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AN12979A Datasheet

Download or read online Panasonic Corporation AN12979A 2 Stereo BTL Amplifier IC With Built-in AGC pdf datasheet.



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DATA SHEET
AN12979A
Part No.
Package Code No.
ULGA020-L-0404
Publication date: February 2008
SDE00031AEB
1

Summary of Contents

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... DATA SHEET Part No. Package Code No. Publication date: February 2008 AN12979A ULGA020-L-0404 SDE00031AEB 1 ...

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... AN12979A Overview ... 3 Features … ...

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... AN12979A Overview AN12979A is the stereo BTL amplifier which contained the AGC circuit for clip prevention of a speaker output. This IC performs a mode change by the I Features Selection bus control is possible in the on-level of AGC. (3-bit, 8-step) Selection bus control is possible in an attack/recovery time of AGC. (attack: 2-bit, recovery: 3-bit) The resistance and the capacitor of a detector circuit which were being used for the conventional AGC are unnecessary ...

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... AN12979A Application Circuit Example (Block Diagram) PREOUT-R 16 100 pF 10 kΩ 0.1 μF 17 FB-R IN(R) 10 kΩ GND 18 0.1 μF 10 kΩ FB-L 19 IN(L) 10 kΩ 100 pF 20 PREOUT-L SD Operate VCC_D Shut-down 1 pin Operate voltage VCC_D 1.8 V VCC_D 2.6 V Operate Operate > 2.34 V > 1.62 V Shut-down Shut-down < 0.18 V < 0.26 V Note) 1. This circuit and these circuit constants show an example and do not guarantee the design as a mass-production set. ...

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... AN12979A Pin Descriptions Pin No. Pin name 1 S.D 2 SCL 3 SDA Input / Output 4 VCC_D Power Supply 5 LOUT_POS 6 GND_SPL 7 LOUT_NEG 8 VCC_SP Power Supply 9 ROUT_NEG 10 GND_SPR 11 ROUT_POS 12 VREF_SP 13 TEST1 14 VCC Power Supply 15 VREF 16 PREOUT_R 17 FB_R 18 GND 19 FB_L 20 PREOUT_L Type Terminal for shut-down (VCC: operate, GND: shut-down) ...

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... AN12979A Absolute Maximum Ratings A No. Parameter 1 Supply voltage 2 Supply current 3 Power dissipation 4 Operating ambient temperature 5 Storage temperature Note) 1: The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. 2: The power dissipation shown is the value at T When using this IC, refer to the P ...

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... AN12979A Electrical Characteristics at VCC 3 VCC_D 1 VCC_SP 3 25°C±2°C unless otherwise specified. Note Parameter No. Circuit Current Circuit current 1A at non-signal 1 (VCC) Circuit current 2A at non-signal 2 (VCC_SP) Circuit current 3A at non-signal 3 (VCC_D) Circuit current 1B at non-signal 4 (VCC) Circuit current 2B at non-signal ...

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... AN12979A Electrical Characteristics at VCC 3 VCC_D 1 VCC_SP 3.0 V (continued) Note 25°C±2°C unless otherwise specified Parameter No interface 43 SCL,SDA signal input Low Level 44 SCL,SDA signal input Low Level 45 SDA output signal Low Level 46 SCL,SDA Signal Input Current SCL maximum frequency of signal ...

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... AN12979A Electrical Characteristics (Reference values for design) at VCC 3 VCC_D 1.8 V, VCC_SP 3 25°C±2°C unless otherwise specified. a The characteristics listed below are reference values derived from the design of the IC and are not guaranteed by inspection problem does occur related to these characteristics, we will respond in good faith to user concerns. ...

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... AN12979A Technical Data I 2 C-bus Mode 1. Write Mode SDA SCL SLAVE ADDRESS START CONDITION Two transmission messages (i.e., the SCL and SDA) are sent in synchronous serial transmission. The SCL is a clock with fixed frequency. The SDA indicates address data for the control of the reception side, and is sent in parallel in synchronization with the SCL ...

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... AN12979A Technical Data (continued C-bus Mode (continued) 1. Write Mode (continued) ( C-bus PROTOCOL Slave address: 10110110 (B6Hex) Format (normal) S Slave address Start condition (b) Auto increment Sub-address 0Hex: Auto increment mode (When the data is sent in sequence, the sub address will change one by one and the data will be input.) ...

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... AN12979A Technical Data (continued C-bus Mode (continued) 1. Write Mode (continued) (e) AGC-attack-time selection Write Attack 01Hex Register time 0 (g) AGC-on-level selection (at VCC 3.0 V, VCC_SP 3.0 V) Write 01Hex Register ...

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... AN12979A Technical Data (continued C-bus Mode (continued) 2. Read Mode (a)I 2 C-bus PROTOCOL Slave address 10110111(B7Hex) Format S Slave address Note) At the slave address input sequentially output from data 0. There is no necessity for inputting the sub-address. (b) Sub-address Byte and Data Byte Format ...

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... AN12979A Technical Data (continued) I/O block circuit diagrams and pin function descriptions Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. Pin Waveform No. and voltage Shut-down 1 VCC_D to VCCを印加 1 3.0 V SCL 2 Hi-Z SDA 3 Hi-Z VCC_D 4 1.8 V(typ.) ...

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... AN12979A Technical Data (continued) I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. Pin Waveform No. and voltage LOUT_POS GND_SPL LOUT_NEG 7 DC 1.45 V VCC_SP 8 3.0 V(typ.) Internal circuit ...

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... AN12979A Technical Data (continued) I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. Pin Waveform No. and voltage ROUT_NEG GND_SPR ROUT_POS 11 DC 1.45 V VREF_SP 12 DC 1.45 V Internal circuit ...

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... AN12979A Technical Data (continued) I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. Pin Waveform No. and voltage TEST1 13 Hi-Z VCC 14 3.0 V(typ.) VREF 15 DC 1.45 V PREOUT_R 16 DC 1.45 V Internal circuit 13 ...

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... AN12979A Technical Data (continued) I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. Pin Waveform No. and voltage FB_R GND FB_L 19 DC 1.45 V PREOUT_L 20 DC 1.45 V Internal circuit ...

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... AN12979A Technical Data (continued) Power supply and logic sequence Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. The timing control of power-ON/OFF and each logic according to the procedure below should be recommended for the best pop performance caused in switching ...

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... AN12979A Technical Data (continued) ⎯ diagram D a SDE00031AEB 20 ...

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... AN12979A Usage Notes output pin (Pin5, Pin7, Pin9, Pin11 ) power supply pin short, SP output pin(Pin5, Pin7, Pin9, Pin11 ) GND short output (Pin5, Pin7, Pin9, Pin11) -to-SP output-pin short (load short). It damaged when the electricity is turned on. SDE00031AEB 21 ...

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Request for your special attention and precautions in using the technical information and (1) If any of the products or technical information described in this book exported or provided to non-residents, the laws and regulations of the ...

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