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CM88L70PI 参数 Datasheet PDF下载

CM88L70PI图片预览
型号: CM88L70PI
PDF下载: 下载PDF文件 查看货源
内容描述: CMOS集成双音多频接收器, 3 VOLT版本 [CMOS INTEGRATED DTMF RECEIVER, 3 VOLT VERSION]
分类和应用: 电信集成电路电信信令电路电信电路光电二极管
文件页数/大小: 8 页 / 471 K
品牌: CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
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CALIFORNIA MICRO DEVICES
CM88L70/70C
CMOS INTEGRATED DTMF RECEIVER, 3 VOLT VERSION
Features
• 2.7 to 3.6 volt operating range
• Full DTMF receiver
• Less than 18mW power consumption
• Industrial temperature range
• Uses quartz crystal or ceramic resonators
• Adjustable acquisition and release times
• 18-pin DIP, 20-pin QSOP, 18-pin SOIC,
20-pin PLCC, 20-pin TSSOP
•
CM88L70
- Power down mode
- Inhibit mode
- Buffered oscillator output (OSC 3) to
drive other devices
Applications
• PCMCIA
• Portable TAD
• Mobile radio
• Remote control
• Remote data entry
• Call limiting
• Telephone answering systems
• Paging systems
Product Description
The CAMD CM88L70/70C provides full DTMF receiver capability by integrating both the bandsplit filter and digital decoder
functions into a single 18-pin DIP, SOIC, or 20-pin PLCC, TSSOP, or QSOP package. The CM88L70/70C is manufactured using
state-of-the-art CMOS process technology for low power consumption (35mW, max.) and precise data handling. The filter
section uses a switched capacitor technique for both high and low group filters and dial tone rejection. The CM88L70/70C
decoder uses digital counting techniques for the detection and decoding of all 16 DTMF tone pairs into a 4-bit code. This
DTMF receiver minimizes external component count by providing an on-chip differential input amplifier, clock generator, and
a latched three-state interface bus. The on-chip clock generator requires only a low cost TV crystal or ceramic resonator as
an external component.
Block Diagram
© 2000 California Micro Devices Corp. All rights reserved.
6/16/2000
C0451098
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
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