Overview
The THS3201, produced by Texas Instruments, is a wideband, high-speed current-feedback amplifier designed for high-performance applications. It operates over a wide supply range of ±3.3 V to ±7.5 V, making it suitable for various test, measurement, and automated test equipment (ATE) applications where lower-voltage devices may not provide sufficient voltage swing capability. The amplifier is known for its high slew rate, low distortion, and excellent linearity, making it ideal for driving high-resolution and high-sampling rate analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Unity Gain Bandwidth | 1.8 GHz | |
| High Slew Rate | 6700 V/µs (G = 2 V/V, RL = 100 Ω, 10-V Step) | V/µs |
| IMD3 | –78 dBc at 20 MHz (G = 10 V/V, RL = 100 Ω, 2-VPP Envelope) | dBc |
| Noise Figure | 11 dB (G = 10 V/V, RG = 28 Ω, RF = 255 Ω) | dB |
| Input-Referred Noise (f > 10 MHz) | 1.65 nV/√Hz (Voltage Noise) | nV/√Hz |
| Input-Referred Noise (f > 10 MHz) | 13.4 pA/√Hz (Noninverting Current Noise), 20 pA/√Hz (Inverting Current Noise) | pA/√Hz |
| Output Drive | 100 mA | mA |
| Power-Supply Voltage Range | ±3.3 V to ±7.5 V | V |
| Maximum Quiescent Current | 20 mA | mA |
| Power-Supply Rejection Ratio (+PSRR) | 69 dB (VS+ = 4.5 V to 5.5 V) | dB |
| Power-Supply Rejection Ratio (–PSRR) | 65 dB (VS– = –4.5 V to –5.5 V) | dB |
Key Features
- High slew rate of 6700 V/µs (G = 2 V/V, RL = 100 Ω, 10-V Step)
- Low distortion with IMD3 of –78 dBc at 20 MHz (G = 10 V/V, RL = 100 Ω, 2-VPP Envelope)
- Noise figure of 11 dB (G = 10 V/V, RG = 28 Ω, RF = 255 Ω)
- Low input-referred noise: 1.65 nV/√Hz (voltage noise), 13.4 pA/√Hz (noninverting current noise), and 20 pA/√Hz (inverting current noise) for frequencies greater than 10 MHz
- High output drive capability of 100 mA
- Wide power-supply voltage range of ±3.3 V to ±7.5 V
- Excellent linearity in high dynamic systems with nearly independent output rise and fall times of step size
- Available in 5-pin SOT-23, 8-pin SOIC, and 8-pin MSOP with PowerPAD™ packages
Applications
- Arbitrary waveform driver applications
- Driving high-resolution and high-sampling rate analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Test and measurement applications
- Automated test equipment (ATE) applications
- High-performance applications requiring low distortion and high slew rates
Q & A
- What is the unity gain bandwidth of the THS3201? The unity gain bandwidth of the THS3201 is 1.8 GHz.
- What is the slew rate of the THS3201? The slew rate of the THS3201 is 6700 V/µs (G = 2 V/V, RL = 100 Ω, 10-V Step).
- What is the typical noise figure of the THS3201? The typical noise figure of the THS3201 is 11 dB (G = 10 V/V, RG = 28 Ω, RF = 255 Ω).
- What is the input-referred noise of the THS3201? The input-referred noise of the THS3201 is 1.65 nV/√Hz (voltage noise), 13.4 pA/√Hz (noninverting current noise), and 20 pA/√Hz (inverting current noise) for frequencies greater than 10 MHz.
- What is the output drive capability of the THS3201? The output drive capability of the THS3201 is 100 mA.
- What is the power-supply voltage range of the THS3201? The power-supply voltage range of the THS3201 is ±3.3 V to ±7.5 V.
- In what packages is the THS3201 available? The THS3201 is available in 5-pin SOT-23, 8-pin SOIC, and 8-pin MSOP with PowerPAD™ packages.
- What are some common applications of the THS3201? Common applications include arbitrary waveform driver applications, driving high-resolution and high-sampling rate ADCs and DACs, test and measurement, and ATE applications.
- Why is the THS3201 suitable for high dynamic systems? The THS3201 is suitable for high dynamic systems due to its excellent linearity and nearly independent output rise and fall times of step size.
- What is the maximum quiescent current of the THS3201? The maximum quiescent current of the THS3201 is 20 mA.
