Overview
The THS4531AIRUNR is a high-performance, ultra-low-power, fully differential 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 a rail-to-rail output and an input common-mode range below the negative rail, making it ideal for interfacing single-ended ground-referenced signal sources to successive-approximation registers (SARs) and delta-sigma (ΔΣ) analog-to-digital converters (ADCs) using single-supply 2.5-V to 5-V power.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V |
| Supply Current | 250 µA (Typical) |
| Power-Down Mode Current | 0.5 µA (Typical) |
| Bandwidth | 36 MHz (Av = 1 V/V) |
| Slew Rate | 200 V/µs |
| Total Harmonic Distortion (THD) | –120 dBc at 1 kHz (1 V RMS, R L= 2 kΩ) |
| Input Voltage Noise | 10 nV/√Hz (f = 1 kHz) |
| Input Offset Voltage (VOS) | ±100 µV |
| Input Offset Voltage Drift (VOSDrift) | ±3 µV/˚C (–40°C to +125°C) |
| Open-Loop Gain (AOL) | 114 dB |
| Operating Temperature Range | –40°C to +125°C |
| Package Options | 8-Pin SOIC (D), 8-Pin VSSOP (DGK), 10-Pin WQFN (RUN) |
Key Features
- Ultra-low power consumption
- Rail-to-rail output (RRO) and negative rail input (NRI)
- Accurate output common-mode control for DC coupling with ADCs
- High DC accuracy with low input offset voltage and drift
- Low noise and distortion
- Robust thermal and electrical characteristics
- Compact package options including 8-Pin SOIC, 8-Pin VSSOP, and 10-Pin WQFN
Applications
- Precision measurement and instrumentation
- Data acquisition systems
- Medical equipment
- Industrial controls
- Test and measurement equipment
Q & A
- What is the supply voltage range of the THS4531AIRUNR? The supply voltage range is 2.5 V to 5.5 V.
- What is the typical supply current of the THS4531AIRUNR? The typical supply current is 250 µA.
- What is the bandwidth of the THS4531AIRUNR? The bandwidth is 36 MHz (Av = 1 V/V).
- What is the slew rate of the THS4531AIRUNR? The slew rate is 200 V/µs.
- What is the input offset voltage of the THS4531AIRUNR? The input offset voltage is ±100 µV.
- What is the operating temperature range of the THS4531AIRUNR? The operating temperature range is –40°C to +125°C.
- What package options are available for the THS4531AIRUNR? The package options include 8-Pin SOIC, 8-Pin VSSOP, and 10-Pin WQFN.
- Is the THS4531AIRUNR suitable for high-density applications? Yes, it is designed for high-density applications where power consumption and dissipation are critical.
- What types of ADCs can the THS4531AIRUNR interface with? It can interface with successive-approximation registers (SARs) and delta-sigma (ΔΣ) ADCs.
- Is the THS4531AIRUNR ROHS compliant? Yes, it is ROHS3 compliant.
