Overview
The THS4561IDGKR is a low-power, 60-MHz, wide-supply-range fully differential amplifier manufactured 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 excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination. The THS4561IDGKR operates over a wide supply range of 2.85 V to 12.6 V and is characterized for operation from –40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Bandwidth | 60 MHz (G = 1 V/V) |
| Slew Rate | 230 V/µs |
| Gain Bandwidth Product | 68 MHz |
| 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 |
| Package | VSSOP (DGK) with 8 pins |
| Operating Temperature Range | –40°C to +125°C |
| Harmonic Distortion (HD2, HD3) | –117 dBc and –124 dBc at 2 V PP, 100 kHz |
| Settling Time (0.01% for 2-V Step) | 90 ns |
Key Features
- Low power consumption with a quiescent current of 775 µA.
- Wide supply range from 2.85 V to 12.6 V.
- Negative Rail Input (NRI) and Rail-to-Rail Output (RRO).
- Very low harmonic distortion with HD2 and HD3 of –117 dBc and –124 dBc at 2 V PP, 100 kHz.
- Low DC error and drift terms, supporting high-speed and high-resolution ADCs.
- Flexible output common-mode setting with low headroom to the supplies.
- High bandwidth of 60 MHz and slew rate of 230 V/µs.
- Low 1/f voltage noise corner of 8 Hz and broadband noise of 4 nV/√ Hz.
Applications
- Power-sensitive data acquisition (DAQ) systems.
- Precision analog-to-digital converters (ADCs), including successive approximation register (SAR) and delta-sigma (ΔΣ) ADCs.
- Digital-to-analog converter (DAC) output requirements.
- High-speed and high-resolution data acquisition systems.
- Industrial and medical devices requiring low noise and high signal integrity.
Q & A
- What is the bandwidth of the THS4561IDGKR?
The bandwidth of the THS4561IDGKR is 60 MHz (G = 1 V/V).
- What is the slew rate of the THS4561IDGKR?
The slew rate of the THS4561IDGKR is 230 V/µs.
- What is the supply operating range of the THS4561IDGKR?
The supply operating range of the THS4561IDGKR is from 2.85 V to 12.6 V.
- What is the input offset of the THS4561IDGKR?
The input offset of the THS4561IDGKR is ±250 µV (Maximum).
- Does the THS4561IDGKR support negative rail input and rail-to-rail output?
Yes, the THS4561IDGKR supports both negative rail input (NRI) and rail-to-rail output (RRO).
- What are the harmonic distortion specifications of the THS4561IDGKR?
The THS4561IDGKR has harmonic distortion specifications of HD2: –117 dBc and HD3: –124 dBc at 2 V PP, 100 kHz.
- What is the settling time for a 2-V step input?
The settling time for a 2-V step input is 90 ns to 0.01%.
- What is the operating temperature range of the THS4561IDGKR?
The operating temperature range of the THS4561IDGKR is from –40°C to +125°C.
- What types of ADCs is the THS4561IDGKR suitable for?
The THS4561IDGKR is suitable for high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADCs.
- What are some common applications of the THS4561IDGKR?
The THS4561IDGKR is commonly used in power-sensitive data acquisition (DAQ) systems, precision ADCs, and DAC output requirements.
