AN7337N

ICs for Audio Common Use AN7337N 7-Element Graphic Equalizer IC for Hi-Fi s Overview The AN7337N is a graphic equalizer IC for high performance Hi-Fi developed for deck. It incorporates output buffer circuit and 7 resonance buffer circuits, can set resonance frequency by external capacitor. 1 2 3 4 5 6 7 8 9 10 6.35±0.3 3.25±0.3 20 19 18 17 16 15 14 13 12 11 Unit : mm 0.5±0.25 1.22±0.25 0.6±0.25 3.85±0.25 3.0±0.25 0.25 + 0.1 5 – 0.0 s Features • Low noise : Vno = 4µVrms typ. • Low distortion : THD = 0.002% typ. (at VO = 1Vrms) • High output power : VO (max.) = 9.5Vrms typ. (at. THD = • 0.1%) Wide operating supply voltage range : VCC (opr.) = ±4 ~ ±18V 25.0±0.3 3 ~15˚ 7.62±0.25 20-Lead DIP Package (DIP020-P-0300A) s Block Diagram –VCC 20 GND 19 +VCC 18 17 16 15 14 13 12 11 Output Buffer – + – + Resonance Section7 – + Resonance Section6 Resonance Section5 + – Resonance Section1 + – Resonance Section2 + – Resonance Section3 + – Resonance Section4 + – 1 2 3 4 5 6 7 8 9 10 2.54 AN7337N s Absolute Maximum Ratings (Ta= 25˚C) Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC ICC PD Topr Tstg ICs for Audio Common Use Rating ±18 ±50 1,000 –20 ~ + 75 –55 ~ +150 Unit V mA mW ˚C ˚C s Recommended Operating Range (Ta = 25˚C) Parameter Operating Supply Voltage Range Symbol VCC Range ±4V ~ ±18V s Electrical Characteristics (VCC = ±15V, Ta = 25˚C) Parameter Total Circuit Current Voltage Gain FLAT Voltage Gain BOOST Voltage Gain CUT Total Harmonic Distortion Max. Output Voltage Output Noise Voltage Output Noise Voltage Symbol ICC GV (FLAT) GV (Boost) GV (CUT) THD VO (max.) Vno Vno (max.) Vin= 0mV f= 1kHz, Vin= –10dBm FLAT VO = 0dB, Vin= –10dBm FLAT VO = 0dB, Vin= –10dBm f= 1kHz, VO = 1Vrms f= 1kHz, THD= 0.1% Input Short, DIN/AUDIO Input Short, ALL Boost Condition min. 8 – 0.6 10.4 –14 typ. 12 – 0.3 12 –12 0.002 8 9.5 4 31 35 100 max. 16 0 14 –10.4 0.03 Unit mA dB dB dB % Vrms µVrms µVrms s Characteristics Curve THD – VCC 0.1 VO = 1Vrms Ta = 25˚C 10 Vno – VCC VCC –Vno Input Short DIN/AUDIO Total Flat 1 Total Harmonic Distortion THD (%) VCC = ±15V f = 1kHz Ta = 25˚C THD – VO Total Harmonic Distortion THD (%) 0.05 0.03 0.02 Output Noise Voltage Vno (µV) 8 0.3 CUT 0.1 6 0.01 0.005 0.003 0.002 4 0.03 Boost 0.01 2 0.003 0.001 0 5 10 15 20 25 30 0 0 4 8 12 16 20 24 –20 0 FLAT 20 40 Supply Voltage VCC (V) Supply Voltage VCC (V) Output Voltage VO (dBV) ICs for Audio Common Use AN7337N THD – f 40 10 –1 Total Harmonic Distortion THD (%) VCC =15V Vin =1Vrms Ta =25˚C Output Voltage VO (dBV) 20 VO – f 10 –2 FLAT 0 CUT 10 –3 10 –4 – 20 10 –5 100 1k Frequency f (Hz) 10k – 40 10 100 1k 10k 100k Frequency f (Hz) s Application Circuit 560Ω 10kΩ – + VO 3.3µF 1500pF 17 3.3kΩ 16 15 +VCC + – 22µF + –VCC – 22µF 20 19 18 14 13 12 11 AN7337N 1 47kΩ 0.12µF 2 0.068µF 3 4 0.022µF 5 6 0.0068µF 7 8 0.0027µF 9 10 0.0012µF 22µF 1µF 0.33µF 0.12µF 0.056µF 0.018µF 0.0082µF 470pF Boost Flat Cut – + + – 3.3kΩ – + 3.3µF VR : 50kΩ 33µF SG AN7337N s Pin Descriptions Pin No. Pin Name Pin Voltage (V) Description ICs for Audio Common Use Equivalent Circuit 1 + VCC 1, 3, 5, 7, 9, 11, 13 Input Center electric potential (GND) Resonance circuit input pin – VCC IN 16 2 1 2, 4, 6, 8, 10, 12, 14 Negative Feedback Center electric potential (GND) Resonance circuit negative feedback pin + VCC – VCC IN 15 Non Inverting Input Center electric potential (GND) Output buffer circuit non-inverting input pin Center electric potential 33kΩ 33µF 15 16 +VCC 16 Inverting Input Center electric potential (GND) Output buffer circuit inverting input pin –VCC OUT – + 17 +VCC 17 Output Center electric potential (GND) Output buffer circuit putput pin –VCC 18 19 20 Positive Power Supply GND Negative Feedback +15 0 –15 Positive supply pin GND pin Negative supply pin