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参数资料
| 型号： | MC33219AP |
| 厂商： | MOTOROLA INC |
| 元件分类： | 无绳电话/电话 |
| 英文描述： | VOICE SWITCHED SPEAKERPHONE CIRCUIT |
| 中文描述： | SPEAKER PHONE CIRCUIT, PDIP24 |
| 封装： | 0.300 INCH, PLASTIC, DIP-24 |
| 文件页数： | 24/28页 |
| 文件大小： | 562K |
| 代理商： | MC33219AP |
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MC33219A
24
MOTOROLA ANALOG IC DEVICE DATA
short, and the resistor and capacitor for each of these pins
should be physically close to the pins. All other input pins
should also be considered sensitive to RFI signals.
In The Final Analysis ...
Proper operation of a speakerphone is a combination of
proper mechanical (acoustic) design in addition to proper
electronic design.The acoustics of the enclosure must be
considered early in the design of a speakerphone. In
general, electronics cannot compensate for poor acoustics,
low speaker quality, low microphone quality, or any
combination of these items. Proper acoustic separation of
the speaker and microphone is essential. The physical
location of the microphone, along with the characteristics of
the selected microphone, will play a large role in the quality
of the transmitted sound. The microphone and speaker
vendors can usually provide additional information on the
use of their products.
In the final analysis, the circuit will have to be fine–tuned to
match the acoustics of the enclosure, the specific hybrid, and
the specific speaker and microphone selected. The
components shown in this data sheet should be considered
as starting points only. The gains of the transmit and receive
paths are easily adjusted at the microphone and receive
amplifiers, respectively. The switching response can then be
fine tuned by varying (in small steps) the components at the
level detector inputs (TLI, RLI) until satisfactory operation is
obtained for both long and short lines.
For additional information on speakerphone design please
refer to The Bell System Technical Journal, Volume XXXIX
(March 1960, No. 2).
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| MC33232DR2 | 功能描述:功率因数校正 IC Critical Mode PFC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| MC33232DR2G | 功能描述:功率因数校正 IC Critical Mode PFC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
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