9

LT 2178/LT 2179

Please see the LT2078/LT2079 data sheet for applications

information. All comments relating to specifications, single

supply operation and phase reversal protection are di-

rectly applicable to the LT2178/LT2179.

Micropower 100Hz to 1MHz V-to-F Converter

–

+

–

+

+

+

0V TO 5V

220k*

50k

1MHz

TRIM

100Hz TRIM

240k TYP

2k

2

µF

0.33

µF

S1

D1

D2

S2

S3

D3

D4

S4

0.022

µF

500pF

POLYSTYRENE

3pF

0.01

µF

47k

Q8

2N3906

12k

1.5M

NC

Q7

2N3904

74C14

1N1

1N3

1N4

1N2

GND

RESET

CLK

Q7

CD4024

1

µF

1N4148

1

µF

100

Ω

A2

1/2 LT2178

10k

7V TO 10V

100k

LT1004-2.5

LTC

A1

1/2 LT2178

LT2178/79 • TA03

10M

LINEARITY IS 0.02%

QUIESCENT CURRENT IS 90

µA

SUPPLY CURRENT IS 360

µA AT 1MHz

DRIFT = 50ppm/

°C

*TRWMTR/5 + 120ppm/

°C