AD8541

PRODUCTION

CMOS Rail-to-Rail General-Purpose Amplifiers

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Overview

  • Single-supply operation: 2.7 V to 5.5 V
  • Low supply current: 45 μA/amplifier
  • Wide bandwidth: 1 MHz
  • No phase reversal
  • Low input currents: 4 pA
  • Unity gain stable
  • Rail-to-rail input and output
  • AEC-Q100 qualified for automotive applications

The AD8541/AD8542/AD8544 are single, dual, and quad rail-to-rail input and output single-supply amplifiers featuring very low supply current and 1 MHz bandwidth. All are guaranteed to operate from a 2.7 V single supply as well as a 5 V supply. These parts provide 1 MHz bandwidth at a low current consumption of 45 μA per amplifier.

Very low input bias currents enable the AD8541/AD8542/AD8544 to be used for integrators, photodiode amplifiers, piezoelectric sensors, and other applications with high source impedance. The supply current is only 45 μA per amplifier, ideal for battery operation.

Rail-to-rail inputs and outputs are useful to designers buffering ASICs in single-supply systems. The AD8541/AD8542/AD8544 are optimized to maintain high gains at lower supply voltages, making them useful for active filters and gain stages.

The AD8541/AD8542/AD8544 are specified over the extended industrial temperature range (–40°C to +125°C). The AD8541 is available in 8-lead SOIC, 5-lead SC70, and 5-lead SOT-23 packages. The AD8542 is available in 8-lead SOIC, 8-lead MSOP, and 8-lead TSSOP surface-mount packages. The AD8544 is available in 14-lead narrow SOIC and 14-lead TSSOP surface-mount packages. All MSOP, SC70, and SOT versions are available in tape and reel only.

Applications
  • ASIC input or output amplifiers
  • Sensor interfaces
  • Piezoelectric transducer amplifiers
  • Medical instrumentations
  • Mobile communications
  • Audio outputs
  • Portable systems

AD8541
CMOS Rail-to-Rail General-Purpose Amplifiers
AD8541-fbl
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Software Resources

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Tools & Simulations

LTspice


Models for the following parts are available in LTspice:

  • AD8541

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

Open Tool

Signal Chain Designer

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

SPICE Model 1

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

EVAL-OPAMP-1

EVAL-OPAMP-1 Evaluation Board

Product Details

The Universal Precision Op Amp Evaluation Boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs Compliant. See references below on what board to order by lead count and package.

  • EVAL-PRAOPAMP-1KSZ (Single 5-Lead SC70) KS-5
  • EVAL-PRAOPAMP-1RJZ (Single 5-Lead SOT 23) RJ-5
  • EVAL-PRAOPAMP-1RMZ (Single 8-Lead MSOP) RM-8
  • EVAL-PRAOPAMP-1RZ (Single 8-Lead SOIC) R-8

EVAL-OPAMP-1
EVAL-OPAMP-1 Evaluation Board

Reference Designs

Ultrasonic Distance Sensor
CN0343 Circuits from the lab

Ultrasonic Distance Measurement

Features and Benefits

  • Self-Contained Ultrasonic Distance Measurement
  • 50cm to 10m range
  • 2cm resolution
  • Small PCB Footprint
Complete ADXL1002 with IEPE Compatible Circuit Diagram
CN0532 Circuits from the lab

IEPE-Compatible Interface for Wideband MEMS Accelerometer Sensors 

Features and Benefits

  • Industry Standard IEPE Interface
  • Wideband MEMs Accelerometer
  • Direct Replacement for Piezo Sensors

Part Used


Resources


Videos

  • lazy blur
    VIDEO · 2021-01-29 02:43
    CN0549 - CbM Development Platform
Figure 1. CN0585 Simplified Block Diagram
CN0585 Circuits from the lab

Quad Channel, Low Latency, Data Acquisition and Signal Generation Module

Features and Benefits

  • 4 Analog Input Channels with Configurable Voltage Ranges
  • 4 Analog Output Channels with Configurable Voltage Ranges
  • 200 ns Latency between ADC Measurement and DAC Settling
  • Analog Front End Interface Connector
  • Modeling and Simulation Compatible with MATLAB and Python
  • FMC Connector Interface to FPGA

Part Used


Resources


Design & Integration Tools


Videos

  • lazy blur
    VIDEO · 2023-04-03 03:08
    Personalized Low Latency Hardware in the Loop (HiL) Solution
  • lazy blur
    VIDEO · 2022-10-31 03:03
    Low Latency Test and Measurement Kit – Hardware in the Loop
CN0343
Ultrasonic Distance Measurement
Ultrasonic Distance Sensor
CN0532
IEPE-Compatible Interface for Wideband MEMS Accelerometer Sensors 
Complete ADXL1002 with IEPE Compatible Circuit Diagram
CN0585
Quad Channel, Low Latency, Data Acquisition and Signal Generation Module
Figure 1. CN0585 Simplified Block Diagram
EVAL-CN0585-FMCZ Angle View
EVAL-CN0585-FMCZ Bottom View
EVAL-CN0585-FMCZ Top View

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