Datasheet > 暂无类别数据> NTE2055

NTE2055

更新时间： 2024-11-05 22:54:19

品牌	Logo	应用领域
NTE		转换器
页数	文件大小	规格书
4页	33K
描述
Integrated Circuit CMOS, 3 1/2 Digit A/D Converter

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NTE2055 数据手册

NTE2055

Integrated Circuit

CMOS, 3 ¹/₂Digit A/D Converter

Description:

The NTE2055 is a high performance, low power, 3 ¹/₂digit 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 Z_in> 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, V_DDto V_EE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5V to +18V

Voltage, Ant Pin, Referenced to V_EE, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5V to V_DD+0.5V

DC Input Current, Per Pin, I_in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA

Operating Temperature Range, T_A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +85°C

Storage Temperature Range, T_stg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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

V_inand V_outbe constrained to the range V_EE≤ (V_inor V_out) ≤ V_DD.

Recommended Operating Conditions: (V_SS= 0 or V_EE)

DC Supply Voltage

V_DDto Analog GND, V_DD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0 to 8.0V

V_EEto Analog GND, V_EE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –2.8 to –8.0V

Clock Frequency, f_Clk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 to 400kHz

Zero Offset Correction Capacitor, C_o. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 ±20%µF

12 3 4

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与NTE2055相关器件

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