Overview
The LMH5401IRMST from Texas Instruments is a high-performance, fully differential amplifier designed for radio frequency (RF), intermediate frequency (IF), and high-speed, dc-coupled, time-domain applications. This device is optimized for single-ended-to-differential (SE-DE) and differential-to-differential (DE-DE) conversions, making it ideal for driving analog-to-digital converters (ADCs) in various applications. The LMH5401IRMST features an unprecedented usable bandwidth from DC to 2 GHz and generates very low levels of second- and third-order distortion, making it suitable for test and measurement, broadband communications, and high-speed data acquisition.
Key Specifications
| Parameter | Value |
|---|---|
| Gain Bandwidth Product (GBP) | 8 GHz |
| Slew Rate | 17,500 V/µs |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | UQFN-14 |
| Power Supply Range | 3.3 V to 5 V |
| Power Consumption | 55 mA (typical at 5 V supply) |
| Input Voltage Noise | 1.25 nV/√Hz |
| Input Current Noise | 3.5 pA/√Hz |
| HD2 and HD3 Distortion (1 V PP, 200 Ω, DE-DE, G = 12 dB) | 100 MHz: HD2 at –104 dBc, HD3 at –96 dBc 200 MHz: HD2 at –95 dBc, HD3 at –92 dBc 500 MHz: HD2 at –80 dBc, HD3 at –77 dBc 1 GHz: HD2 at –64 dBc, HD3 at –58 dBc |
Key Features
- Excellent linearity performance with low second- and third-order distortion.
- High slew rate of 17,500 V/µs.
- Supports single- and dual-supply operation.
- Power-down feature for power savings.
- Common-mode reference input pin to align amplifier output common-mode with ADC input requirements.
- No external baluns required for SE-DE conversions.
- Low noise: 1.25 nV/√Hz input voltage noise and 3.5 pA/√Hz input current noise.
Applications
- Test and measurement equipment.
- Broadband communications.
- High-speed data acquisition systems.
- Radio frequency (RF) and intermediate frequency (IF) applications.
- DC- or AC-coupled applications requiring SE-DE or DE-DE conversions.
Q & A
- What is the gain bandwidth product (GBP) of the LMH5401IRMST?
The GBP of the LMH5401IRMST is 8 GHz. - What is the slew rate of the LMH5401IRMST?
The slew rate of the LMH5401IRMST is 17,500 V/µs. - What is the operating temperature range of the LMH5401IRMST?
The operating temperature range is -40°C to 85°C. - What type of package does the LMH5401IRMST come in?
The LMH5401IRMST comes in a UQFN-14 package. - What is the power consumption of the LMH5401IRMST?
The power consumption is typically 55 mA at a 5 V supply. - Does the LMH5401IRMST support dual-supply operation?
Yes, the LMH5401IRMST supports both single- and dual-supply operation. - What is the input voltage noise of the LMH5401IRMST?
The input voltage noise is 1.25 nV/√Hz. - Does the LMH5401IRMST require external baluns for SE-DE conversions?
No, the LMH5401IRMST does not require external baluns for SE-DE conversions. - What are some common applications of the LMH5401IRMST?
Common applications include test and measurement, broadband communications, and high-speed data acquisition. - Is there a power-down feature available on the LMH5401IRMST?
Yes, the LMH5401IRMST has a power-down feature for power savings.
