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| E2A0025-16-X0 Semiconductor Semiconductor MSM7547 Voice Signal Level Control LSI This version: Jan. 1998 MSM7547 Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7547 is an LSI for Audio Signal Level adjustment for telephone set, etc. Conventionally, its circuit has been made within individual unit, such as amplifiers, resistors and switches. However, using this LSI allows for simple mounting and economically small space. FEATURES Receiving system * Built-in electrical volume Digital control (3 bit / 8 step) * For transmission voice, with side tone route available. * Mute function available. Transmitting system * Built-in operational amplifier for transmission signal level adjustment. * Mute function available. * Single +5 V power supply * Package: 16-pin plastic SOP (SOP16-P-300-1.27-K) (Product name : MSM7547MS-K) APPLICATION Cellular handset, cordless telephone and etc. 1/7 Semiconductor MSM7547 BLOCK DIAGRAM 56 kW ATT RAUD - + i o 10 kW - + RCV1 AN2 - + 200 kW ATT0 ATT1 ATT2 ATTE SG ATT0 ATT1 ATT2 ATTE SG RCV2 150 kW SG AO3 AN3 MIC - + - A CO B SG + TAUD VDD GND 200 kW SG PIN CONFIGURATION (TOP VIEW) TAUD 1 AN2 2 NC 3 RCV2 4 RCV1 5 NC 6 RAUD 7 GND 8 16 VDD 15 AO3 14 MIC 13 AN3 12 ATTE 11 ATT2 10 ATT1 9 ATT0 16-Pin Plastic SOP NC : No connect pin 2/7 Semiconductor MSM7547 PIN DESCRIPTION Pin No. 1 2 3 4 Name TAUD AN2 NC RCV2 I/O O I -- O Input pin of RCV1 signal. Gain control should be connected by a resistor between AN2 pin RCV2 pin. No Connection. Output pin of receiving voice. Gain control should be connected by a resistor between AN2 and RCV2 pin. RCV2 signal is opposite to phase to RCV1 signal. 5 6 7 8 RCV1 NC RAUD GND O -- I -- Output pin of receiving voice. RCV1 signal is opposite phase to RCV2 signal. No Connection. Receive voice input. Ground (0 V). Volume control. ATT2 0 0 9 10 11 ATT0 ATT1 ATT2 I 0 0 1 1 1 1 Mute signal input. 12 ATTE I H : Mute mode L : Operating mode Gain control and frequency responce control. 13 14 15 16 AN3 MIC AO3 VDD I I O -- Gain control should be controlled by a resistor between AN3 and AO3. Please refer to follow Fig. 1. Microphone signal input. Gain control and frequency responce control. Gain control should be controlled by a resistor between AN3 and AO3. Power supply (+5 V). ATT1 0 0 1 1 0 0 1 1 ATT0 0 1 0 1 0 1 0 1 Loss level (dB) 0 0.3 -2 0.3 -4 0.3 -7 0.3 -10 0.3 -13 0.3 -16 0.3 -19 0.3 Description Output pin of transmitting voice. 3/7 Semiconductor MSM7547 ABSOLUTE MAXIMUM RATINGS Parameter Power Supply Voltage Digital Input Voltage Analog Input Voltage Storage Temperature Symbol VDD VIND VINA TSTG Min. -0.3 -0.3 -0.3 -55 Max. +7.0 VDD + 0.3 VDD + 0.3 +150 Unit V V V C RECOMMENDED OPERATING CONDITIONS Parameter Operating Temperature Power Supply Voltage Analog Output Load Resistance 1 Analog Output Load Resistance 2 Symbol Ta VDD RLA1 RLA2 Condition -- VDD TAUD Except TAUD pin. Min. -20 +4.75 600 5 Typ. 25 +5.0 -- -- Max. 70 +5.25 -- -- Unit C V W kW 4/7 Semiconductor MSM7547 ELECTRICAL CHARACTERISTICS DC Characteristics ( fi = 1 kHz, Ta = -20C to 70C, VDD = 5 V 5% ) Parameter Power Supply Current Low Level Input Voltage High Level Input Voltage Digital Input Leakage Current Analog Input Voltage Level Analog Input Resistance Analog Output Level Range1 Analog Output Level Range2 Symbol IDD VIL VIH IIL IIH VIA RIA V01 V02 Condition -- ATT0 to ATT2 ATTE ATT0 to ATT2 ATTE VI = GND VI = VDD RAUD, MIC AN2, AN3 RAUD MIC RCV1, RCV2, AO3 RL = 5 kW (to SG level) TAUD RL = 600 W (to SG level) Min. -- 0 3.5 -10 -- -- 2.0 2.0 Typ. 3.0 -- -- -- -- 200 -- -- Max. 6.0 1.5 VDD +10 2.0 -- -- -- Unit mA V V mA VP-P kW VP-P VP-P Analog Interface Characteristics Parameter RX-AUDIO Path Gain Symbol VRXA Condition RAUD-RCV1 ATT = 0 dB ATTE = L RAUD-RCV1 RX-AUDIO Loss Level (Mute) LRXA RAUD = -20 dBV ATTE = 0 dB ATTE = LAEH TX-AUDIO Loss Level TX-AUDIO Path Gain MIC Path Gain ATT Establish Error MIC-TAUD LTXA MIC = -20 dBV ATTE = LAEH MIC-TAUD LTXA ( fi = 1 kHz, Ta = -20C to 70C, VDD = 5 V 5% ) Min. +14 Typ. +15 Max. +16 Unit dB 40 -- -- dB 40 -- -- dB AO3 and AN3 are connected. 600 W load resistance MIC-RCV1 AO3 and AN3 are connected. RAUD-RCV1 ATT0 to ATT2 -1.0 0 +1.0 dB VRTA VATG -9.5 -0.3 -8.5 0 -7.5 +0.3 dB dB 5/7 Semiconductor MSM7547 APPLICATION CIRCUIT MSM7547MS-K +5 V C2 Transmit voice data 1 2 TAUD AN2 NC RCV2 RCV1 NC RAUD GND VDD 16 AO3 15 MIC 14 R1 R2 C1 3 4 5 6 C3 AN3 13 ATTE 12 ATT2 11 ATT1 10 ATT0 9 Receive voice data C3 7 8 R1 > 5 kW R2 > 5 kW C1 = 50 pF C2 > 1 F C3 > 0.1 F In the Reverse Type C5 R4 AO3 AN3 MIC Analog input C4 R3 _ + R4 > 5 kW R3 > 5 kW C4 > 1 F C5 = 50 pF Gain = R4/R3 In the Same Phase Type Analog input C6 MIC AN3 C8 AO3 R6 C7 R5 + _ R5 > 5 kW R6 > 5 kW C6 > 0.1 F C7 > 1 F C8 = 50 pF Gain = 1 + (R5/R6) 6/7 Semiconductor MSM7547 PACKAGE DIMENSIONS (Unit : mm) SOP16-P-300-1.27-K Mirror finish Package material Lead frame material Pin treatment Solder plate thickness Package weight (g) Epoxy resin Cu alloy Solder plating 5 mm or more 0.21 TYP. Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki's responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). 7/7 |
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