The OPA1641-Q1 (single) and OPA1642-Q1 (dual) series are JFET-input, ultra-low distortion, low-noise operational amplifiers (op amps) fully specified for audio applications.The rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Features include 5.1-nV/√Hz noise, low total harmonic distortion + noise (THD+N) (0.00005%), a low input bias current of 2 pA, and low quiescent current of 1.8 mA per channel. These devices operate over a very wide supply voltage range of ±2.25 V to ±18 V. The OPA164x-Q1 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Low Noise: 5.1 nV/√Hz at 1 kHz
- Ultra-low Distortion: 0.00005% at 1 kHz
- High Slew Rate: 20 V/µs
- Unity Gain Stable
- No Phase Reversal
- Low Quiescent Current:
1.8 mA per Channel - Rail-to-Rail Output
- Wide Supply Range: ±2.25 V to ±18 V
- Single, Dual, and Quad Versions Available
| Number of channels | 1 |
| Vos (offset voltage at 25°C) (max) (mV) | 3.5 |
| GBW (typ) (MHz) | 11 |
| Features | Burr-Brown™ Audio, Premium Sound |
| Slew rate (typ) (V/µs) | 20 |
| Rail-to-rail | Out |
| Iq per channel (typ) (mA) | 1.8 |
| Vn at 1 kHz (typ) (nV√Hz) | 5.1 |
| CMRR (typ) (dB) | 126 |
| Rating | Automotive |
| Operating temperature range (°C) | -40 to 125 |
| Input bias current (max) (pA) | 20 |
| Architecture | FET |
| Input common mode headroom (to negative supply) (typ) (V) | -0.1 |
| Input common mode headroom (to positive supply) (typ) (V) | -3.5 |
| THD + N at 1 kHz (typ) (%) | 0.00005 |