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OPA167x Dual- and Quad-Channel Tool Box Audio Op-Amps
Texas Instruments' low-distortion, low-noise op-amps are ideal for applications such as analog signal conditioning
Texas Instruments' OPA1678 (dual-channel) and OPA1679 (quad-channel) op-amps offer higher system-level performance over legacy op-amps commonly used in audio circuitry. The OPA167x amps achieve a low noise density of 4.5 nV/√Hz and low distortion of 0.0001% at 1 kHz, which improves audio signal fidelity. These devices offer rail-to-rail output swing within 800 mV with a 2 kΩ load which increases headroom and maximizes dynamic range.
The OPA1678 and OPA1679 operate over an ultra-wide supply range of ±2.25 V to ±18 V (4.5 V to 36 V) on 2 mA of supply current to accommodate the power supply constraints of many types of audio products. These op-amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions allowing them to be used in many audio circuits.
The OPA167x amps use completely independent internal circuitry for ultra-low crosstalk and freedom from interactions between channels, even when overdriven or overloaded. The OPA167x offers a temperature range of -40°C to +85°C.
- 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, and SON-8
- Quad-channel: SO-14, TSSOP-14, and QFN-16
- Analog signal conditioning
- Analog and digital mixers
- Audio effects pedals
- A/V receivers
- Car audio systems
OPA167x Tool Box Audio Op-Amps
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | OPA1679IDR | IC OP AMP 4CH 14-SOIC | 473 - Immediate | $1.52 | View Details |
|  | OPA1679IPWR | IC OP AMP 4CH 14-TSSOP | 3368 - Immediate | $1.46 | View Details |
|  | OPA1678IDGKT | IC OP AMP 2CH 8-VSSOP | 0 - Immediate | $1.04 | View Details |
| | OPA1678IDGKR | IC OP AMP 2CH 8-VSSOP | 0 - Immediate | $0.92 | View Details |
|  | OPA1678IDRGR | IC OP AMP 2CH 8-SON | 0 - Immediate | $0.89 | View Details |
| | OPA1678IDRGT | IC OP AMP 2CH 8-SON | 497 - Immediate | $1.04 | View Details |
|  | OPA1679IRUMT | IC OP AMP 4CH 16-WQFN | 1319 - Immediate | $2.09 | View Details |
|  | OPA1678IDR | IC OP AMP 2CH 8-SOIC | 0 - Immediate | $0.92 | View Details |
Breakout Board
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | QFN16-DIP-EVM | BREAKOUT BOARD | 50 - Immediate | $21.79 | View Details |
Evaluation Boards
| Image | Manufacturer Part Number | Description | Amplifier Type | Voltage - Supply, Single/Dual (±) | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|---|
|  | OPAMPEVM-MSOPTSSOP | UNIV EVAL MOD FOR MSOP/TSSOP | Standard (General Purpose) | - | 2 - Immediate | $6.88 | View Details |
|  | OPAMPEVM-SOIC | UNIV EVAL MOD FOR SOP PKG | Standard (General Purpose) | - | 10 - Immediate | $6.88 | View Details |
|  | OPAMPEVM-SOT23 | UNIV EVAL MOD FOR SOT23 PKG | Standard (General Purpose) | - | 6 - Immediate | $6.88 | View Details |
|  | OPAMPEVM-SOT23SHDN | UNIV EVAL MOD FOR SOT23 PKG | Standard (General Purpose) | - | 0 - Immediate | $6.88 | View Details |
|  | OPAMPEVM-PDIP | UNIV EVAL MOD FOR DIP PKG | Standard (General Purpose) | - | 3 - Immediate | $6.88 | View Details |
