11

LT1055/LT1056

100kHz Voltage Controlled Oscillator

–

+

15V

–15V

7

4

3

2

6

LT1056

OUTPUT

0V TO 10V

SETTLING TIME TO 2mV

(0.8 LSB) = 1.5µs TO 2µs

0 TO 2

OR 4mA

12-BIT CURRENT OUTPUT D/A

CONVERTER (e.g., 6012,565

OR DAC-80)

LT1055/56 TA09

12-Bit Voltage Output D/A Converter

10k

10k

100pF

LT1055/56 TA10

–

+

7

4

3

2

6

LT1055

10k

INPUT

1N965

1µF

510

Ω

330

Ω

125V

2N5415

50k

50k

1M

1M

1N4148

1N4148

2N2222

2N2907

1k

1k

2N3440

27

Ω

27

Ω

OUTPUT

2N5415

2N3440

330

Ω

510

Ω

1N965

1µF

–125V

33pF

100k

10k

±25mA OUTPUT

HEAT SINK OUTPUT

TRANSISTORS

±120V Output Precision Op Amp

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

–

+

–

+

–

+

–

+

X1

X2

U1

U2

COM

VR

Y1

Y2

+V

CC

W

Z1

Z2

GT

UP

–V

+15V

SINE OUT

0kHs TO 100kHs

–15

AD639

2

3

15V

7

6

4

–15V

–15V

68k

68k

10k

4.5k

22.1k

1k

LT1056

FINE

DISTORTION

TRIMS

15V

15V

15V

15V

–15V

–15V

–15V

–15V

LT1055/56 TA08

50k

10Hz

DISTORTION

TRIM

22M

POLYSTYRENE

500pF

7

4

3

2

6

LT1056

22k

15pF

HP5082-

2810

3

2

10k*

10k

1k

4.7k

4.7k

*1% FILM RESISTOR

=1N4148

FREQUENCY LINEARITY = 0.1%

FREQUENCY STABILITY = 150ppm/°C

SETTLING TIME = 1.7µs

DISTORTION = 0.25% AT 100kHz,

0.07% AT 10zHz

1k

5k

FREQUENCY

TRIM

LT1011

8

7

1

4

LM329

0.01µF

2.5k*

10k*

5k*

2N4391

2N4391

2N4391

6

7

4

15V

–15V

LT1056

100kHz

DISTORTION

TRIM

2k

9.09k*

0V TO 10V

INPUT

2

3

10k

20pF