDD Fout 47 STP VSS VDD SB VDD VCOin VCOut 27 680nh 10k LD 10uf 1000 100k 39 PD 27 MMBV109 Figure 4. 46/49MHz VCO Design Example Package Drawing and Dimensions 8-Pin Narrow SOIC Outline Dimensions C L E H a D A2 A A1 e B NARROW SOIC PACKAGE (150 Mil) SYMBOL A A1 A2 B C D E e H L a MIN INCHES NOM MAX MIN MILLIMETERS NOM MAX .061 .064 .068 1.55 1.63 1.73 .004 .006 .0098 0.127 0.15 0.25 .055 .058 .061 1.40 1.47 1.55 0.138 .016 .0192 0.35 0.41 0.49 .0075 .008 .0098 0.19 0.20 0.25 .189 .194 .196 4.80 4.93 4.98 .150 .155 .157 3.81 3.94 3.99 .050 BSC 1.27 BSC .230 .236 .244 5.84 5.99 6.20 .016 .025 .035 0.41 0.64 0.89 0° 5° 8° 0° 5° 8° Disclaimer International Microcircuits, Inc, reserves the right to change or modify the information contained in this data sheet, without notice. International Microcircuits, Inc., does not assume any liability arising out of the application or use of any product or circuit described herein. International Microcircuits, Inc., does not convey any license under its patent rights nor the rights of others. International Microcircuits, Inc. does not authorize its products for use as critical components in life-support systems or critical medical instruments, where a malfunction or failure may reasonably be expected to result in significant injury to the user. International Microcircuits,Inc. 525 Los Coches St., Milpitas, 95035 408-263-6300, FAX 408-263-6571 http:/www.imicorp.com 5/17/2000 Rev. 2.0 Page 6 of 6