Communication ICs FM IF detector for cordless phones BA4116FV The BA4116FV is an IC with mixing circuit, IF circuit, FM detector circuit, RSSI circuit, and noise detector circuit. As it can operate at low voltages, it is ideal for use in cordless phones. Applications Cordless phones, amateur short wave radios, and other portable wireless equipment Features 1) Input frequencies of 10MHz to 150MHz can be accommodated. 2) Low-voltage operation. (1.8 to 5.5V) 3) Excellent temperature characteristic. Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 52 4) High sensitivity; 12dB SINAD sensitivity = 8dBµVEMF (50 Ω) 5) High intercept point. (–11dBm) 6) Small package used. (0.65mm pitch) Communication ICs BA4116FV Block diagram 53 Communication ICs Pin descriptions 54 BA4116FV Communication ICs BA4116FV 55 Communication ICs 56 BA4116FV Communication ICs BA4116FV Electrical characteristics (unless otherwise noted, Ta = 25C, VCC = 2.0V, fIN (Mix) = 21.7MHz, fIN (IF) = 450kHz, ∆f = ±1.5kHzdev, fm = 1kHz, all AC levels open (EMF) display) 57 Communication ICs Measurement circuit 58 BA4116FV Communication ICs BA4116FV Application example 59 Communication ICs BA4116FV FAttached components FDetermining the filter amplifier constant (multi-layer recovery band pass filter) f0: Center frequency Q: Center frequency f0 / band width BW A0: I / O gain The reference resistance R0 is determined as C1 = C2 = C0. R0 = 1 / 2πf0 S C0 R1 = R0 S Q / A0 R2 = R0 / [2Q - (A0 / Q)] R3 = 2R0 S Q The Filter gain can be adjusted by varying R1, but with the A0 > 1 design, please be aware that influence from the open loop characteristic of the amplifier causes offset in the center frequency f0. FElectrical characteristic curves 60 Communication ICs BA4116FV 61 Communication ICs External dimensions (Units: mm) 62 BA4116FV Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.0