Analog Devices Inc. LTC2310CMSE-14#PBF

Overview

LTC2310CMSE-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 2 Msps throughput, ±2.5 LSB INL guaranteed, 82 dB SNR typical at 500 kHz, and wide 0 V to VDD common mode input range. It operates from a single 3.3 V or 5 V supply and integrates a low-drift 4.096 V internal reference - ideal for high-speed data acquisition in automotive sensor interfaces and optical networking front-ends.

For engineers reviewing the LTC2310CMSE-14#PBF datasheet, LTC2310CMSE-14#PBF pinout, LTC2310CMSE-14#PBF application, or LTC2310CMSE-14#PBF equivalent, key selection considerations include its no-cycle-latency serial interface (CMOS/LVDS configurable), 16-lead MSOP package with exposed ground pad, guaranteed operation from 0°C to 70°C, and support for both internal reference (4.096 V) and external 1.25 V buffered reference input.

Technical Context

The LTC2310CMSE-14#PBF implements a 15-bit SAR architecture with differential sampling switch and on-chip CDAC, achieving 82 dB SNR and –93 dB THD at f_IN = 500 kHz using its internal 4.096 V reference. Its timing logic initiates conversion on CNV falling edge, completes conversion in 220 ns, and outputs 15-bit 2's complement data MSB-first on SDO with no pipeline latency.

It supports dual I/O modes: CMOS (OVDD = 1.8 V/2.5 V) and LVDS (differential SCK/SDO, 100 Ω termination), selectable via the CMOS/LVDS pin. Internal reference drift is ≤20 ppm/°C over –40°C to 125°C, and analog input common mode rejection exceeds 85 dB at 2.2 MHz.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (4 mm × 5 mm), exposed pad (Pin 17) required to be soldered to PCB ground plane for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8860IRGET and AD7960BCPZ, the LTC2310CMSE-14#PBF uniquely balances 2 Msps speed, integrated 4.096 V reference, CMOS/LVDS flexibility, and 0 V to VDD common mode range - making it optimal for space-constrained, mixed-signal systems requiring rapid deployment without reference or interface redesign.

Availability

LTC2310CMSE-14#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking modules, and automotive sensor interfaces requiring stable component supply and guaranteed 0°C to 70°C operation.

Supply support for LTC2310CMSE-14#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 LTC2310-14 product line delivers high-speed, low-noise SAR ADCs optimized for applications demanding deterministic latency, integrated references, and robust noise immunity - including test equipment, medical imaging, and real-time control systems.

FAQ

What is the guaranteed operating temperature range for the LTC2310CMSE-14#PBF?

The LTC2310CMSE-14#PBF is rated for 0°C to 70°C operation (Commercial grade). This is confirmed by the "C" suffix in the part number and the order information table specifying "LTC2310CMSE-14#PBF" with temperature range "0°C to 70°C". The device meets all electrical specifications across this full range, including ±2.5 LSB INL and 82 dB SNR minimum.

Does the LTC2310CMSE-14#PBF require an external reference, or does it include one?

The LTC2310CMSE-14#PBF includes an onboard low-drift 4.096 V temperature-compensated reference buffer (REFOUT, Pin 3) with ≤20 ppm/°C drift. It also provides a 1.25 V buffered reference output (REFIN, Pin 2) that can be overdriven to disable the internal REFOUT buffer and accept an external reference. No external reference is required for standard operation.

Can the LTC2310CMSE-14#PBF interface directly with a 1.8 V FPGA I/O bank?

Yes. The LTC2310CMSE-14#PBF supports OVDD = 1.71 V to 2.5 V, making it fully compatible with 1.8 V FPGA I/O banks in CMOS mode. The SDO output and SCK input levels are referenced to OVDD, and VIH/VIL thresholds scale accordingly (e.g., VIH = 0.8 × OVDD ≈ 1.44 V at 1.8 V). LVDS mode also supports 2.5 V OVDD.

What is the purpose of the exposed pad (Pin 17) on the LTC2310CMSE-14#PBF?

The exposed pad (Pin 17) on the LTC2310CMSE-14#PBF is electrically connected to GND and must be soldered to a solid PCB ground plane. It serves dual purposes: improving thermal dissipation (θ_JA = 40°C/W) and reducing ground impedance for analog and digital sections - critical for maintaining 82 dB SNR and minimizing digital switching noise coupling into the ADC core.

How does the CMOS/LVDS pin (Pin 10) configure the serial interface of the LTC2310CMSE-14#PBF?

The CMOS/LVDS pin (Pin 10) selects the serial interface mode: grounded → CMOS mode (single-ended SDO+/SCK+); tied to OVDD → LVDS mode (differential SDO+/SDO–, SCK+/SCK–); left floating → low-power LVDS mode. This pin determines driver topology, termination requirements, and power consumption - enabling optimization for noise immunity (LVDS) or board-level simplicity (CMOS).