MSM6948-3 Oki Semiconductor, MSM6948-3 Datasheet
MSM6948-3
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MSM6948-3 Summary of contents
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... Single Chip MSK Modem (Low Power) GENERAL DESCRIPTION The MSM6948 single chip MSK (Minimum Shift Keying) modem which is fabricated by Oki’s low power consumption CMOS silicon gate technology. The demodulator receives the data to be transmitted (SD) synchronized with the transmit timing clock (ST) generated by the on-chip clock generator ...
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... Semiconductor BLOCK DIAGRAM ST Modulator Timing Re-generator MCK Transmit LPF LPF RC Receive LIM LPF BPF PDF *1 Power ON Reset Clock Generator *1 Post Detection Filter *2 NC (MSM6948-3V) MSM6948-3/6948- LPF LPF Delay Detector V DD Signal Ground 2/13 ...
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... Semiconductor PIN CONFIGURATION (TOP VIEW *MCK 18-Pin Plastic DIP *NC (MSM6948-3V connect pin *MCK (NC (NC (NC ...
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... Name Crystal connection pins 3.6864 MHz crystal shall be connected. When an external clock is applied for MSM6948-3's oscillation source, it has to be input to X2 X2. In this case, X2 has to be AC-coupled by the capacitor of 200 pF. X1 shall be left open. 3.6864 MHz ±0.02% clock output. *MCK This can be used for other devices under limited load conditions. When digital " ...
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... RD output. Description Transmit LPF The output of Power On Transmit LPF The Output of Receive BPF (Used for Device Test Only) Power Down No-signal Output (DC-biased to SG) Power down Transmit LPF SG Modu- lator Receive BPF MSM6948-3/6948-3V State of AO MSK Signal Voice Signal + AO – AI 5/13 ...
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... V power supply. This device is sensitive to supply noise as switched capacitor techniques are utilized bypass capacitor of more than 2.2 mF between V the performance. Description RT RD Delay time (RT Æ RD) < 300 ns Equipment CT "1" "0" DD MSM6948-3/6948-3V and AG indispensable to ensure 6/13 ...
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... R ≥ 100 kW — LX — — 25 ±5°C –100 At –40°C to +85°C –100 — — — — MSM6948-3/6948-3V Rating Unit –0.3 to 7.0 –0 0 –0 0.3 DD – °C –55 to 150 Typ. Max. Unit 3.6 5 — ...
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... IL Input Voltage * OL1 Output Voltage *2 V OH1 V OL2 Output Voltage *3 V OH2 *1 ME, SD, CF, CT ST, RD MCK (NC : MSM6948-3V) Analog Interface Characteristics Transmit signal output (AO) Parameter Symbol f M Carrier Frequency f S Carrier Level V OX Output Resistance R OX Output Load Resistance ...
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... Without DC Load 2 Condition Min. f £ 4 kHz 50 TI — –33 — S — Condition Min. CT= "0" — "1" *1 CT= "1" — MSM6948-3/6948-3V Typ. Max. Unit — –3.5 dBm — — kW Typ. Max. Unit – 0 Typ ...
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... Semiconductor BUILT-IN FILTER FREQUENCY CHARACTERISTICS GAIN (dB –10 –20 –30 –40 –50 –60 Transmit Low-Pass Filter –70 GAIN (dB) 0.5 0 –10 –20 –30 –40 –50 –60 Receive Band-Pass Filter – 1.5 2 2.5 MSM6948-3/6948-3V FREQ (kHz FREQ (kHz) 3 3.5 4 10/13 ...
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... Semiconductor APPLICATION CIRCUIT Crystal 3.6864 MHz 3.6864 MHz Clock Transmit Control "1" : Data Signal (SD) "0" : Voice Signal (TI) Transmit Data Transmit Data Timing Clock *NC : MSM6948- *MCK ...
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... Semiconductor PACKAGE DIMENSIONS DIP18-P-300-2.54 MSM6948-3/6948-3V (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating Solder plate thickness more Package weight (g) 1.30 TYP. 12/13 ...
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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). MSM6948-3/6948-3V (Unit : mm) Package material Epoxy resin ...