ICs for Audio Common Use AN7337NS 7-element graphic equalizer IC for Hi-Fi audio equipment ■ Overview Unit : mm The AN7337NS is a graphic equalizer IC for high performance Hi-Fi audio equipment developed for deck. It incorporates an output buffer circuit and 7 resonance buffer circuits, and can set resonance frequency by external capacitor. 1 10 • Low distortion (max.: 0.03%) • Low noise voltage (input short circuit: max.: 30 µV[rms]) • High output voltage (typ. 9.5 V) 1.27 (0.60) Seating plane 0.40±0.25 0.65 0.1±0.1 ■ Features 1.5±0.2 5.4±0.3 7.7±0.3 11 0.15 12.6±0.3 20 0.3 0° to 10° Seating plane ■ Applications • Mini-component stereo, system component stereo SOP020-P-0300B 18 17 16 15 14 13 12 11 3 4 5 6 7 8 9 10 +VCC 19 2 GND 20 1 −VCC ■ Block Diagram 1 AN7337NS ICs for Audio Common Use ■ Pin Descriptions Pin No. Description Pin No. Description 1 In 1 11 In 6 2 NF 1 12 NF 6 3 In 2 13 In 7 4 NF 2 14 NF 7 5 In 3 15 Non-inverting input 6 NF 3 16 Inverting input 7 In 4 17 Output 8 NF 4 18 + VCC 9 In 5 19 GND 10 NF 5 20 − VCC ■ Absolute Maximum Ratings Parameter Symbol Rating Unit VCC ± 18 V ICC ± 50 mA PD 230 mW Topr −20 to +75 °C Tstg −55 to +125 °C Supply voltage Supply current Power dissipation *2 Operating ambient temperature Storage temperature *1 *1 Note) *1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature. *2 : Referring to "■ Technical Information" for power dissipation at Ta = 75°C, use the circuit under the conditions of the VCC × ICC is not exceeding the PDmax. ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VCC ± 4.0 to ± 18.0 V ■ Electrical Characteristics at VCC = ±15 V, Ta = 25°C Parameter Total circuit current Voltage gain FLAT Voltage gain BOOST Symbol Min Typ Max Unit 8 12 16 mA − 0.6 − 0.3 0 dB 10.4 12.0 14.0 dB GV(CUT) FLAT VO = 0 dB, VIN = −10 dBm −14.0 −12.0 −10.4 dB ICC Conditions VIN = 0 mV GV(FLAT) f = 1 kHz, VIN = −10 dBm GV FLAT VO = 0 dB, VIN = −10 dBm (BOOST) Voltage gain CUT 2 Total harmonic distortion THD f = 1 kHz, VO = 1 V[rms] − 0.002 0.03 % Max. output voltage VOM f = 1 kHz, THD = 0.1% 8.0 9.5 − V[rms] Output noise voltage VNO Input short circuit DIN AUDIO − 4 30 µV[rms] Output noise voltage VNOM Input short circuit DIN AUDIO All Boost − 31 100 µV[rms] ICs for Audio Common Use AN7337NS ■ Electrical Characteristics at VCC = ±15 V, Ta = 25°C (continued) • Design reference data Note) The following characteristics are the reference values for design and not guaranteed values. Parameter Symbol Conditions Min Typ Max Unit Resonance frequency fO1 VIN = −10 dBm, VO = GV PEAK 47.3 57 73.6 Hz Resonance frequency fO2 VIN = −10 dBm, VO = GV PEAK 93.3 113 145 Hz Resonance frequency fO3 VIN = −10 dBm, VO = GV PEAK 285 347 444 Hz Resonance frequency fO4 VIN = −10 dBm, VO = GV PEAK 0.851 1.04 1.32 kHz Resonance frequency fO5 VIN = −10 dBm, VO = GV PEAK 1.98 2.41 3.08 kHz Resonance frequency fO6 VIN = −10 dBm, VO = GV PEAK 5.23 6.37 8.14 kHz Resonance frequency fO7 VIN = −10 dBm, VO = GV PEAK 12.4 15.1 19.3 kHz ■ Technical Information • PD Ta curves of SOP020-P-0300B PD T a 900 When mounted on printed board 550 × 820 × t1.2 mm3 800 Power dissipation PD (mW) 700 600 Independent IC 500 400 300 200 100 0 0 25 50 75 100 125 Ambient temperature Ta (°C) 3