HT9831 315/433MHz ASK Transmitter Features · Complete UHF ASK transmitter · Low voltage operation - down to 2.0V · Frequency range 300MHz to 450MHz · Data tracking function for device wake-up · Data rates higher than 10kbps · Reference clock output · Output Power up to 10dBm · 8-pin SOP/TSSOP packages Applications · Car alarm Remote control · Multi-Media Remote Control · Wireless PIR · Remote Sensor Data Links · Remote Power Switches · Infrared Transmitter Replacement General Description HT9831 minimum ASK data rate is 10kbps which supports a more complicated control protocol. The HT9831 is a highly integrated ASK transmitter IC for remote wireless applications in the 300 to 450MHz frequency band. This transmitter IC is a true ²data-in, antenna-out² monolithic device making it very easy for users to implement a wireless system. It is only necessary to supply a crystal generated reference frequency, which is the RF carrier frequency divided by 32, and a few additional external parts to create a complete and versatile transmitter. The HT9831 is capable of delivering +9.5dBm into a 50W load. This power level is possible due to a small form factor transmitter (lossy antenna) which can operate near the maximum transmission regulation limit. The HT9831 utilises ASK/OOK - Amplitude Shift Keying/On-Off Keying- UHF receiver types from wide-band super-regenerative radios to narrow-band, high performance super-heterodyne receivers. The To minimise power consumption, the HT9831 provides a data tracking function. In the Idle Mode, the internal PLL will be switched off, but when high to low data is received the PLL will be switched on and data will be transmitted without delay. The PLL will be turned off automatically and the HT9831 will return to the Idle Mode after no data input transients have been received for more than 300ms. As there is a reference clock output for the MCU, the MCU can use its internal RC clock rather than using an additional crystal for precise timing. With these combined features the HT9831 can provide a power-saving and cost effective solution for a huge range of remote wireless applications. Block Diagram E N D IN X O U T X IN C R E F Rev. 1.20 X T A L E n a b le C o n tro l 3 2 X P L L P A P A _ O U T D iv id e r 1 November 5, 2014 HT9831 Pin Assignment X O U T 1 8 X IN D IN 2 7 V S S C R E F 3 6 P A O U T E N 4 5 V D D H T 9 8 3 1 8 S O P -A /T S S O P -A Pin Description Pin No. Pin Name External Components For 433.92MHz add18pF capacitor For 315MHz add 15pF capacitor Description 1 XOUT Crystal Fs output 2 DIN 3 CREF Output clock (Fs/65536) to MCU I/O 433.92MHz:Typ 207Hz 315MHz: Typ 150Hz 4 EN Pull high resistor High: RF always on Low: DIN high trigger RF on 5 VDD 10mF decoupling capacitor Power supply 6 PA_OUT L/C matched circuit Power amplifier output 7 VSS 8 XIN ASK data input Ground For 433.92MHz add 18pF capacitor For 315MHz add 15pF capacitor Crystal Fs input Absolute Maximum Ratings Operating Supply Voltage ....................................................................................................................VDD=2.0V~3.6V Voltage on I/O Pins .......................................................................................................................VSS-0.3 to VDD+0.3V Storage Temperature Range ..............................................................................................................-50°C to + 125°C Lead Temperature (soldering, 10 seconds)........................................................................................................+ 300°C ESD HBM ..............................................................................................................................................................±5KV ESD MM ..............................................................................................................................................................±400V Ambient Operating Temperature (TA) ....................................................................................................-40°C to +85°C Programmable Transmitter Frequency Ran.....................................................................................300MHz to 450MHz Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev. 1.20 2 November 5, 2014 HT9831 Electrical Characteristics Ta = 25°C, Freq REFOSC=13.560MHz, EN=VDD. Bold values indicate -40°C to +85°C unless otherwise noted. 1kbps data rate 50% duty cycle. RL 50W load (matched) Test Conditions Symbol Parameter Min. Typ. Max. Unit @315MHz, POUT=+10dBm ¾ 13.5 ¾ mA @433.92MHz ¾ 13.5 ¾ mA @315MHz ¾ 3.0 ¾ mA @433.92 MHz ¾ 3.0 ¾ mA @315MHz ¾ 1.0 ¾ mA @433.92 MHz ¾ 1.0 ¾ mA @315MHz * ¾ 9.5 ¾ dBm @433.92MHz * ¾ 9.5 ¾ dBm @630MHz, 2nd harm ¾ -48 ¾ dBc @945MHz, 3rd harm ¾ -60 ¾ dBc @867.84MHz, 2nd harm ¾ -45 ¾ dBc @1301.76MHz, 3rd harm ¾ -55 ¾ dBc VDD IH Data High Current IL Data Low Current ISTB EN Low & DIN Low Current Conditions 3V 3V 3V RF and Crystal Output power level Harmonics output for 315 MHz Harmonics output for 433.92MHz 3V 3V Extinction ratio for ASK 10Kbps 3V ¾ ¾ -70 ¾ dBc Data Rate 3V ¾ ¾ ¾ 50 kbps @315MHz ¾ kHz 3V ¾ <900 Occupied Bandwidth @433.92MHz ¾ <1000 ¾ kHz 100kHz from Carrier ¾ -78 ¾ dBc/Hz 1000kHz from Carrier ¾ -77 ¾ dBc/Hz 100kHz from Carrier ¾ -78 ¾ dBc/Hz 1000kHz from Carrier ¾ -76 ¾ dBc/Hz 315MHz Single Side Band Phase Noise 3V 433.92MHz Single Side Band Phase Noise 3V XTLIN, XTLOUT 3V Pin capacitance ¾ 2 ¾ pF ¾ ¾ pF 3V See application circuit C3,C4 @315MHz 15 External Capacitance @433.92MHz ¾ 18 ¾ pF 3V Standby transition from low to high ** ¾ 500 ¾ ms ASK to RF Out Response Time 3V Delta between ASK input transition from Low To High to RF output transition from low to high ¾ 1 ¾ ms @315MHz ¾ Hz 3V ¾ 150 CREF clock output frequency @433.92MHz ¾ 207 ¾ Hz Output Blanking Note: 3.3V * Depend on PC board layout ** Generally limited by crystal Rev. 1.20 3 November 5, 2014 HT9831 Timing Diagram EN >300ms~500ms 500us 300ms~500ms 300ms~500ms 10Kbps DIN 500us 315MHz/433MHz PLL PAOUT 150Hz/207Hz CREF Note: CREF output clock frequency is much lower than PLL output frequency. The figure shown above is just for presentation. State table: Note: EN DIN PAOUT CREF 0 0 0 0 0 1 300~450MHz 143~215Hz 1 0 0 143~215Hz 1 1 300~450MHz 143~215Hz PAOUT output frequency is fOSC´32 and CREF output clock frequency is fOSC/216. For example: PAOUT output frequency is 13.56MHz´32=433.92MHz and CREF output clock frequency is 13.56MHz/216 » 207Hz. Rev. 1.20 4 November 5, 2014 HT9831 Application Circuits - 315MHz (433MHz) TX Test Circuits Low Cost Application Circuit Trace ANT or l /4 wire Reference clock to MUC, etc. Rev. 1.20 5 November 5, 2014 HT9831 Package Information Note that the package information provided here is for consultation purposes only. As this information may be updated at regular intervals users are reminded to consult the Holtek website for the latest version of the package information. Additional supplementary information with regard to packaging is listed below. Click on the relevant section to be transferred to the relevant website page. · Further Package Information (include Outline Dimensions, Product Tape and Reel Specifications) · Packing Meterials Information · Carton information Rev. 1.20 6 November 5, 2014 HT9831 8-pin SOP (150mil) Outline Dimensions A 5 8 1 B 4 C C ' G H D E Symbol A Dimensions in inch Min. Nom. Max. ¾ 0.236 BSC ¾ B ¾ 0.154 BSC ¾ C 0.012 ¾ 0.020 C¢ ¾ 0.193 BSC ¾ D ¾ ¾ 0.069 E ¾ 0.050 BSC ¾ F 0.004 ¾ 0.010 G 0.016 ¾ 0.050 H 0.004 ¾ 0.010 a 0° ¾ 8° Symbol A Rev. 1.20 = F Dimensions in mm Min. Nom. Max. ¾ 6.00 BSC ¾ B ¾ 3.90 BSC ¾ C 0.31 ¾ 0.51 C¢ ¾ 4.90 BSC ¾ D ¾ ¾ 1.75 E ¾ 1.27 BSC ¾ F 0.10 ¾ 0.25 G 0.40 ¾ 1.27 H 0.10 ¾ 0.25 a 0° ¾ 8° 7 November 5, 2014 HT9831 8-pin TSSOP Outline Dimensions 8 5 E 1 1 4 E D A L A 2 e R 0 .1 0 A 1 B C L 1 y G (4 C O R N E R S ) Symbol Nom. Max. A ¾ ¾ 0.047 A1 0.002 ¾ 0.006 A2 0.031 0.039 0.041 b 0.007 ¾ 0.012 C 0.004 ¾ 0.006 D 0.114 0.118 0.122 E ¾ 0.252 BSC ¾ E1 0.169 0.173 0.177 e ¾ 0.026 BSC ¾ L 0.018 0.024 0.030 L1 ¾ 0.039 BSC ¾ y ¾ 0.004 ¾ q 0° ¾ 8° Symbol Rev. 1.20 Dimensions in inch Min. Dimensions in mm Min. Nom. Max. A ¾ ¾ 1.20 A1 0.05 ¾ 0.15 A2 0.80 1.00 1.05 b 0.19 ¾ 0.30 C 0.09 ¾ 0.16 D 2.90 3.00 3.10 E ¾ 6.40 BSC ¾ E1 4.30 4.40 4.50 e ¾ 0.65 BSC ¾ L 0.45 0.60 0.75 L1 ¾ 1.0 BSC ¾ y ¾ 0.10 ¾ q 0° ¾ 8° 8 November 5, 2014 HT9831 Copyright Ó 2014 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.20 9 November 5, 2014