LOG102 Datasheet, PDF (2/15 Pages) Texas Instruments – LOGARITHMIC AND LOG RATIO AMPLIFIER

ABSOLUTE MAXIMUM RATINGS⁽¹⁾
PIN DESCRIPTION
Supply Voltage, V+ to V– .................................................................... 36V
Input Voltage ....................................................... V– (–0.5) to V+ (+0.5V)
Input Current ................................................................................... ±10mA
Output Short-Circuit⁽²⁾ .............................................................. Continuous
Operating Temperature .................................................... –40°C to +85°C
Storage Temperature ..................................................... –55°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
Top View
I₁ 1
NC 2
+IN3 3
SO
14 I₂
13 NC
12 +IN4
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) Short circuit to ground, one amplifier per package.
–IN3 4
Vlog out 5
LOG102
11 –IN4
10 GND
ELECTROSTATIC
DISCHARGE SENSITIVITY
V+ 6
VOUT3 7
9 V–
8 VOUT4
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
NC = No Internal Connection
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT
PACKAGE-LEAD
PACKAGE
DESIGNATOR⁽¹⁾
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
MARKING
LOG102AID
"
SO -14
"
D
0°C to +70°C
LOG102A
"
"
"
NOTES: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
ORDERING
NUMBER
LOG102AID
LOG102AIDR
TRANSPORT
MEDIA, QUANTITY
Rails, 58
Tape and Reel, 2500
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, T_A = 0°C to +70°C.
At T_A = +25°C, V_S = ±5V, R_L = 10kΩ, unless otherwise noted.
LOG102AID
PARAMETER
CONDITION
MIN
TYP
MAX
CORE LOG FUNCTION
I_IN / V_{LOG OUT} Equation
LOG CONFORMITY ERROR⁽¹⁾
Initial
over Temperature
GAIN⁽²⁾
Initial Value
Gain Error
vs Temperature
INPUT, A1 and A2
Offset Voltage
vs Temperature
vs Power Supply (PSRR)
Input Bias Current
vs Temperature
Voltage Noise
Current Noise
Common-Mode Voltage Range (Positive)
(Negative)
CMRR
OUTPUT, A2 (V_LOGOUT)
Output Offset, V_OSO, Initial
vs Temperature
Full-Scale Output (FSO)
Short-Circuit Current
1nA to 100µA (5 decades)
1nA to 1mA (6 decades)
1nA to 100µA (5 decades)
1nA to 1mA (6 decades)
1nA to 100µA (5 decades)
1nA to 100µA (5 decades)
T_MIN to T_MAX
T_MIN to T_MAX
V_S = ±4.5V to ±18V
T_MIN to T_MAX
f = 10Hz to 10kHz
f = 1kHz
f = 1kHz
T_MIN to T_MAX
V_S = ±5V Supplies
V_O = log (I₁/I₂)
0.04
0.15
0.0002
0.002
±0.3
1
0.15
±1
0.025
0.05
±0.3
±1.5
±2
5
50
±5
Doubles Every 10°C
3
30
4
(V+) – 2
(V+) – 1.5
(V–) + 2
(V–) + 1.2
90
105
±3
±55
25
(V–) + 1.2
(V+) – 1.5
±18
UNITS
%
%
% / °C
% / °C
V/decade
%
% / °C
mV
µV/°C
µV/V
pA
µVrms
nV/√Hz
fA/√Hz
V
V
dB
mV
µV/°C
V
mA
2
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LOG102
SBOS211A