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AN6426NK

Part Number	AN6426NK
Manufacturer	Panasonic Semiconductor
Description	Hands-free Speech Network IC
Published	Mar 26, 2005
Detailed Description	ICs for Telephone AN6426NK Hands-free Speech Network IC s Overview The AN6426NK incorporates both speech network and ha...
Datasheet	AN6426NK PDF File

Overview

ICs for Telephone AN6426NK Hands-free Speech Network IC s Overview The AN6426NK incorporates both speech network and hands-free functions.
Its well designed block configuration allows realization of a hands-free telephone with a minimal number of components.
36.
8±0.
3 1 42 0.
5±0.
1 0.
9±0.
25 21 13.
7±0.
3 4.
76±0.
25 3 to 15° 15.
3±0.
25 0.
3 – 0.
05 +0.
1 Unit : mm s Features • Incorporates all the functions required of a hands-free telephone.
• Incorporates all the functions required of a handset.
• Complies with AC and DC impedance requirements.
• Provides a wide dynamic range.
• A noise detecting circuit prevents inadvertent transmission.
• Operation on an external power supply is available.
• Each mode can be easily controlled.
• A built-in loudspeaker amplifier can operated either on line voltage or an external power supply.
22 0.
96±0.
25 4.
5±0.
25 SDIP package with 42 pins (SDIP042-P-0600A) s Block Diagram VL 38 37 – MA2 Vrl + 40 Vrl + 12 13 18 16 – + + – + – MA1 – VCC1 42 36 34 VCC2 29 6 5 35 GND 1 39 19 14 AP Buffer 15 Send 41 Power Regulator Power Regulator Power Regulator Matrix Circuit 33 32 VB TATT VB T Log Matrix Circuit 31 30 Vr1 20 21 22 23 AGC VCC1 17 24 28 VB 27 Vrl Rec Pre 11 AP Buffer – S.
Amp + R Log Comp Attenator Control Vr1 – Rec.
1 + – Rec.
2 + Vr2 VB RATT Vr1 2 3 26 4 25 10 9 7 8 1 AN6426NK s Pin Descriptions Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Symbol GND AGC SAO SAI Vr2 VPO RO1 RO2 RBO RPO RPI MAI1 MAO1 TL1 TLO ND1 ND2 TAI TAO ATC TAC Ground Loudspeaker amp.
time constant Loudspeaker amp.
output Loudspeaker amp.
input Reference voltage (2) Loudspeaker amp.
power supply Receiver output (1) Receiver output (2) Receiver buffer output Receiver preamp.
output Receiver preamp.
input MIC amp.
input (1) MIC amp.
output (1) Transmitter LOG amp.
input Transmitter LOG amp.
output Noise detection time constant (1) Noise detection time constant (2) Transmitter att.
input Transmitter att.
output Att.
timing ...

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AN6426NK Hands-free Speech Network IC - Panasonic Semiconductor

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