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OPA1656 Datasheet Preview

OPA1656 Datasheet

Audio Operational Amplifier

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OPA1656
SBOS901A – MARCH 2019 – REVISED JULY 2019
OPA1656 Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-BrownTM
Audio Operational Amplifier
1 Features
1 Ultra-low noise:
– Voltage noise: 2.9 nV/Hz at 10 kHz
– Current noise: 6 fA/Hz at 1 kHz
• Low distortion:
– 0.000029% (–131 dB) at 1 kHz
– 0.000035% (–129 dB) at 20 kHz
• High open-loop gain: 150 dB
• High output current: 100 mA
• Low input bias current: 10 pA
• Slew rate: 24 V/μs
• Gain bandwidth product: 53 MHz
• Rail-to-rail output
• Wide supply range:
±2.25 V to ±18 V or 4.5 V to 36 V
• Quiescent current: 3.9 mA per channel
2 Applications
• Soundbar
• Turntable
• DJ controllers, mixers, and other DJ equipment
• Professional audio mixer or control surface
• High-fidelity D/A converter
• Guitar effects pedal
• Guitar amplifier and other music instrument
amplifier
• Professional microphones and wireless systems
• Headset and headphones
• Vibration analysis
Active Baxandall Tone Control
Pad
Bass
Input
±
+ 1/2
OPA1656
Treble
+15
±
Output
+ 1/2
OPA1656
-15
3 Description
The OPA1656 is a Burr-Brown™ operational amplifier
(op amp) designed specifically for audio and industrial
applications, where maintaining signal fidelity is
crucial. The FET-input architecture achieves a low
2.9-nV/Hz voltage noise density and 6-fA/Hz
current noise density, allowing for very low noise
performance in a wide variety of circuits. The high
bandwidth and high open-loop-gain design of the
OPA1656 delivers a low distortion of 0.000035%
(–129 dB) at 20 kHz, and improves audio signal
fidelity across the full audio bandwidth. This device
also features excellent output current drive capability,
offering rail-to-rail output swing to within 250 mV of
the power supplies with a 2-kΩ load, and can deliver
100 mA of output current.
The OPA1656 operates over a very wide supply
range of ±2.25 V to ±18 V or (4.5 V to 36 V) on 3.9
mA of supply current to accommodate the power
supply constraints of many types of audio products.
The temperature range is specified from –40°C to
+125°C. The device is offered in an 8-pin SOIC
package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
OPA1656
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Ultra-Low Input Voltage Noise
100
10
1
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
C020
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

OPA1656 Datasheet Preview

OPA1656 Datasheet

Audio Operational Amplifier

No Preview Available !

OPA1656
SBOS901A – MARCH 2019 – REVISED JULY 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 14
7.1 Overview ................................................................. 14
7.2 Functional Block Diagram ....................................... 14
7.3 Feature Description................................................. 14
7.4 Device Functional Modes........................................ 17
8 Application and Implementation ........................ 18
8.1 Application Information............................................ 18
8.2 Typical Applications ................................................ 19
9 Power Supply Recommendations...................... 25
10 Layout................................................................... 25
10.1 Layout Guidelines ................................................. 25
10.2 Layout Example .................................................... 26
11 Device and Documentation Support ................. 27
11.1 Device Support...................................................... 27
11.2 Documentation Support ........................................ 28
11.3 Receiving Notification of Documentation Updates 28
11.4 Community Resource............................................ 28
11.5 Trademarks ........................................................... 28
11.6 Electrostatic Discharge Caution ............................ 28
11.7 Glossary ................................................................ 28
12 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
Changes from Original (March 2019) to Revision A
Page
• Changed device status from advanced information (preview) to production data (active) .................................................... 1
2 Submit Documentation Feedback
Product Folder Links: OPA1656
Copyright © 2019, Texas Instruments Incorporated


Part Number OPA1656
Description Audio Operational Amplifier
Maker etcTI
Total Page 30 Pages
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