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AN6425K

Panasonic Semiconductor
Part Number AN6425K
Manufacturer Panasonic Semiconductor
Description Speech Network Circuit
Published Mar 26, 2005
Detailed Description AN6425K Speech Network Circuit s Overview The AN6425K is a high-function speech network IC with speaker amplifier. It in...
Datasheet PDF File AN6425K PDF File

AN6425K
AN6425K

Overview
AN6425K Speech Network Circuit s Overview The AN6425K is a high-function speech network IC with speaker amplifier.
It incorporates a transmitter-system non-linear circuit, receiver digital VRs, etc.
and is suitable for realizing the multifunctional telephone sets.
26.
7±0.
3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 8.
4±0.
3 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Unit : mm 0.
5±0.
1 0.
9±0.
25 1.
05±0.
25 4.
8±0.
25 3.
05±0.
25 0.
3 + 0.
1 5 – 0.
0 s Features • Speech network IC for the multifunctional telephone sets • Capable of interfacing with the light-weight small receivers and ECM transmitters • Built-in 2V REG constant voltage source (2V typ) for ECM • Built-in non-linear circuits in the transmitter and receiver systems in order to eliminate ambient noises • Built-in speaker amplifier and capable of driving with a main wire current • Built-in hold-tone amplifier, key-in-tone amplifier, and DTMF transmitter, and capable of setting the mode with the control pins • Automatic gain control (automatic pad function) according to a circuit curret • Built-in tertiary active filter circuit and capable of sending a DTMF circuit with much higher harmonic at a low distortion factor • Built-in single touch receiver volume-up function (about 6dB) 3 to 15˚ 10.
16±0.
25 28-pin Shrunk DIL Plastic Package (SDIP028-P-0400B) s Block Diagram VL 28 27 26 25 24 23 CLASS B BTL SP Amp.
CLASS A Push pull 1V 2V REG 2V HT TT in + REC DRIVER REC DRIVER 22 21 20 80kΩ – 19 18 17 16 15 + – D5dB D3dB D6dB REC in DVR + – 30kΩ 2kΩ 30kΩ 2kΩ 40kΩ KT 4kΩ 1V REFF 1V VL Battery Selector 65kΩ 1 2 3 4 5 6 SEND Amp D12 dB Filter Amp.
D3dB MUTE MIC in Logic INV NAND 7 8 9 10 11 12 13 14 GND 1.
778 s Absolute Maximum Ratings (Ta=25˚C) Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Storage temperature * VCC × ICC <1200mW Symbol VL IL PD Topr Tstg Rating 14.
4 * 120 * 1200 * –20 to + 65 –55 to +150 Unit V mA mW ˚C ˚C s Recommended Operating Range (T...


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