OPA164x-Q1 SoundPlus™ JFET-Input, Automotive-Grade, Audio Operational Amplifiers
1 Features
- 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
2 Applications
- Automotive
- HEV and EV Power Train
- Advanced Driver Assist (ADAS)
- Infotainment Systems
- In-Cabin Microphones
3 Description
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.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| OPA1641-Q1 | SOIC (8) | 4.90 mm × 3.90 mm |
| VSSOP (8) | 3.00 mm × 3.00 mm | |
| OPA1642-Q1 | SOIC (8) | 4.90 mm × 3.90 mm |
| VSSOP (8) | 3.00 mm × 3.00 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
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Simplified Internal Schematic
Extremely Stable Input Capacitance
4 Revision History
Changes from * Revision (June 2017) to A Revision
- Added separate AOL values for OPA1642-Q1Go
5 Pin Configuration and Functions
Pin Functions: OPA1641-Q1
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| –IN | 2 | I | Inverting input |
| +IN | 3 | I | Noninverting input |
| NC | 1, 5, 8 | — | No connection |
| OUT | 6 | O | Output |
| V– | 4 | — | Negative (lowest) power supply |
| V+ | 7 | — | Positive (highest) power supply |
Pin Functions: OPA1642-Q1
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| –IN A | 2 | I | Inverting input, channel A |
| –IN B | 6 | I | Inverting input, channel B |
| +IN A | 3 | I | Noninverting input, channel A |
| +IN B | 5 | I | Noninverting input, channel B |
| OUT A | 1 | O | Output, channel A |
| OUT B | 7 | O | Output, channel B |
| V– | 4 | — | Negative (lowest) power supply |
| V+ | 8 | — | Positive (highest) power supply |