ICs for Audio Common Use AN7333S 4-Element Graphic Equalizer IC for Radio/Radio Cassette Recorder ■ Overview 5 6 10 11 19 18 17 16 15 14 12 13 • The resonance frequency can be freely set by optional selection of the capacitor capacitance. • Low distortion rate: THD = 0.04% (VCC = 5 V) • Wide dynamic range: VO = 800 mV[rms] (at Boost THD = 1%) • Low noise level: Vno = 10 µV (VCC = 5V) 0.15 0.925 0.1±0.1 ■ Features 3 4 7.2±0.3 9.4±0.3 0.3 15.3±0.3 7 8 9 24 23 22 21 20 2.0±0.2 0.4±0.25 0.45 1 2 1.27 Unit: mm The AN7333S is an integrated circuit for 4element graphic equalizers most suitable for radio cassette / portable component stereo equipment. 2-channel 4-element graphic equalizer can be configured by applying frequency setting capacitors and variable resistors externally. Non-step adjustment of the boost and the cutting quantitiy is possible by variable resistors. SOP024-P-0375A Note) The package of this product will be changed to lead-free type (SOP024-P-0375C). See the new package dimensions section later of this datasheet. ■ Block Diagram GND 24 23 1 VCC 2 Publication date: December 2001 22 21 20 19 18 17 16 15 14 13 3 4 5 6 7 8 9 10 11 12 SDC00022BEB 1 AN7333S ■ Pin Descriptions Pin No. Description Pin No. Description 1 Power supply 13 Input pin 2 Non inverting input 14 Negative feedback 3 Inverting input 15 Input pin 4 Output 16 Negative feedback 5 Negative feedback 17 Input pin 6 Input pin 18 Negative feedback 7 Negative feedback 19 Input pin 8 Input pin 20 Negative feedback 9 Negative feedback 21 Output 10 Input pin 22 Inverting input 11 Negative feedback 23 Non inverting input 12 Input pin 24 GND ■ Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage VCC 14.4 V Supply current ICC 30 mA Power dissipation PD 432 mW Operating ambient temperature *1 Topr −20 to +75 °C Tstg −55 to +125 °C Storage temperature *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. ■ Recommended Operating Range Parameter Supply voltage Symbol Range VCC1, VCC2 Unit 4 to 14 V ■ Electrical Characteristics at VCC = 5 V, Ta = 25°C Parameter Conditions Min Typ Max Unit Total circuit current Itot VIN = 0 mV 7.5 mA Voltage gain GV f = 1 kHz, VO = −10 dBV −1.5 dB Boost VO = −20 dBV is set to 0 dBV 9.5 dB Cut quantity Cut VO = −20 dBV is set to 0 dBV −9.5 dB Total harmonic distortion THD f = 1 kHz, VO = −20 dBV 0.04 % Output noise voltage Vno Rg = 0 Ω, Total Flat, DIN/AUDIO 10 µV Crosstalk CT f = 1 kHz, Rg = 0 Ω,Total Flat, VO = −20 dBV 12 µV Boost quantity 2 Symbol SDC00022BEB AN7333S ■ Terminal Equivalent Circuits Pin No. Equivalent circuit 1 2 23 Description Power supply: Supply pin In Pin voltage (V) 5 Non inverting input: Output buffer circuit non-inverting input pin 1 V 2 CC Inverting input: Output buffer circuit inverting input pin Center electric potential Output: Output buffer output pin Center electric potential Negative feedback: Resonance circuit negative feedback pin Center electric potential Input pin: Resonance circuit input pin Center electric potential 3 2 VCC 3 22 4 21 Out 3 4 VCC 5, 7, 9, 11, 14, 16, 18, 20 In 22 5 6 6, 8, 10, 12, 13, 15, 17, 19 24 VCC GND pin: SDC00022BEB 0 3 AN7333S ■ Main Characteristics THD VCC THD VO 1.6 [+30°C] fO = 1 kHz VIN = −20 dB 0.2 Boost 0.1 Cut Flat Total harmonic distortion THD (％) Total harmonic distortion THD (％) 0.3 0 5 10 15 20 Response in (dB) Frequency characteristics Boost 4 2 0 −2 −4 −6 −8 Flat −10 −12 −14 10 Cut 30 100 300 1k 3k 10k 30k 100k Frequency (Hz) 4 Boost 1.0 Cut 0.8 0.6 0.4 Flat 0.2 −30 −20 −10 Output voltage VO (dBV) Supply voltage VCC (V) 14 12 10 8 6 1.2 0 −40 0 VCC = 5 V fO = 1 kHz 1.4 SDC00022BEB 0 10 AN7333S ■ Application Circuit Example 10 µF In 2 Out 2 4.7 kΩ 10 kΩ 0.0047 µF 10 µF 50 kΩ VR 50 kΩ VR 50 kΩ VR 0.68 µF 0.056 µF 24 23 22 21 20 50 kΩ VR 0.22 µF 0.018 µF 19 18 50 kΩ VR 0.068 µF 0.0056 µF 0.022 µF 0.0018 µF 17 16 15 14 13 8 9 10 11 12 0.012 µF 470 Ω AN7333S 1 2 3 4 5 6 7 0.056 µF VCC 50 kΩ VR 0.68 µF 0.22 µF 0.068 µF 50 kΩ VR 50 kΩ VR 50 kΩ VR 10 µF 4.7 kΩ 0.0056 µF 0.018 µF 0.0047 µF 0.022 µF 50 kΩ VR 0.012 µF Out 1 10 µF 0.0018 µF 470 Ω 10 kΩ Note) VR is B or G type. • Resonant frequency fo In Out 50 kΩ VR 6.8 kΩ R1 = 1 kΩ C1 C2 R2 = 60 kΩ fO = 1 2 π √ C1 × C2 × R1 × R2 (Internal resistance: R1 = 1 kΩ, R2 = 60 kΩ) * Internal resistance: As R1 and R2 of internal resistors are common in each oscillation circuit, fO can be adjustable from an external capacitor. * Gain can be adjusted by the 50 kΩ variable resistor. SDC00022BEB 5 AN7333S ■ New Package Dimensions (Unit: mm) • SOP024-P-0375C (Lead-free package) 15.27±0.20 24 13 +0.10 0.15-0.05 7.20±0.20 9.30±0.30 (1.05) 0° to 10° 1 1.27 0.40+0.10 -0.05 12 0.10±0.10 (0.65) Seating plane 6 2.00±0.20 0.30±0.20 SDC00022BEB Seating plane Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. 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