ICL8048
Data Sheet
August 1999
File Number
2865.2
Log Ampli鏗乪r
The ICL8048 is a monolithic logarithmic ampli鏗乪r capable of
handling six decades of current input, or three decades of
voltage input. It is fully temperature compensated and is
nominally designed to provide 1V of output for each decade
change of input. For increased 鏗俥xibility, the scale factor,
reference current and offset voltage are externally
adjustable.
Features
鈥?Full Scale Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 0.5%
鈥?Temperature Compensated Operation . . . . . . 0
o
C to 70
o
C
鈥?Scale Factor, Adjustable. . . . . . . . . . . . . . . . . 1V/Decade
鈥?Dynamic Current Range. . . . . . . . . . . . . . . . . . . . . 120dB
鈥?Dynamic Voltage Range . . . . . . . . . . . . . . . . . . . . . . 60dB
鈥?Dual JFET Input Op Amps
PKG.
NO.
Ordering Information
PART
NUMBER
ICL8048BCJE
ERROR TEMPERATURE
(25
o
C)
RANGE (
o
C)
30mV
0 to 70
PACKAGE
Functional Diagram
ICL8048
V
REF
Q
1
Q
2
16
I
REF
16 Ld CERDIP F16.3
Pinout
ICL8048
(CERDIP)
TOP VIEW
V
IN
f
IN
2
GND
1
-
A
1
+
+
A
2
V
OUT
10
-
GND
I
IN
NC
A
1
OFFSET
NULL
A
1
OFFSET
NULL
V-
A
1
OUTPUT
NC
1
2
3
4
5
6
7
8
16 I
REF
15 GAIN
14 NC
A
2
OFFSET
NULL
12 A
2
OFFSET
NULL
11 V+
13
10 V
OUT
9 NC
7
A
1
OUTPUT
15
GAIN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Copyright
漏
Intersil Corporation 1999