AMC1311-Q1

ACTIVE

Automotive 2-V input, reinforced isolated amplifier with high CMTI for voltage sensing

Top

Product details

Parameters

Input range (Vp-p) 2 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7000 CMTI (Min) (kV/µs) 15, 75 Input offset (+/-) (Max) (mV) 9.9, 1.5 Input offset drift (+/-) (Typ) (uV/C) 20, 3 Gain error (+/-) (Max) (%) 1, 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 30, 5 Gain non-linearity (+/-) (Max) (%) 0.04 Small signal bandwidth (Typ) (kHz) 220, 275 Rating Automotive Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable open-in-new Find other Isolated amplifiers

Package | Pins | Size

SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Isolated amplifiers

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Low offset error and drift:
    • AMC1311B-Q1: ±1.5 mV (max), ±10 µV/°C (max)
    • AMC1311-Q1: ±9.9 mV (max), ±20 µV/°C (typ)
  • Fixed gain: 1
  • Very low gain error and drift:
    • AMC1311B-Q1: ±0.2% (max), ±40 ppm/°C (max)
    • AMC1311-Q1: ±1% (max), ±30 ppm/°C (typ)
  • Low nonlinearity and drift: 0.01%, 1 ppm/°C (typ)
  • 3.3-V operation on high-side (AMC1311B-Q1)
  • Missing high-side supply indication
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice

All trademarks are the property of their respective owners.

open-in-new Find other Isolated amplifiers

Description

The AMC1311-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 7 kVPEAK according to VDE V 0884-11 and UL1577. Used in conjunction with isolated power supplies, this isolated amplifier separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.

The high-impedance input of the AMC1311-Q1 is optimized for connection to high-voltage resistive dividers or other voltage signal sources with high output resistance. The excellent performance of the device supports accurate, low temperature drift voltage or temperature sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1311-Q1 is offered with two performance grade options: AMC1311-Q1 and AMC1311B-Q1.

open-in-new Find other Isolated amplifiers
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 14
Type Title Date
* Datasheet AMC1311x-Q1 High-Impedance, 2-V Input, Reinforced Isolated Amplifiers datasheet (Rev. B) May 15, 2020
Application notes AMC1311-Q1 Functional Safety FIT Rate, FMD and Pin FMA May 15, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
White papers Comparing isolated amplifiers and isolated modulators (Rev. A) Feb. 28, 2019
More literature Nonoptical Isolating Devices UL 1577 Certificate of Compliance (Rev. B) Nov. 26, 2018
Technical articles Chief Technology Officer Ahmad Bahai discusses isolation in a world of collaboration Oct. 02, 2018
Application notes High-Accuracy Isolated Voltage Measurement in HEV/EV Subsystems Using AMC1311-Q1 Jun. 13, 2018
White papers Understanding failure modes in isolators (Rev. A) May 10, 2018
More literature Optical Isolating Devices UL 1577 Certificate of Compliance Mar. 07, 2018
Technical articles Why capacitive isolation: a vital building block for sensors in smart cities Jan. 16, 2018
Technical articles The top trends in high-voltage power, from isolation to wide-bandgap technologies Dec. 06, 2017
User guides AMC1311EVM User's Guide Nov. 13, 2017
Application notes Interfacing a Differential-Output (Isolated) Amp to a Single-Ended Input ADC Apr. 19, 2017
Selection guides Understanding isolation terminology and relevance May 23, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description

The AMC1311 device is a high-voltage isolation amplifier with a differential output separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 7000 VPEAK.  When used in combination with TLV6001, the (...)

Features
  • Full-featured evaluation board for AMC1311 single-channel isolation amplifier
  • Single-ended output option
  • Screw terminals for easy access to analog inputs and outputs
  • Configurable AVDD and DVDD power supplies

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Bidirectional CLLLC resonant dual active bridge (DAB) reference design for HEV/EV onboard charger
TIDM-02002 — CLLLC resonant DAB with bidirectional power flow capability and soft switching characteristics is an ideal candidate for Hybrid Electric Vehicle/Electric Vehicle (HEV/EV) on-board chargers and energy storage applications. This design illustrates control of this power topology using a C2000&trade (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
SiC/IGBT isolated gate driver reference design with thermal diode and sensing FET
TIDA-020030 — This reference design is an IGBT or SiC isolated gate driver power stage driving a IGBT module with advanced protection features. The design consists of a single phase power stage from a traction inverter supporting high level of safety features. The IGBT module has integrated thermal diode for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
HEV/EV traction inverter power stage with 3 types of IGBT/SiC bias-supply solutions reference design
TIDA-020014 — This reference design presents a traction inverter single-phase power stage with three 12-V car battery inputs, 4.2-W bias supply solutions for hybrid electric vehicle and electric vehicle (HEV/EV) systems. All bias-supply solutions accept a wide input range of 4.5 V to 42 V DC from a 12-V car (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (DWV) 8 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos