ALD2711A/ALD2711B

Advanced Linear Devices

6

ALD2711

TYPICAL APPLICATIONS

PHOTO DETECTOR CURRENT TO

VOLTAGE CONVERTER

LOW VOLTAGE INSTRUMENTATION AMPLIFIER

WIEN BRIDGE OSCILLATOR (RAIL-TO-RAIL)

SINE WAVE GENERATOR

RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER

RAIL-TO-RAIL WAVEFORM

Performance waveforms.

Upper trace is the output of a

Wien Bridge Oscillator. Lower

trace is the output of Rail-to-Rail

voltage follower.

0V

+5V

OUTPUT

0V

+5V

INPUT

V- = - 2.5V

10M

10M

10M

10M

10M

10M

RIN = 10MΩ Accuracy limited by resistor tolerances and input offset voltage

V+ = +2.5V

0.1

µF

0.1

µF

VOUT

V-

≤ VIN ≤ V+

V-

≤ VOUT ≤ V+

V1

V4

V3

V2

VOUT = V1 + V2 - V3 - V4

1/2 ALD2711

HIGH INPUT IMPEDANCE RAIL-TO-RAIL PRECISION

DC SUMMING AMPLIFIER

RAIL-TO-RAIL WINDOW COMPARATOR

10K

10K

10K

+2.5V

-2.5V

.01

µF

C = .01

µF

R = 10K

1/2 ALD2711

f =

1

= 1.6KHZ

2

πRC

~~

VOUT

* See Rail-to-Rail Waveform

+5V

+

-

+

-

100K

3

2

5

6

8

4

1

7

1/4 74 C00

1/2 ALD2711

100K

1/2 ALD2711

-

+

OUTPUT

5V

0.1

µF

* See Rail-to-Rail Waveform

0

≤ VIN ≤ 5V

VIN

ZIN = 1013Ω

~

1/2 ALD2711

+

-

+2.5V

-2.5V

I

PHOTODIODE

1/2 ALD2711

50K

100K

100K

f max = 20KHz

-40mV

-

+

0.1

µF

0.1

µF

V+

V-

0.1

µF

0.1

µF

V+

V-

-

+

100K

100K

-

500K

0.1

µF

V+

V+ 1M

+

1M

V-

V-

0.1

µF

1M

1/2 ALD2711

1/2 ALD2711

GAIN = 25 V-

V+ = +1.0V V- = -1.0V Short Circuit Input Current 1

µA

1M

1/2 ALD2711