Overview
The THS4531AIDGKR, produced by Texas Instruments, is an ultra-low power, fully differential amplifier designed for low-power data acquisition systems and high-density applications. This device features a fully differential architecture with input common-mode range below the negative rail and rail-to-rail output, making it ideal for applications where power consumption and dissipation are critical. It is particularly useful for driving analog-to-digital converters (ADCs) such as successive-approximation registers (SARs) and delta-sigma (ΔΣ) ADCs using single-supply 2.5 V to 5 V power.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage Supply | 2.5 V to 5.5 V |
| Quiescent Current | 250 µA |
| 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, RL = 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) |
| AOL (Open-Loop Gain) | 114 dB |
| Package Options | 8-Pin SOIC (D), 8-Pin VSSOP (DGK), 10-Pin WQFN (RUN) |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- Ultra-low power consumption
- Fully differential architecture
- Rail-to-rail output (RRO)
- 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 input voltage noise
- High open-loop gain (AOL)
Applications
- Low-power data acquisition systems
- High-density applications where power consumption is critical
- Driving analog-to-digital converters (ADCs) such as SARs and ΔΣ ADCs
- General-purpose, low-power differential signal conditioning
- Low-power, wide-bandwidth differential drivers
Q & A
- What is the voltage supply range for the THS4531AIDGKR?
The voltage supply range is 2.5 V to 5.5 V. - What is the quiescent current of the THS4531AIDGKR?
The quiescent current is 250 µA. - What is the power-down mode current of the THS4531AIDGKR?
The power-down mode current is 0.5 µA (Typical). - What is the bandwidth of the THS4531AIDGKR?
The bandwidth is 36 MHz (Av = 1 V/V). - What is the slew rate of the THS4531AIDGKR?
The slew rate is 200 V/µs. - What is the total harmonic distortion (THD) of the THS4531AIDGKR?
The THD is –120 dBc at 1 kHz (1 V RMS, RL = 2 kΩ). - What is the input voltage noise of the THS4531AIDGKR?
The input voltage noise is 10 nV/√Hz (f = 1 kHz). - What are the package options available for the THS4531AIDGKR?
The package options are 8-Pin SOIC (D), 8-Pin VSSOP (DGK), and 10-Pin WQFN (RUN). - What is the operating temperature range of the THS4531AIDGKR?
The operating temperature range is –40°C to +125°C. - What are some common applications of the THS4531AIDGKR?
Common applications include low-power data acquisition systems, high-density applications, driving ADCs, and general-purpose low-power differential signal conditioning.
