LM231N National Semiconductor, LM231N Datasheet - Page 2

• Manufacturer Part Number: LM231N
• Description: Voltage / Frequency (V/F & F/V) Converter IC
• Manufacturer: National Semiconductor

Specifications of LM231N

• Frequency: 100kHz
• No. Of Pins: 8
• Mounting Type: Through Hole
• Converter Type: Voltage/Frequency
• Operating Temperature Max: 85°C
• Peak Reflow Compatible (260 C): No
• Converter Function: VFC
• Full Scale Frequency: 100
• Power Supply Requirement: Single
• Single Supply Voltage (typ): 5/9/12/15/18/24/28V
• Single Supply Voltage (max): 40V
• Single Supply Voltage (min): 4V
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Package Type: MDIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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VFC Non-Linearity (Note 4)
VFC Non-Linearity in Circuit of Figure 3
Conversion Accuracy Scale Factor (Gain)
Temperature Stability of Gain
Change of Gain with V
Rated Full-Scale Frequency
Gain Stability vs. Time (1000 Hours)
Over Range (Beyond Full-Scale)
Frequency
Offset Voltage
Bias Current
Offset Current
Common-Mode Range
Timer Threshold Voltage, Pin 5
Input Bias Current, Pin 5
V
Output Current
Change with Voltage
Current Source OFF Leakage
SAT PIN 5
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
All specifications apply in the circuit of Figure 4, with 4.0V ≤ V
INPUT COMPARATOR
TIMER
CURRENT SOURCE (Pin 1)
Supply Voltage, V
Output Short Circuit to Ground
Output Short Circuit to V
Input Voltage
Package Dissipation at 25˚C
Lead Temperature (Soldering, 10 sec.)
ESD Susceptibility (Note 5)
LM231, LM231A
LM331, LM331A
LM231/LM331
LM231A/LM331A
LM231/LM331
LM231A/LM331A
All Devices
LM231/LM331
LM231A/LM331A
LM231, LM231A
LM331, LM331A
Dual-In-Line Package (Plastic)
(Reset)
Parameter
S
S
CC
4.5V ≤ V
T
V
V
T
4.5V ≤ V
10V ≤ V
V
T
V
T
T
T
V
0V ≤ V
V
V
I = 5 mA
R
0V ≤ V
MIN
MIN
MIN
MIN
MIN
MIN
S
IN
IN
IN
S
PIN 5
PIN 5
S
1.25W (Note 3)
= 15V, f = 10 Hz to 11 kHz
= 15V
= 14 kΩ, V
= −10V, R
= −10V
= −11V
−0.2V to +V
≤ T
≤ T
≤ T
≤ T
≤ T
≤ T
= 10V
= 10V
PIN 5
PIN 1
Continuous
Continuous
S
A
A
A
A
A
A
S
S
≤ 40V
≤ T
≤ T
≤ T
≤ T
≤ T
≤ T
≤ 20V
≤ 10V
≤ 9.9V
≤ 10V
260˚C
Conditions
500V
MAX
MAX
MAX
MAX
MAX
MAX
S
PIN 1
40V
= 14 kΩ
S
, 4.5V ≤ V
S
= 0
2
≤ 40V, T
Operating Ratings
Package Thermal Resistance
S
Operating Ambient Temperature
Supply Voltage, V
A
≤ 20V
=25˚C, unless otherwise specified.
LM231, LM231A
LM331, LM331A
8-Lead Plastic DIP
0.95
0.90
10.0
−0.2
0.63
Min
126
116
10
Package
S
±
±
±
±
0.006
0.667
1.00
1.00
0.01
0.22
Typ
0.003
0.006
0.024
±
±
±
−80
200
200
135
136
0.2
0.02
±
±
±
±
30
20
10
3
4
3
8
(Note 2)
100˚C/W
V
−25˚C to +85˚C
±
±
±
CC
±
−300
±
±
1000
Max
1.05
1.10
0.06
0.70
θ
±
±
±
±
500
144
156
0.1
0.5
1.0
0.01
0.02
0.14
150
100
100
0˚C to +70˚C
J-A
+4V to +40V
50
10
14
10
−2.0
% Full- Scale
% Full- Scale
% Full- Scale
%Full- Scale
ppm/˚C
ppm/˚C
kHz/V
kHz/V
Units
x V
%/V
%/V
kHz
mV
mV
mV
nA
nA
nA
nA
nA
µA
µA
µA
%
V
V
S