SC7072B

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深圳市富满电子有限公司 SHENZHEN FUMAN ELECTRONICS CO., LTD. SC7072B(文件编号：S&CIC0411) 变音 IC 第 1 页 共 4 页 Feature  Wide operating voltage range 3.0V to 5.0V  Low power consumption  Several voice effects selectable: * Transposing voice (higher or lower) * Amplifying voice * Robot voice  Variable resistor or switch can be used to adjust the transposed-voice effect  External memory is not required  Build-in reduction noise circuit and silence function  For application in toys, masks, telephone systems and other voice fields General Description The SC7072Bis a single-chip CMOS LSI designed for voice changer, which can transpose or distort one voice into another voice by encoding the input audio signals in normal speed and transmit the output audio signals with unusual speed. That is accomplished by sampling the input audio signals into digital signals and re- arranging the digital signals to generate different voice from the user’s normal voice. The SC7072B includes microphone amplifier to amplify voice signal and noise reduction circuit for reducing environment noise. Pin Assignment 1 2 3 4 A B C D E F 4321 F E D C B A Title Number RevisionSize B Date: 26-Aug-2002 Sheet of File: E:\\工程图纸\\SC8872.Ddb Drawn By : 8 9 16WOSC1 WOSC0 SEL NRL ROB ROSC1 RDOUT VSS AVSS IN AVDD VDD DAT ROSC0 Block Diagram

深圳市富满电子有限公司 SHENZHEN FUMAN ELECTRONICS CO., LTD. SC7072B(文件编号：S&CIC0411) 变音 IC 第 2 页 共 4 页

Electrical Characteristics

Parameter Symbol Min. Typ. Max. Operating Voltage VDD 3.0V 4.5V 5.0V Operating Current IDD -- -- 10mA Input Voltage of Signal VINp-p 0.5V 1.5V 2.0V Output Voltage of Signal VOUTp-p -- 1.6V -- Pin Description No. Designation Description

1 WOSCI Write (sampling) oscillator input pin

2 WOSCO Write (sampling) oscillator output pin

3,4 S1,S2 Tone frequency of voice output select pins S1 0 0 1 1 S2 0 1 0 1 Tone freq. 800Hz 1333Hz 660Hz 2KHz *Input Frequency: 1KHz

5 SEL The voice effect are adjusted by variable resistor if the pin connect to GND

6 NRL Amplifying voice effect is selected if this pin is connected to GND

Transposing voice effect is selected if this pin is floating

7 ROB Robot voice effect is selected if this pin is connected to GND

8 ROSCI Read (re-arranging) oscillator input pin

9 ROSCO Read (re-arranging) oscillator output pin

10 DAT For testing only

11 VDD Positive power supply

12 AVDD Analog positive power supply

13 IN Audio signal input pin

14 AVSS Analog negative power supply

15 VSS Negative power supply

16 RDOUT Audio signal output pin

A B C D E F 4321 F E D C B A Title Number RevisionSize B Date: 30-Mar-2005 Sheet of File: E:\\规格图\\SC8872.Ddb Drawn By : AVSS IN AVDD VDD DAT Rosc0 Rosc1 ROB NCNRLSELS2S1Wosc0 Wosc1 Rdout VSS IC基底接VSS

深圳市富满电子有限公司 SHENZHEN FUMAN ELECTRONICS CO., LTD. SC7072B(文件编号：S&CIC0411) 变音 IC 第 3 页 共 4 页 No. Pad Name X Y No. Pad Name X Y 1 AVSS -453.30 453.20 10 NC 452.65 -453.30 2 VSS -453.30 310.00 11 ROB 452.80 -270.30 3 RDOUT -453.30 147.15 12 ROSC1 452.80 -89.70 4 WOSC1 -453.30 -200.35 13 ROSC0 452.80 156.95 5 WOSC0 -453.30 -453.30 14 DAT 452.80 338.20 6 S1 -274.35 -453.30 15 VDD 346.80 453.20 7 S2 -93.55 -453.30 16 AVDD 231.80 453.20 8 SEL 87.05 -453.30 17 IN -298.50 453.20 9 NRL 272.05 -453.30 Application Circuit  Variable resistor adjusting with transistor amplifier 1 2 3 4 A B C D E F 4321 F E D C B A Title Number RevisionSize B Date: 26-Jul-2005 Sheet of File: E:\\规格书\\规格图\\规格图-0\\SC8872.Ddb Drawn By : 1 2 3 4 5 6 7 8 910111213141516 IC:SC7072B S2 S3 S4 S5 S6 20P 82P 10K 3.3K 15K IN4148X2 100U4.5V1044.7K咪头 470R100U SP 100U 8550D 470R 8050D  Variable resistor adjusting with SC386 amplifier

深圳市富满电子有限公司 SHENZHEN FUMAN ELECTRONICS CO., LTD. SC7072B(文件编号：S&CIC0411) 变音 IC 第 4 页 共 4 页 1 2 3 4 A B C D E F 4321 F E D C B A Title Number RevisionSize B Date: 26-Jul-2005 Sheet of File: E:\\规格书\\规格图\\规格图-0\\SC8872.Ddb Drawn By : 1 2 3 4 5 6 7 8 910111213141516 IC:SC7072B S2 S3 S4 S5 S6 20P 82P 10K 3.3K 15K 100U4.5V1044.7K 咪头 470R 100U 1 2 3 4 678 5 SC386 0.033U Rg 0.1U Cg 100U 0.1U 10RSP