msm7508b Oki Semiconductor, msm7508b Datasheet
msm7508b
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msm7508b Summary of contents
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... MSM7508B/7509B Single Rail CODEC GENERAL DESCRIPTION The MSM7508B and MSM7509B are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz. These devices contain filters for A/D and D/A conversion. Designed especially for a single-power supply and low-power applications, these devices are optimized for telephone terminals in ISDN and digital wireless systems. ...
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... BLOCK DIAGRAM + AIN+ RC – Active AIN– GSX SGC Signal Ground SG Voltage Ref. + AOUT – AD Transmit BPF Conv. Controller (8th) Auto TPLL Zero RPLL DA Receive LPF Conv. Controller (5th) PWD PWD Logic MSM7508B/7509B PCMOUT XSYNC BCLOCK RSYNC PCMIN PDN 2/17 ...
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... AG AOUT 5 11 BCLOCK XSYNC PCMOUT PDN 10 RSYNC 11 PCMIN connect pin 24-Pin Plastic SOP MSM7508B/7509B 24 AIN+ 23 AIN– GSX BCLOCK XSYNC 13 PCMOUT 3/17 ...
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... AIN– R2 – AIN AIN+ + AIN– – GSX above and below the signal ground voltage PP MSM7508B/7509B R1 : variable R2 > > 1/(2 ¥ 3.14 ¥ 30 ¥ R1) Gain = R2/R1 £ > > > > ¥ 3.14 ¥ 30 ¥ R5) Gain = £ 10 4/17 ...
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... However, if the frequency characteristic of an applied system is not specified exactly, this device can operate in the range kHz, but the electrical characteristics in this specification are not guaranteed. Setting this signal to logic "1" or "0" drives both transmit and receive circuits to the power saving state. MSM7508B/7509B 5/17 ...
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... This output voltage level is undefined during power saving or power down modes. SGC Used to generate the signal ground voltage level by connecting a bypass capacitor. Connect a 0.1 mF capacitor with excellent high frequency characteristics between the AG pin and the SGC pin. PCMIN/PCMOUT MSM7508B (m-law) MSD ...
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... R AL GSX C AOUT, GSX AL R Pull-up resistor DL C — DL Transmit gain stage, Gain = 1 V off Transmit gain stage, Gain = 10 — XSYNC, RSYNC, BCLOCK MSM7508B/7509B Rating Unit –0 0 –0 0 –55 to +150 °C Min. Typ. Max. Unit 4 ...
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... IH V — — — IL Pull-up resistance > 500 — AOUT with respect to SG OFF C — AIN+, AIN– IN MSM7508B/7509B ( ±5 –10°C to +70°C) DD Min. Typ. Max. Unit — 3.5 7.0 mA — 0.3 0.5 mA — 0.8 1.2 mA 2.2 — 0.0 — ...
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... AC Characteristics Parameter Transmit Frequency Response Receive Frequency Response Transmit Signal to Distortion Ratio Receive Signal to Distortion Ratio Transmit Gain Tracking Receive Gain Tracking *1 Psophometric filter is used *2 Upper is specified for the MSM7508B, lower for the MSM7509B Freq. Level Symbol Condition (Hz) (dBm0) Loss T1 60 ...
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... Absolute Level (Initial Difference) Absolute Delay Transmit Group Delay Receive Group Delay Crosstalk Attenuation *1 Psophometric filter is used *2 Upper is specified for the MSM7508B, lower for the MSM7509B *3 MSM7508B: All "0" code to PCMIN, MSM7509B: "11010101" to PCMIN *4 Minimum value of the group delay distortion Freq. Level Symbol ...
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... PSR T 0 kHz PSR R 50 kHz XD1 C = 100 LSTTL L t XD2 t XD3 MSM7508B/7509B ( ±5 –10°C to +70°C) DD Min. Typ. Max. Unit 30 32 — dB — –37.5 –35 dBmO — –52 –35 dBmO — ...
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... Fc, the Delay of the MSD bit is defined Receive Timing BCLOCK RSYNC t WS PCMIN MSD XD2 XD1 MSM7508B/7509B XD3 12/17 ...
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... GSX AOUT PCMIN AIN+ BCLOCK SG 0.1 mF XSYNC SGC RSYNC AG PDN MSM7508B/7509B +5 V Digital interface PCM signal output PCM data input PCM shift clock input 8 kHz SYNC signal input Power Down control input "1" = Operation "0" = Power down 13/17 ...
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... Use a low noise (particularly, low level type of high frequency spike noise or pulse noise) power supply to avoid erroneous operation and the degradation of the characteristics of these devices. pin not lower than –0.3 V even instantaneously to avoid latch- MSM7508B/7509B 14/17 ...
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... Semiconductor PACKAGE DIMENSIONS DIP16-P-300-2.54-W1 MSM7508B/7509B (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating Solder plate thickness more Package weight (g) 1.00 TYP. 15/17 ...
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... 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). MSM7508B/7509B (Unit : mm) Package material Epoxy resin ...
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... 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). MSM7508B/7509B (Unit : mm) Package material Epoxy resin ...