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Ordering number : EN*A0338
Bi-CMOS IC
LV2256PTT
Overview Features
315MHz Band FSK/ASK Wireless Transmitter IC
The LV2256PTT is a 315MHz band FSK/ASK wireless transmitter IC.
* 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 = 25C
Parameter Maximum supply voltage Maximum input voltage Maximum output voltage Allowable power dissipation Operating temperature Storage temperature Recommended operating supply voltage range Symbol VCC max VIN max VOUT max Pd max Topr Tstg VCC 85C, Mounted on a circuit board* Conditions Ratings 4.5 VCC+0.3 VCC+0.3 115 -40 to +85 -55 to +150 2.0 to 3.5 Unit V V V mW C C V
*: Circuit board: 20x10x0.8mm 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 = +25C, VCC = 3.0V, no modulation
Parameter Current drain 1 Current drain 2 VCO frequency range Crystal oscillator frequency range Charge pump current Symbol ICCO ICCPS FVCO F X tal ICP V X tal = -6dBm VCP = 1.5V Conditions min FVCO = 315MHz, when the transmitter output is 0dBm Power saving mode 305 18 100 Ratings typ 7 1 100 325 22 max mA nA MHz MHz A Unit
Transmitter Output at Ta = +25C, VCC = 3.0V, no modulation, FVCO = 315MHz, 50 termination
Parameter Transmitter output 1 Transmitter output 2 Transmitter output 3 Symbol TxPwr1 TxPwr2 TxPwr3 Conditions min When the pin 6 resistor is 10k When the pin 6 resistor is 4.7k When the pin 6 resistor is 1k -11.5 -1.5 +8 Ratings typ -10 0 +10 max -8.5 1.5 +12 dBm dBm dBm unit
[Ta = 25C, VCC = 2.2V, no modulation, FVCO = 315MHz, 50 termination] Transmitter output 4 TxPwr4 When the pin 6 resistor is 4.7k -2.5 -1 0.5 dB
Modulation Frequency at Ta = +25C, VCC = 3.0V
Parameter Modulation frequency 1 Modulation frequency 2 Symbol Fmodf Fmoda FSK mode ASK mode Conditions min Ratings typ max 20 20 kHz kHz Unit
Package Dimensions
unit : mm (typ) 3297
3.0 10 6
3.0 4.9
1 (0.5) 0.5
5 0.2 0.125
(0.85)
SANYO : MSOP10(150mil)
0.08
1.1 max
0.5
No.A0338-2/5
LV2256PTT
Pin Functions
Pin No. 1 2 3 4 5 6 7 8 9 10 Pin F/A MODIN FSKSW XIN PWS PCONT GND PAOUT VCC NC FSK/ASK mode switching. Low: FSK, high: ASK Modulation signal input FSK modulation external capacitor switching input 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 Function
Block Diagram and Pin Assignment
F/A
LV2256PTT
1 10 NC
MODIN
2
9
VCC
FSKSW
3
VCO
PA
8
PAOUT
XIN
4
X tal OSC
1/2
1/32
LOOP FILTER
7
GND
PHASE DET PWS 5
CHARGE PUMP 6 PCONT
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
VCO
PA
8
Matching circuit
314.88MHz
4
X tal OSC
1/2
1/32
LOOP FILTER
7
5
PHASE DET
CP
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 3V
MODIN max 20kHz,3Vp-p
2
9
3 X tal 19.68MHz
VCO
PA
8
Matching circuit
314.88MHz
4
X tal OSC
1/2
1/32
LOOP FILTER
7
5
PHASE DET
CP
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

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