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OPA1678

Texas Instruments
Part Number OPA1678
Manufacturer Texas Instruments
Description Low-Distortion Audio Operational Amplifiers
Published Oct 10, 2019
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community OPA1678, OPA1679 SBOS855C – FEBRU...
Datasheet PDF File OPA1678 PDF File

OPA1678
OPA1678

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community OPA1678, OPA1679 SBOS855C – FEBRUARY 2017 – REVISED JUNE 2019 OPA167x Low-Distortion Audio Operational Amplifiers 1 Features •1 Low noise: 4.
5 nV/√Hz at 1 kHz • Low distortion: 0.
0001% at 1 kHz • High open-loop gain: 114 dB • High common-mode rejection: 110 dB • Low quiescent current: – 2 mA per channel • Low input bias current: 10 pA (typical) • Slew rate: 9 V/μs • Wide gain bandwidth: 16 MHz (G = 1) • Unity-gain stable • Rail-to-rail output • Wide supply range: – ±2.
25 V to ±18 V, or 4.
5 V to 36 V • Dual-channel and quad-channel versions • Small package sizes: – Dual-channel: SO-8, MSOP-8, SON-8 – Quad-channel: SO-14, TSSOP-14, QFN-16 2 Applications • Analog signal conditioning • Analog and digital mixers • Audio effects pedals • A/V receivers • Car audio systems 3 Description The OPA1678 (dual-channel) and OPA1679 (quadchannel) operational amplifiers offer higher systemlevel performance over legacy op amps commonly used in audio circuitry.
The OPA167x amplifiers achieve a low 4.
5-nV/√Hz noise density and low distortion of 0.
0001% at 1 kHz, which improves audio signal fidelity.
They also offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range.
The OPA1678 and OPA1679 operate over a very wide supply range of ±2.
25 V to ±18 V or (4.
5 V to 36 V) on only 2 mA of supply current to accommodate the power supply constraints of many types of audio products.
These op amps are unitygain stable and have excellent dynamic behavior over a wide range of load conditions allowing them to be used in many audio circuits.
The OPA167x amplifiers use completely independent internal circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.
The OPA167x temperature ranges are specified from –40°C to +85°C.
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOIC (8) 4.
90...


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