1B22AN集成電路（IC）的傳感器檢測(cè)器接口規(guī)格書PDF中文資料

1B22AN屬于集成電路（IC）的傳感器檢測(cè)器接口。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的1B22AN傳感器和檢測(cè)器接口該系列產(chǎn)品可執(zhí)行信號(hào)調(diào)節(jié)、數(shù)據(jù)轉(zhuǎn)換、激勵(lì)生成和/或各種將傳感器或變送器機(jī)構(gòu)連接到主機(jī)設(shè)備所需的其他功能。示例包括用于 CCD 圖像傳感器的控制器、用于 4-20 mA 接口和類似應(yīng)用的電流變送器、超聲變送器前端、惠斯通電橋接口等。

GENERAL DESCRIPTION

The 1B22 is an isolated voltage-to-current converter that incorporates transformer isolation to achieve high performance and automated surface mount manufacturing for low cost and increased reliability. Designed for industrial applications, it is especially suited for harsh environments with extremely high common-mode interference. With programmable inputs and outputs, the 1B22 provides an unbeatable combination of versatility and performance in a compact plastic package.

Functionally, the V/I converter consists of four basic sections: input conditioning, modulator/demodulator, isolated loop supply and current source (Figure 1). The 1B22 is pin programmable for 0 V to +5 V or 0 V to +10 V inputs and 0 to 20 mA or 4 to 20 mA outputs using an internal resistor network. It can also be set by an external resistor to accept 0 V to +1 V to 0 V to +10 V inputs. Transformer coupling provides 1500 V rms galvanic isolation between the inputs and the current loop. Nonlinearity is an excellent ±0.05 max.

FEATURES

Internal Isolated Loop Supply Drives 1000 Ω Load

Pin Programmable Inputs: 0 V to +5 V or 0 V to +10 V

Pin Programmable Outputs: 4 to 20 mA or 0 to 20 mA

High CMV Isolation: 1500 V RMS

Normal-Mode Output Protection: 240 V RMS

High Accuracy

Low Offset Tempco: ±300 nA/°C

Low Gain Tempco: ±50 ppm/°C

Low Nonlinearity: ±0.02

High CMR: 90 dB min

Small Package: 1.0 x 2.10 x 0.35

Meets IEEE STD 472: CMV Transient Protection (SWC)

APPLICATIONS

Multichannel Process Control

D/A Converter—Current Loop Interface

Analog Transmitters and Controllers

Remote Data Acquisition Systems