TDA2320 PREAMPLIFIER FOR INFRARED REMOTE CONTROL SYSTEMS DESCRIPTION The TDA2320is a monolithic integratedcircuit in Dip package especially designedto amplify the IR signal in remote controlled TV or radio sets. It directly interfaces the digital control circuitry. The TDA2320 incorporates a two-stage amplifier with excellent sensitivity and high noise immunity. It can work with a single 5V supply voltage and flash or carrier transmission modes as provided for example by the M709A/M710A/MOS transmitters. The TDA2320 is particularly intended to be used in conjunction with the M104 and M206 + M3870 remote control receivers. N DIP8 (Plastic Package) ORDER CODES Temperature Range Part Number o o -40 C, +105 C TDA2320 Package N • PIN CONNECTIONS (top view) Output 1 1 Inverting Input 1 2 - Non-inve rting Input 1 3 + GND October 1997 4 8 VCC 7 Output 2 - 6 Inve rting Input 2 + 5 Non-inverting Input 2 1/5 TDA2320 SCHEMATIC DIAGRAM (1/2 TDA2320) Inverting Input Non-inverting Input VCC R1 R5 R3 Q13 Q8 Q6 Q3 R6 Q11 R7 D3 Q14 Q9 D5 Output Q4 R8 Q5 Q2 Q7 C2 Q12 D1 Q16 Q15 Q17 Q1 D4 Q10 D2 C1 R2 R4 GND ABSOLUTE MAXIMUM RATINGS Symbol VCC Supply Voltage Ptot Total Power Dissipation at Tamb = 70 C Tstg, Tj 2/5 Parameter o Storage and Junction Temperature Value Unit 20 V 400 mW –40 to 150 o C TDA2320 ELECTRICAL CHARACTERISTICS VCC = 5V, Tamb = 25oC (unless otherwise specified) (refer to the test circuits) Symbol VCC ICC Iib Vio Iio Avd VOPP GBP SR en SVR Parameter Supply Voltage Supply Current VCC = 20V Input Bias Current Input Offset Voltage Rs < 10kΩ Input Offset Current Large Signal Voltage Gain f = 1kHz f = 100kHz DC Output Voltage Swing Gain-bandwidth Product f = 100kHz Slew Rate RL = 2kΩ Equivalent Input Noise Voltage f = 40kHz Rs = 10kΩ Supply Voltage Rejection Ratio f = 100Hz Min. 4 Typ. Max. 20 0.8 100 2 500 0.5 15 64 nA mV nA dB 70 30 2.5 1.5 Unit V mA V MHz 3 V/µs 1.5 nV √ Hz 20 dB 80 APPLICATION CIRCUIT FLASH MODE PREAMPLIFIER R5 1kΩ C1 10µF R1 1MΩ R2 39kΩ C5 0.1µF 1N4148 Q1 BC109 C3 22nF D2 6 R6 47kΩ 1/2 TDA2320 R3 100kΩ R10 100kΩ C4 R8 47nF 3.3kΩ 7 2 BPW41 D1 R4 3.3kΩ 8 1/2 TDA2320 5 C2 22nF +5V R7 12kΩ 3 1 4 +5V R9 2.7kΩ 3/5 TDA2320 APPLICATION INFORMATION Figure 1 : Application Circuit for Carrier Transmission Mode 1kΩ +5V 10µF 2.2kΩ BPW41 1N4148 5 100kΩ 1N4148 100nF 1/2 TDA2320 6 1N4148 8 7 3 1/2 TDA2320 4 1 10kΩ M206 2 15kΩ 15kΩ 220Ω 220Ω 2x1N4148 22nF 22nF Figure 2 : IR Transmitter Using M709 or M710 Figure 3 : MMC II - PLL TV Frequency Synthetizer TDA2320 33Ω +9V 445 to 510kHz 220µF 16V 2xLD271 BC377 1.5kΩ M709 or M710 INT LOCAL KEYBOARD DIGITAL FILTER 4MHz DATA BUS BD237 M3870 2x1N4148 4MHz cK 68Ω KEYBOARD 3 MODE 6 L201 TELETEXT ADDRESS ON/OFF 4/5 ANALOGUE OUTPUTS BAND TDA2320 PM-DIP8.EPS PACKAGE MECHANICAL DATA 8 PINS -PLASTIC DIP A a1 B b b1 D E e e3 e4 F i L Z Min. Millimeters Typ. 3.32 0.51 1.15 0.356 0.204 Max. 1.65 0.55 0.304 10.92 9.75 7.95 Min. 0.020 0.045 0.014 0.008 Max. 0.065 0.022 0.012 0.430 0.384 0.313 2.54 7.62 7.62 3.18 Inches Typ. 0.131 0.100 0.300 0.300 6.6 5.08 3.81 1.52 0.125 0260 0.200 0.150 0.060 DIP8.TBL Dimensions Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publ ication are subject to change without notice. This pub lication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. ORDER CODE : 1997 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdo m - U.S.A. 5/5