RTC6721 Preliminary Data Sheet JAN 2006 Rev. Date From Description V.002 V.003 10/3/2005 10/31/2005 R2200 R2200 V.004 12/1/2005 17/1/2006 R2200 R2100 Original Modify the following items: 1. Add pin 14, 17, 22 description; 1 for power down and 0 for power on 2. Add Absolute Maximum Ratings 1. Delete Lock detector in Block diagram 2. Revise Lock and Lock_L_B pin description to NC 3.Revise supply voltage to 3.3V Applicant: R2200 Document Title: Data Sheet of RTC6721 Approvals: R2000: S.C. Wong R2500: C.J. Chao R2100: J.Y. Tsai Marketing: Jack Chang Contents: 6 Attach: 0 Total Page: 7 File Format: Word R2200: W.K. Deng R2300: T.S. Liou Document No.: RTC6721-DST-003 ☆ Signature on file in DC ☆ www.richwave.com.tw Specifications subject to change without notice Rev V.004 Preliminary Confidential Proprietary 1 RTC6721 Preliminary Data Sheet JAN 2006 RTC6721 CMOS Audio Demodulator Product Description The RTC6721 is a dual-channel of 6MHz and 6.5MHz FM demodulator for wireless audio and analog FM application. The chip includes PLL based audio demodulator and audio amplifier providing 1Vpp audio output. This device may be connected with RTC6711 as a total solution for wireless AV center application. The device is available in a 24-pin QFN package. Features 3.3V power supply 6/6.5 MHz sound FM demodulator CMOS technology On-chip VCO and PLL 24-pin leadless QFN package Audio amp embedded Application AV Sender Baby Monitor Wireless Audio Wireless Earphone www.richwave.com.tw Specifications subject to change without notice Rev V.004 Preliminary Confidential Proprietary 2 RTC6721 Preliminary Data Sheet JAN 2006 FM2 PD_AU VBG_10K FM1 VD1 23 22 21 20 19 18 VD2 1 Audio Demoulation 17 VSS 16 LOCK_L_B VSS 15 14 5 PD_AMP AO2 LOCK PD_BUF 13 VSS 2 PD_AMP 3 Audio Demoulation VD_VCO1 4 VDD_VCO2 24 Block Diagram AO1 AUDIOAMP 6 PD_AMP IN2 7 8 9 10 11 12 IP2 FIR2 VSS FIR1 IP1 IN1 AUDIOAMP www.richwave.com.tw Specifications subject to change without notice Rev V.004 Preliminary Confidential Proprietary 3 RTC6721 Preliminary Data Sheet JAN 2006 Pin Descriptions PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 NAME VD_VCO2 VSS VSS VSS AO2 IN2 IP2 FIR2 VSS FIR1 IP1 IN1 AO1 I/O Supply In Analog GND Analog GND Analog GND Analog Out Analog In Analog In Analog Out Analog GND Analog Out Analog In Analog In Analog Out 14 PD_BUF Digital IN 15 16 LOCK LOCK_L_B Digital Out Digital Out 17 PD_AMP Digital In 18 19 20 21 VD_VCO1 VD1 FM1 VBG_10K Supply In Supply In Analog In Analog In 22 PD_AU Digital IN 23 24 FM2 VD2 Analog Out Supply In FUNCTION 3.3V VDD for audio demod VCO2 VSS for audio demod2 VSS for audio demod2 VSS for audio demod2 OUTPUT for Audio amp2 Negative input for Audio amp2 Positive input for Audio amp2 Audio Demod2 loop filter VSS for audio demod1 Audio Demod1 loop filter Positive input for Audio amp1 Negative input for Audio amp1 OUTPUT for Audio amp1 Power Down of internal audio buffer 0: power on; 1: power down (internal pull-high) NC NC Power Down of Audio amp 0: power on; 1: power down 3.3V VDD for audio demod VCO1 3.3V VDD for Audio Demo1 Audio1 input 10K resistor for bias current generation Power down for audio 0: power on; 1: power down Audio2 input 3.3V VDD for Audio Demo2 www.richwave.com.tw Specifications subject to change without notice Rev V.004 Preliminary Confidential Proprietary 4 RTC6721 Preliminary Data Sheet JAN 2006 ELECTRICAL SPECIFICATIONS (1) Absolute Maximum Ratings SYMBOL PARAMETER Tstr Totr Storage Temperature Range Operating Temperature Range Vdd Vlog VRX Supply Voltage Logic control signal RX IF input Ratings UNIT -65 to +150 -40 to +85 °C °C V V V -0.5 to +5 -0.5 to +5 -2 to +2 The maximum rating must not be exceeded at any time. Do not operate the device under conditions outside the above ratings. (2) DC Electrical Characteristics SYMBOL PARAMETER CONDITION MIN. TYP. MAX. UNIT -40 3.1 85 3.5 °C V mA uA Tj VDD33 Temperature Range 3.3V Supply Voltage I Power consumption TT 25C, 3.3V 25 3.3 20 I_pd Power down current leakage TT 25C, 3.3V 1 10 TYP. MAX. (3) Demod Specifications VD_VCO1=VD_VCO2=VC1=VC2=3.3V SYMBOL PARAMETER Carrier_Freq Phase noise RF Input frequency 6KM/6.5MHz Output signal level Signal after video amplifier (output impendence >= 1Kohm) THD S/N Total harmonic distortion output 1Vpp (1KHz tone) Audio SNR (as reference design,) With pre-emphasis/ de-emphasis CONDITION 1KHz offset Fmod: 1KHz tone Frequency deviation: ±25Khz Load: > 1Kohm Fmod: 1KHz tone Frequency deviation: ±25Khz Load: > 1Kohm Fmod: 1KHz tone Frequency deviation: ±25Khz Load: > 1Kohm www.richwave.com.tw Specifications subject to change without notice Rev V.004 MIN. UNIT 6/6.5 62 MHz dBc/Hz 1 Vpp 0.6 % 47 dB Preliminary Confidential Proprietary 5 RTC6721 Preliminary Data Sheet JAN 2006 PACKAGE QFN 4X4, 24 pins www.richwave.com.tw Specifications subject to change without notice Rev V.004 Preliminary Confidential Proprietary 6 RTC6721 Preliminary Data Sheet www.richwave.com.tw Specifications subject to change without notice Rev V.004 JAN 2006 Preliminary Confidential Proprietary 7