Overview
The THS4561IRUNR is a low-power, 60-MHz, wide-supply-range fully differential amplifier produced by Texas Instruments. This device is designed to provide a simple interface from single-ended sources to the differential output required by precision analog-to-digital converters (ADCs). It is particularly suited for power-sensitive data acquisition (DAQ) systems, offering high performance with a superior signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination.
Key Specifications
| Parameter | Value |
|---|---|
| Bandwidth | 60 MHz (G = 1 V/V) |
| Slew Rate | 230 V/µs |
| Gain Bandwidth Product | 68 MHz |
| Voltage Noise | 1/f Voltage Noise Corner: 8 Hz, Broadband Noise (≥ 500 Hz): 4 nV/√ Hz |
| Input Offset | ±250 µV (Maximum) |
| Drift | ±4 µV/°C (Maximum) |
| Supply Operating Range | 2.85 V to 12.6 V |
| Supply Current | 775 µA |
| Operating Temperature Range | –40°C to +125°C |
| Package | WQFN (RUN) - 10 pins |
| Total Harmonic Distortion (THD) | 130 dB |
| Settling Time (0.01% for 2-V Step) | 90 ns |
Key Features
- Low 8-Hz, 1/f voltage noise corner and low 130-dB total harmonic distortion (THD).
- Low quiescent current of 775 µA, making it suitable for power-sensitive applications.
- Negative rail input (NRI) and rail-to-rail output (RRO) capabilities.
- Flexible output common-mode setting with low headroom to the supplies.
- Support for high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC input requirements.
- Very low harmonic distortion: HD2: –117 dBc and HD3: –124 dBc at 2 V PP, 100 kHz.
Applications
The THS4561IRUNR is ideal for power-sensitive data acquisition (DAQ) systems where high performance, superior signal-to-noise ratio (SNR), and spurious-free dynamic range (SFDR) are required. It is particularly useful in applications involving precision analog-to-digital converters (ADCs), such as in high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC systems.
Q & A
- What is the bandwidth of the THS4561IRUNR? The bandwidth of the THS4561IRUNR is 60 MHz (G = 1 V/V).
- What is the slew rate of the THS4561IRUNR? The slew rate of the THS4561IRUNR is 230 V/µs.
- What is the supply operating range of the THS4561IRUNR? The supply operating range of the THS4561IRUNR is from 2.85 V to 12.6 V.
- What is the quiescent current of the THS4561IRUNR? The quiescent current of the THS4561IRUNR is 775 µA.
- What is the operating temperature range of the THS4561IRUNR? The operating temperature range of the THS4561IRUNR is from –40°C to +125°C.
- What type of package does the THS4561IRUNR come in? The THS4561IRUNR comes in a WQFN (RUN) package with 10 pins.
- What are the key features of the THS4561IRUNR in terms of noise and distortion? The THS4561IRUNR has a low 8-Hz, 1/f voltage noise corner and low 130-dB total harmonic distortion (THD).
- Is the THS4561IRUNR suitable for high-speed ADC applications? Yes, the THS4561IRUNR is suitable for high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC applications.
- What is the settling time of the THS4561IRUNR for a 2-V step? The settling time of the THS4561IRUNR for a 2-V step is 90 ns to 0.01%.
- Does the THS4561IRUNR support negative rail input and rail-to-rail output? Yes, the THS4561IRUNR supports negative rail input (NRI) and rail-to-rail output (RRO).
