AMC1311-Q1

ACTIVE

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

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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

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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.

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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARD 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 TOOL 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
  • (...)
CALCULATION TOOL Download
SBAR013A.ZIP (290 KB)

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
ASIL D safety concept-assessed high-speed traction, bi-directional DC/DC conversion reference design
TIDM-02009 This reference design demonstrates control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU. The traction control uses a software-based resolver to digital converter (RDC) driving the motor to a high speed up to 20,000 RPM. The DC-DC (...)
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

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