TC43 Datasheet, PDF(3/6 Page) TelCom Semiconductor, Inc – LINEAR BUILDING BLOCK - VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE

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TC43 Datasheet, PDF (3/6 Pages) TelCom Semiconductor, Inc – LINEAR BUILDING BLOCK - VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE

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LINEAR BUILDING BLOCK â

PRELIMINARY INFORMATION

VOLTAGE REFERENCE, DUAL OP AMP,

DUAL COMPARATOR WITH SHUTDOWN MODE

TC43

ELECTRICAL CHARACTERISTICS: (Cont.) TA = Over Operating Temperature Range, VDD = 5.0V Â±10%,

VSS = 0V, SHDN = VDD, unless otherwise specified.

Symbol

Parameter

Test Conditions

Min Typ Max

Unit

Comparators (Cont.)

TDESEL

CMPTR1 Deselect time

(HI-Z from SHDN = VIL)

VIN

Differential Input Voltage Range Both VINs > = VSS

VDD

VIN(CM)

Input Common Mode Voltage Range Note 3, 5

VSS

VDD

VOS

Input Offset Voltage

VCM = (VDD â VSS)/2

â 10

+10

Input Bias Current

IN+ or INâ

VOH

Output High Voltage

RL = 10kâ¦ to VSS,

VDD â 0.3 â

1.8 < VDD < 5.5V

VOL

Output Low Voltage

RL = 10kâ¦ to VDD

0.3

1.8 < VDD < 5.5V

IOH

Output Source Current

VIN (+) = VDD, VIN (â) = VSS

1.3

(Continuous)

VDD = 1.8V, Output

Shorted to VSS

IOL

Output Sink Current

VIN (â) = VDD, VIN (+) = VSS

2.5

(Continuous)

VDD = 1.8V, Output

Shorted to VDD

tPD1

Response Time

100mV Overdrive (Note 4) â

tPD2

Response Time

10mV Overdrive (Note 4) â

ROUT(SD)

Output Resistance in Shutdown SHDN = VSS

COUT(SD)

Output Capacitance in Shutdown SHDN = VSS (Note 5)

Voltage Reference

VREF

Reference Voltage

No Load

1.152 1.200 1.248

Load Regulation

0mA < ISOURCE < 5mA

VDD = 5V, TA = 25Â°C

â 300

CL(REF)

Load Capacitance

100

NVREF

Voltage Noise

100Hz to 100kHz

100

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. VDD = 5.0V; CL = 100pF.

5. Guaranteed by Design

Âµsec

mVDC

Âµsec

Mâ¦

ÂµV/mA

ÂµVRMS

DETAILED DESCRIPTION

Operational Amplifiers

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 15ÂµA (fully

enabled). It combines two comparators, two op amps and a

voltage reference in a single package. A shutdown mode is

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.

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

âstill awakeâ comparator and voltage reference can be used

as wake-up timer, power supply monitor, LDO controller or

other continuous duty circuit function.

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.

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