Analog Devices Inc. LTC2311IMSE-12#TRPBF

Overview

LTC2311IMSE-12#TRPBF from Analog Devices (acquired Linear Technology) is a 12-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5 Msps throughput, ±0.25 LSB typical INL, 73 dB SNR at 2.2 MHz, and integrated 4.096 V temperature-compensated reference. It operates from a single 3.3 V or 5 V supply and delivers 8 V_P-P differential input range with guaranteed no missing codes - ideal for high-dynamic-range data acquisition in harsh industrial environments.

For engineers reviewing the LTC2311IMSE-12#TRPBF datasheet, LTC2311IMSE-12#TRPBF pinout, LTC2311IMSE-12#TRPBF application, or LTC2311IMSE-12#TRPBF equivalent, key selection criteria include its wide common-mode input range (0 V to V_DD), CMOS/LVDS SPI-compatible interface, –40°C to 85°C operating temperature grade, 16-lead MSOP package, and low-power nap/sleep modes supporting battery-aware embedded systems.

Technical Context

The LTC2311IMSE-12#TRPBF implements a 13-bit SAR architecture with two-phase operation: acquisition (sample capacitor connected to AIN+/AIN–) followed by conversion (binary-weighted CDAC comparison against REFOUT). Its differential front-end supports fully differential, pseudo-differential bipolar/unipolar, and single-ended inputs without configuration, leveraging 85 dB CMRR at 2.2 MHz.

It features dual-reference capability: internal 4.096 V (or 2.048 V) buffered reference with ≤20 ppm/°C drift, plus external 1.25 V REFIN input enabling precision external reference use. The CMOS/LVDS I/O mode select (Pin 10) allows flexible host interfacing - LVDS for noise immunity in high-speed FPGA links, CMOS for low-cost microcontroller integration.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (4 mm × 5 mm), exposed pad (Pin 17) required to be soldered to 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 AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2311IMSE-12#TRPBF uniquely balances 12-bit precision, 5 Msps speed, integrated 4.096 V reference, and dual-mode I/O in a compact MSOP - making it optimal for space-constrained, medium-resolution, high-throughput industrial DAQ where reference integration and interface flexibility reduce design risk.

Availability

LTC2311IMSE-12#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking modules, and remote industrial sensor nodes requiring stable component supply across extended temperature ranges.

Supply support for LTC2311IMSE-12#TRPBF 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 LTC2311-12 product line was developed by Linear Technology (acquired by ADI in 2017) to deliver high-speed, low-noise SAR ADCs with integrated references and flexible digital interfaces for demanding embedded data acquisition applications.

FAQ

What is the operating temperature range of the LTC2311IMSE-12#TRPBF?

The LTC2311IMSE-12#TRPBF is rated for operation from –40°C to +85°C (Industrial grade), validated per the LTC2311I temperature specification. This range supports deployment in industrial control cabinets, outdoor telecom infrastructure, and automotive under-hood monitoring systems where ambient temperatures exceed commercial limits.

Does the LTC2311IMSE-12#TRPBF require an external reference?

No, the LTC2311IMSE-12#TRPBF includes an onboard low-drift 4.096 V (or 2.048 V) temperature-compensated reference buffer. External reference use is optional via the REFIN pin - grounding REFIN disables the internal REFOUT buffer, allowing an external 1.25 V reference to drive REFOUT directly.

How does the CMOS/LVDS pin (Pin 10) affect interface configuration for the LTC2311IMSE-12#TRPBF?

Pin 10 (CMOS/LVDS) selects the serial interface standard: grounded for CMOS mode (single-ended SDO+/SCK+), tied to OVDD for LVDS mode (differential SDO+/SDO–, SCK+/SCK–), or left floating for low-power LVDS. This eliminates hardware redesign when migrating between noise-sensitive (LVDS) and cost-sensitive (CMOS) host platforms.

What power savings does the LTC2311IMSE-12#TRPBF offer in low-duty-cycle applications?

In sleep mode, the LTC2311IMSE-12#TRPBF draws just 0.1 µA at 3.3 V - reducing average power by >99.9% versus active operation. Combined with one-cycle latency, this enables microsecond-scale wake-and-sample sequences ideal for battery-powered condition monitoring where measurements occur every seconds or minutes.

Can the LTC2311IMSE-12#TRPBF digitize single-ended signals without external circuitry?

Yes - the LTC2311IMSE-12#TRPBF supports pseudo-differential unipolar (e.g., AIN+ = signal, AIN– = GND) and bipolar (e.g., AIN+ = signal, AIN– = V_REF/2) configurations natively. Its 0 V to V_DD common-mode range and no-missing-codes guarantee allow direct connection to single-ended sources while preserving DC accuracy and dynamic range.