Overview
The THS4531IDGKR, 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 rail-to-rail output (RRO) and negative rail input (NRI), making it ideal for applications where power consumption and dissipation are critical. The THS4531IDGKR operates over an extended industrial temperature range from –40°C to +125°C and is available in various package options, including SOIC, VSSOP, and WQFN.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage | 2.5 to 5.5 | V |
| Quiescent Current | 250 | µA |
| Power-Down Current | 0.5 (typical) | µA |
| 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) | |
| Input Offset Voltage Drift | ±4 µV/°C (–40°C to +125°C) | |
| Open-Loop Gain | 114 dB | |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- Ultra-low power consumption with a quiescent current of 250 µA and a power-down current of 0.5 µA (typical)
- Fully-differential architecture with rail-to-rail output (RRO) and negative rail input (NRI)
- High bandwidth of 36 MHz and slew rate of 200 V/µs
- Low total harmonic distortion (THD) of –120 dBc at 1 kHz
- Low input voltage noise of 10 nV/√Hz at 1 kHz
- High DC accuracy with an input offset voltage drift of ±4 µV/°C
- Accurate output common-mode control for dc coupling with analog-to-digital converters (ADCs)
Applications
- Low-power SAR (Successive-Approximation Register) and ΔΣ (Delta-Sigma) ADC drivers
- Low-power, high-performance differential to differential and single-ended to differential amplifiers
- Low-power, wide-bandwidth differential drivers and signal conditioning applications
- High channel count and power-dense systems
- General-purpose, low-power differential signal conditioning
Q & A
- What is the supply voltage range for the THS4531IDGKR?
The supply voltage range is from 2.5 V to 5.5 V.
- What is the quiescent current of the THS4531IDGKR?
The quiescent current is 250 µA.
- What is the power-down current of the THS4531IDGKR?
The power-down current is typically 0.5 µA.
- What is the bandwidth of the THS4531IDGKR?
The bandwidth is 36 MHz.
- What is the slew rate of the THS4531IDGKR?
The slew rate is 200 V/µs.
- What is the total harmonic distortion (THD) of the THS4531IDGKR?
The THD is –120 dBc at 1 kHz (1 V RMS, RL = 2 kΩ).
- What is the input voltage noise of the THS4531IDGKR?
The input voltage noise is 10 nV/√Hz at 1 kHz.
- What is the operating temperature range of the THS4531IDGKR?
The operating temperature range is from –40°C to +125°C.
- What are the key applications of the THS4531IDGKR?
The key applications include low-power SAR and ΔΣ ADC drivers, low-power differential amplifiers, and general-purpose differential signal conditioning.
- What package options are available for the THS4531IDGKR?
The device is available in SOIC, VSSOP, and WQFN packages.
