OPA1678 Texas instruments

OPA1678

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OPA1678

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Описание

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.

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, 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

Number of channels	2
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	4.5
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	36
GBW (typ) (MHz)	16
Slew rate (typ) (V/µs)	9
Rail-to-rail	Out
Vos (offset voltage at 25°C) (max) (mV)	2
Iq per channel (typ) (mA)	2
Vn at 1 kHz (typ) (nV√Hz)	4.5
Features	Small Size
THD + N at 1 kHz (typ) (%)	0.0001
Rating	Catalog
Operating temperature range (°C)	-40 to 85
Iout (typ) (A)	0.05
Architecture	CMOS
CMRR (typ) (dB)	110