LTC221 - LTC221是Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches
LTC221是Linear公司的一款开关和多工器产品，LTC221是Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches，本站介绍了LTC221的封装应用图解、特点和优点、功能等，并给出了与LTC221相关的凌力尔特元器件型号供参考。
LTC221 - Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches
LTC221 - Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches - Linear Technology（凌力尔特）
功能描述
The LTC221 and LTC222 are micropower, quad CMOS analog switches which typically dissipate only 250µW from ±15V supplies and 40µW from a single 5V supply. Onboard latches allow the LTC221 and LTC222 to interface directly to most microprocessor buses. The switches have 65 Ohms typical on resistance and a very high off resistance. A break before make characteristic is inherent in these switches to prevent the shorting of two channels. The signal range is ±15V with a supply voltage of ±15V and 0V to 5V with a single 5V supply. The switches have special charge compensation circuitry which greatly reduces charge injection to a maximum of ±25pC (±15V supplies).
The LTC221 and LTC222 are designed for applications such as microprocessor controlled programmable gain amplifiers, automatic test equipment, communication systems, and data acquisition systems. The LTC221 is normally closed and the LTC222 is normally open as shown in the Logic Table.
特点
Micropower OperationSingle 5V or ±15V Supply OperationLow Charge InjectionLow RONLow LeakageGuaranteed Break Before MakeLatch Resistant DesignTTL/CMOS CompatibleImproved Second Source for DG221/DG222Microprocessor Bus Compatible应用
Supply Current.................. I+ = 40μA, I- = 5μA MaxCharge Injection ±15V Supplies.................. ?25pC MaxSingle 5V Supply.................. 2pC TypRON................... 65 Ohms TypSignal Range.................... ±15V以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC221CN | N-16 | C | $3.10 | $2.45 |
| LTC221CN#PBF | N-16 | C | $3.10 | $2.45 |
| LTC221CS | SO-16 | C | $3.50 | $2.85 |
| LTC221CS#PBF | SO-16 | C | $3.50 | $2.85 |
| LTC221CS#TR | SO-16 | C | | $2.91 |
| LTC221CS#TRPBF | SO-16 | C | | $2.91 |
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