Overview
The THS4551IDGKR, produced by Texas Instruments, is a low-noise, precision, 150MHz fully differential amplifier. 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 optimized for exceptional dc accuracy, low noise, and robust capacitive load driving, making it well-suited for data acquisition systems that demand high precision and excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bandwidth | 150 MHz (G = 1 V/V) | MHz |
| Differential Output Slew Rate | 220 V/µs | V/µs |
| Gain Bandwidth Product | 135 MHz | MHz |
| Input Offset Voltage | ±175 µV (max at 25°C) | µV |
| Input Offset Voltage Drift | ±1.8 µV/°C (max) | µV/°C |
| Differential Input Voltage Noise | 3.3 nV/√ Hz | nV/√ Hz |
| HD2 | –128 dBc at 2 VPP, 100 kHz | dBc |
| HD3 | –139 dBc at 2 VPP, 100 kHz | dBc |
| Settling Time (50-ns, 4-V Step to 0.01%) | < 50 ns | ns |
| Settling Time (18-Bit, 4-V Step) | < 500 ns | ns |
| Single-Supply Operating Range | 2.7 V to 5.4 V | V |
| Trimmed-Supply Current at 5 V | 1.37 mA | mA |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Options | 8-pin VSSOP, 16-pin VQFN, 10-pin WQFN |
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
- Exceptional dc accuracy and low noise
- Pin-compatible upgrade to the THS4521 (VSSOP-8 only)
- Wide temperature range operation: –40°C to +125°C
Applications
- 24-Bit, Delta-Sigma (ΔΣ) ADC Drivers
- 16- to 20-Bit, Differential, High-Speed SAR Drivers
- Differential Active Filters
- Differential Transimpedance Amplifiers
- Data acquisition systems requiring high precision and low noise
Q & A
- What is the bandwidth of the THS4551IDGKR?
The bandwidth of the THS4551IDGKR is 150 MHz at a gain of 1 V/V.
- What is the differential output slew rate of the THS4551IDGKR?
The differential output slew rate is 220 V/µs.
- What are the input offset voltage and drift specifications?
The input offset voltage is ±175 µV (max at 25°C), and the input offset voltage drift is ±1.8 µV/°C (max).
- What is the differential input voltage noise of the THS4551IDGKR?
The differential input voltage noise is 3.3 nV/√ Hz.
- What are the harmonic distortion specifications?
The THS4551IDGKR has an HD2 of –128 dBc and an HD3 of –139 dBc at 2 VPP, 100 kHz.
- What is the settling time for a 4-V step to 0.01% accuracy?
The settling time is less than 50 ns for a 4-V step to 0.01% accuracy.
- What is the single-supply operating range of the THS4551IDGKR?
The single-supply operating range is from 2.7 V to 5.4 V.
- What are the package options available for the THS4551IDGKR?
The device is available in 8-pin VSSOP, 16-pin VQFN, and 10-pin WQFN packages.
- What are some typical applications of the THS4551IDGKR?
Typical applications include 24-Bit ΔΣ ADC drivers, 16- to 20-Bit differential high-speed SAR drivers, differential active filters, and differential transimpedance amplifiers.
- What is the operating temperature range of the THS4551IDGKR?
The operating temperature range is from –40°C to +125°C.
