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LTC221

Features: Micropower Operation Single 5V or ±15V Supply Operation Low Charge Injection Low RON Low Leakage Guaranteed Break Before Make Latch Resistant Design TLL/CMOS Compatible Improved Second Source for DG221/DG222 Microprocessor Bus CompatiblePinoutSpecificationsVoltages Referenced to V V+ .....

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SeekIC No. : 004402003 Detail

LTC221: Features: Micropower Operation Single 5V or ±15V Supply Operation Low Charge Injection Low RON Low Leakage Guaranteed Break Before Make Latch Resistant Design TLL/CMOS Compatible Improved Second So...

LTC221 Data Sheet

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Part Number:
LTC221
Supply Ability:
5000

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Product Details

Description



Features:

Micropower Operation
Single 5V or ±15V Supply Operation
Low Charge Injection
Low RON
Low Leakage
Guaranteed Break Before Make
Latch Resistant Design
TLL/CMOS Compatible
Improved Second Source for DG221/DG222
Microprocessor Bus Compatible


Pinout

Connection Diagram


Specifications

Voltages Referenced to V
V+ ........................................................................................... 44V
GND......................................................................... 25V
Digital Inputs, S, D (Note 2) ............ 2V to (V+ 2V) or
Digital Inputs, S, D (N2020mA, Whichever Occurs First
Current
Any Input Except S or D ....................................... 30mA
Continuous S or D ................................................ 20mA
Peak S or D
(Pulsed at 1 ms, 10% Duty Cycle Max) ................ 70mA
ESD Susceptibility (Note 3) ......................................4kV
Power Dissipation (Plastic) ..............................  500mW
Power Dissipation (Ceramic) ............................ 900mW
Operating Temperature Range
LTC221C/LTC222C ................................. 0°C to 70°C
LTC221M/LTC222M (OBSOLETE).......55°C to 125°C
Storage Temperature Range .......... 65°C to 150°C
Lead Temperature (Soldering, 10 sec).............. 300°C


Description

The LTC®221 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 65Ω 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.




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