ICs for Digital Still Camera AN2905FHQ Sound input/output interface IC for digital still camera ■ Overview 9.00±0.20 7.00±0.20 25 24 48 13 1 (0.75) 0.50 12 0.20±0.05 0.10 M 1.40±0.10 1.70 max. 7.00±0.20 9.00±0.20 (0.75) 37 ■ Features (1.00) 0.15±0.05 • Functions required for the sound pre- and post-processings are integrated on a single chip • The built-in microphone amp. and microphone power supply • A built-in 0.5 W BTL amp. • Built-in SP power save and electronic volume functions • A beep circuit with electronic volume • A built-in internal microphone amp. on/off function • A built-in AGC switch • A built-in AGC to a speaker amp. (Prevents the sound distortion, trembling sound and wire breakdown of the speaker at excessively high voltage signal input) Unit: mm 36 0.10±0.20 The AN2905FHQ is a sound input/output interface IC which is optimum for incorporation of sound functions in a digital still camera. The sound pre-processing prior to the digital processing and sound post-processing after DAC are integrated on a single chip. This IC is effective to make the equipment compact. Seating plane 0° to 10° 0.50±0.20 LQFP048-P-0707A ■ Applications • Digital still camera (DSC) ■ Application Circuit Power supply for microphone Recorder output A/D converter Microphone input Speaker Playback input D/A converter Line output Beep input Publication date: August 2001 SDB00078AEB 1 AN2905FHQ ■ Application Circuit Example 10 kΩ 25 26 27 28 29 Recorder output 30 31 AGND 100 kΩ 4.7 µF 32 35 36 0.47 µF 33 0.47 µF 10 kΩ 34 VREF 0.47 µF 0.47 µF 47 kΩ −26 dBS 37 +28 dB 39 10 µF 10 µF +4.90 V VCCH SP power save on/off −12.3 dBS 19 42 SP_VCC VCC 43 18 VREFH −7 dBS Electronic volume 46 Vol. CTL SP power save AGC Det. 47 AGND 16 15 From D/A converter AGC on/off 17 LPF +3.10 V HPF changeover SW Playback input EVR_CTL EVR mute 14 48 13 + 10 µF +4.30 V 2V 20 Microphone power supply AGND 45 Line output Microphone amp. on/off 21 44 2.2 µF 22 VREF 40 41 1 µF AGC −67 dBS 10 µF 0.22 µF Microphone input 0.47 µF 23 10 µF 0.47 µF HPF changeover SW Standby changeover Det. 38 0.47 µF Gain adjustment −12.3 dBS 24 To A/D converter Electronic volume VREF-SP 2 12 11 10 9 8 7 6 5 4 SDB00078AEB 0.47 µF 4.7 µF 100 kΩ 0.47 µF 0.47 µF 0.47 µF Beep input AGND 10 µF 3 2 6Ω 0.1 µF 2.2 Ω 0.1 µF 2.2 Ω SP_ GND 1 Vol. CTL EVR_CTL AN2905FHQ ■ Pin Descriptions Pin No. Description Pin No. Description 1 Speaker output (+) 25 Recorder output 2 GND (for SP) 26 HPF operational amp. input 3 Speaker output (−) 27 Operational amp. output 4 1/2VCC-SP 28 Operational amp. input 5 Speaker amp. input 29 Operational amp. input 6 Mix. amp. output 30 AGC output 7 GND 31 GND 8 Beep mix. amp. input 32 AGC detection pin 9 Beep electronic volume output 33 Wind noise HPF output 10 Beep electronic volume controll 34 Wind noise HPF bias output 11 Beep input 35 Wind noise HPF operational amp. input 12 Playback-system AGC detection pin 36 Wind noise not through HPF input 13 Mix. amp. input 37 Microphone amp. negative feedback pin 14 Electronic volume output 38 Microphone amp. output 15 EVR mute 39 SW against wind noise 16 Electronic volume control 40 Microphone amp. input 17 GND 41 Microphone power supply 18 AGC changeover SW 42 Microphone power supply smoothing pin 19 Playback input 43 1/2VCCH (VREFH) 20 HPF changeover SW 44 VCCH 21 VCC 45 GND 22 Microphone amp. power save SW 46 Line output 23 1/2VCC (VREF) 47 Speaker power save SW 24 Standby changeover 48 VCC-SP (for speaker drive) ■ Absolute Maximum Ratings Parameter Symbol Rating Unit *2 VCC 3.5 V VCCH /VCC-SP 5.2 ICC A PD 361 mW Topr −20 to +70 °C Tstg −55 to +150 °C Supply voltage Supply current Power dissipation *3 Operating ambient temperature Storage temperature *1 *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: When used within the range not exceeding the absolute maximum ratings and the power dissipation. *3: The power dissipation shown is for the independent IC without a heat sink at Ta = 70°C. SDB00078AEB 3 AN2905FHQ ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VCCH 4.50 to 5.00 V VCC 2.70 to 3.30 VCC-SP 2.70 to 5.00 ■ Electrical Characteristics at VCCH = 4.9 V, VCC-SP = 4.3 V, VCC = 3.1 V, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Circuit current Circuit current without signal (1A) (VCC-system) IVCCA Without signal 2.2 3.2 4.2 mA Circuit current without signal (2A) (VCCH-system) IVCCHA Without signal 2.8 3.8 4.8 mA Circuit current without signal (3A) (VCC-SP-system) IVCCSA Without signal 1.0 3.0 6.0 mA Circuit current without signal (1B) (VCC-system) IVCCB I/O power save 0.5 1.5 mA Circuit current without signal (2B) (VCCH-system) IVCCHB I/O power save 1.8 2.8 mA Circuit current without signal (3B) (VCC-SP-system) IVCCSB SP power save 0.7 1.7 mA Circuit current without signal (3C) (VCCH-system) IVCCHC SP power save 3.0 4.0 mA Circuit current without signal (3D) (VCCH-system) IVCCHD SP, I/O power save 1.8 2.8 mA Circuit current without signal (1C) (VCC-system) IVCCC Microphone amp. off 1.8 2.8 mA VMIC Output current = −5 mA 1.8 2.0 2.2 V Power supply for microphone Microphone supply voltage Microphone amp. characteristics: Microphone amp. input → Microphone amp. output Output level Output THD 1 Output noise Output THD 2 VIN = −37 dBS, 1 kHz −9 −8 −7 dBS THROM1 VIN = −37 dBS, 1 kHz, up to 5th harmonic 0.02 0.10 % −89 −84 dBS 0.02 1.0 % VROM NROM Without input, using A-curve filter THROM2 VIN = −33 dBS, 1 kHz, up to 5th harmonic Rec. AGC characteristics: AGC input → Rec. input Rec. reference output level A 4 VROA VIN = −38 dBS, 1 kHz −13.3 −12.3 −11.3 dBS Rec. reference output THD 1A THROA VIN = −38 dBS, 1 kHz, up to 5th harmonic 0.01 0.10 % Rec. output noise voltage A VNROA Without input, using A-curve filter −81 −75 dBS SDB00078AEB AN2905FHQ ■ Electrical Characteristics at VCCH = 4.9 V, VCC-SP = 4.3 V, VCC = 3.1 V, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit Microphone AGC characteristics 1 VAGCML1 VIN = −33 dBS, 1 kHz −9.3 −7.3 −5.3 dBS Microphone AGC characteristics 2 VAGCML2 VIN = −28 dBS, 1 kHz −9.0 −6.0 −3.0 dBS Microphone AGC characteristics 3 VAGCML3 VIN = −22 dBS, 1 kHz −8.8 −5.8 −2.8 dBS 0.10 0.40 % −8.0 −5.0 −2.0 dBV 0.15 1.0 % −30 0 30 mV −8.0 −7.0 −6.0 dBS Rec. AGC characteristics (continued): AGC input → Rec. input Microphone AGC characteristics 3 THAGCM3 VIN = −22 dBS, 1 kHz, THD up to 5th harmonic, load = 22 kΩ Microphone AGC characteristics 4 VAGCM4 VIN = −4 dBS, 1 kHz Microphone AGC characteristics 4 THAGCM4 VIN = −4 dBS, 1 kHz, THD up to 5th harmonic, load = 22 kΩ AGC-DC offset voltage VDROM Without input, difference from VREF voltage PB line output characteristics: PB input → Line output VIN = −12.3 dBS, 1 kHz Line reference output level at playback VLOPS Line reference output THD at playback THLOPS VIN = −12.3 dBS, 1 kHz, up to 5th harmonic 0.02 0.10 % Line reference output noise voltage at playback VNOPS −84 −78 dBS Line maximum output level at playback VLMAPOS f = 1 kHz, load = 22 kΩ, THD = 1% (up to 5th) 2.8 6.3 dBS Line crosstalk Mic. input → Line output VSOPS1 VIN = −61 dBV, f = 1 kHz, using A-curve filter at PB −83 −78 dBS Rec. crosstalk 1 PB input → Rec. output VNOM VIN = −7.3 dBV, f = 1 kHz, using A-curve filter −81 −73 dBS Without input, using A-curve filter Electronic volume characteristics: PB input → EVR output (AGC = off) Electronic volume maximum (+10 dB) gain VEVMA VIN = −12.3 dBS, 1 kHz, vol. = max. (V16 = 3.1 V) Electronic volume typical (0 dB) gain VEVTP VIN = −12.3 dBS, 1 kHz, vol. = center (V16 = 1.55 V) Electronic volume minimum (maximum attenuation) gain VEVMI VIN = −12.3 dBS, 1 kHz, vol. = min. (V16 = 0 V), using A-curve filter −12.0 −11.0 −10.0 dBS −24.0 −21.0 −18.0 dBS −90 −80 dBS −20 −18 −16 dBS Playback AGC characteristics 2 VPBAGC2 VIN = −12.3 dBS, 1 kHz, (reference +10 dB) vol. = max. −12.5 −9.5 −6.5 dBS Playback AGC characteristics 3 VPBAGC3 VIN = 0 dBS, 1 kHz, (reference +22.3 dB) vol. = max. −11.5 −8.5 −5.5 dBS 0.85 1.0 % Playback-system characteristics (at AGC on) Playback AGC characteristics 1 VPBAGC1 VIN = −22.3 dBS, 1 kHz, vol. = max. Playback AGC characteristics 3 THPBAGC3 VIN = 0 dBS, 1 kHz, (reference +22.3 dB) THD vol. = max., 5th harmonic SDB00078AEB 5 AN2905FHQ ■ Electrical Characteristics at VCCH = 4.9 V, VCC-SP = 4.3 V, VCC = 3.1 V, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit VIN = −14.3 dBS, 1 kHz, vol. = max., beep EVR = min., RL = 6 Ω 0.0 1.5 3.0 dBS THSPPS VIN = −14.3 dBS, 1 kHz, vol. = max., beep EVR = min., RL = 6 Ω 0.2 0.9 % SP reference output noise voltage VNSPPS Without input, using A-curve filter, at playback vol. = typ., beep EVR = min., RL = 6 Ω −78 −74 dBS 300 500 mW Speaker output-system characteristics 1 (at AGC off) SP reference output level at playback SP reference output THD at playback VSPPS SP maximum rating output at playback VMSPPS f = 1 kHz, vol. = max., beep EVR = min., RL = 6 Ω, THD = 10% SP output at power save and playback VPSPPS VIN = −14.3 dBS, 1 kHz, vol. = max., using A-curve filter, RL = 6 Ω −110 −90 dBS Beep EVR characteristics 1 (at EVR = max.) VBMA VIN = −15 dBS, 1 kHz, vol. = min., RL = 6 Ω 0.0 1.5 3.0 dBS Beep EVR characteristics 2 (at EVR = min.) VBMI VIN = −15 dBS, 1 kHz, vol. = min., using A-curve filter, RL = 6 Ω −72 −67 dBS VIN = −12.3 dBS, 1 kHz, vol. = max., beep EVR = min., RL = 6 Ω 2.0 5.0 6.5 dBS THSPPS VIN = −12.3 dBS, 1 kHz, vol. = max., beep EVR = min., RL = 6 Ω 0.2 0.9 % SP reference output noise voltage VNSPPS Without input, using A-curve filter, at playback vol. = typ., beep EVR = min., RL = 6 Ω −72 −68 dBS Speaker output-system characteristics 2 (at AGC on) SP reference output level at playback SP reference output THD at playback VSPPS Mode selection hold voltage 6 HPF off hold voltage V39L 0.0 0.5 V HPF on hold voltage V39H 2.5 3.1 V SP output on hold voltage V47L 0.0 0.5 V SP output off hold voltage V47H 2.6 4.3 V Standby on hold time V24L 0.0 0.5 V Standby off hold time V24H 2.6 3.1 V Microphone amp. on hold time V22H 0.0 0.5 V Microphone amp. off hold time V22L 2.6 3.1 V HPF on hold voltage V20L 0.0 0.5 V HPF off hold voltage V20H 2.6 3.1 V AGC on hold voltage V18L 0.0 0.5 V AGC off hold voltage V18H 2.6 3.1 V EVR mute on hold voltage V15L 0.0 0.5 V EVR mute off hold voltage V15H 2.6 3.1 V SDB00078AEB AN2905FHQ ■ Technical Data 1. PD Ta curves of LQFP048-P-0707A PD T a 1 400 Power dissipation PD (mW) 1 211 1 200 Glass epoxy board: 50 mm × 50 mm × t0.8 mm Rth(j-a) = 103.1°C/W 1 000 800 Independent IC without a heat sink Rth( j-a) = 221.4°C/W 600 564.6 400 200 0 0 25 50 75 100 125 150 Ambient temperature Ta (°C) SDB00078AEB 7 AN2905FHQ ■ Technical Data (continued) 2. Main Characteristics Microphone amp. gain External resistor between pin 37 and pin 38 Electronic volume control curve 29 −10 −30 −40 −50 −60 −70 −80 47 kΩ 26 33 kΩ 25 22 kΩ 24 15 kΩ 10 kΩ 2 0 3 1 000 900 800 700 600 500 400 300 VCC = 3.1 V VCCH = 4.9 V ROUT = 6 Ω Temp. = 27°C AGC: off 200 100 0 0 3.0 4.0 20 40 60 80 100 120 External resistor between pin 37 and pin 38 (kΩ) Maximum power consumption Supply voltage VCC-SP Maximum power consumption (mW) 68 kΩ 27 22 1 0 Electronic volume control voltage (V) 5.0 Supply voltage VCC-SP (V) 8 82 kΩ 23 −90 −100 100 kΩ 28 −20 Microphone amp. gain (dB) Electronic volume output level (dBS) 0 SDB00078AEB 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