Princeton Technology Corp. Echo Processor IC Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2399 DESCRIPTION PT2399 is an echo audio processor IC utilizing CMOS Technology which is equipped with ADC and DAC, high sampling frequency and an internal memory of 44K Digital processing is used to generate the delay time, it also features an internal VCO circuit in the system clock, thereby, making the frequency easily adjustable. PT2399 boast of very low distortion (THD<0.5%) and very low noise (No<-90dBV), thus producing high quality audio output. The pin assignments and application circuit are optimized for easy PCB layout and cost saving advantage. FEATURES ❒ CMOS Technology ❒ Least External Components ❒ Auto Reset Function ❒ Low Noise, No<-90dBV Typical ❒ Low Distortion, THD<0.5% Typical ❒ External Adjustable VCO ❒ Available in 16 pins, DIP or SO package APPLICATIONS ❒ Video Tape Recorder ❒ Video Compact Disk ❒ Television ❒ CD Player ❒ Car Stereo ❒ KARAOKE Mixer ❒ Electronic Musical Instrument ❒ Audio Equipment with Echo Processor PT2399 v1.2 1 Updated September 2000 Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Princeton Technology Corp. Echo Processor IC PT2399 PIN CONFIGURATION VCC REF AGND DGND CLK_O VCO CC1 CC0 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 LPF1-IN LPF1-OUT LPF2-OUT LPF2-IN OP2-0UT OP2-IN OP1-IN OP1-OUT PT2399 ORDER INFORMATION Part Number PT2399 PT2399S PT2399 v1.2 Package 16 Pins, DIP Package (300 mil) 16 Pins, SO Package (300 mil) 2 Updated September 2000 Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Princeton Technology Corp. Echo Processor IC PT2399 PT2399 ECHO APPLICATION CIRCUIT 4.7uF 15K 3900pF + +5V 0.1uF + 100uF 47uF + 20K 0.1uF 0.1uF Note: PT2399 v1.2 R 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 100K 4.7uF 10K 560pF + 5.6K Input 4.7K 10uF 10K 10uF + 0.01uF 50K 18K + Output 15K 560pF 0.082uF 0.082uF 10K 3300pF 10K AGND DGND PT2399 External Resistor having a value of 10 K Ohms to 50 K Ohms may be used. The recommended Resistor Value ( R ) is 10 K Ohms. When the value of the Resistor ( R ) increases, the range of the Delay Time also increases. 3 Updated September 2000 Princeton Technology Corp. Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Echo Processor IC PT2399 PT2399 SURROUND/DELAY APPLICATION CIRCUIT 15K 5600pF 4.7uF Input 100K +5V 0.1uF 100uF 47uF R 0.1uF 0.1uF 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 10K 560pF 15K 2. 7K O utput 10uF 0.01uF 15K 560pF 0.1uF 0.1uF 10K 5600pF 15K AG ND DG ND PT2399 Note: Please refer to Table 1 for the Resistor/Delay Time values PT2399 v1.2 4 Updated September 2000 Princeton Technology Corp. Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Echo Processor IC PT2399 TABLE 1: RESISTOR/DELAY TIME VALUES R 27.6K 21.3K 17.2K 14 . 3 K 12.1K 10.5K 9.2K 8.2K fck 2.0M 2.5M 3.0M 3.5M 4.0M 4.5M 5.0M 5.5M td 342ms 273ms 228ms 196ms 171ms 151ms 136.6ms 124.1ms THD 1.0% 0.8% 0.63% 0.53% 0.46% 0 . 4 1% 0.36% 0.33% R 7.2K 6.4K 5.8K 5.4K 4.9K 4.5K 4K 3.4K fck 6.0M 6.5M 7.0M 7.5M 8.0M 8.5M 9.0M 10 M td 113.7ms 104.3ms 97.1ms 92.2ms 86.3ms 81ms 75.9ms 68.1ms THD 0.29% 0.27% 0.25% 0.25% 0.23% 0.22% 0.21% 0.19% R 2.8K 2.4K 2K 1. 6 7 K 1. 4 7 K 1.28K 1.08K 894 fck 11M 12M 13M 14M 15M 16M 17M 18 M td 61.6ms 56.6ms 52.3ms 48.1ms 45.8ms 43ms 40.6ms 38.5ms THD 0.18% 0.16% 0.15% 0.15% 0.15% 0.15% 0.14% 0.14% R 723 519 288 0.5 fck 19M 20M 21M 22M td 36.6ms 34.4ms 32.6ms 31.3ms THD 0.14% 0.13% 0.13% 0.13% Note: R = External Resistor (Ohms), please refer to PT2399 Surround/Delay Time Application Circuit fck = Clock Frequency (Hz) td = Delay Time THD = Total Harmonic Distortion PT2399 v1.2 5 Updated September 2000