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| ICs for Audio Common Use AN7531SA Headphone amplifier IC for portable equipment I Overview AN7531SA is an audio signal processing IC in which bass boost amplifiers, ALC circuit and beep circuit are built in the headphone amplifiers for use in portable equipment. Its headphone output block is using the center amplifier method which eliminates the need for coupling capacitor so that the circuit is most suitable for rationalization of audio circuit. 7.80.3 24 13 Unit: mm 6.10.3 8.10.3 (0.5) 0.5250.1 1 12 +0.1 0.15-0.05 I Features * Output coupling capacitor is not required (Center amplifier method) * Built-in bass boost amplifiers * ALC circuit * Built-in mute circuit * Built-in beep circuit * With mixed output pin of power amplifier (0.625) 0.22+0.1 -0.05 0.5250.1 1.20.2 0.65 Seating plane SSOP024-P-0300B Note) The package of this product will be changed to lead-free type (SSOP024-P-0300E). See the new package dimensions section later of this datasheet. I Applications * Portable CD and MD players, etc. I Block Diagram 24 23 22 21 20 19 18 17 16 15 14 13 BST SW Bias Standby SW Mute SW Beep ATT SW C-amp. SW 10 11 1 2 3 4 5 6 7 8 9 ALC det. 12 0.10.1 Publication date: December 2001 SDC00038CEB 1 AN7531SA I Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Description Bass boost amplifier NF ch.1 and ch.2-mixed output pin Ripple filter Center amplifier output control SW Supply pin ch.2 output pin Center amplifier output pin ch.1 output pin GND (output) Mixed output pin of power amplifier ALC input pin ALC detection pin Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Description Attenuation SW ch.1 input pin ch.2 input pin GND (input) Beep sound input pin Mute time-constant pin Mute control pin Standby control pin Bias output pin Bias input pin Bass boost control pin Bass boost amplifier output pin I Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *3 *1 *2 Symbol VCC ICC PD Topr Tstg Rating 4.6 200 370 -25 to +75 -55 to +125 Unit V mA mW C C Operating ambient temperature Storage temperature *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: Without signal. *3: Ta = 75C, mounted on standard board (Refer to the Application Notes). I Recommended Operating Range Parameter Supply voltage Symbol VCC Range 1.8 to 4.5 Unit V 2 SDC00038CEB AN7531SA I Electrical Characteristics at Ta = 25C Parameter Standby current Quiescent current 1 Quiescent current 2 Voltage gain 1 Voltage gain 2 Channel balance Maximum output power Total harmonic distortion Output noise voltage Channel cross-talk Ripple rejection Mute attenuation Beep sound output voltage Boosting amount ALC detection level Symbol ISTB ICQ1 ICQ2 GV1 GV2 CB PO THD VNO CT RR MT VBEEP BST VALC Conditions VIN = 0 mV, STB: On VIN = 0 mV, C-CUP: On VIN = 0 mV, C-CUP: Off VOUT = -22 dBV, ATT: On VOUT = -22 dBV, ATT: Off VOUT = -22 dBV THD = 10%, VCC = 2 V VOUT = -12.2 dBV Rg = 600 VOUT = -12.2 dBV VCC = 1.8 V, fr = 100 Hz, Vr = -20 dBV VOUT = -12.2 dBV VBEEP-IN = 0 dBV VOUT = -30 dBV, f = 100 Hz VIN = -20 dBV Min 5.5 14 -1.0 5.0 30 64 68 -56 9.7 Typ 0.1 1.5 2.0 8.3 15.9 0 9.0 0.1 -94.5 50 72 78 -51 11.7 Max 5 3.0 4.0 10.5 18 1.0 0.5 -88 -46 13.7 Unit A mA mA dB dB dB mW % dBV dB dB dB dBV dB dBV -41.5 -39.5 -37.5 Note) Condition: VCC = 2.4 V, RL = 16 , f = 1 kHz, Rg = 10 k, STB: On, Mute: Off, C-CUP: Off, ATT: Off, ALC: Off, BST: Off *1: Measurement using A curve filter *2: Measurement using 30 kHz LPF I Application Notes 1. PD Ta curves of SSOP024-P-0300B PD T a 900 800 740 700 Mounted on standard board (glass epoxy: 50 mm x 50 mm x t0.08 mm) Rth(j-a) = 135.1C/W Power dissipation PD (mW) 600 500 400 390 300 200 100 0 0 25 50 75 100 125 Independent IC without a heat sink Rth(j-a) = 256.4C/W Ambient temperature Ta (C) SDC00038CEB 3 AN7531SA I Application Notes (continued) 2. Main characteristics ICC VCC (STB: 0 V, Mute: On) 4.0 3.5 VIN = 0 mV RL = 16 Rg = 10 k STB = 0 V/VCC Mute = 0 V/VCC ALC = Off BST = Off ATT = On/off CCUP = Off/on 4.5 4 ICC6 (BTL) ICC VCC Power supply current ICC (mA) Power supply current ICC (mA) 3.0 2.5 2.0 1.5 1.0 0.5 3.5 ICC (SEPP) BST = On 3 2.5 2 1.5 1 0.5 0.0 1.0 ICC (BTL) BST = On VIN = 0 mV RL = 16 Rg = 10 k STB = VCC Mute = 0 V 3.0 3.5 ALC = Off BST = On/off ATT = On/off CCUP = Off ICC5 (SEPP) ICC4 (BTL) Mute = On ICC3 (C-CUP) Mute = On ICC1 (C-CUP) STB = 0 V, ICC2 (BTL) STB = 0 V 0.0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1.5 2.0 2.5 4.0 4.5 5.0 Power supply voltage VCC (V) Power supply voltage VCC (V) ICC VCC (ALC: On, ATT: On) 4.0 ICC (BTL) ALC = On 3.5 15 14 ICC7, 8 VCC Power supply current ICC (mA) Power supply current ICC (mA) VIN = 0 mV RL = 16 3.0 Rg = 10 k STB = VCC Mute = 0 V 2.5 2.0 1.5 ALC = On/off BST = Off ATT = On/off CCUP = Off/on ICC (BTL) ATT = On 13 ICC8 (BTL) 12 11 10 9 8 7 6 VOUT = 0.5 mV f = 1 kHz RL = 16 Rg = 10 k STB = VCC Mute = 0 V ICC7 (SEPP) ALC = Off BST = Off ATT = On/off CCUP = Off ICC (C-CUP) ALC = On 1.0 0.5 0.0 1.0 ICC (C-CUP) ATT = On 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Power supply voltage VCC (V) Power supply voltage VCC (V) ICC PO 100 VCC = 2.4 V f = 1 kHz RL = 16 Both ch. input Rg = 10 k STB = VCC Mute = 0 V ALC = Off BST = Off ATT = Off CCUP = Off ICQ VSTB 3.0 VCC = 2.4 V VIN = 0 mV RL = 16 Rg = 10 k Mute = 0 V ALC = Off BST = Off ATT = Off CCUP = Off Power supply current ICC (mA) Power supply current ICC (mA) 10.00 2.5 2.0 ICC (BTL) 10 1.5 ICC (C-CUP) 1.0 0.5 1 0.01 0.10 1.00 0.0 0.0 0.5 1.0 1.5 2.0 2.5 Output power PO (mW) Standby voltage VSTB (V) 4 SDC00038CEB AN7531SA I Application Notes (continued) 2. Main characteristics (continued) PO VCC f = 1 kHz 100 THD = 10% RL = 16 90 Both ch. input Rg = 10 k 80 STB = VCC Mute = 0 V 70 60 50 40 Ch.1, Ch.2 30 20 10 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.01 0.10 1.00 10.00 100.00 THD PO 100 VCC = 2.4 V f = 1 kHz RL = 16 Both ch. input Rg = 10 k A-curve filter STB = VCC Mute = 0 V ALC = Off BST = Off ATT = Off CCUP = Off 110 Maximum output power PO (mW) Total harmonic distortion THD (%) ALC = Off BST = Off ATT = Off CCUP = Off 10 1 10 kHz ch.1, ch.2 1 kHz ch.1, ch.2 0.1 100 Hz ch.1, ch.2 Power supply voltage VCC (V) Output power PO (mW) PO , THD VIN (ALC: On) 0 -5 -10 VCC = 2.4 V f = 1 kHz RL = 16 Both ch. input Rg = 10 k STB = VCC Mute = 0 V ALC = Off/on BST = Off ATT = Off CCUP = Off 10 GV frequency -10 VCC = 2.4 V VIN = -46 dBV RL = 16 Both ch. input Rg = 10 k STB = VCC Mute = 0 V ALC = Off BST = On/off ATT = Off CCUP = Off -15 -20 -25 -30 -35 -40 -45 Output voltage GV (dBV) Output voltage VO (dBV) VO (ALC : Off) 8 Total harmonic distortion THD (%) -15 -20 6 THD (ALC : Off) 4 GV (BST : On) -25 -30 GV (BST : Off) -35 VO (ALC : On) 2 THD (ALC : On) -50 -70 -60 -50 -40 -30 -20 -10 0 0 -40 10 100 1k 10k 100k Input voltage VIN (dBV) Frequency f (Hz) Beep VIN 0 -10 VCC = 2.4 V VIN = 0 mV RL = 16 Rg = 10 k STB = VCC Mute = 0 V/VCC ALC = Off BST = Off ATT = Off CCUP = Off GV VCC 20 18 GV1 (ch.1 ATT : Off), GV1 (ch.2 ATT : Off) Beep output voltage VBEEP (dBV) -30 -40 -50 -60 -70 -80 -90 -100 0 200 400 600 800 VBEEP (ch.2 Mute : Off) Output voltage gain GV (dB) -20 16 14 12 10 8 6 4 2 GV2 (ch.1 ATT : On), GV2 (ch.2 ATT : On) VOUT = -20 dB f = 1 kHz RL = 16 Both ch. input Rg = 10 k STB = VCC Mute = 0 V ALC = Off BST = Off ATT = On/off CCUP = Off VBEEP (ch.1 Mute : Off) 1 000 1 200 1 400 1 600 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Beep input voltage VBEEP-IN (mV[p-p]) Power supply voltage VCC (V) SDC00038CEB 5 AN7531SA I Application Notes (continued) 2. Main characteristics (continued) CT, MT frequency 100 90 80 100 90 100 90 80 MT (ch.2) CT, MT VIN 100 90 80 70 60 50 CT (ch.1) 40 30 20 10 0 10 VCC = 2.4 V f = 1 kHz RL = 16 Both ch. input Rg = 10 k A-curve filter STB = VCC Mute = 0 V ALC = Off BST = Off ATT = Off CCUP = Off 40 CT (ch.2) 30 20 10 0 1 000 Channel crosstalk CT (dB) Channel crosstalk CT (dB) Mute effective MT (dB) 70 60 50 40 30 20 10 0 10 VCC = 2.4 V VOUT = -20 dBV RL = 16 Both ch. input Rg = 10 k A-curve filter STB = VCC Mute = 0 V/VCC ALC = Off BST = Off ATT = Off CCUP = Off MT (ch.2) 70 60 70 60 50 CT (ch.1) CT (ch.2) 50 40 30 20 10 100 1k 10k 0 100k 100 Frequency f (Hz) Input voltage VIN (mV) RR VCC 90 85 VTH-STB VCC 2 80 75 70 65 60 55 50 1.0 RR (ch.1), RR(ch.2) Standby thereshold voltage VTH-STB (V) Ripple rejection ratio RR (dB) 1.5 Vr = -20 dBV fr = 100 Hz THD = 10% RL = 16 Both ch. input Rg = 10 k A-curve filter STB = VCC Mute = 0 V ALC = Off BST = Off ATT = Off CCUP = Off 1 VIN = 0 mV RL = 16 Rg = 10 k Mute = 0 V ALC = Off BST = Off ATT = Off CCUP = Off 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 1.0 Power supply voltage VCC (V) Power supply voltage VCC (V) VTH-MUTE VCC 2 2.0 VTH-ALC , VTH-BST VCC 2 VIN = 0 mV STB = VCC RL = 16 Mute = 0 V Rg = 10 k ATT = Off CCUP = Off 1.5 1.5 VIN = 0 mV RL = 16 Rg = 10 k STB = VCC ALC = Off BST = Off ATT = Off CCUP = Off Mute thereshold voltage VTH-MUTE (V) ALC thereshold voltage VTH-ALC (V) 1.5 1 VTH-ALC 1.0 1 0.5 0.5 VTH-BST 0.5 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.0 1.0 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Power supply voltage VCC (V) Power supply voltage VCC (V) 6 SDC00038CEB BST thereshold voltage VTH-BST (V) Mute effective MT (dB) MT (ch.1) 80 MT (ch.1) AN7531SA I Application Notes (continued) 2. Main characteristics (continued) VTH-CCUP , VTH-ATT VCC 4.0 2 CCUP thereshold voltage VTH-CCUP (V) 3.0 2.5 2.0 1.5 1.5 VTH-CCUP 1 VTH-ATT 1.0 0.5 0.0 1.0 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.5 Power supply voltage VCC (V) I Application Circuit Examples 1. Center output method (without output capacitor) 1) At bass boosting Standby Mute BST Off On Beep In2 In1 On Off ATT 10 k 10 k 22 F ATT thereshold voltage VTH-ATT (V) 3.5 VIN = 0 mV RL = 16 Rg = 10 k STB = VCC Mute = 0 V ALC = Off BST = Off Off On On Off 0.068 F 18 0.22 F 47 k 23 24 22 10 F 21 20 19 17 16 15 14 BST SW Bias Standby SW Mute SW Beep C-amp. SW 10 0.068 F 2 2.2 F 10 F SP2 SP1 VCC Off ALC 22 F 16 16 0.1 F On 1 F 11 1 3 4 5 6 7 8 9 12 13 ATT SW ALC det. SDC00038CEB 7 AN7531SA I Application Circuit Examples (continued) 1. Center output method (without output capacitor) (continued) 2) No bass boosting 22 F Standby Mute Off On On Off Beep In2 In1 On Off 10 k 10 k ATT 10 F 18 0.22 F 24 23 22 21 20 19 17 16 15 14 BST SW Bias Standby SW Mute SW Beep C-amp. SW 10 VCC SP2 SP1 On Off ALC 2. Output transformer less (OTL) (Output capacitors are necessary) Standby Mute BST Off On 0.068 F Beep In2 In1 On Off ATT 22 F Off On On Off 18 0.22 F 47 k 10 F 10 k 10 k 17 16 15 14 13 24 23 22 21 20 BST SW Bias Standby SW 19 Mute SW 22 F 1 F 16 16 0.1 F 11 1 2 3 4 5 6 7 8 9 Beep C-amp. SW 10 11 2.2 F 1 0.068 F 2 10 F 3 4 5 1 F 470 F 6 7 8 470 F 9 VCC 8 SP2 SP1 Off ALC SDC00038CEB 22 F 16 16 0.1 F On 12 12 13 ATT SW ALC det. ATT SW ALC det. AN7531SA I New Package Dimensions (Unit: mm) * SSOP024-P-0300E (Lead-free package) 7.800.30 (0.325) 24 13 (1.00) 6.100.30 8.100.30 0.15-0.05 +0.10 0 to 10 (0.325) 0.65 Seating plane 0.100.10 1.200.20 1 (0.50) 12 0.22+0.10 -0.05 Seating plane SDC00038CEB 9 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. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company. Please read the following notes before using the datasheets A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited. 2001 MAR |
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