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E2A0045-16-X1
Semiconductor
Semiconductor MSM7577
Voice Signal Level Control LSI
This version: Jan. 1998 MSM7577 Previous version: Nov. 1996
GENERAL DESCRIPTION
The MSM7577 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 +2.7 V to +5.25 V power supply * Power down function * Package: 16-pin plastic SOP (SOP16-P-300-1.27-K) (Product name : MSM7577MS-K)
APPLICATION
Cellular handset, cordless telephone, etc.
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Semiconductor
MSM7577
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
- +
35 kW 35 kW SG SG
- +
200 kW SG
TAUD VDD GND PD
PIN CONFIGURATION (TOP VIEW)
TAUD 1 AN2 2 PD 3 RCV2 4 RCV1 5 NC 6 RAUD 7 GND 8 16-Pin Plastic SOP
16 VDD 15 AO3 14 MIC 13 AN3 12 ATTE 11 ATT2 10 ATT1 9 ATT0
NC : No connect pin 2/8
Semiconductor
MSM7577
PIN DESCRIPTION
Pin No. 1 2 Name TAUD AN2 I/O O I Receive voice input. Gain control should be connected by a resistor between AN2 pin RCV2 pin. Power down control. 3 PD 1 H : Power down L : Power on Output pin of receiving voice. 4 RCV2 O Gain control should be connected by a resistor between AN2 and RCV2 pin. RCV2 signal is opposite phase to RCV1 signal. 5 6 7 8 RCV1 NC RAUD GND O -- I -- Receive voice input. 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 13 14 15 16 AN3 MIC AO3 VDD I I O -- Gain control and frequency responce control. Gain control should be controlled by a resistor between AN3 and AO3. Input pin of Microphone signal. Gain control and frequency responce control. Gain control should be controlled by a resistor between AN3 and AO3. Power supply (+3 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.
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Semiconductor
MSM7577
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 +2.7 600 10 Typ. 25 +3.00 -- -- Max. 70 +5.25 -- -- Unit C V W kW
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Semiconductor
MSM7577
ELECTRICAL CHARACTERISTICS
DC Characteristics
Parameter Power Supply Current Power Down Current Low Level Input Voltage High Level Input Voltage Digital Input Leakage Current Analog Input Voltage Level Analog Input Resistance Analog Output Level Range 1 Analog Output Level Range 2 Symbol IDD -- VIL VIH IIL IIH VIA RIA V01 V02 Condition VDD = 3.0 V *VDD = 5.0 V PD = VDD ATT0 to ATT2 ATTE, PD ATT0 to ATT2 ATTE, PD 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) ( Ta = -20C to 70C, VDD = 2.7 V to 5.25 V ) Min. -- -- -- 0 0.7 VDD -10 -- -- 1.2 1.2 Typ. 1.2 10.0 0.1 -- -- -- -- 200 -- -- Max. 2.4 20 0.2 0.3 VDD VDD +10 1.2 -- -- -- Unit mA mA V V mA VP-P kW VP-P VP-P
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Semiconductor Analog Interface Characteristics
MSM7577
( Ta = -20C to 70C, VDD = 2.7 V to 5.25 V ) 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 TX-AUDIO Distortion MIC-TAUD LTXA MIC = -20 dBV ATTE = LAEH MIC-TAUD VTXA AO3 and AN3 are connected 600 W load resistance VRTA VATG MIC-RCV1 AO3 and AN3 are connected RAUD-RCV1 ATT0 to ATT2 MIC = -7.45 dBV -- fi = 1 kHz 600 W load resistance -- -- 8 % -9.5 -0.3 -8.5 0 -7.5 +0.3 dB dB -1.0 0 +1.0 dB 40 -- -- dB 40 -- -- dB +14 +15 +16 dB Min. Typ. Max. Unit
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Semiconductor
MSM7577
APPLICATION CIRCUIT
MSM7577MS-K +3 V C2
Transmit voice data
1 TAUD 2 AN2 R2
R1
V DD 16
C4
AO3 15 MIC 14 AN3 13 ATTE 12 ATT2 11 ATT1 10 ATT0 9
R1 > 30 kW R2 > 30 kW C1 = 0.1 F C2 = 1 F C3 = 50 pF C4 = 10 pF Gain = R2/R1
C3
3 PD 4 RCV2 5 RCV1
C1
C1
Receive voice data
6 NC 7 RAUD 8 GND
In the Reverse Type
C6 R4 AO3 AN3 MIC - + R3 > 10 kW R4 > 10 kW C5 > 1 F C6 = 50 pF Gain = R4/R3
C5 Analog input
R3
In the Same Phase Type
Analog input C7 MIC AN3 R5 R6 C8 C9 AO3 - + R5 > 10 kW R6 > 10 kW C7 > 0.1 F C8 > 1 F C9 = 10 pF Gain = 1 + (R5/R6)
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Semiconductor
MSM7577
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).
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