Overview
The THS4531IRUNR is a low-power, fully-differential operational amplifier produced by Texas Instruments. This device is designed for low-power data acquisition systems and high-density applications where power consumption and dissipation are critical. It features an ultra-low power consumption of 250 µA and a power-down mode of 0.5 µA (typical), making it ideal for applications requiring minimal power usage. The THS4531IRUNR operates over an extended industrial temperature range from –40°C to +125°C and is available in a 10-pin WQFN (RUN) package.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V |
| Quiescent Current | 250 µA |
| Power-Down Mode Current | 0.5 µA (typical) |
| Bandwidth | 36 MHz |
| Slew Rate | 200 V/µs |
| Total Harmonic Distortion (THD) | –120 dBc at 1 kHz (1 V RMS, RL= 2 kΩ) |
| Input Voltage Noise | 10 nV/√Hz (f = 1 kHz) |
| Offset Voltage Drift | ±4 µV/°C (–40°C to +125°C) |
| Open-Loop Gain | 114 dB |
| Output Type | Rail-to-Rail Output (RRO) |
| Input Type | Negative Rail Input (NRI) |
| Package | 10-pin WQFN (RUN) |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- Ultra-low power consumption: 250 µA and 0.5 µA in power-down mode.
- Fully-differential architecture with rail-to-rail output (RRO) and negative rail input (NRI).
- High bandwidth: 36 MHz and high slew rate: 200 V/µs.
- Low total harmonic distortion (THD): –120 dBc at 1 kHz (1 V RMS, RL= 2 kΩ).
- Low input voltage noise: 10 nV/√Hz (f = 1 kHz).
- High DC accuracy with low offset voltage drift: ±4 µV/°C (–40°C to +125°C) and high open-loop gain: 114 dB.
- Accurate output common-mode control for dc coupling with ADCs.
Applications
The THS4531IRUNR is suitable for various applications, including:
- Low-power data acquisition systems.[
- High-density applications where power consumption and dissipation are critical.[
- Differential signal conditioning in general-purpose applications.[
- Interface from single-ended ground-referenced signal sources to successive-approximation registers (SARs) and delta-sigma (ΔΣ) ADCs using single-supply 2.5 V to 5 V power.[
Q & A
- What is the typical quiescent current of the THS4531IRUNR?
The typical quiescent current is 250 µA.[ - What is the power-down mode current of the THS4531IRUNR?
The power-down mode current is 0.5 µA (typical).[ - What is the bandwidth of the THS4531IRUNR?
The bandwidth is 36 MHz.[ - What is the slew rate of the THS4531IRUNR?
The slew rate is 200 V/µs.[ - What is the total harmonic distortion (THD) of the THS4531IRUNR?
The THD is –120 dBc at 1 kHz (1 V RMS, RL= 2 kΩ).[ - What is the input voltage noise of the THS4531IRUNR?
The input voltage noise is 10 nV/√Hz (f = 1 kHz).[ - What is the offset voltage drift of the THS4531IRUNR?
The offset voltage drift is ±4 µV/°C (–40°C to +125°C).[ - What is the open-loop gain of the THS4531IRUNR?
The open-loop gain is 114 dB.[ - What type of output does the THS4531IRUNR have?
The THS4531IRUNR has a rail-to-rail output (RRO).[ - What is the operating temperature range of the THS4531IRUNR?
The operating temperature range is –40°C to +125°C.[
