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LTC222 Datasheet(PDF) 1 Page - Linear Technology |
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LTC222 Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LTC201A/LTC202/LTC203 1 201a23fb ■ Micropower Operation ■ Single 5V or ±15V Supply Operation ■ Low Charge Injection ■ Low RON ■ Low Leakage ■ Guaranteed Break Before Make ■ Latch Resistant Design ■ TTL/CMOS Compatible ■ Improved Second Source for DG2O1A/DG202 The LTC ®201A, LTC202, and LTC203 are micropower, quad CMOS analog switches which typically dissipate only 250µW from ±15V supplies and 40µW from a single 5V supply. The switches have 65Ω typical on resistance and a very high off resistance. A break-before-make characteristic, inherent in these switches, prevents the shorting of two channels. With a supply voltage of ±15V, the signal range is ±15V. These switches have special charge compensation circuitry which greatly reduces charge injection to a maximum of ±25pC (±15V supplies). The LTC201A, LTC202, and LTC203 are designed for applications such as programmable gain amplifiers, analog multiplexers, sample-and-hold circuits, precision charge switching and remote switching. These three devices are differentiated by the type of switch action, as shown in the logic table. Micropower, Low Charge Injection, Quad CMOS Analog Switches ■ Supply Current ................... I+ = 40µA, I– = 5µA Max ■ Charge Injection ±15V Supplies ................................. ±25pC Max Single 5V Supply .................................. 2pC Typ ■ RON ............................................................. 65Ω Typ ■ Signal Range .................................................... ±15V Micropower 100Hz to 1MHz V-to-F Converter FEATURES DESCRIPTIO KEY SPECIFICATIO S TYPICAL APPLICATIO – + S1 D1 D3 S3 IN2 IN3 IN1 IN4 V– S4 S2 GND V+ 1.5M VIN OV TO 5V 50k 220k* 2k 47k 10M 3pF 2N3906 1N4148 100Ω 2N3904 12k 0.01µF CLK VDD 1µF 1µF 7V TO 10V 10k 100k LT1004-2.5 500pF POLYSTYRENE 0.022µF 2µF LINEARITY IS 0.02% QUIESCENT CURRENT IS 90µA SUPPLY CURRENT IS 360µA AT 1MHz *1%FILM RESISTOR VSS Q7 CD4024 LTC201A/LTC202 RESET FOUT 74C14 NC 0.33µF 100Hz TRIM (240k* TYP) LTC201A/202/203•TA01 D2 D4 – + 1/2 LT ®1178 1/2 LT1178 , LTC and LT are registered trademarks of Linear Technology Corporation. |
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