LTC1843 datasheet(6/12 Pages) LINER

Part #	LTC1843

Description	Ultralow Power Dual Comparators with Reference

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Manufacturer	LINER [Linear Technology]

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LTC1841/LTC1842/LTC1843

PIN FUNCTIONS

OUT A (Pin 1): Comparator A Open-Drain Output. Output

can typically sink greater than 20mA.

V – (Pin 2): Negative Supply.

IN A+ (Pin 3): Noninverting Input of Comparator A. Input

common mode range extends from V – to V + – 1.3V. Input

current is typically 10pA at 25

°C.

IN A – (Pin 4) (LTC1841): Inverting Input of Comparator A.

Input common mode range extends from V – to V + – 1.3V.

Input current is typically 10pA at 25

°C.

IN B+ (Pin 4) (LTC1842): Noninverting Input of Compara-

tor B. Input common mode range extends from V – to

V + – 1.3V. Input current is typically 10pA at 25

°C.

IN B– (Pin 4) (LTC1843): Inverting Input of Comparator B.

Input common mode range extends from V – to V + – 1.3V.

Input current is typically 10pA at 25

°C.

IN B– (Pin 5) (LTC1841): Inverting Input of Comparator B.

Input common mode range extends from V – to V + – 1.3V.

Input current is typically 10pA at 25

°C.

HYST (Pin 5) (LTC1842/LTC1843): Hysteresis Input.

Connect to REF if not used. Input voltage range is from

VREF to VREF – 50mV.

IN B+ (Pin 6) (LTC1841): Noninverting Input of Compara-

tor B. Input common mode range extends from V – to

V + – 1.3V. Input current is typically 10pA at 25

°C.

REF (Pin 6) (LTC1842/LTC1843): Reference Output.

1.182V with respect to V –. Can typically source greater

than 1mA and sink 10

µA at 25°C. Can drive 0.01µF bypass

capacitor without oscillation.

V + (Pin 7) (LTC1841): Positive Supply. 2V to 11V.

V + (Pin 7) (LTC1842/LTC1843): Positive Supply. 2.5V to

11V.

OUT B (Pin 8): Comparator B Open-Drain Output. Output

can typically sink greater than 20mA.

1841 PD

V –

V +

OUT A

LTC1841

1

2

3

4

8

7

6

5

IN A+

IN A–

IN B+

IN B–

OUT B

–

+

–

+

A

B

1842 PD

V –

V +

OUT A

LTC1842

1

2

3

4

8

7

6

5

IN A+

IN B+

REF

HYST

OUT B

–

+

–

+

A

B

1843 PD

V –

V +

OUT A

LTC1843

1

2

3

4

8

7

6

5

IN A+

IN B–

REF

HYST

OUT B

–

+

–

+

A

B

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