Ordering number : EN*A0338 Bi-CMOS IC LV2256PTT 315MHz Band FSK/ASK Wireless Transmitter IC Overview The LV2256PTT is a 315MHz band FSK/ASK wireless transmitter IC. Features • Operating frequency range: 305 to 325MHz • Miniature package: MSOP10 (0.5mm lead pitch) Functions • PLL circuit • VCO • Power amplifier • FSK/ASK mode switching • Transmitter output level switching Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max 4.5 V Maximum input voltage VIN max VCC+0.3 V VOUT max VCC+0.3 V Maximum output voltage Allowable power dissipation Pd max ≤ 85°C, Mounted on a circuit board* 115 mW Operating temperature Topr -40 to +85 °C Storage temperature Tstg -55 to +150 °C Recommended operating supply voltage range VCC 2.0 to 3.5 V *: Circuit board: 20×10×0.8mm paper phenolic printed circuit board Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor products described or contained herein. D0606 SY IM No.A0338-1/5 LV2256PTT Electrical Characteristics at Ta = +25°C, VCC = 3.0V, no modulation Parameter Symbol Ratings Conditions min Current drain 1 ICCO FVCO = 315MHz, when the transmitter output is 0dBm Current drain 2 ICCPS Power saving mode VCO frequency range FVCO Crystal oscillator frequency range F X tal Charge pump current ICP typ Unit max 7 1 305 V X tal = -6dBm mA 100 nA 325 MHz 22 MHz 18 ±100 VCP = 1.5V µA Transmitter Output at Ta = +25°C, VCC = 3.0V, no modulation, FVCO = 315MHz, 50Ω termination Parameter Symbol Ratings Conditions min typ unit max Transmitter output 1 TxPwr1 When the pin 6 resistor is 10kΩ -11.5 Transmitter output 2 TxPwr2 When the pin 6 resistor is 4.7kΩ -1.5 Transmitter output 3 TxPwr3 When the pin 6 resistor is 1kΩ +8 -2.5 -1 -10 -8.5 dBm 0 1.5 dBm +10 +12 dBm 0.5 dB [Ta = 25°C, VCC = 2.2V, no modulation, FVCO = 315MHz, 50Ω termination] Transmitter output 4 TxPwr4 When the pin 6 resistor is 4.7kΩ Modulation Frequency at Ta = +25°C, VCC = 3.0V Parameter Symbol Ratings Conditions min typ Unit max Modulation frequency 1 Fmodf FSK mode 20 kHz Modulation frequency 2 Fmoda ASK mode 20 kHz Package Dimensions unit : mm (typ) 3297 3.0 6 0.5 3.0 4.9 10 1 5 0.2 0.125 1.1 max (0.85) 0.5 0.08 (0.5) SANYO : MSOP10(150mil) No.A0338-2/5 LV2256PTT Pin Functions Pin No. Pin 1 F/A Function FSK/ASK mode switching. Low: FSK, high: ASK 2 MODIN Modulation signal input 3 FSKSW FSK modulation external capacitor switching input 4 XIN 5 PWS 6 PCONT 7 GND 8 PAOUT 9 VCC 10 NC Crystal oscillator connection Power saving mode control. Low: Normal operation, high: power saving mode Transmitter output level adjustment external resistor connection GND Transmitter output VCC Unused pin Block Diagram and Pin Assignment LV2256PTT F/A 1 10 NC MODIN 2 9 VCC FSKSW 3 8 PAOUT XIN 4 7 GND 6 PCONT PWS 5 VCO X tal OSC 1/2 1/32 LOOP FILTER PHASE DET CHARGE PUMP PA Top view No.A0338-3/5 LV2256PTT Application Circuit Example 1: FSK Specifications FSK/ASK switching (L:FSK/H:ASK) 1 10 3V MODIN max 20kHz,3Vp-p 2 9 3 X tal 19.68MHz 4 VCO X tal OSC 1/2 5 1/32 LOOP FILTER PHASE DET CP PA 8 Matching circuit 314.88MHz 7 6 Transmitter output level adjustment POWER SAVE (Low: Normal operation, high: power saving mode) Application Circuit Example 2: ASK Specifications FSK/ASK switching (L:FSK/H:ASK) 1 10 2 9 3V MODIN max 20kHz,3Vp-p 3 X tal 19.68MHz 4 VCO X tal OSC 1/2 5 1/32 LOOP FILTER PHASE DET CP PA 8 Matching circuit 314.88MHz 7 6 Transmitter output level adjustment POWER SAVE (Low: Normal operation, high: power saving mode) No.A0338-4/5 LV2256PTT Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor products (including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Semiconductor Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 2006. Specifications and information herein are subject to change without notice. PS No.A0338-5/5