AD8508

PRODUCTION

AD8508

20 µA Maximum, RRIO, Zero Input Crossover Distortion Quad Op Amp

PRODUCTION

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1ku List Price Starting From $1.20

Features

PSRR: 100 dB minimum
CMRR: 105 dB typical
Very low supply current: 20 μA per amplifier maximum
1.8 V to 5 V single supply or ±0.9 V to ±2.5 V dual supply
Rail-to-rail input/output
Low noise: 45 nV/√Hz at 1 kHz
2.5 mV offset voltage maximum
Very low input bias current: 1 pA typical

Additional Details

The AD8505/AD8506/AD8508 are single, dual, and quad micro-power amplifiers featuring rail-to-rail input/output swings while operating from a single 1.8 V to 5 V power supply or from dual ±0.9 V to ±2.5 V power supplies. Using a new circuit technology, these amplifiers offer zero input crossover distortion (excellent PSRR and CMRR performance) and low bias current while operating with a supply current of less than 20 μA per amplifier. This amplifier family offers the lowest noise in its power class.

This combination of features makes the AD8505/AD8506/AD8508 amplifiers ideal choices for battery-powered applications because they minimize errors due to power supply voltage variations over the lifetime of the battery and maintain high CMRR even for a rail-to-rail input op amp. Remote battery-powered sensors, handheld instrumentation, consumer equipment, hazard detection (for example, smoke, fire, and gas), and patient monitors can benefit from the features of the AD8505/AD8506/AD8508 amplifiers.

The AD8505/AD8506/AD8508 are specified for both the industrial temperature range of −40°C to +85°C and the extended industrial temperature range of −40°C to +125°C. The AD8505 single ampli-fier is available in a tiny 5-lead SOT-23 package. The AD8506 dual amplifier is available in 8-lead MSOP and 8-ball WLCSP packages. The AD8508 quad amplifier is available in 14-lead TSSOP and 14-ball WLCSP packages. The AD8505/AD8506/AD8508 are members of a growing series of zero crossover distortion op amps offered by Analog Devices, Inc., including the ADA4505-1/ ADA4505-2/ADA4505-4, that operate from a single 1.8 V to 5 V supply or from dual ±0.9 V to ±2.5 V power supplies.

Applications

Pressure and position sensors

Remote security

Bio sensors

IR thermometers

Battery-powered consumer equipment

Hazard detectors

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Ask a Question

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 3

1ku List Price Starting From $1.20

Technical Documents 1

AD8505/AD8506/AD8508: 20 μA Maximum, Rail-to-Rail I/O, Zero Input Crossover Distortion Amplifiers Data Sheet (Rev.F) 05/28/2010

Reference Materials 1

CN0226: Portable Audio Amplifier with Volume Control (Rev.0) 04/27/2017

Design Resources 3

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD8508ACBZ-REEL7	14-Ball WLCSP (1.46mm x 2.96mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8508ARUZ	14-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8508ARUZ-REEL	14-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

AD8508ACBZ-REEL7
Pin/Package Drawing
14-Ball WLCSP (1.46mm x 2.96mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8508ARUZ
Pin/Package Drawing
14-Lead TSSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8508ARUZ-REEL
Pin/Package Drawing
14-Lead TSSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

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PCN

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

AD8508ACBZ-REEL7

PRODUCTION

pdf

PCN11_0175_Form

xls

Material_Report

Qualification Report Summary

xls

Detailed Parts List

Feb 11, 2011

- 10_0005

Halogen Free Material Change for TSSOP Products Assembled at Amkor

AD8508ARUZ

PRODUCTION

AD8508ARUZ-REEL

PRODUCTION

pdf

PCN10_0005_Form

xls

Material_Report

pdf

Reliability Report

Filter by Model

Part Models

Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

AD8508ACBZ-REEL7

PRODUCTION

pdf

PCN11_0175_Form

xls

Material_Report

Qualification Report Summary

xls

Detailed Parts List

Feb 11, 2011

- 10_0005

Halogen Free Material Change for TSSOP Products Assembled at Amkor

AD8508ARUZ

PRODUCTION

AD8508ARUZ-REEL

PRODUCTION

pdf

PCN10_0005_Form

xls

Material_Report

pdf

Reliability Report

EVAL-OPAMP-4

EVAL-OPAMP-4 Evaluation Board

EVAL-OPAMP-4

EVAL-OPAMP-4 Evaluation Board

Buy Now View Details

Product Detail

The Universal Precision Op Amp Evaluation Boards has 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-4RUZ (Quad 14-Lead TSSOP) RU-14
EVAL-PRAOPAMP-4RZ (Quad 14-Lead SOIC) R-14

EVAL-OPAMP-4

EVAL-OPAMP-4 Evaluation Board

LTspice 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Lt Spice

AD8508 - Operational Amplifiers (Op Amps)

1.41 K

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

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

Signal Chain Designer - BETA

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