Overview
The THS4303 is a wideband, fixed-gain amplifier produced by Texas Instruments. This device is designed to offer high bandwidth, high slew rate, low noise, and low distortion, making it ideal for various high-speed analog signal processing applications. The THS4303 operates with a fixed closed-loop gain of 10 V/V (20 dB) and features a wide bandwidth of 1.8 GHz, making it suitable for wireless transceivers, IF amplifiers, ADC preamplifiers, and DAC output buffers.
Key Specifications
| Parameter | Typical Value | Units | Conditions |
|---|---|---|---|
| Small Signal Bandwidth | 1.8 GHz | G = +10, VO = 200 mVRMS, VS = 5 V, RL = 100 Ω | |
| Gain Bandwidth Product | 18 GHz | G = +10, VO = 200 mVRMS, VS = 5 V, RL = 100 Ω | |
| Full-Power Bandwidth | 1.5 GHz | G = +10, VO = 2 Vpp, VS = 5 V, RL = 100 Ω | |
| Slew Rate | 5500 V/µs | G = +10, VO = 2 V Step, VS = 5 V, RL = 100 Ω | |
| Harmonic Distortion (HD2) | –65 dBc | f = 70 MHz, RL = 100 Ω | |
| Harmonic Distortion (HD3) | –76 dBc | f = 70 MHz, RL = 100 Ω | |
| Output Current | ±180 mA | ||
| Supply Voltage | 3 V or 5 V | ||
| Operating Free-Air Temperature Range | –40°C to 85°C | ||
| Maximum Junction Temperature | 125°C | Continuous operation, long-term reliability |
Key Features
- Wideband signal processing with a bandwidth of 1.8 GHz
- Fixed closed-loop gain of 10 V/V (20 dB)
- High slew rate of 5500 V/µs
- Low total input-referred noise of 2.5 nV/√Hz
- Low distortion: HD2 –65 dBc at 70 MHz, HD3 –76 dBc at 70 MHz
- High output drive capability: ±180 mA
- Power-down mode for quiescent power savings
- Available in a 16-pin leadless package with PowerPAD for thermal enhancement
Applications
- Wireless transceivers
- IF amplifiers
- ADC preamplifiers
- DAC output buffers
- Test, measurement, and instrumentation
- Medical and industrial imaging
Q & A
- What is the typical bandwidth of the THS4303?
The THS4303 has a typical small signal bandwidth of 1.8 GHz.
- What is the fixed gain of the THS4303?
The THS4303 has a fixed closed-loop gain of 10 V/V (20 dB).
- What is the slew rate of the THS4303?
The slew rate of the THS4303 is 5500 V/µs.
- What are the typical harmonic distortion values for the THS4303?
The THS4303 has a second harmonic distortion (HD2) of –65 dBc and a third harmonic distortion (HD3) of –76 dBc at 70 MHz.
- What is the output current capability of the THS4303?
The THS4303 can drive up to ±180 mA of output current.
- What are the supply voltage options for the THS4303?
The THS4303 can operate with supply voltages of 3 V or 5 V.
- What is the operating temperature range of the THS4303?
The operating free-air temperature range of the THS4303 is –40°C to 85°C.
- Does the THS4303 have a power-down feature?
Yes, the THS4303 has a power-down mode that reduces the quiescent current from 34 mA to 1 mA.
- In what package is the THS4303 available?
The THS4303 is available in a 16-pin leadless package with PowerPAD for thermal enhancement.
- What are some common applications of the THS4303?
The THS4303 is commonly used in wireless transceivers, IF amplifiers, ADC preamplifiers, DAC output buffers, test and measurement equipment, and medical and industrial imaging.
