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OPA1677DBVT Datasheet(PDF) 1 Page - Texas Instruments |
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OPA1677DBVT Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 52 page  OPA167x Low-Distortion Audio Operational Amplifiers 1 Features • 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 • Single, dual, and quad-channel versions • Available packages: – Single: SOIC-8 (preview), SOT-23 – Dual: SOIC-8, small SON-8, VSSOP-8 – Quad: Small QFN-16, SO-14, TSSOP-14 • Temperature range: –40°C to +85°C 2 Applications • Professional microphones and wireless systems • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Automotive external amplifier 3 Description The single-channel OPA1677, dual-channel OPA1678, and quad-channel OPA1679 (OPA167x) op amps offer higher system-level 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. These devices also offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. To accommodate the power-supply constraints of many types of audio products, the OPA167x 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. These op amps are unity-gain stable and have excellent dynamic behavior over a wide range of load conditions, allowing the OPA167x 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. Device Information PART NUMBER PACKAGE(1) BODY SIZE (NOM) OPA1677 SOIC (8) - Preview 4.90 mm × 3.91 mm SOT-23 (5) 2.90 mm × 1.60 mm OPA1678 SOIC (8) 4.90 mm × 3.91 mm VSSOP (8) 3.00 mm × 3.00 mm SON (8) 3.00 mm × 3.00 mm OPA1679 SOIC (14) 8.65 mm × 3.91 mm TSSOP (14) 5.00 mm × 4.40 mm QFN (16) 4.00 mm × 4.00 mm (1) For all available packages, see the package option addendum at the end of the data sheet. V BIAS1 Class AB Control Circuitry V BIAS2 V + IN V+ V V IN V O Tail Current Simplified Internal Schematic -140 -120 -100 -80 -60 0.00001 0.0001 0.001 0.01 0.1 10 100 1k 10k Frequency (Hz) Gain = 10 V/V Gain = 1 V/V Gain = -1 V/V C002 THD+N vs Frequency (2-kΩ Load) OPA1677, OPA1678, OPA1679 SBOS855D – JANUARY 2017 – REVISED DECEMBER 2021 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. |
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