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OPA1679QRUMRQ1

Audio Amplifier 4 Circuit Rail-to-Rail 16-WQFN (4x4)

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

OPA1679QRUMRQ1
Datasheet:

OPA1679QRUMRQ1 Datasheet (PDF)
Series:

Automotive, AEC-Q100
Amplifier Type:

Audio
Number of Circuits:

4
Output Type:

Rail-to-Rail
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OPA1679QRUMRQ1 General Description

The dual-channel OPA1678-Q1 and quad-channel OPA1679-Q1 (OPA167x-Q1) operational amplifiers offer higher system-level performance over legacy op amps commonly used in audio circuitry. The OPA167x-Q1 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-Q1 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-Q1 to be used in many audio circuits.

The OPA167x-Q1 temperature ranges are specified from –40°C to +125°C.

Key Features

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Low noise: 4.5 nV/√Hz at 1 kHz
Low distortion: 0.0001% at 1 kHz
High open-loop gain: 114 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)
Rail-to-rail output
Wide supply range:
- ±2.25 V to ±18 V, or 4.5 V to 36 V
Available packages:
- Dual: SOIC-8 (Preview)
- Quad: Small QFN-16

Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersInstrumentation, OP Amps, Buffer Amps	Series	Automotive, AEC-Q100
Amplifier Type	Audio	Number of Circuits	4
Output Type	Rail-to-Rail	Slew Rate	9V/µs
Gain Bandwidth Product	16 MHz	-3db Bandwidth	20 kHz
Current - Input Bias	10 pA	Voltage - Input Offset	500 µV
Current - Supply	2mA (x4 Channels)	Current - Output / Channel	50 mA
Voltage - Supply Span (Min)	4.5 V	Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 125°C (TA)	Mounting Type	Surface Mount
Base Product Number	OPA1679