Overview
The LMH6554LEX/NOPB is a high-performance fully differential amplifier produced by Texas Instruments. This device is designed to provide exceptional signal fidelity and wide large-signal bandwidth, making it ideal for driving 8- to 16-bit high-speed data acquisition systems. Utilizing TI's proprietary differential current mode input stage architecture, the LMH6554 offers unity gain with a small-signal bandwidth of 2.8 GHz and maintains performance at gains greater than unity without compromising response flatness, bandwidth, harmonic distortion, or output noise performance.
Key Specifications
| Parameter | Value |
|---|---|
| Small-Signal Bandwidth | 2.8 GHz |
| Large-Signal Bandwidth | 1.8 GHz |
| 0.1 dB Gain Flatness | 830 MHz |
| OIP3 at 150 MHz | 46.5 dBm |
| HD2/HD3 at 75 MHz | -96 / -97 dBc |
| Input Noise Voltage | 0.9 nV/√Hz |
| Input Noise Current | 11 pA/√Hz |
| Slew Rate | 6200 V/µs |
| Power Consumption | 260 mW |
| Typical Supply Current | 52 mA |
| Package Type | 14-Lead UQFN |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- High-performance fully differential amplifier with exceptional signal fidelity and wide large-signal bandwidth.
- Unity gain with small-signal bandwidth of 2.8 GHz and large-signal bandwidth of 1.8 GHz.
- Low-impedance differential output designed to drive ADC inputs and intermediate filter stages.
- Delivers 16-bit linearity up to 75 MHz when driving 2-V peak-to-peak into loads as low as 200 Ω.
- Fabricated in TI's advanced complementary BiCMOS process.
- Available in a space-saving 14-lead UQFN package.
Applications
The LMH6554LEX/NOPB is primarily used in high-speed data acquisition systems, including those requiring 8- to 16-bit resolution. It is suitable for driving ADC inputs and any intermediate filter stages. Other potential applications include high-speed instrumentation, medical imaging, and communication systems where high signal fidelity and wide bandwidth are critical.
Q & A
- What is the small-signal bandwidth of the LMH6554LEX/NOPB?
The small-signal bandwidth of the LMH6554LEX/NOPB is 2.8 GHz. - What is the large-signal bandwidth of the LMH6554LEX/NOPB?
The large-signal bandwidth of the LMH6554LEX/NOPB is 1.8 GHz. - What is the typical supply current of the LMH6554LEX/NOPB?
The typical supply current of the LMH6554LEX/NOPB is 52 mA. - What is the slew rate of the LMH6554LEX/NOPB?
The slew rate of the LMH6554LEX/NOPB is 6200 V/µs. - What is the input noise voltage of the LMH6554LEX/NOPB?
The input noise voltage of the LMH6554LEX/NOPB is 0.9 nV/√Hz. - What is the operating temperature range of the LMH6554LEX/NOPB?
The operating temperature range of the LMH6554LEX/NOPB is -40°C to 125°C. - In what package type is the LMH6554LEX/NOPB available?
The LMH6554LEX/NOPB is available in a 14-lead UQFN package. - What are the primary applications of the LMH6554LEX/NOPB?
The primary applications include high-speed data acquisition systems, high-speed instrumentation, medical imaging, and communication systems. - What is the OIP3 at 150 MHz for the LMH6554LEX/NOPB?
The OIP3 at 150 MHz for the LMH6554LEX/NOPB is 46.5 dBm. - What is the harmonic distortion (HD2/HD3) at 75 MHz for the LMH6554LEX/NOPB?
The harmonic distortion (HD2/HD3) at 75 MHz for the LMH6554LEX/NOPB is -96 / -97 dBc.
