Analog Devices Inc. LTC1403AHMSE#TRPBF

Overview

LTC1403AHMSE#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 2.8 Msps serial analog-to-digital converter with differential inputs, 3V single-supply operation, and –40°C to +125°C extended temperature range. It delivers 73.5 dB SINAD at 1.4 MHz input, 80 dB CMRR, and ultra-low 10 µW Sleep mode power. Designed for high-speed portable instrumentation and automotive sensor interfaces where precision, thermal robustness, and low power coexist.

For engineers reviewing the LTC1403AHMSE#TRPBF datasheet, LTC1403AHMSE#TRPBF pinout, LTC1403AHMSE#TRPBF application, or LTC1403AHMSE#TRPBF equivalent, key selection criteria include guaranteed 14-bit no-missing-codes performance over full temperature range, 39 ns acquisition time, internal 2.5 V reference with ±15 ppm/°C tempco, and MSOP-10 package compatibility with space-constrained industrial control PCBs.

Technical Context

The LTC1403AHMSE#TRPBF employs a fully differential sample-and-hold architecture that accepts 0 V to 2.5 V unipolar differential inputs while supporting common-mode voltages from ground to VDD. Its timing logic synchronizes conversion start (CONV↑) with a 16-cycle serial output window aligned to SCK rising edges, enabling deterministic 2.8 Msps throughput with a 50.4 MHz clock.

It integrates a factory-trimmed 2.5 V bandgap reference (±15 ppm/°C), supports external reference overdrive (2.55 V to VDD), and features three power states: Active (5.2 mA), Nap (1.2 mA), and Sleep (10 µA). The 13 pF analog input capacitance and 1 ns aperture delay are tightly specified across –40°C to +125°C.

Key Specifications

Pinout & Package

Package: 10-lead plastic MSOP (MSE) with exposed pad (Pin 11), JEDEC MO-187 variant, 3 mm × 3 mm footprint, 0.5 mm pitch. Exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8860IRGET and MAX11198ETE+, the LTC1403AHMSE#TRPBF uniquely balances 2.8 Msps throughput, 14-bit integrity over full automotive temperature range, and integrated 2.5 V reference-making it optimal for thermally demanding, high-dynamic-range embedded data acquisition where board area and BOM count are constrained.

Availability

LTC1403AHMSE#TRPBF is available at Aetrix Electronics and suitable for automotive engine control, industrial motor phase sensing, portable medical ultrasound, and aerospace power system monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC1403AHMSE#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, formed through the acquisition of Linear Technology in 2017.

The LTC1403AHMSE#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, engineered specifically for high-speed, low-power, thermally rugged applications in automotive, industrial, and medical instrumentation.

FAQ

What is the guaranteed operating temperature range for the LTC1403AHMSE#TRPBF?

The LTC1403AHMSE#TRPBF is fully specified and guaranteed over –40°C to +125°C ambient temperature. This H-grade qualification includes all key parameters-such as 14-bit no-missing-codes performance, 73.5 dB SINAD at 1.4 MHz, and 80 dB CMRR-validated across the full range, making LTC1403AHMSE#TRPBF suitable for under-hood automotive and industrial control environments.

Does the LTC1403AHMSE#TRPBF require an external reference, or does it have an internal one?

The LTC1403AHMSE#TRPBF integrates a factory-trimmed 2.5 V bandgap reference accessible at Pin 3 (VREF), eliminating the need for an external reference in most applications. It supports overdrive with an external 2.55 V–VDD reference if higher accuracy or different span is required. The internal reference exhibits ±15 ppm/°C tempco and settles in 2 ms after Sleep-mode wake-up, ensuring stable operation in cyclic power schemes.

How many pins does the LTC1403AHMSE#TRPBF use, and what is its package type?

The LTC1403AHMSE#TRPBF uses a 10-lead plastic MSOP (MSE) package with an exposed thermal pad (Pin 11). The package measures 3 mm × 3 mm with 0.5 mm lead pitch. All three GND pins (Pins 4, 5, and 6) and the exposed pad must be soldered to a solid PCB ground plane to ensure proper thermal dissipation (θ_JA = 40°C/W) and low-noise analog performance.

Can the LTC1403AHMSE#TRPBF interface directly with a standard SPI controller?

Yes-the LTC1403AHMSE#TRPBF uses a 3-wire serial interface (SCK, CONV, SDO) compatible with SPI timing conventions. It outputs 14-bit LSB-first data on SDO during 16 SCK rising edges following each CONV↑ edge. No CS/SS pin is required; SDO enters Hi-Z state automatically between conversions, allowing multiple devices on a shared bus when coordinated by external logic.

What power-saving modes does the LTC1403AHMSE#TRPBF support, and how are they activated?

The LTC1403AHMSE#TRPBF supports two low-power states: Nap mode (1.2 mA) and Sleep mode (10 µA). Both are entered by applying specific pulse counts to the CONV pin while holding SCK static (high or low). Two CONV pulses trigger Nap; four or more trigger Sleep. Wake-up occurs on the first SCK edge, with VREF settling fully within 2 ms-enabling rapid resumption of high-speed sampling in duty-cycled systems using LTC1403AHMSE#TRPBF.