SA2078 PRESET EQUALIZER CIRCUIT DESCRIPTION SA2078 is a 3 mode preset equalizer circuit. This IC has built-in one middle boost and two type high/low boost equalizers and flat mode. These operation modes are controlled by internal switch. FEATURES * Dual channel * 3 mode preset equalizer * Few external parts * Operating supply voltage range: VCC (opr)=7.5~14V (Tamb=25°C) APPLICATIONS DIP-16 ORDERING INFORMATION * Radio/cassette recorders and car audio systems,etc… Device SA2078 Package DIP-16-300-2.54 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATING (Tamb=25°C) Characteristics Supply Voltage Power Dissipation Symbol VCC PD (note) Operating Temperature Topr -25~75 °C Storage Temperature Tstg -55~150 °C HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rating 14 750 Unit V mW REV:1.0 2004.10.28 Page 1 of 4 SA2078 ELECTIVAL DHARACTERISTICS (Unless otherwise specified, VCC=10V, Rg=620Ω, RL=10KΩ, f=1kHz, Normal mode, Tamb=25°C) Characteristics Operating Voltage Quiescent Current Symbol Test condition VCC -ICCQ1 Normal mode (A=L, B=L) ICCQ2 Rock mode (A=H, B=L) Min. 7.5 --- Typ. -2.5 4.2 Max. 14.0 5.0 9.0 ICCQ3 Classic mode (A=L, B=H) -- 4.6 9.0 ICCQ4 Pop mode (A=H, B=H) -- 4.5 9.0 Unit V mA Voltage Gain GV -- 12.0 14.0 16.0 dB Maximum Output Voltage Vom THD=1% 2.5 3.0 -- Vrms Total Harmonic Distortion THD VIN=200mVrms -- 0.01 0.1 % Ripple Rejection Ratio R.R. Vrip=300mVrms, frip=100Hz -- -56 -- dB Cross Talk C.T. VIN=350mVrms -- -70 -60 dB -- 20 30 µVrms Output Noise Voltage Vno Rg=620Ω, DIN AUDIO filter Notes: “H”input 2.0V~VCC; “L”input 0~0.8V or open PIN CONFIGUREATIONS IN1+ 1 16 IN2+ OUT1 2 15 OUT2 FB1_3 3 14 FB2_3 FB1_2 4 13 FB2_2 IN1- 5 12 IN2- FB1_1 6 11 FB2_1 VCC 7 10 CONTROL2 GND 8 9 CONTROL1 PIN DESCRIPTION Pin no. 1 2 3 4 5 6 7 8 9 10 11 Pin name IN1+ OUT1 FB1_3 FB1_2 IN1FB1_1 VCC GND CONTROL1 CONTROL2 FB2_1 Description Positive input of channel 1 Output of channel 1 Feedback setting 3 of channel 1 Feedback setting 2 of channel 1 Negative input of channel 1 Feedback setting 1 of channel 1 VCC GND Modes setting Feedback setting 1 of channel 2 (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2004.10.28 Page 2 of 4 SA2078 (Continued) Pin no. 12 13 Pin name IN2FB2_2 Negative input of channel 2 Feedback setting 2 of channel 2 Description 14 15 16 FB2_3 OUT2 IN2+ Feedback setting 3 of channel 2 Output of channel 2 Positive input of channel 2 FUNCTION DESCRIPITION By setting A (pin10) and B (pin9) high (H) or low (L) Normal: A=L, B= L, Flat (No equalizing) Rock: A=H, B= L, High/low boost-1 Classic: A=L, B= H, High/low boost-2 Pop: A=H, B= H, mid boost HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2004.10.28 Page 3 of 4 SA2078 TYPICAL APPLICATION CIRCUIT PACKAGE OUTLINE DIP-16-300-2.54 UNIT: mm 1.52 0.25±0.05 7.62 6.35±0.25 2.54 15 degree 4.36MAX 19.55±0.30 3.00MIN 0.5MIN 0.46 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn 1.27MAX REV:1.0 2004.10.28 Page 4 of 4