LTC2387IUH-18#PBF

Overview

The LTC2387IUH-18#PBF is an 18-bit, 15Msps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates within an industrial temperature range of –40°C to 85°C and utilizes a 32-lead (5mm × 5mm) plastic QFN package. The device features a serial LVDS digital interface with configurable one-lane or two-lane output modes to optimize data rates. Key electrical specifications include a typical signal-to-noise ratio (SNR) of 95.7dB at a 1MHz input frequency, a maximum integral nonlinearity (INL) of ±3LSB, and a power dissipation of 125mW at full throughput. It requires 5V and 2.5V supply rails.

Feature Summary

• 18-bit resolution with guaranteed no missing codes and 15Msps throughput rate
• Serial LVDS interface supporting single-channel and dual-channel output modes
• Internal precision reference with ±20ppm/°C maximum temperature coefficient
• Low power consumption of 125mW with a dedicated power-down mode

Applications

• High-speed data acquisition systems
• Imaging applications including CCD and CMOS sensors
• Instrumentation requiring wide dynamic range
• High-speed control loops due to zero pipeline latency
• Automated test equipment (ATE)

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm the 'I' grade designation matches the required –40°C to 85°C operating temperature range for the target environment. Ensure the QFN-32 footprint aligns with PCB layout capabilities before ordering.

Selection Notes

Select this component for applications demanding high linearity and low noise at 15Msps. The internal reference buffer simplifies design if external references are not required. Consider the two-lane LVDS mode if reducing trace count is critical, noting the associated increase in OVDD current. Verify that the 8.192Vp-p differential input range matches the signal source amplitude.

Part Context

This part belongs to the LTC2387 family of SAR ADCs, which includes variants with different resolutions and sampling rates such as the LTC2386 and LTC2387-16. The 'I' suffix denotes the industrial temperature grade, while 'UH' specifies the 32-lead QFN package. The '#PBF' suffix identifies the lead-free finish and tube shipping configuration.

Replacement Considerations

The LTC2387CUH-18#PBF serves as a commercial grade alternative with a 0°C to 70°C operating range. For tape and reel packaging options, the LTC2387IUH-18#TRPBF is available from designated sales channels.