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| Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 DESCRIPTION PT4450 is a high performance ASK/OOK transmitter for the Remote Keyless Entry (RKE) systems. It consists of a SAW oscillator, power amplifier, and one-shot circuit which control the SAW oscillator and power amplifier. FEATURES * * * * * * * * Highly integrated ASK/OOK transmitter High output power, 3V/+10dBm/18mA Low supply voltage (2.2V to 3.6V operation range) Low external component cost. SAW-based oscillator, frequency range from 250MHz to 500MHz On-chip one-shot circuit 50dB RF on/off ratio Available in 6 pins, SOT-23 package APPLICATIONS * * * * * * Keyless entry systems Remote control systems Garage door openers Alarm systems Security systems Wireless sensors PT4450 PRE1.0 -1- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 BLOCK DIAGRAM OSCIN VDD DIN Regulator One Shot PA Output matching network OSCOUT VSS PAOUT PT4450 PRE1.0 -2- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 PIN CONFIGURATION PIN DESCRIPTION Pin Name OSCOUT VSS PAOUT DIN VDD OSCIN I/O O G O I P I Description Oscillator output Ground connection Power amplifier output Data input, it will also be used to enable the chip Power supply Oscillator input Pin No. 1 2 3 4 5 6 DIE PAD DIAGRAM PT4450 PRE1.0 -3- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 ABSOLUTE MAXIMUM RATINGS (VSS=0V) Parameter Supply voltage Operating temperature Storage temperature Soldering temperature Soldering time Symbol VDD Topr Tstg TSLD tSLD Rating VSS -0.3 to VSS +6.0 -40 to +85 -65 to +150 255 10 Unit V Sec. RECOMMEND OPERATING CONDITIONS (VSS=0V) Parameter Supply voltage range Operating temperature Symbol VDD TA Rating Min. 2.2 -40 Typ. 3.0 25 Max. 3.6 85 Unit V PT4450 PRE1.0 -4- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VDD=3.0V, VSS=0V, DIN=3.0V. Temp=27, fRF=434MHz) Rating Symbol Condition Parameter Min. Typ. Max. DC Supply voltage Operating current (Note) Standby current RF Frequency range Power amplifier output power (Note) RF power on/off ratio Phase noise Harmonics (see Note) Data Input and One Shot Data rate Start up time One shot delay time VDD IDD Istandby fRF Pout PEXT PNOISE PHARM DRATE TON TDELAY DIN=High(CW mode); POUT=10dBm DIN=Low; TDELAY>50ms 2.2 16 250 0.5 50 3.0 +10 50 -100 -40 2 3.6 18 1 Unit V mA A 10KHz offset 2x/3x fRF 500 MHz dBm dB dBc/Hz dBc 50 200 Kbps s ms Note: Depend on power amplifier output matching. PT4450 PRE1.0 -5- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 TESTING CIRCUIT Component S1 (see Note) R1 R2 R3 L1 L2 C1 C2 C3 C4, C5 Note: S1 is a SAW resonator. Values 315MHz Band 434MHz Band 315 0 10K 470K 180n 27n 220p 12p 22p 100n 434 0 10K 470K 180n 27n 220p 4.7p 12p 100n Unit MHz H H F F F F PT4450 PRE1.0 -6- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 ORDER INFORMATION Valid Part Number PT4450 (L) Package Type 6 Pins, SOT-23 Top Code PT4450 Notes: 1. (L), (C) or (S) = Lead Free 2. The Lead Free mark is put in front of the date code PT4450 PRE1.0 -7- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 PACKAGE INFORMATION 6 PINS, SOT-23 PT4450 PRE1.0 -8- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 PT4450 PRE1.0 -9- August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Symbol A A1 A2 b b1 c c1 D E E1 e e1 L L1 L2 R R1 1 aaa bbb ccc ddd Min. 0 0.90 0.30 0.30 0.08 0.08 Typ. 1.15 0.40 0.13 2.90 BSC. 2.80 BSC. 1.60 BSC. 0.95 BSC. 1.90 BSC. 0.45 0.60 REF. 0.25 BSC. 4 10 0.15 0.20 0.10 0.20 Preliminary Max. 1.45 0.15 1.30 0.50 0.45 0.22 0.20 PT4450 0.30 0.60 0.10 0.10 0 5 0.25 8 15 PT4450 PRE1.0 - 10 - August, 2007 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw SAW-based ASK/OOK Transmitter IC Preliminary PT4450 Notes: 1. Dimension and tolerancing per ASME Y14.5M-1994. 2. Dimension in Millimeters. 3. Dimension D does not include mold flash, protrusion or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.25mm per end. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm per side. D and E1 dimensions are determined at datum H. 4. The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. D and E1 dimensions are determined at datum H. 5. Datums A & B to be determined at datum H. 6. These dimensions apply to the flat section of the lead between 0.08mm and 0.15mm from the lead tip. 7. Dimension "b" does not include dambar protrusion. Allowable dambar protrusion shall be 0.08mm total in exceed of the "b" dimension at maximum material condition. The dambar cannot be located on the lower radius of the foot. Minimum space between protrusion and an adjacent lead shall not be less than 0.07mm. 8. Details of the pin 1 identifier are optional, but must be located within the zone indicated. 9. Refer to JEDEC MO-178 Variation AB JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION PT4450 PRE1.0 - 11 - August, 2007 |
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