Philips Semiconductors

Product specification

LM193/A/293/A/393/A/2903

Low power dual voltage comparator

1995 Nov 27

5

EQUIVALENT CIRCUIT

100k

Ω

500pF

10

0.1

µF

20k

Ω

50k

Ω

20k

Ω

V + /2

V +

30k

Ω

5.1k

Ω

700k

Ω

V – /2

–

+

+ VC

FREQUENCY

CONTROL

VOLTAGE

INPUT

3.0k

Ω

OUTPUT 1

OUTPUT 2

–

+

–

+

+ VREF HI

+ VIN

2RS

RS

2RS

+ V (12VDC)

10K

Ω

LAMP

2N2222

+

–

+

–

+

–

+ 5VDC

360

100

100k

+

–

+ 5VDC

360

100

100k

+

–

+ 5VDC

360

100

100k

+

–

+ 5VDC

360

100

100k

+ VREF 4

+ VREF 3

+ VREF 2

+ VREF 1

VO

+

–

V+

2.0k

Ω

V+

0

VO

I – 100kHz

CRYSTAL

200k

Ω

200k

Ω

100k

Ω

0.1

µF

Crystal–Controlled Oscillator

Limit Comparator

Two–Decade High–Frequency VCO

Visible Voltage Indicator

+

–

V+

TTL–to–MOS Logic Converter

NOTES:

V+ = 30VDC

+ 250m VDC < VC = 50VDC

700H < fO = 100kHz

NOTE:

Input of unused comparators should be grounded.

LM393

LM393

LM393

SL00081

Figure 3. Equivalent Circuit