Datasheet > NSI1305M25

NSI1305M25

更新时间： 2024-04-09 18:58:47

品牌	Logo	应用领域
纳芯微 - NOVOSENSE		隔离技术
页数	文件大小	规格书
28页	3059K
描述
NSI1305是一款高性能Σ-Δ调制器，基于NOVOSENSE电容隔离技术，其输出与输入分离。该器件的线性差分输入信号范围为±50mV(满量程±64mV)或±250mV范围(满量程±320mV)。

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NSI1305M25 数据手册

NSi1305

High Reliability Reinforced

Isolated Sigma-Delta Modulator

Datasheet (EN) 1.1



Input common-mode overvoltage detection

Product Overview



Operation Temperature: -40℃~125℃

The NSI1305 is a high performance Σ-Δ modulator with

output separated from input based on the NOVOSENSE

capacitive isolation technology. The device has a linear

differential input signal range of ±50mV (±64mV full-scale)

or ±250mV (±320mV full-scale). The differential input is

ideally suited to shunt resistor-based current sensing in

high voltage applications where isolation is required.

The analog input is amplified and continuously sampled

by a second-order Σ-Δ modulator and converted to a

high speed, single bit data stream. The output data is

synchronous to the external clock with a frequency range

from 5MHz to 21MHz. By using an appropriate digital

filter (such as sinc3 filter) to decimate the bitstream, the

device can achieve 16 bits resolution and an

86dB/82.5dB signal to noise ratio (SNR) at 78.125kSPS

with a 20MHz master clock.

RoHS-Compliant Packages:



SOP8(300mil)

SOP16(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



Shunt current monitoring

AC motor controls

The fail-safe functions including input common-mode

overvoltage detection and missing AVDD detection

simplify system-level design and diagnostics.

Power and solar inverters

Uninterruptible Power Suppliers

Automotive onboard chargers

Key Features

Device Information

Part Number

NSI1305x-DSWVR SOP8(300mil)

NSI1305x-DSWR SOP16(300mil)



Up to 5000V_RMSInsulation Voltage

Clock frequency: 5MHz to 21MHz

±50mV or ±250mV Linear Input Voltage Range

Excellent DC Performance:

Package

Body Size

5.85mm × 7.50mm

10.30mm × 7.50mm



Offset Error: ±50μV or ±100μV (Max)

Offset Drift: -1~1μV/℃ (Max)

Gain Error: ±0.2% (Max)

Functional Block Diagrams

AVDD

DVDD

VDD1 detection

Reference

INP

INN

Gain Drift: ±40ppm/℃ (Max)

Σ-Δ modulator

DOUT

CLKIN



SNR: 82.5dB or 86dB (Typ)

High CMTI: 150kV/μs (Typ)

V_CMdetection

System-Level Diagnostic Features:

AGND

DGND



AVDD monitoring

Figure 1. NSi1305 Block Diagram

Page 1

12 3 4 5 6 7...28

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