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NTE890 Datasheet(PDF) 1 Page - NTE Electronics

Part No. NTE890
Description  Integrated Circuit Voltage to Frequency Converter
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Maker  NTE [NTE Electronics]
Homepage  http://www.nteinc.com
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NTE890 Datasheet(HTML) 1 Page - NTE Electronics

   
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NTE890
Integrated Circuit
Voltage to Frequency Converter
Description:
The NTE890 is an integrated circuit in an 8–Lead DIP type package and provides a simple method
of A/D conversion. It has all the inherent advantages of the voltage–to–frequency conversion tech-
nique. The output is a series of constant duration pulses. The frequency of the pulses is proportional
to the applied input voltage. This converter is designed for use in a wide range of data conversion
and remote sensing applications.
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, V+
8V to 22V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Sink Current, ISINK
20mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation, PD
500mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage, Vi
–0.2V to V+(V)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, Topr
–20
° to +75°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, Tstg
–40
° to +125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (V+ = +15V, TA = +25°C unless otherwise specified)
Parameter
Test Conditions
Min
Typ
Max
Unit
Supply Current
8V < V+ < 15V
2.0
3.5
6.0
mA
15V < V+ < 22V
2.0
4.5
7.5
mA
Conversion Accuracy Scale Factor
VIN = 10V, RS = 14kΩ
0.9
1.0
1.1
kHz/V
Drift with Temperature
VIN = 10V
±100
ppM/
°C
Drift with V+
VIN = 1V, 8V < V+ < 18V
0.2
1.0
%/V
Input Comparator Offset Voltage
5
10
mV
Offset Current
±50
±100
nA
Input Bias Current
–100
–300
nA
Common Mode Range
Note 1
0 to V+ –3
0 to V+ –2
V
One–Shot Threshold Voltage
Pin5
0.63
0.66
0.70
x V+
Input Bias Current
Pin5
–100
–500
nA
Reset VSAT
Pin5, I = 2.2mA
0.15
0.50
V
Note 1 Input Common Mode Range includes GND.


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