TK14600 NARROW BAND FM IF AMPLIFIER FEATURES APPLICATIONS ■ ■ ■ ■ ■ GPS Systems ■ Digital Communications Low Voltage Operation Two Stage IF Limiter Mixer Adjustable Internal Regulator TK14600 DESCRIPTION The TK14600 is a low operating voltage FM IF system designed for use in GPS receivers and other digital communications systems. This IC contains a high gain 2-stage IF limiter with an internal voltage regulator. The TK14600 is available in the SSOP-12 (MFP-12) surface mount package. MIXER INPUT OSC INPUT MIXER OUTPUT REG INPUT GND REG OUTPUT IF AMP INPUT LIMITER AMP OUTPUT VCC LIMITER AMP DECOUP LIMITER AMP INPUT IF AMP OUTPUT BLOCK DIAGRAM ORDERING INFORMATION TK14600M Tape/Reel Code ERROR AMP + Vref TAPE/REEL CODE BX: Bulk/Bag TL: Tape Left MG: Magazine LIMITER AMP IF AMP January 2000 TOKO, Inc. Page 1 TK14600 ABSOLUTE MAXIMUM RATINGS Maximum Supply Voltage .......................................... 6 V Operating Voltage Range .............................. 2.3 to 5.5 V Junction Temperature .......................................... 150 °C Power Dissipation (Note 1) ................................ 250 mW Lead Soldering Temp. (10 sec.) ......................... 235 °C Storage Temperature Range ................... -55 to +150 °C Operating Temperature Range .................. -30 to +80 °C TK14600 ELECTRICAL CHARACTERISTICS Test Conditions: VCC = 3 V, FRF = 20 MHz, FOSC = 18.9 MHz, Injection Level = -5dBm, FIF = 1.1 MHz SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS ICC Supply Current No input 2.0 2.7 3.4 mA GM Mixer Transfer Gain fRF = 20.0 MHz, 50 dBµ input fOSC = 18.9 MHz, -5 dBm input 24 30 36 dB fIN Mixer Operating Frequency Range 40 MHz GIF1 IF Amp Gain 40 dBµ input, fIF = 1.1 MHz 24 30 36 dB VOUT1 IF Amp Output Voltage 80 dBµ input, fIF = 1.1 MHz 0.22 0.33 0.44 VP-P GIF2 Limiter Amp Gain 20 dBµ input, fIF = 1.1 MHz 65 75 85 dB VOUT2 Limiter Amp Output Voltage 80 dBµ input, fIF = 1.1 MHz 0.6 1.0 1.4 VP-P fIF IF Amp, Limiter Amp Operating Frequency Range 5 MHz VR Voltage Regulator Output 2.2 V 0.1 0.1 IOUT = 10 mA 1.8 2.0 Note 1: Power dissipation is 250 mW in free air. Derate at 2.0 mW/°C for operation above 25 °C. TEST CIRCUIT V3 REG OUT VCC + V4 Test Conditions: VCC = 3 V, TA = 25 °C 24 kΩ 4.7 µF 2SA 733 Q1 100 kΩ 0.1 µF 27 kΩ 10 mA 0.01 µF 51 k Mixer SG1 (RF Input) SG2 (Local Input) V1 (IF Output) 20 MHz Non-mod 18.9 MHz Non-mod 1.1 MHz IF Amp SG3 (IF1 Input) V2 (IF1 Output) 1.1 MHz Non-mod Limiter Amp SG4 (IF2 Input) V3 (IF2 Output) 1.1 MHz Non-mod Regulator V4 (Regulator Output) SG2 ~ 0.1 µF 1 kΩ 0.1 µF 51 Ω 0.1 µF ~ SG4 51 0.01 µF 0.1 µF SG1 ~ 0.1 µF 51 Ω V1 0.1 µF 100 Ω ~ 51 Ω V2 100 kΩ SG3 VCC = 3 V + 10 µF Page 2 0.1 µF January 2000 TOKO, Inc. TK14600 TYPICAL PERFORMANCE CHARACTERISTICS MIXER FREQUENCY CHARACTERISTICS 40 MIXER THIRD ORDER PRODUCTS -20 fRF1 = 20.001 MHz fRF2 = 19.999 MHz fOSC = 19.0 MHz INJ-Level = -5 dBm fIF = 1.0 MHz INJ-Level = -5 dBm -40 LEVEL (dBm) GAIN (dB) 30 20 Desier Level -60 10 -80 0 -100 3rd Order Products 0 20 40 40 60 80 100 0 120 20 40 60 80 100 fIN (MHz) RFIN (dBµ) MIXER GAIN vs. INJECTION LEVEL IF FREQUENCY CHARACTERISTICS 80 120 Limiter Amp 60 GAIN (dB) GAIN (dB) 30 20 IF Amp 10 20 0 -40 80 -30 -20 -10 0 10 0 20 10 INJECTION LEVEL (dBm) f (MHz) GAIN vs. SUPPLY VOLTAGE VOLTAGE REGULATOR OUTPUT and SUPPLY CURRENT vs. SUPPLY VOLTAGE 5 ICC (mA), VREG (V) Limiter Amp Gain 60 GAIN (dB) 40 40 MIXER GAIN IF Amp Gain 20 4 3 ICC 2 REG OUT 1 0 0 0 2 4 VCC (V) January 2000 TOKO, Inc. 6 8 0 2 4 6 8 VCC (V) Page 3 TK14600 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) OUTPUT VOLTAGE vs. SUPPLY VOLTAGE GAIN vs. TEMPERATURE 80 1.5 Limiter Amp Gain Limiter Amp Out GAIN (dB) VOUT (VP-P) 60 1.0 IF Amp Gain 0.5 20 IF Amp Out 0 0 5 40 2 4 6 0 -40 8 0 40 60 VCC (V) TA (°C) SUPPLY CURRENT and VOLTAGE REGULATOR OUTPUT vs. TEMPERATURE OUTPUT VOLTAGE vs. TEMPERATURE 80 VOUT (VP-P) ICC (mA), VREG (V) 1.5 4 ICC 3 2 REG OUT Limiter Amp Out 1.0 0.5 1 IF Amp Out 0 -40 0 40 60 80 TA (°C) 0 -40 0 40 60 80 TA (°C) IF OUTPUT LEVEL vs. RF INPUT LEVEL -10 IF OUTPUT LEVEL -20 LEVEL (dBm) -30 -40 BW = 100 Hz VIDEO FILTER = 100 Hz -50 -60 -70 NOISE LEVEL -80 -90 -100 -110 -20 VCC = 3 V IF = 20 MHz 0 20 40 60 80 100 120 RF INPUT LEVEL (dBµ) Page 4 January 2000 TOKO, Inc. TK14600 PIN FUNCTION DESCRIPTION VCC = 3 V, fRF = 20 MHz, fOSC = 19 MHz, Injection Level: -3 dBm, fIF = 1 MHz PIN NO. 1 SYMBOL MIXER INPUT VOLTAGE INTERNAL EQUIVALENT CIRCUIT 0.95 V Mixer RF Input Pin VCC The operating frequency range is up to 40 MHz. This pin is internally terminated with a 3 kΩ resistor. 10 k 300 2 MIXER OUTPUT 2.0 V DESCRIPTION Mixer Output Pin VCC The output impedance is 1 kΩ. 1k 3 GND 4 IF AMP INPUT GND Pin 2.3 V IF Amplifier Input Pin. VCC 3.3 k 3.3 k 1k 1k 33 p 5 VCC 6 IF AMP OUTPUT The input impedance is 1 kΩ. The voltage gain is approximately 28 dB. The IF amplifier frequency range is up to 3 MHz. Power Supply Pin. The supply voltage range is 2.3 to 5.5 V. 2.05 V IF Amplifier Output VCC The output impedance is 1 kΩ. The typical level is 300 mVP-P. 1k January 2000 TOKO, Inc. Page 5 TK14600 PIN FUNCTION DESCRIPTION VCC = 3 V, fRF = 20 MHz, fOSC = 19 MHz, Injection Level: -3 dBm, fIF = 1 MHz PIN NO. 7 SYMBOL LIMITER AMP INPUT VOLTAGE INTERNAL EQUIVALENT CIRCUIT 1.85 V Limiter Amplifier Input Pin. VCC 6.8 k 6.8 k 51 k 8 LIMITER AMP DECOUPLING 1.78 V 6.8 k 51 k 9 LIMITER AMP OUTPUT 1.89 V VCC 6.8 k The input impedance is 1 kΩ. The gain of this stage is approximately 70 dB. The limiter frequency range is up to 3 MHz. Limiter Amplifier Decoupling Pin. VCC 6.8 k DESCRIPTION A 0.1 µF decoupling capacitor is connected to this pin. Limiter Amplifier Output Pin. 6.8 k The output impedance is approximately 200 Ω. The typical output level is 1 VP-P. This value is suitable for CMOS interface. 10 REGULATOR OUTPUT VCC 100 k 1k Page 6 Regulator Control Output Pin. This pin is the regulator's error amplifier output pin. This pin drives the external PNP transistor base. January 2000 TOKO, Inc. TK14600 PIN FUNCTION DESCRIPTION VCC = 3 V, fRF = 20 MHz, fOSC = 19 MHz, Injection Level: -3 dB, fIF = 1 MHz PIN NO. 11 SYMBOL VOLTAGE INTERNAL EQUIVALENT CIRCUIT REGULATOR INPUT Error Amplifier Input Pin. VCC The reference voltage of the error amplifier is approximately 1 V. Therefore, the regulator's output voltage is determined as follows: VOUT = 1.0 X (R1 + R2)/R2 REG OUT R1 R2 12 OSC INPUT 2.98 V DESCRIPTION Local Oscillator Input Pin VCC 3k 3k 22 pF APPLICATION CIRCUIT Conditions: VCC = 3 V, TA = 25 °C V3 REG VCC 2SA733 + 4.7 µF 100 kΩ 0.1 µF 0.01 µF 1 kΩ 0.01 µF 0.01 µF RF Input Frequency 20.1 MHz Local Input Frequency 19.0 MHz, Inj. Level -5 dBm IF Frequency 1.1 MHz VCC 3.0 V 100 kΩ TP1 51 k 0.1 µF SG1 ~ 51 Ω 6 4 T2 IF Coil Application (T1, T2) 1 TOKO Part Number A7LCS-12434N Center Frequency 1.1 MHz Internal Capacitor 180 pF Unloaded Q. Above 80 3 2 0.01 µF 0.1 µF 0.01 µF SG2 ~ 51 Ω 0.01 µF 3 VCC 4 2 + T1 10 µF 3 0.1 µF 4 6 1 January 2000 TOKO, Inc. Winding (1-3) (2-3) (4-6) 64T. 11T. 11T. 2 6 1 Page 7 TK14600 PACKAGE OUTLINE Marking Information SSOP-12 (MFP12) TK14600M 600 1.2 0.4 Marking 12 e1 5.4 7 4.4 AAA e 0.8 YYY Recommended Mount Pad 1 6 Lot. No. 0 ~ 10 1.7 max +0.15 -0.05 0.5 +0.15 0.3 -0.05 0.15 0 ~ 0.2 1.4 5.0 e 0.8 0.1 6.0 0.10 + 0.3 M Dimensions are shown in millimeters Tolerance: x.x = ± 0.2 mm (unless otherwise specified) Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Visit our Internet site at http://www.tokoam.com The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. Page 8 © 1997 Toko, Inc. All rights reserved Printed in the USA January 2000 TOKO, Inc. IC1299O0.0K Printed in the USA