Analog Devices Inc. LTC2311IMSE-14#TRPBF

Overview

LTC2311IMSE-14#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5 Msps throughput, ±0.75 LSB typical INL, 80 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 targets high-speed data acquisition in automotive sensor interfaces and optical networking front-ends.

For engineers reviewing the LTC2311IMSE-14#TRPBF datasheet, LTC2311IMSE-14#TRPBF pinout, LTC2311IMSE-14#TRPBF application, or LTC2311IMSE-14#TRPBF equivalent, key selection criteria include guaranteed no-missing-codes operation over –40°C to +85°C, LVDS/CMOS configurable serial interface, 1-cycle latency timing, and 8 V_P-P differential input range with wide common-mode support.

Technical Context

The LTC2311IMSE-14#TRPBF implements a 15-bit SAR architecture delivering 14-bit + sign resolution with two's complement output coding. Its sampling switch network features 15 Ω on-resistance and 10 pF input capacitance, enabling low-distortion acquisition of fast transient signals up to 100 MHz –3 dB bandwidth.

Conversion is initiated by a TTL-compatible CNV pulse; the result appears on SDO within one cycle (200 ns min), supporting deterministic real-time control loops. Internal reference buffer provides 4.096 V ±0.5 mV output with ≤20 ppm/°C drift, while REFIN supports external 1.25 V reference injection when grounded.

Key Specifications

Pinout & Package

Package: 16-lead (4 mm × 5 mm) plastic MSOP with exposed pad (Pin 17), RoHS-compliant, tape-and-reel (#TRPBF).

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-14#TRPBF uniquely integrates a low-drift 4.096 V reference and LVDS/CMOS configurability-reducing BOM count and layout risk-while delivering optimal trade-off of speed, resolution, and power for 5 Msps industrial sensing.

Availability

LTC2311IMSE-14#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking monitoring circuits, and automotive sensor interfaces requiring stable component supply across extended temperature ranges.

Supply support for LTC2311IMSE-14#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2311-14 product line was designed for precision, high-speed data acquisition in thermally demanding environments-emphasizing low-noise performance, guaranteed monotonicity, and integrated reference stability without external components.

FAQ

What is the operating temperature range for the LTC2311IMSE-14#TRPBF?

The LTC2311IMSE-14#TRPBF is rated for –40°C to +85°C (Industrial grade). This specification is guaranteed across all electrical parameters including INL, SNR, and reference accuracy, making it suitable for under-hood automotive and factory-floor industrial deployments where ambient temperatures exceed commercial limits.

Does the LTC2311IMSE-14#TRPBF require an external reference?

No, the LTC2311IMSE-14#TRPBF includes an onboard 4.096 V temperature-compensated reference with ≤20 ppm/°C drift. An external 1.25 V reference may be applied via REFIN only when the internal buffer is disabled by grounding REFIN-otherwise, REFOUT provides a self-contained, calibrated reference source for the LTC2311IMSE-14#TRPBF.

How does the CNV pin function in the LTC2311IMSE-14#TRPBF?

The CNV pin on the LTC2311IMSE-14#TRPBF initiates conversion on its falling edge. During the acquisition phase (CNV high), the internal sampling capacitor connects to AIN+ and AIN–. When CNV falls, the conversion phase begins, and the 15-bit result becomes available on SDO after one cycle (200 ns minimum). This deterministic timing enables precise synchronization with external control logic such as FPGAs in the LTC2311IMSE-14#TRPBF.

Can the LTC2311IMSE-14#TRPBF interface directly with a 1.8 V FPGA I/O bank?

Yes-the LTC2311IMSE-14#TRPBF supports 1.8 V to 2.5 V OVDD, allowing direct connection to 1.8 V FPGA I/O banks in CMOS mode. The SDO and SCK logic levels track OVDD, eliminating level shifters. In LVDS mode, OVDD must be 2.5 V, and differential termination (100 Ω) is required at the FPGA receiver for both SDO± and SCK± pairs in the LTC2311IMSE-14#TRPBF.

What power-saving modes does the LTC2311IMSE-14#TRPBF support?

The LTC2311IMSE-14#TRPBF offers Nap mode (3.5 mA typical at 5 V) and Sleep mode (10 µA typical at 5 V), both entered via CNV timing control. Nap mode retains reference and bias states for fast wake-up (<10 ms REFOUT stabilization); Sleep mode shuts down reference buffer and core logic for ultra-low quiescent current-ideal for battery-powered test instruments between acquisition bursts using the LTC2311IMSE-14#TRPBF.