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PDF NTE2055 Data sheet ( Hoja de datos )
| Número de pieza | NTE2055 | |
| Descripción | Integrated Circuit CMOS / 3 1/2 Digit A/D Converter | |
| Fabricantes | NTE | |
| Logotipo |  |
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NTE2055
Integrated Circuit
CMOS, 3 1/2 Digit A/D Converter
Description:
The NTE2055 is a high performance, low power, 3 1/2 digit A/D converter combining both linear CMOS and
digital CMOS circuits on a single monolithic IC. Available in a 24–Lead DIP type package, this device is de-
signed to minimize use of external components. With two external resistors and two external capacitors, the
system forms a dual slope A/D converter with automatic zero correction and automatic polarity.
The NTE2055 is ratiometric and may be used over a full–scale range from 1.999V to 199.9mV. Systems using
this device may operate over a wide range of power supply voltages for ease of use with batteries, or with stan-
dard 5V supplies. The output drive conforms with standard B–Series CMOS specifications and can drive a
low–power Schottky TTL load.
The high impedance MOS inputs allow applications in current and resistance meters as well as voltmeters.
In addition to DVM/DPM applications, the NTE2055 finds use in digital thermometers, digital scales, remote
A/D, A/D control systems, and in MPU systems.
Features:
D Accuracy: ±0.05% of Reading ±1 Count
D Two Voltage Ranges: 1.999V and 199.9mV
D Up to 25 Conversions /s
D Zin > 100MΩ
D Auto–Polarity and Auto–Zero
D Single Positive Voltage Reference
D Standard B–Series CMOS Outputs: Drives One Low Power Schottky Load
D Uses On–Chip System Clock, or External Clock
D Wide Supply Range: e.g., ±4.5V to ±8.0V
D Overrange and Underrange Signals Available
D Operates in Auto Ranging Circuits
D Operates with LED and LCD Displays
D Low External Component Count
D Chip Complexity: 1326 FETs
Absolute Maximum Ratings:
DC Supply Voltage, VDD to VEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5V to +18V
Voltage, Ant Pin, Referenced to VEE, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5V to VDD+0.5V
DC Input Current, Per Pin, Iin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA
Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +85°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Note
1. This device contains circuitry to protect the inputs against damage due to high static voltages or electric
fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher
than maximum rated voltages to this high impedance circuit. For proper operation it is recommended that
Vin and Vout be constrained to the range VEE ≤ (Vin or Vout) ≤ VDD.
Recommended Operating Conditions: (VSS = 0 or VEE)
DC Supply Voltage
VDD to Analog GND, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0 to 8.0V
VEE to Analog GND, VEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –2.8 to –8.0V
Clock Frequency, fClk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 to 400kHz
Zero Offset Correction Capacitor, Co . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 ±20%µF
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet NTE2055.PDF ] | |
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