Overview
The LMH5401IRMSR, produced by Texas Instruments, is a high-performance, fully differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), and high-speed, dc-coupled, time-domain applications. This device is ideal for dc- or ac-coupled applications that require single-ended-to-differential (SE-DE) or differential-to-differential (DE-DE) conversions, particularly when driving analog-to-digital converters (ADCs). The LMH5401IRMSR features an unprecedented usable bandwidth from DC to 2 GHz and generates very low levels of second- and third-order distortion. It is fabricated in Texas Instruments' advanced complementary BiCMOS process and is available in a space-saving UQFN-14 package.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| Gain Bandwidth Product (GBP) | 8 | GHz | G = 30 dB | ||
| Supply Voltage (VS) | 3.15 | 5.25 | V | VS+ - VS- | |
| Power Consumption | 275 | mW | At 5-V supply | ||
| Input Offset Voltage (VOS) | ±0.5 | ±5 | mV | ||
| Input Bias Current (IB) | 70 | 150 | µA | ||
| Common-Mode Rejection Ratio (CMRR) | 72 | dBc | Differential, 1-VPP input shift, DC | ||
| Output Voltage Range (VOCRH/VOCRL) | (VS+) - 1.3 / (VS-) + 1.3 | (VS+) - 1.1 / (VS-) + 1.1 | (VS+) - 1.2 / (VS-) + 1.2 | V | Single-ended, TA = 25°C to 85°C |
| Differential Output Voltage Swing (VOD) | 5.8 | VPP | Differential | ||
| Power-Down Feature | Logic 1 = power down |
Key Features
- High-performance, fully differential amplifier with a gain bandwidth product of 8 GHz.
- Optimized for RF, IF, and high-speed, dc-coupled, time-domain applications.
- Low levels of second- and third-order distortion in SE-DE and DE-DE modes.
- Usable bandwidth from DC to 2 GHz.
- No external baluns required for SE-DE conversions.
- Common-mode reference input pin to align amplifier output common-mode with ADC input requirements.
- Power supplies between 3.3 V and 5 V, with dual-supply operation supported.
- Power-down feature for power savings.
- Space-saving UQFN-14 package.
Applications
- Test and measurement equipment.
- Broadband communications.
- High-speed data acquisition.
- GSPS ADC drivers.
- ADC drivers for 1-Gbps Ethernet over microwave.
- DAC buffers.
- IF, RF, and baseband gain blocks.
- SAW filter buffers and drivers.
- Level shifters.
Q & A
- What is the gain bandwidth product of the LMH5401IRMSR?
The gain bandwidth product of the LMH5401IRMSR is 8 GHz.
- What are the supported supply voltage ranges for the LMH5401IRMSR?
The device supports supply voltages between 3.3 V and 5 V.
- What is the power consumption of the LMH5401IRMSR at a 5-V supply?
The power consumption is 275 mW at a 5-V supply.
- Does the LMH5401IRMSR require external baluns for SE-DE conversions?
No, the LMH5401IRMSR does not require external baluns for SE-DE conversions.
- What is the common-mode rejection ratio (CMRR) of the LMH5401IRMSR?
The CMRR is 72 dBc for differential operation with a 1-VPP input shift at DC.
- What are the typical applications of the LMH5401IRMSR?
Typical applications include test and measurement, broadband communications, high-speed data acquisition, and ADC drivers.
- What package type is the LMH5401IRMSR available in?
The device is available in a UQFN-14 package.
- Does the LMH5401IRMSR have a power-down feature?
- What is the slew rate of the LMH5401IRMSR?
The specific slew rate value is not provided in the summary, but it is mentioned as part of the device's high-performance characteristics.
- How does the LMH5401IRMSR align its output common-mode voltage with ADC input requirements?
The device has a common-mode reference input pin to align the amplifier output common-mode with the ADC input requirements.
