Analog Devices Inc. LTC2387IUH-16#PBF

Overview

LTC2387IUH-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 15 Msps successive approximation register (SAR) analog-to-digital converter with serial LVDS interface, ±0.8 LSB INL (max), 93.8 dB SNR (typ at 1 MHz), and 8.192 V_P-P differential input range. It operates from 5 V and dual 2.5 V supplies, features an internal 2.048 V reference with ±20 ppm/°C tempco, and targets high-speed imaging, instrumentation, and closed-loop control systems requiring no pipeline latency.

For engineers reviewing the LTC2387IUH-16#PBF datasheet, LTC2387IUH-16#PBF pinout, LTC2387IUH-16#PBF application, or LTC2387IUH-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, LVDS one/two-lane mode flexibility, Nyquist sampling up to 7.5 MHz, 125 mW power dissipation at full rate, and –40°C to +85°C industrial temperature grade.

Technical Context

The LTC2387IUH-16#PBF implements a true SAR architecture-no pipeline delay, zero cycle latency-enabling deterministic timing for real-time control loops. Its differential input stage accepts ±4.096 V full-scale swing with 200 MHz –3 dB bandwidth and 75 dB CMRR at 1 MHz, supporting high-fidelity signal capture in wide-dynamic-range applications.

Conversion is initiated by LVDS or CMOS-compatible CNV+ edge; data is serialized via LVDS outputs (DA+/DA–, DB+/DB–) with DCO± clock echo. The internal 2× reference buffer delivers 4.096 V (±0.15 LSB FSE) and supports external overdrive, while REFIN provides a buffered 2.048 V output with ±5 ppm/°C typical tempco.

Key Specifications

Pinout & Package

Package: 32-lead (5 mm × 5 mm) plastic QFN (UH package) with exposed pad (Pin 33) soldered to PCB ground plane. Thermal resistance θ_JA = 34°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed SAR ADC applications.

Compared with ADS8860IRGET and AD9265BCPZ-125, the LTC2387IUH-16#PBF uniquely balances 15 Msps throughput, zero-latency SAR operation, integrated reference, and LVDS EMI resilience - making it optimal for industrial control, portable test gear, and medium-bandwidth communications where timing determinism and design simplicity are prioritized.

Availability

LTC2387IUH-16#PBF is available at Aetrix Electronics and suitable for high-speed imaging, industrial instrumentation, and real-time control loop applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2387IUH-16#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2387IUH-16#PBF belongs to ADI's high-speed precision SAR ADC product line, engineered specifically for applications demanding both resolution and speed without pipeline latency - such as medical ultrasound, automated test equipment, and servo-driven motion control.

FAQ

What is the operating temperature range of the LTC2387IUH-16#PBF?

The LTC2387IUH-16#PBF is rated for industrial operation from –40°C to +85°C. This is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the datasheet, where all "l"-denoted specifications (including INL, SNR, and reference accuracy) apply across this full range. The "I" grade designation in the part number explicitly indicates this extended temperature capability.

Does the LTC2387IUH-16#PBF require an external reference?

No, the LTC2387IUH-16#PBF includes a precision internal 2.048 V bandgap reference with ±0.25% initial accuracy and ±20 ppm/°C max temperature coefficient. Its buffered 4.096 V output (REFBUF) is fully functional for most applications. An external reference may be applied to REFIN only if higher initial accuracy or lower drift is required - the internal reference remains active unless REFIN is tied to GND to power down the buffer.

How does the LVDS interface of the LTC2387IUH-16#PBF operate in one-lane versus two-lane mode?

In one-lane mode (TWOLANES = low), the LTC2387IUH-16#PBF outputs 16 bits sequentially on DA+/DA– at 15 MHz × 16 = 240 Mbps. In two-lane mode (TWOLANES = high), it outputs 8-bit words on DA+/DA– and DB+/DB– simultaneously at 15 MHz × 8 = 120 Mbps per lane. This halves the required data rate per differential pair, easing PCB routing and reducing jitter sensitivity in high-density layouts.

What is the significance of "no pipeline delay" in the LTC2387IUH-16#PBF?

"No pipeline delay" means the LTC2387IUH-16#PBF uses a pure successive approximation register (SAR) architecture - not a pipelined or sigma-delta converter. Conversion completes deterministically within 58 ns after CNV edge (t_CONV), with no queued samples. This enables immediate use of results in time-critical feedback loops, unlike pipelined ADCs that introduce fixed latency (e.g., 10+ clocks), which degrades control loop phase margin.

Can the LTC2387IUH-16#PBF be powered from a single 3.3 V supply?

No. The LTC2387IUH-16#PBF requires three separate supplies: VDD = 4.75–5.25 V (analog core), VDDL = 2.375–2.625 V (digital logic), and OVDD = 2.375–2.625 V (LVDS output drivers). These are not internally regulated - each rail must be supplied externally. Using 3.3 V on VDD violates absolute maximum ratings and will damage the device.