**LTC6373IDFM#PBF: A Precision Differential ADC Driver for High-Resolution Data Acquisition Systems**

In the realm of high-resolution data acquisition, the performance of an analog-to-digital converter (ADC) is only as good as the signal presented to its inputs. This is where precision differential drivers like the **LTC6373IDFM#PBF** from Analog Devices become indispensable. This device is engineered specifically to condition real-world signals, ensuring that high-resolution ADCs operate at their peak performance.

The primary role of the LTC6373 is to **convert a single-ended input signal into a balanced, low-noise differential output**, which is the preferred input mode for most high-performance successive approximation register (SAR) and sigma-delta (ΔΣ) ADCs. Single-ended signals are susceptible to noise and common-mode interference, which can severely degrade measurement accuracy. By providing a differential output, the LTC6373 inherently rejects common-mode noise, thereby preserving the integrity of the signal chain.

A standout feature of the LTC6373 is its **exceptional DC precision**. With a typical input offset voltage of just 50 µV and a drift of 0.5 µV/°C, it ensures that even the smallest signals are amplified accurately without significant error over temperature. This is paramount in applications like precision weigh scales, medical instrumentation, and bridge sensor interfaces, where minute voltage changes must be measured with utmost confidence.

Furthermore, the driver boasts **ultra-low harmonic distortion**, typically -120 dB at 1 kHz. This is critical for maintaining the spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR) of the entire system, especially when driving high-resolution ADCs (18-bit and above) in applications such as audio analysis, vibration monitoring, and spectrum analysis. The device's wide bandwidth and fast settling time also make it suitable for multiplexed systems, where it can quickly stabilize after a channel switch to maintain throughput.

Housed in a compact 12-lead DFN package, the LTC6373 offers a flexible gain range from 0.2 to 5 V/V, set by a single external resistor. This allows designers to easily adapt the driver to various sensor outputs and ADC input ranges. Its integrated RFI/EMI filters further enhance robustness in electrically noisy environments.

**ICGOO** In summary, the LTC6373IDFM#PBF is a critical component for unlocking the full potential of high-resolution ADCs. Its combination of **DC precision, low noise, and excellent distortion performance** ensures that the signal entering the converter is pristine, enabling data acquisition systems to achieve unprecedented levels of accuracy and resolution.

**Keywords:** Differential ADC Driver, Precision Amplifier, Low Noise, High-Resolution Data Acquisition, Low Distortion.