ALD2701A/ALD2701B

Advanced Linear Devices

6 of 9

ALD2701

TYPICAL APPLICATIONS

RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER

-

+

OUTPUT

5V

0.1µF

* See Rail to Rail Waveform

0≤ VIN ≤ 5V

VIN

ZIN = 1012Ω

~

1/2 ALD2701

PHOTO DETECTOR CURRENT TO

VOLTAGE CONVERTER

+

-

+2.5V

-2.5V

I

PHOTODIODE

1/2 ALD2701

HIGH INPUT IMPEDANCE RAIL-TO-RAIL

PRECISION DC SUMMING AMPLIFIER

V- = - 2.5V

10M

10M

10M

10M

10M

10M

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

V+ = +2.5V

0.1µF

0.1µF

VOUT

V- ≤ VIN ≤ V+

V- ≤ VOUT ≤ V+

V1

V4

V3

V2

VOUT = V1 + V2 - V3 - V4

1/2 ALD2701

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

RAIL-TO-RAIL WINDOW COMPARATOR

+5V

+

-

+

-

VIN

100K

VREF (HIGH)

VREF (LOW)

3

2

5

6

8

4

1

7

1/4 74 C00

1/2 ALD2701

VOUT

VOUT (LOW) FOR VREF (LOW) < VIN < VREF(HIGH)

100K

1/2 ALD2701

WIEN BRIDGE OSCILLATOR (RAIL-TO-RAIL)

SINE WAVE GENERATOR

10K

10K

10K

+2.5V

-2.5V

.01µF

C = .01µF

R = 10K

1/2 ALD2701

f =

1

= 1.6KHZ

2πRC

~~

*See Rail to Rail Waveform

LOW VOLTAGE INSTRUMENTATION AMPLIFIER

50K

100K

100K

f max = 20KHz

-

+

0.1µF

0.1µF

V+

V-

-

+

100K

100K

1M

-

500K

0.1µF

V+

V+ 1M

+

1M

V-

V-

0.1µF

1M

ALD1701

1/2 ALD2701

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

0.1µF

0.1µF

V+

V-

1/2 ALD2701