Overview
The THS4551IDGKT is a Low Noise, Precision, 150MHz, Fully Differential Amplifier produced by Texas Instruments. This device is designed to provide an easy interface from single-ended sources to the differential output required by high-precision analog-to-digital converters (ADCs). It is characterized by exceptional dc accuracy, low noise, and robust capacitive load driving, making it well-suited for data acquisition systems that demand high precision and optimal signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).
Key Specifications
| Parameter | Value |
|---|---|
| Bandwidth | 150 MHz (G = 1 V/V) |
| Differential Output Slew Rate | 220 V/µs |
| Gain Bandwidth Product | 135 MHz |
| Settling Time (4-V Step to 0.01%) | < 50 ns |
| 18-Bit Settling Time (4-V Step) | < 500 ns |
| Input Offset Voltage | ±175 µV (max) at 25°C |
| Input Offset Voltage Drift | ±1.8 µV/°C (max) |
| Differential Input Voltage Noise | 3.3 nV/√ Hz |
| HD2 | –128 dBc at 2 V PP, 100 kHz |
| HD3 | –139 dBc at 2 V PP, 100 kHz |
| Supply Voltage Range | 2.7 V to 5.4 V |
| Supply Current | 1.37 mA at 5 V |
| Operating Temperature Range | –40°C to +125°C |
| Package Type | 8-pin VSSOP (DGK) |
Key Features
- Negative Rail Input (NRI) and Rail-to-Rail Output (RRO)
- Wide Output Common-Mode Control Range
- Low dc error and drift terms, supporting 16- to 20-bit SAR ADCs
- Robust capacitive load driving
- Single-supply operation with a wide supply voltage range
- High precision and low noise, suitable for high-precision data acquisition systems
Applications
The THS4551IDGKT is particularly suited for data acquisition systems that require high precision, low noise, and robust performance. Key applications include:
- High-precision analog-to-digital converters (ADCs)
- Data acquisition systems requiring high SNR and SFDR
- Systems interfacing dc-coupled, ground-centered source signals to single-supply differential input ADCs
- Successive-approximation register (SAR) ADCs with 16- to 20-bit resolution
Q & A
- What is the bandwidth of the THS4551IDGKT?
The bandwidth of the THS4551IDGKT is 150 MHz at a gain of 1 V/V.
- What is the differential output slew rate of the THS4551IDGKT?
The differential output slew rate is 220 V/µs.
- What is the settling time for a 4-V step to 0.01%?
The settling time for a 4-V step to 0.01% is less than 50 ns.
- What is the input offset voltage of the THS4551IDGKT?
The input offset voltage is ±175 µV (max) at 25°C.
- What is the operating temperature range of the THS4551IDGKT?
The operating temperature range is –40°C to +125°C.
- What package types are available for the THS4551IDGKT?
The device is available in 8-pin VSSOP, 16-pin VQFN, and 10-pin WQFN packages.
- What is the supply voltage range for the THS4551IDGKT?
The supply voltage range is 2.7 V to 5.4 V.
- What is the typical supply current of the THS4551IDGKT at 5 V?
The typical supply current is 1.37 mA at 5 V.
- What are the key applications of the THS4551IDGKT?
The key applications include high-precision ADCs, data acquisition systems, and SAR ADCs with 16- to 20-bit resolution.
- Does the THS4551IDGKT support negative rail input and rail-to-rail output?
Yes, the THS4551IDGKT supports negative rail input (NRI) and rail-to-rail output (RRO).
