Overview
The THS4541IRGTR is a low-power, voltage-feedback, fully differential amplifier (FDA) produced by Texas Instruments. It is designed for low-power data acquisition systems where high density is critical, particularly in high-performance analog-to-digital converter (ADC) or digital-to-analog converter (DAC) interface designs. The amplifier features an input common-mode range below the negative rail and rail-to-rail output, making it suitable for interfacing dc-coupled, ground-centered source signals with various types of ADCs and DACs.
Key Specifications
| Parameter | Value |
|---|---|
| Bandwidth (G = 2V/V) | 500 MHz |
| Gain Bandwidth Product | 850 MHz |
| Slew Rate | 1500 V/µs |
| HD2 at 10 MHz (2VPP, RL = 500Ω) | –95 dBc |
| HD3 at 10 MHz (2VPP, RL = 500Ω) | –90 dBc |
| Input Voltage Noise (f > 100 kHz) | 2.2 nV/√Hz |
| Offset Drift | ±0.5 µV/°C (typical) |
| Input Common-Mode Range | Below negative rail |
| Output Type | Rail-to-Rail Output (RRO) |
| Power Supply Voltage Range (Single-Supply) | 2.7 V to 5.4 V |
| Power Supply Voltage Range (Split-Supply) | ±1.35 V to ±2.7 V |
| Quiescent Current (5V supply) | 10.1 mA |
| Power-Down Current | 2 µA (typical) |
| Operating Temperature Range | –40°C to +125°C |
| Package Types | 16-pin VQFN, 10-pin WQFN |
Key Features
- Fully differential amplifier (FDA) architecture
- Negative rail input (NRI)
- Rail-to-rail output (RRO)
- Robust operation for Rload ≥ 50Ω
- Output common-mode control
- Low power consumption with power-down capability
- High bandwidth and gain bandwidth product
- Low harmonic distortion (HD2 and HD3)
- Low input voltage noise
- Low offset drift
Applications
The THS4541IRGTR is ideal for low-power data acquisition systems, particularly in high-performance ADC and DAC interface designs. It is suitable for interfacing single-ended, ground-referenced, bipolar signal sources with successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs. Other applications include medical imaging, industrial automation, and high-speed data acquisition systems where precision and low power consumption are critical.
Q & A
- What is the bandwidth of the THS4541IRGTR? The bandwidth of the THS4541IRGTR is 500 MHz at a gain of 2V/V.
- What is the gain bandwidth product of the THS4541IRGTR? The gain bandwidth product is 850 MHz.
- What is the slew rate of the THS4541IRGTR? The slew rate is 1500 V/µs.
- What is the input common-mode range of the THS4541IRGTR? The input common-mode range is below the negative rail.
- What are the power supply voltage ranges for the THS4541IRGTR? The single-supply voltage range is 2.7 V to 5.4 V, and the split-supply voltage range is ±1.35 V to ±2.7 V.
- What is the quiescent current of the THS4541IRGTR at 5V supply? The quiescent current is 10.1 mA.
- Does the THS4541IRGTR have power-down capability? Yes, it has a power-down capability with a typical current of 2 µA.
- What are the package types available for the THS4541IRGTR? The THS4541IRGTR is available in 16-pin VQFN and 10-pin WQFN packages.
- What is the operating temperature range of the THS4541IRGTR? The operating temperature range is –40°C to +125°C.
- What types of ADCs can the THS4541IRGTR interface with? The THS4541IRGTR can interface with successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs.
