Overview
The THS7530PWPR, produced by Texas Instruments, is a high-speed, fully differential, continuously variable gain amplifier. Fabricated using Texas Instruments' state-of-the-art BiCom III SiGe complementary bipolar process, this device offers exceptional signal-channel performance with a 300-MHz bandwidth. It is designed for applications requiring precise gain control and high signal integrity, making it suitable for various fields such as ultrasound, sonar, radar, communication systems, and instrumentation.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Bandwidth | 300 | MHz |
| Gain Range | 11.6 dB to 46.5 dB | dB |
| Gain Slope | 38.8 dB/V | dB/V |
| Noise Figure | 9 | dB |
| Harmonic Distortion (2nd harmonic) | –65 dBc at 32 MHz | dBc |
| Harmonic Distortion (3rd harmonic) | –61 dBc at 32 MHz | dBc |
| Slew Rate | 1250 V/µs | V/µs |
| Settling Time to 1% | 11 ns | ns |
| Output Impedance | 15 Ω | Ω |
| Power Supply Voltage | 5 V | V |
| Quiescent Current | 40 mA | mA |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | HTSSOP (14-pin) |
Key Features
- Continuously Variable Gain Control: The gain is a linear function of the gain control voltage, ranging from 0 V to 0.9 V, with a gain slope of 38.8 dB/V and a gain range of 11.6 dB to 46.5 dB.
- Fully Differential Input and Output: High-impedance differential inputs and low-impedance differential outputs.
- Output Common-Mode Voltage Control: Sets the common-mode voltage of the differential output with a gain of 1 V/V.
- Output Voltage Clamps: Separate inputs (VCL+ and VCL–) to limit the output voltage swing, preventing saturation of following stages.
- Power-Down Mode: Reduces quiescent current to 350 µA, with a turn-on time of 820 ns and a turn-off time of 500 ns.
- High Bandwidth Gain Control: 15 MHz bandwidth for the gain control input.
- Low Noise and Distortion: Low noise figure of 9 dB and harmonic distortion of –65 dBc (2nd harmonic) and –61 dBc (3rd harmonic) at 32 MHz.
Applications
- Time Gain Amplifiers in Ultrasound, Sonar, and Radar: Utilizes the continuously variable gain and high bandwidth for precise signal amplification.
- Automatic Gain Control in Communication and Video Systems: Ensures consistent signal amplitude in communication and video applications.
- System Gain Calibration in Communications: Provides precise gain control for system calibration.
- Variable Gain in Instrumentation: Suitable for various instrumentation applications requiring adjustable gain.
Q & A
- What is the bandwidth of the THS7530PWPR amplifier?
The bandwidth of the THS7530PWPR amplifier is 300 MHz.
- What is the gain range of the THS7530PWPR?
The gain range is from 11.6 dB to 46.5 dB.
- How does the gain control work in the THS7530PWPR?
The gain is controlled by a differential voltage input ranging from 0 V to 0.9 V, with a gain slope of 38.8 dB/V.
- What is the noise figure of the THS7530PWPR?
The noise figure is 9 dB.
- What are the harmonic distortion specifications of the THS7530PWPR?
The harmonic distortion is –65 dBc for the 2nd harmonic and –61 dBc for the 3rd harmonic at 32 MHz.
- How does the output common-mode voltage control work?
The common-mode voltage control sets the common-mode voltage of the differential output with a gain of 1 V/V.
- What is the purpose of the output voltage clamps in the THS7530PWPR?
The output voltage clamps (VCL+ and VCL–) limit the output voltage swing to prevent saturation of following stages.
- Does the THS7530PWPR have a power-down mode?
Yes, the THS7530PWPR has a power-down mode that reduces the quiescent current to 350 µA.
- What is the operating temperature range of the THS7530PWPR?
The operating temperature range is –40°C to +85°C.
- What is the package type of the THS7530PWPR?
The package type is HTSSOP (14-pin).
