Overview
The LMH6554LEE/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 its performance even at gains greater than unity without compromising response flatness, bandwidth, harmonic distortion, or output noise performance.
Key Specifications
| Specification | Value |
|---|---|
| Package | 14-Lead UQFN (NHJ) |
| Operating Temperature Range (°C) | -40 to 125 |
| 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 |
Key Features
- High-performance fully differential amplifier with unity gain and 2.8 GHz small-signal bandwidth.
- Large-signal bandwidth of 1.8 GHz.
- 0.1 dB gain flatness up to 830 MHz.
- OIP3 of 46.5 dBm at 150 MHz and HD2/HD3 of 96 / 97 dBc at 75 MHz.
- Low input noise voltage of 0.9 nV/√Hz and input noise current of 11 pA/√Hz.
- High slew rate of 6200 V/µs.
- 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 LMH6554LEE/NOPB is primarily used in high-speed data acquisition systems, particularly those requiring 8- to 16-bit resolution. It is suitable for driving ADC inputs and any intermediate filter stages due to its low-impedance differential output. Other applications include high-frequency signal processing, medical imaging, and any system that demands high signal fidelity and wide bandwidth.
Q & A
- What is the small-signal bandwidth of the LMH6554?
The small-signal bandwidth of the LMH6554 is 2.8 GHz.
- What is the large-signal bandwidth of the LMH6554?
The large-signal bandwidth of the LMH6554 is 1.8 GHz.
- What is the gain flatness of the LMH6554 up to 830 MHz?
The gain flatness of the LMH6554 is 0.1 dB up to 830 MHz.
- What is the OIP3 of the LMH6554 at 150 MHz?
The OIP3 of the LMH6554 at 150 MHz is 46.5 dBm.
- What are the HD2 and HD3 values of the LMH6554 at 75 MHz?
The HD2 and HD3 values of the LMH6554 at 75 MHz are 96 dBc and 97 dBc, respectively.
- What is the input noise voltage of the LMH6554?
The input noise voltage of the LMH6554 is 0.9 nV/√Hz.
- What is the slew rate of the LMH6554?
The slew rate of the LMH6554 is 6200 V/µs.
- What is the typical supply current of the LMH6554?
The typical supply current of the LMH6554 is 52 mA.
- In what package is the LMH6554 available?
The LMH6554 is available in a 14-lead UQFN package.
- What is the operating temperature range of the LMH6554?
The operating temperature range of the LMH6554 is -40°C to 125°C.
