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AMC1211AQDWVRQ1

2-V input, precision voltage sensing basic isolated amplifier

Manufacturer:

TI
Mfr.Part #:

AMC1211AQDWVRQ1
Datasheet:

AMC1211AQDWVRQ1 Datasheet (PDF)
Device type:

Voltage sensing
Peak-to-peak input voltage range (V):

2
Isolation rating:

Basic
Withstand isolation voltage (VISO) (Vrms):

3000
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AMC1211AQDWVRQ1 General Description

The AMC1211-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide basic galvanic isolation of up to 3 kV_RMS according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage of up to 1000 V_RMS.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.

The high-impedance input of the AMC1211-Q1 is optimized for connection to high-impedance resistive dividers or any other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1211-Q1 is offered in a wide-body 8-pin SOIC package and is AEC-Q100 qualified for automotive applications and supports the temperature range from –40°C to +125°C.

Key Features

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
2-V, high-impedance input voltage range optimized for isolated voltage measurement
Fixed gain: 1
Low DC errors:
- Offset error: ±1.5 mV (maximum)
- Offset drift: ±10 µV/°C (maximum)
- Gain error: ±0.2% (maximum)
- Gain drift: ±40 ppm/°C (maximum)
- Nonlinearity: 0.04% (maximum)
3.3-V operation on high-side
High CMTI: 30 kV/µs (minimum)
Missing high-side supply indication
Safety-related certifications:
- 4250-V_PK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 3000-V_RMS isolation for 1 minute per UL1577

Specifications

Device type	Voltage sensing	Peak-to-peak input voltage range (V)	2
Isolation rating	Basic	Withstand isolation voltage (VISO) (Vrms)	3000
Working isolation voltage (VIOWM) (Vrms)	1000	Transient isolation voltage (VIOTM) (VPK)	4250
CMTI (min) (kV/µs)	30	Creepage (min) (mm)	8.5
Clearance (min) (mm)	8.5	Input offset (±) (max) (V)	0.0015
Input offset drift (±) (typ) (V/°C)	0.000003	Rating	Automotive
Operating temperature range (°C)	-40 to 125	TI functional safety category	Functional Safety-Capable

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Ratings and Reviews

A**a 04/28/2024

Couldn't be happier with Avaq! Their EPM3032ATC44-10N components surpassed my expectations in terms of quality. Definitely my go-to distributor from now on.

S**a 05/17/2021

Came quickly, the number corresponds

B**n 08/07/2020

It was cut from somewhere and legs a bit short, but legs 3-5 resistance is about 3.5 kohm.Somewhere cut, so the legs are short, but the resistance of the legs 3-5 about 3.5 kΩ.

A**n 02/16/2020

All is ok, thank you.