CA3440
Typical Applications
+9V
22MΩ
4.7MΩ
2
2.2MΩ
INPUT
500pF
2µF
+
4.7MΩ
1, 2
10
7
4, 5 DIODES
FROM CA3086
1
3
7
12MΩ
1.2MΩ
22MΩ
8 +5V
7
-
CA3440
+
5
4
8
10MΩ
9, 11
6
OUTPUT
1.2MΩ
2
-
CA3440
6
4
2.35V
AT 200µA
+
1
5
3
6, 8
R
IN
>20MΩ
Standby Power = 90µW
Gain = 20dB
BW: 20Hz to 3kHz
SR = 0.016V/µs
3
13
FIGURE 3. HIGH INPUT IMPEDANCE AMPLIFIER
FIGURE 4. MICROPOWER BANDGAP REFERENCE
Typical Performance Curves
INPUT AND OUTPUT VOLTAGE EXCURSIONS FROM
THE POSITIVE AND NEGATIVE SUPPLY VOLTAGE (V)
2.0
1.6
1.2
0.8
0.4
0 = (V+ OR V-)
0
-0.4
-0.8
-1.2
-1.6
-2.0
0
5
10
SUPPLY VOLTAGE (V)
15
V
ICR
-
V
ICR
+
V
O
+
1
10
100
1000
SUPPLY CURRENT (nA)
10,000
V
O
-
T
A
= 25
o
C
R
L
= 100kΩ
1000
T
A
= 25
o
C
V
S
=
±5V
SET CURRENT (nA)
100
10
FIGURE 5. OUTPUT VOLTAGE SWING AND COMMON MODE
INPUT VOLTAGE RANGE vs SUPPLY VOLTAGE
FIGURE 6. SET CURRENT vs SUPPLY CURRENT
3-149
HARRIS [ HARRIS CORPORATION ]
