TYPICAL APPLICATIONS
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
PHOTO DETECTOR CURRENT TO
VOLTAGE CONVERTER
R
F
= 5M
5V
~
12
Z
= 10
Ω
IN
0.1µF
I
-
V
1 X R
+2.5V
OUT
=
F
-
OUTPUT
PHOTODIODE
V
+
IN
1/2 ALD2701
R
L
= 100K
+
-2.5V
1/2 ALD2701
0≤ V ≤ 5V
IN
* See Rail to Rail Waveform
HIGH INPUT IMPEDANCE RAIL-TO-RAIL
PRECISION DC SUMMING AMPLIFIER
RAIL-TO-RAIL WAVEFORM
+5V
INPUT
V+ = +2.5V
0V
10M
V
1
+
+5V
1/2 ALD2701
0.1µF
V
OUTPUT
2
0V
10M
10M
V
OUT
10M
0.1µF
-
V
V- ≤ V ≤ V+
IN
Performance waveforms.
Upper trace is the output of a
Wien Bridge Oscillator. Lower
trace is the output of Rail-to-Rail
voltage follower.
3
4
V
V- ≤ V
OUT
≤ V+
V- = - 2.5V
10M
10M
V
= V + V - V - V
1 2 3 4
OUT
R
= 10MΩ Accuracy limited by resistor tolerances and input offset voltage
IN
WIEN BRIDGE OSCILLATOR (RAIL-TO-RAIL)
SINE WAVE GENERATOR
RAIL-TO-RAIL WINDOW COMPARATOR
+5V
8
1/2 ALD2701
3
2
V
REF (HIGH)
+2.5V
-
+
-
100K
1/4 74 C00
1
V
OUT
1/2 ALD2701
+
10K
-2.5V
10K
V
OUT
V
IN
5
6
+
-
.01µF
7
C = .01µF
10K
R = 10K
V
REF (LOW)
100K
4
~
~
= 1.6KHZ
1/2 ALD2701
f =
1
2πRC
V
FOR V
REF (LOW)
< V < V
IN REF(HIGH)
OUT (LOW)
*See Rail to Rail Waveform
LOW VOLTAGE INSTRUMENTATION AMPLIFIER
0.1µF
V+
1M
+
-
500K
100K
100K
0.1µF
V+
+
V-
0.1µF
1/2 ALD2701
f max = 20KHz
V
OUT
50K
V+ 1M
-40mV ≤ V ≤ 40mV
IN
-
0.1µF
V+
-
V-
0.1µF
100K
ALD1701
V-
1M
100K
1M
+
V-
0.1µF
GAIN = 25 V- ≤ V
≤ V+ All resistors are 1%
V+ = +1.0V V- = -1.0V Short Circuit Input Current 1µA
OUT
1/2 ALD2701
ALD2701A/ALD2701B
ALD2701
Advanced Linear Devices
6 of 9
ALD [ ADVANCED LINEAR DEVICES ]
