Overview
The THS4541IRGTT is a low-power, voltage-feedback, fully differential amplifier (FDA) produced by Texas Instruments. This component 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 THS4541 features an input common-mode range below the negative rail and rail-to-rail output, making it ideal for interfacing dc-coupled, ground-centered source signals with various ADCs and DACs using a single 2.7V to 5.4V power supply.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-pin VQFN (RGT) |
| Operating Temperature Range | -40°C to 125°C |
| Bandwidth | 500MHz (G = 2V/V) |
| Gain Bandwidth Product | 850MHz |
| Slew Rate | 1500V/µs |
| HD2 | -95dBc at 10MHz (2VPP, RL = 500Ω) |
| HD3 | -90dBc at 10MHz (2VPP, RL = 500Ω) |
| Input Voltage Noise | 2.2nV/√Hz (f > 100kHz) |
| Low Offset Drift | ±0.5µV/°C (typical) |
| Power Supply | Single-supply: 2.7V to 5.4V, Split-supply: ±1.35V to ±2.7V |
| Quiescent Current | 10.1mA (5V supply) |
| Power-down Capability | 2µA (typical) |
Key Features
- Fully differential amplifier (FDA) architecture
- Negative rail input (NRI) and 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 and offset drift
Applications
The THS4541IRGTT is primarily used in 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 high-density analog signal processing and mixed-signal systems where low power and high performance are critical.
Q & A
- What is the primary application of the THS4541IRGTT?
The THS4541IRGTT is primarily used in low-power data acquisition systems, especially in high-performance ADC and DAC interface designs.
- What are the key features of the THS4541IRGTT?
The key features include fully differential amplifier architecture, negative rail input, rail-to-rail output, robust operation for Rload ≥ 50Ω, and low power consumption with power-down capability.
- What is the operating temperature range of the THS4541IRGTT?
The operating temperature range is -40°C to 125°C.
- What are the power supply options for the THS4541IRGTT?
The component can operate on a single-supply voltage range of 2.7V to 5.4V or a split-supply voltage range of ±1.35V to ±2.7V.
- What is the quiescent current of the THS4541IRGTT at 5V supply?
The quiescent current is 10.1mA at a 5V supply.
- What is the power-down current of the THS4541IRGTT?
The power-down current is 2µA (typical).
- What is the bandwidth of the THS4541IRGTT?
The bandwidth is 500MHz (G = 2V/V).
- What are the harmonic distortion specifications of the THS4541IRGTT?
The harmonic distortion specifications are HD2: –95dBc and HD3: –90dBc at 10MHz (2VPP, RL = 500Ω).
- What is the input voltage noise of the THS4541IRGTT?
The input voltage noise is 2.2nV/√Hz (f > 100kHz).
- What are the package options for the THS4541IRGTT?
The component is available in 16-pin VQFN and 10-pin WQFN packages.
