Datasheet > NSI1311

NSI1311

更新时间： 2024-04-09 19:00:16

品牌	Logo	应用领域
纳芯微 - NOVOSENSE		放大器隔离技术高压隔离放大器
页数	文件大小	规格书
17页	2137K
描述
NSI1311是一款高性能隔离放大器，基于NOVOSENSE电容隔离技术，其输出与输入分离。该器件的单端输入信号范围0.02V至2V。NSI1311的高输入阻抗使其非常适合连接到高压电阻分压器或其

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NSI1311 数据手册

NSi1311

High Reliability Reinforced

Isolated Amplifier

Datasheet (EN) 1.6



System-Level Diagnostic Feature:

VDD1 monitoring

Product Overview

NSI1311 is a high-performance isolated amplifier with

output separated from input based on the NOVOSENSE

capacitive isolation technology. The device has a single-

ended input signal range from 0.02V to 2V. The high input

impedance of NSI1311 makes it highly suitable for

connection to high-voltage resistive dividers or other

voltage signal sources with high output resistance.

The device has a fixed gain of 1 and provides a

differential analog output.

The low offset and gain drift ensure the accuracy over the

entire temperature range. The high common-mode

transient immunity ensures that the device is able to

provide accurate and reliable measurements even in the

presence of high-power switching such as in motor

control applications.



Operation Temperature: -40℃~125℃

RoHS-Compliant Packages:

SOP-8(300mil)

Safety Regulatory Approvals



UL recognition: up to 5000V_rmsfor 1 minute per UL1577

CQC certification per GB4943.1-2011

CSA component notice5AapprovalIEC60950-1standard

DIN VDE V 0884-11:2017-01

Applications



Bus voltage monitoring

The fail-safe function (missing VDD1 detection) simplifies

system-level design and diagnostics.

AC motor controls

Power and solar inverters

Uninterruptible Power Suppliers

Automotive onboard chargers

Key Features



Up to 5000V_rmsInsulation voltage

0.02~2V, High-Impedance Input Voltage Range

Fixed Gain: 1

Device Information

Part Number

Package

Body Size

5.85mm × 7.50mm

Low Offset Error and Drift:

NSI1311-DSWVR

SOP8(300mil)

±1.5mV (Max), -5~30μV/℃ (Max)

Low Gain Error and Drift:

Functional Block Diagrams



VDD1

VDD2

±0.3% (Max), ±45ppm/℃ (Max)

Low Nonlinearity and Drift:

VDD1 detection

Buffer

Reference

Retiming

and 4^th

OUTP

OUTN

Order Active

Low-Pass

Filter

±0.05% (Max) for 0.02V~0.1V VIN

±0.04% (Max) for 0.1V~2V VIN

±1ppm/℃ (Typ)

VIN

Σ-Δ modulator

SHTDN

Oscillator

GND1

GND2



SNR: 82dB (Typ, BW=10kHz), 70dB (Typ, BW=100kHz)

Wide bandwidth: 400kHz (Typ)

High CMTI: 150kV/μs (Typ)

Figure 1. NSi1311 Block Diagram

Page 1

12 3 4 5 6 7...17

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