Datasheet > TPS2661

TPS2661

更新时间： 2024-11-05 02:50:27

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
33页	1515K
描述
TPS2661x: 50 V, Universal 4-20 mA, Â±20-mA Current Loop Protector with Input/Output Miswiring Protection

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TPS2661 数据手册

TPS2661

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SLVSFE3 – NOVEMBER 2020

TPS2661x: 50 V, Universal 4-20 mA, ±20-mA Current Loop Protector with Input/Output

Miswiring Protection

1 Features

3 Description

•

±50-V operating voltage, ±55-V absolute maximum

Integrated fixed bipolar 30-mA (±15%) current limit

Allows 2x current limit at startup

50% space savings compared to a typical discrete

protection circuit

The TPS2661x is a compact, feature rich, fully

integrated current loop protector suitable for analog

inputs, analog outputs, sensor transmitters, HART

Inputs and UART IO protection. It provides Universal

Input protection for ±20 mA, 0 to 20 mA, 4-20 mA.

Low R_ONof 7.5 Ω minimizes drop in the current loop,

thereby extending operating range and supporting

operation even with lower voltage power supplies.

The device can withstand and protect the loads from

positive and negative supply voltages up to ±50 V.

The MODE pin allows flexibility to enable 2x current

limit through the device to enable proper startup of

two wire transmitters. Device is capable of operating

from an external bipolar supply as low as ± 2.5 V to

±20 V. It can also be powered from unipolar supplies

as low as 3 V to 30 V. In case the external bias supply

(+Vs) is down, the device intelligently switches from

external supply to loop supply in TPS26610 variant,

thereby not breaking the loop in redundant systems.

•

Low R-on: 7.5-Ω typical

Low Iq (< 100 nA) - current drawn from loop when

powered from external supply

Protection against mis-wiring conditions on IN and

OUT

Protection during signal line surge IEC61000-4-5

(with external TVS)

Criteria-A EFT (IEC61000-4-4) immunity (with

external TVS)

Supports loop testing without supply (TPS26610

only)

HART compliant

Enable control

SGOOD for system health monitoring

Thermal shutdown

•

The device also protects the system from output side

miswiring in Analog Outputs and sensor transmitters

by turning off the current path when potential on OUT

pin exceeds the supply rails. The internal robust

protection control blocks along with the 50-V rating of

the TPS2661x helps to protect against surge

(IEC61000-4-5) and EFT (IEC61000-4-4) transients

for signal lines. The device greatly reduces system

footprint by its 2.9 mm × 1.6 mm 8-pin SOT-23

package.

2 Applications

•

Factory automation and control – PLCs- Analog

Input / Output Module

Motor drives control

HART Inputs

HVAC Controllers

•

UART IO Protection

Thermal Controller

Device Information ⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS26610

TPS26611

TPS26612

SOT-23 (8)

2.9 mm × 1.6 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

ANALOG INPUT MODULE

+Vs

SGOOD

MODE

TPS26610

I+

OUT

+Vs

GND

-Vs

4 to 20 mA

20 mA

ADC

I_LOOP

Current Inputs

Precision

Burden

Resistor

-Vs

GND

I-

no. of channels

Figure 3-1. Miswiring Protection on Input from

Field Supply

Typical Circuit Schematic

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

without notice.

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与TPS2661相关器件

型号	品牌	获取价格	描述	数据表
TPS2661_V01	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26610	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26610DDFR	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26611	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26611DDFR	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26612	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26612DDFR	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26613	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26613DDFR	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA
TPS26614	TI	获取价格	TPS2661x: 50-V, Universal 4â20 mA, Â±20-mA

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