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Intersil Electronic Components Datasheet



ICL8049

Antilog Amplifier


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ICL8049 pdf
July 1999
Features
®
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ICL8049
Antilog Amplifier
• Full Scale Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 0.5%
• Temperature Compensated Operation . . . . 0oC to 70oC
• Scale Factor, Adjustable . . . . . . . . . . . . . . . . 1V/Decade
• Dynamic Voltage Range . . . . . . . . . . . . . . . . . . . . .60dB
The ICL8049 is a monolithic antilogarithmic amplifier that is
fully temperature compensated and is nominally designed to
provide 1 decade of output voltage for each 1V change of
input voltage. For increased flexibility, the scale factor, refer-
ence current and offset voltage are externally adjustable.
• Dual JFET Input Op Amps
Part Number Information
PART NUMBER
ICL8049BCJE
ICL8049CCJE
ERROR (25oC)
10mV
25mV
TEMPERATURE RANGE (oC)
0 to 70
0 to 70
PACKAGE
16 Ld CERDIP
16 Ld CERDIP
Pinout
ICL8049 (CERDIP)
TOP VIEW
A1 INPUT 1
GAIN 2
IREF
A1 OFFSET
NULL
A1 OFFSET
NULL
V-
3
4
5
6
A1 OUTPUT 7
NC 8
16 VIN
15 GND
14 A2 INPUT
13
A2 OFFSET
NULL
12 A2 OFFSET
NULL
11 V+
10 VOUT
9 NC
Functional Diagram
VREF
ICL8049
3 IREF
VIN
16
GAIN
2
Q1 Q2
--
A1 A2
++
1
A1 INPUT
7
A1 OUTPUT
15
GND
A2 INPUT
14 fOUT
10
VOUT
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
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ICL8049 pdf
ICL8049
Absolute Maximum Ratings
Operating Conditions
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V
VIN (Input Current) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V
IREF (Reference Current) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Voltage Between Offset Null and V+ . . . . . . . . . . . . . . . . . . . ±0.5V
Output Short Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . Indefinite
Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW
Lead Temperature (Soldering 10 Sec.) . . . . . . . . . . . . . . . . . 300oC
Operating Temperature Range . . . . . . . . . . . . . . . . . . . 0oC to 70oC
Storage Temperature Range . . . . . . . . . . . . . . . . . . -65oC to 150oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications VS = ±15V, TA = 25oC, IREF = 1mA, Scale Factor Adjusted for 1 Decade (Out) per Volt (In), Unless Oth-
erwise Specified
PARAMETERS
TEST CONDITIONS
Dynamic Range (VOUT)
Error, Absolute Value
Temperature Coefficient, Referred
to VIN
Power Supply Rejection Ratio
Offset Voltage (A1 and A2)
Wideband Noise
Output Voltage Swing
Power Consumption
VOUT = 10mV to 10V
0V VIN 2V
TA = 0oC to 70oC,
0V VIN 3V
VIN = 3V
Referred to Input,
for VIN = 0V
Before Nulling
Referred to Input,
for VIN = 0V
RL = 10k
RL = 2k
Supply Current
ICL4049BC
MIN TYP MAX
60 -
-
- 3 15
- 20 75
ICL8049CC
MIN TYP MAX
60 -
-
- 5 25
- 30 150
UNITS
dB
mV
mV
- 0.38 -
- 0.55 -
mV/oC
- 2.0 -
- 2.0 -
µV/V
- 15 25
- 26 -
±12 ±14
-
±10 ±13
-
- 150 200
- 5 6.7
- 15 50
- 26 -
±12 ±14
-
±10 ±13
-
- 150 200
- 5 6.7
mV
µVRMS
V
V
mW
mA
2



Part Number ICL8049
Description Antilog Amplifier
Maker Intersil Corporation - Intersil Corporation
Total Page 3 Pages
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