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LOG100 数据表(PDF) 2 Page - Texas Instruments

部件名 LOG100
功能描述  LOGARITHMIC AND LOG RATIO AMPLIFIER
PDF  11 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LOG100 数据表(HTML) 2 Page - Texas Instruments

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®
LOG100
2
SPECIFICATIONS
ELECTRICAL
T
A = +25°C and ±VCC = ±15V, after 15 minute warm-up, unless otherwise specified.
LOG100JP
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TRANSFER FUNCTION
V
OUT = K Log (I1/I2)
Log Conformity Error(1)
Either I
1 or I2
Initial
1nA to 100
µA (5 decades)
0.04
0.1
%
1nA to 1mA (6 decades)
0.15
0.25
%
Over Temperature
1nA to 100
µA (5 decades)
0.002
%/
°C
1nA to 1mA (6 decades)
0.001
%/
°C
K Range(2)
1, 3, 5
V/decade
Accuracy
0.3
%
Temperature Coefficient
0.03
%/
°C
ACCURACY
Total Error(3)
K = 1,(4) Current Input Operation
Initial
I
1, I2 = 1mA
±55
mV
I
1, I2 = 100µA
±30
mV
I
1, I2 = 10µA
±25
mV
I
1, I2 = 1µA
±20
mV
I
1, I2 = 100nA
±25
mV
I
1, I2 = 10nA
±30
mV
I
1, I2 = 1nA
±37
mV
vs Temperature
I
1, I2 = 1mA
±0.20
mV/
°C
I
1, I2 = 100µA
±0.37
mV/
°C
I
1, I2 = 10µA
±0.28
mV/
°C
I
1, I2 = 1µA
±0.033
mV/
°C
I
1, I2 = 100nA
±0.28
mV/
°C
I
1, I2 = 10nA
±0.51
mV/
°C
I
1, I2 = 1nA
±1.26
mV/
°C
vs Supply
I
1, I2 = 1mA
±4.3
mV/V
I
1, I2 = 100µA
±1.5
mV/V
I
1, I2 = 10µA
±0.37
mV/V
I
1, I2 = 1µA
±0.11
mV/V
I
1, I2 = 100nA
±0.61
mV/V
I
1, I2 = 10nA
±0.91
mV/V
I
1, I2 = 1nA
±2.6
mV/V
INPUT CHARACTERISTICS (of Amplifiers A
1 and A2)
Offset Voltage
Initial
±0.7
±5mV
vs Temperature
±80
µV/°C
Bias Current
Initial
15(5)
pA
vs Temperature
Doubles Every 10
°C
Voltage Noise
10Hz to 10kHz, RTI
3
µVrms
Current Noise
10Hz to 10kHz, RTI
0.5
pArms
AC PERFORMANCE
3dB Response(6), I
2 = 10µA
1nA
C
C = 4500pF
0.11
kHz
1
µAC
C = 150pF
38
kHz
10
µAC
C = 150pF
27
kHz
1mA
C
C = 50pF
45
kHz
Step Response(6)
Increasing
C
C = 150pF
1
µA to 1mA
11
µs
100nA to 1
µA
7
µs
10nA to 100nA
110
µs
Decreasing
C
C = 150pF
1mA to 1
µA
45
µs
1
µA to 100nA
20
µs
100nA to 10nA
550
µs
OUTPUT CHARACTERISTICS
Full Scale Output (FSO)
±10
V
Rated Output
Voltage
I
OUT = ±5mA
±10
V
Current
V
OUT = ±10V
±5mA
Current Limit
Positive
12.5
mA
Negative
15
mA
Impedance
0.05
Ω



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