V =

L

R

4

R + R

3

4

V =

H

R2

R + R

1

2

3 V

A1

A2

D1

(2)

D2

(2)

R

5

10 kW

R

6

5.1 kW

R

7

5.1 kW

R

IN

2 kW

(1)

3 V

3V

Q1

(3)

R

1

V

H

V

L

R

2

1/2

TLV2369

1/2

TLV2369

3 V

V

OUT

V

IN

3 V

R

3

R

4

Copyright © 2016, Texas Instruments Incorporated

15

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SBOS757 – MAY 2016

Product Folder Links: TLV369 TLV2369

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Copyright © 2016, Texas Instruments Incorporated

System Examples (continued)

8.3.2 Window Comparator

Figure 18 shows the TLV2369 used as a window comparator. The threshold limits are set by VH and VL, with VH

greater than VL. When VIN is less than VH, the output of A1 is low. When VIN is greater than VL, the output of A2

is low. Therefore, both op amp outputs are at 0 V as long as VIN is between VH and VL. This architecture results

in no current flowing through either diode, Q1 is in cutoff, with the base voltage at 0 V, and VOUT forced high.

Figure 18. TLV2369 as a Window Comparator

If VIN falls below VL, the output of A2 is high, current flows through D2, and VOUT is low. Likewise, if VIN rises

above VH, the output of A1 is high, current flows through D1, and VOUT is low. The window comparator threshold

voltages are set as shown by Equation 8 and Equation 9:

(8)

(9)

9 Power Supply Recommendations

The TLV369 family is specified for operation from 1.8 V to 5.5 V (±0.9 V to ±2.75 V); many specifications apply

from –40°C to +125°C. The Typical Characteristics section presents parameters that can exhibit significant

variance with regard to operating voltage or temperature.

CAUTION

Supply voltages larger than 7 V can permanently damage the device (see the Absolute

Maximum Ratings table).

Place 0.1-

μF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or high-

impedance power supplies. For more detailed information on bypass capacitor placement; see the Layout

Guidelines section.