Overview
The OPA1671IDCKR, produced by Texas Instruments, is a wide-bandwidth, low-noise, low-distortion audio operational amplifier. This device offers rail-to-rail input and output operation, making it suitable for a wide range of audio and industrial applications. The OPA1671 operates from a supply voltage of 1.7 V to 5.5 V, is unity-gain stable, and features a high gain bandwidth of 13 MHz and a high slew rate of 5 V/µs. Its low voltage noise, current noise, and input capacitance ensure high performance in various applications.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Gain Bandwidth | - | - | 13 | - | MHz |
| Supply Voltage | - | 1.7 | - | 5.5 | V |
| Input Bias Current | - | - | ±10 | - | pA |
| Differential Input Capacitance | - | - | 6 | - | pF |
| Common-Mode Input Capacitance | - | - | 2.5 | - | pF |
| Quiescent Current per Amplifier | IO = 0 mA | 0.94 | 1.3 | - | mA |
| Total Harmonic Distortion + Noise (THD+N) | G = 1, f = 1 kHz, VO = 1 VRMS, VS = 5.5 V | - | 0.00035% | - | % |
| Intermodulation Distortion (IMD) | G = 1, VO = 1 VRMS, VS = 5.5 V, SMPTE/DIN Two-Tone, 4:1, (60 Hz and 7 kHz) | - | 0.00158% | - | % |
| Common-Mode Rejection Ratio (CMRR) | VS = 1.7 V, (V–) < VCM < (V+) – 1.25 V | 60 | 88 | - | dB |
| Open-Loop Voltage Gain (AOL) | (V–) + 50 mV < VO < (V+) – 50 mV, RL = 10 kΩ | 97 | 113 | - | dB |
| Package Options | - | - | SC-70, SOT-23 | - | - |
Key Features
- Rail-to-rail input and output operation
- Low supply-voltage operation: 1.7 V to 5.5 V
- Low input capacitance: Differential (6 pF), Common-mode (2.5 pF)
- Low input-bias current: ±10 pA
- Low power supply current: 940 µA
- High gain bandwidth: 13 MHz
- High slew rate: 5 V/µs
- Low distortion: –109 dB THD+N
- Industry-standard packages: SC-70 and SOT-23
- Operating temperature range: –40°C to +125°C
Applications
- Microphone preamplifier
- Auxiliary line input and output
- Active filter circuit
- Transimpedance amplifier
- Voltage buffer
- Buffering high-fidelity digital-to-analog converters (DACs)
- Sensor modules
Q & A
- What is the operating voltage range of the OPA1671?
The OPA1671 operates from 1.7 V to 5.5 V.
- What is the gain bandwidth of the OPA1671?
The gain bandwidth of the OPA1671 is 13 MHz.
- What are the typical package options for the OPA1671?
The OPA1671 is available in SC-70 and SOT-23 packages.
- What is the input bias current of the OPA1671?
The input bias current of the OPA1671 is typically ±10 pA.
- What is the quiescent current per amplifier for the OPA1671?
The quiescent current per amplifier for the OPA1671 is 0.94 mA to 1.3 mA.
- What is the total harmonic distortion + noise (THD+N) of the OPA1671?
The THD+N of the OPA1671 is 0.00035% at G = 1, f = 1 kHz, VO = 1 VRMS, and VS = 5.5 V.
- What are some common applications of the OPA1671?
The OPA1671 is commonly used in microphone preamplifiers, auxiliary line input and output, active filter circuits, transimpedance amplifiers, and voltage buffers.
- What is the operating temperature range of the OPA1671?
The operating temperature range of the OPA1671 is –40°C to +125°C.
- Does the OPA1671 have rail-to-rail input and output operation?
Yes, the OPA1671 features rail-to-rail input and output operation.
- What is the slew rate of the OPA1671?
The slew rate of the OPA1671 is 5 V/µs.
