Analog Devices Inc. LTC2311IMSE-16#PBF

Overview

LTC2311IMSE-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 5 Msps successive approximation register (SAR) analog-to-digital converter with differential inputs, ±3 LSB typical INL, 81 dB SNR at 2.2 MHz, and wide 0 V to VDD common mode input range. It operates from a single 3.3 V or 5 V supply, integrates a low-drift 4.096 V internal reference, and supports CMOS or LVDS serial interface - ideal for high-speed data acquisition in industrial and automotive systems.

For engineers reviewing the LTC2311IMSE-16#PBF datasheet, LTC2311IMSE-16#PBF pinout, LTC2311IMSE-16#PBF application, or LTC2311IMSE-16#PBF equivalent, key selection criteria include guaranteed no-missing-codes operation over –40°C to +85°C, 1-cycle latency timing, 50 mW power dissipation at 5 V, and configurable I/O voltage support (1.8 V to 2.5 V).

Technical Context

The LTC2311IMSE-16#PBF implements a fully differential SAR architecture with integrated sample-and-hold, 100 MHz –3 dB input bandwidth, and aperture jitter of 1 ps RMS. Its dual-mode digital interface (CMOS or LVDS) is selected via the CMOS/LVDS pin, enabling direct FPGA or ASIC interfacing without level-shifting.

It features an on-chip 4.096 V temperature-compensated reference (20 ppm/°C max drift), buffered 1.25 V REFIN input, and supports external reference injection by grounding REFIN. Conversion is initiated by a TTL-compatible CNV pulse, with output data clocked MSB-first on SCK falling edges.

Key Specifications

Pinout & Package

Package: 16-lead (4 mm × 5 mm) plastic MSOP with exposed pad (Pin 17), RoHS-compliant, lead-free finish.

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 LTC2311IMSE-16#PBF uniquely combines 5 Msps throughput, integrated 4.096 V reference, dual-mode CMOS/LVDS I/O, and –40°C to +85°C operation - reducing system-level design effort while maintaining high dynamic performance.

Availability

LTC2311IMSE-16#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 across extended temperature ranges.

Supply support for LTC2311IMSE-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 LTC2311-16 product line delivers high-speed, high-accuracy SAR ADCs optimized for applications demanding low latency, excellent AC performance, and robust operation in harsh environments - including motor control, instrumentation, and optical infrastructure.

FAQ

What is the guaranteed operating temperature range for the LTC2311IMSE-16#PBF?

The LTC2311IMSE-16#PBF is specified for continuous operation from –40°C to +85°C, making it suitable for industrial and automotive under-hood applications. This grade is confirmed in the manufacturer's ordering information table and absolute maximum ratings section, where "I" suffix denotes the industrial temperature range.

Does the LTC2311IMSE-16#PBF require an external reference, or does it include an internal one?

The LTC2311IMSE-16#PBF includes an onboard low-drift 4.096 V temperature-compensated reference (20 ppm/°C max). It also provides a buffered 1.25 V REFIN pin that can be grounded to disable the internal REFOUT buffer and accept an external reference - offering flexibility without mandatory external components.

How does the CMOS/LVDS pin (Pin 10) configure the digital interface of the LTC2311IMSE-16#PBF?

The CMOS/LVDS pin (Pin 10) selects interface mode: grounding enables CMOS I/O (single-ended SDO/SCK), tying to OVDD enables LVDS (differential SDO+/SDO– and SCK+/SCK–), and leaving it floating activates low-power LVDS mode. This hardware-selectable feature eliminates firmware configuration overhead and external mode-control logic.

What is the power consumption of the LTC2311IMSE-16#PBF during active sampling at 5 Msps?

At V_DD = 5 V and 5 Msps sampling rate, the LTC2311IMSE-16#PBF dissipates 45–65 mW (typical 50 mW). In CMOS mode, total supply current is ~12 mA (IVDD) + ~1.75 mA (IOVDD); in LVDS mode, it rises to ~12 mA (IVDD) + ~4.5 mA (IOVDD), reflecting higher interface drive strength.

Can the LTC2311IMSE-16#PBF digitize single-ended signals without external circuitry?

Yes - the LTC2311IMSE-16#PBF supports pseudo-differential unipolar and bipolar configurations natively. For single-ended signals, tie AIN– to a stable reference (e.g., ground or V_REF/2) and apply the signal to AIN+. No external op-amps or configuration registers are needed, leveraging its wide 0 V to VDD common mode range.