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TC43EPR Datasheet(PDF) 3 Page - TelCom Semiconductor, Inc |
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TC43EPR Datasheet(HTML) 3 Page - TelCom Semiconductor, Inc |
3 / 6 page 3 TC43 LINEAR BUILDING BLOCK – VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE PRELIMINARY INFORMATION ELECTRICAL CHARACTERISTICS: (Cont.) TA = Over Operating Temperature Range, VDD = 5.0V ±10%, VSS = 0V, SHDN = VDD, unless otherwise specified. Symbol Parameter Test Conditions Min Typ Max Unit Comparators (Cont.) TDESEL CMPTR1 Deselect time — 5 — µsec (HI-Z from SHDN = VIL) VIN Differential Input Voltage Range Both VINs > = VSS —— VDD V VIN(CM) Input Common Mode Voltage Range Note 3, 5 VSS —VDD V VOS Input Offset Voltage VCM = (VDD – VSS)/2 – 10 — +10 mVDC IB Input Bias Current IN+ or IN– —50 — pA VOH Output High Voltage RL = 10kΩ to VSS,VDD – 0.3 — — V 1.8 < VDD < 5.5V VOL Output Low Voltage RL = 10kΩ to VDD — — 0.3 V 1.8 < VDD < 5.5V IOH Output Source Current VIN (+) = VDD, VIN (–) = VSS 1.3 3 8 mA (Continuous) VDD = 1.8V, Output Shorted to VSS IOL Output Sink Current VIN (–) = VDD, VIN (+) = VSS 2.5 6 15 mA (Continuous) VDD = 1.8V, Output Shorted to VDD tPD1 Response Time 100mV Overdrive (Note 4) —15 — µsec tPD2 Response Time 10mV Overdrive (Note 4) — 60 — µsec ROUT(SD) Output Resistance in Shutdown SHDN = VSS 20 — — M Ω COUT(SD) Output Capacitance in Shutdown SHDN = VSS (Note 5) — 3 5 pF Voltage Reference VREF Reference Voltage No Load 1.152 1.200 1.248 V Load Regulation 0mA < ISOURCE < 5mA — – 300 — µV/mA VDD = 5V, TA = 25°C CL(REF) Load Capacitance — — 100 pF NVREF Voltage Noise 100Hz to 100kHz — 100 — µVRMS DETAILED DESCRIPTION The TC43 is the first of a series of very low power, Linear Building Block products targeted at low voltage, single supply applications. The TC43 minimum operating voltage is 1.8V and maximum supply current is only 15 µA (fully enabled). It combines two comparators, two op amps and a voltage reference in a single package. A shutdown mode is incorporated for easy adaptation to system power manage- ment schemes. During shutdown, all but one comparator and the voltage reference are disabled (i.e. powered down and with their respective outputs at high impedance). The “still awake” comparator and voltage reference can be used as wake-up timer, power supply monitor, LDO controller or other continuous duty circuit function. Operational Amplifiers Both op amps have rail-to-rail outputs, and an input common range that includes ground. Input offset voltage is 1.0mV and input bias current is only 50pA. The outputs are protected against short circuits. Both op amps are disabled (powered down and outputs at high impedance) during shutdown. Comparators Both comparators feature complimentary outputs with current sinking capability of 2.5mA. Inputs and outputs are rail-to-rail. Comparator CMPTR1 is disabled (powered down and outputs at high impedance) during shutdown. CMPTR2 remains fully enabled during shutdown. NOTES: 1. The reference and one comparator remain active in SHUTDOWN mode. 2. Op Amp configured as a voltage follower (inverting input connected to output; signal applied to non-inverting input). 3. Input common-mode voltage should not be allowed to go negative by more than 0.3V. 4. V DD = 5.0V; CL = 100pF. 5. Guaranteed by Design |
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