AMC1311

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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 Catalog Operating temperature range (C) -40 to 125, -55 to 125 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

  • 2-V, high-impedance input voltage range optimized for isolated voltage measurement
  • Low offset error and drift:
    • AMC1311B: ±1.5 mV (max), ±10 µV/°C (max)
    • AMC1311: ±9.9 mV (max), ±20 µV/°C (typ)
  • Fixed gain: 1
  • Very low gain error and drift:
    • AMC1311B: ±0.2% (max), ±40 ppm/°C (max)
    • AMC1311: ±1% (max), ±30 ppm/°C (typ)
  • Low nonlinearity and drift: 0.01%, 1 ppm/°C (typ)
  • 3.3-V operation on high-side (AMC1311B)
  • 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 and IEC 62368-1 end equipment standard

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Description

The AMC1311 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 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 is offered with two performance grade options: the AMC1311B is specified over the extended industrial temperature range of –55°C to +125°C, and the AMC1311 for operation at –40°C to +125°C.

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Technical documentation

Design & development

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Hardware development

EVALUATION BOARD Download
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 MODEL Download
SBAM366A.TSC (88 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBAM367A.ZIP (14 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBAM385A.ZIP (5 KB) - PSpice Model
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
SBAR013.ZIP (226 KB)

Reference designs

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CAD/CAE symbols

Package Pins Download
SOIC (DWV) 8 View options

Ordering & quality

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