Analog Devices Inc. LTC1403IMSE#TRPBF

Overview

LTC1403IMSE#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, 80 dB common-mode rejection, and Sleep mode consuming only 10 µW - designed for high-speed portable data acquisition in automotive and communications systems.

For engineers reviewing the LTC1403IMSE#TRPBF datasheet, LTC1403IMSE#TRPBF pinout, LTC1403IMSE#TRPBF application, or LTC1403IMSE#TRPBF equivalent, key selection criteria include guaranteed –40°C to +85°C operation, 10-lead MSOP package with exposed pad, 0V–2.5V unipolar differential input range, and 3-wire serial interface timing compatibility with microcontroller SPI peripherals.

Technical Context

The LTC1403IMSE#TRPBF implements a fully differential sample-and-hold front-end paired with a successive-approximation register (SAR) ADC core, enabling simultaneous sampling of AIN+ and AIN– with 1 ns aperture delay and 0.3 ps jitter. Its internal 2.5 V bandgap reference supports overdrive by external references from 2.55 V to VDD.

Conversion is triggered on the rising edge of CONV; 14-bit output data appears on SDO over 16 SCK cycles, with full 2.8 Msps throughput achievable using a 50.4 MHz clock and two additional acquisition cycles between conversions.

Key Specifications

Pinout & Package

Package: 10-lead plastic MSOP (MSE) with exposed thermal pad (Pin 11), 3 mm × 3 mm footprint, JEDEC MO-187AC compliant. Exposed pad must 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 ADS8326IDRCT and MAX1190ETE+, the LTC1403IMSE#TRPBF uniquely combines 2.8 Msps speed, 80 dB CMRR, and 10 µW Sleep in a 10-lead MSOP - making it optimal for space-constrained, battery-operated, noise-immune data acquisition where both dynamic performance and ultra-low quiescent power are mandatory.

Availability

LTC1403IMSE#TRPBF is available at Aetrix Electronics and suitable for automotive battery management, industrial motor control, portable medical imaging, and communications baseband digitization requiring stable component supply across extended temperature ranges.

Supply support for LTC1403IMSE#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 LTC1403 series belongs to ADI's precision high-speed data acquisition product line, engineered specifically for portable and thermally constrained systems demanding low power, small footprint, and robust noise immunity without sacrificing sampling rate or resolution.

FAQ

What is the guaranteed operating temperature range for the LTC1403IMSE#TRPBF?

The LTC1403IMSE#TRPBF is specified for continuous operation from –40°C to +85°C, meeting industrial and automotive under-hood requirements. This grade is confirmed in the official Linear Technology (now Analog Devices) order information table, where "I" suffix denotes the –40°C to +85°C range, and the MSE package variant LTC1403IMSE#TRPBF is explicitly listed with that temperature rating.

Does the LTC1403IMSE#TRPBF support differential input operation, and what is its common-mode rejection ratio?

Yes, the LTC1403IMSE#TRPBF features fully differential analog inputs (AIN+ and AIN–) with 80 dB common-mode rejection ratio at 1 MHz, as specified in the Dynamic Accuracy section of the datasheet. This allows direct measurement of signals referenced to noisy grounds - critical for motor current sensing and battery cell monitoring where ground loops introduce significant interference.

What is the power consumption of the LTC1403IMSE#TRPBF in active and Sleep modes?

The LTC1403IMSE#TRPBF draws 4.7 mA typical from a 3 V supply in active mode (14 mW), and reduces to just 10 µW in Sleep mode - achieved by asserting four or more CONV pulses while holding SCK static. This dual-mode capability is documented in the Power Requirements table and Sleep Mode Waveforms section of the datasheet.

Can the internal 2.5 V reference of the LTC1403IMSE#TRPBF be overdriven, and what is the acceptable external reference voltage range?

Yes, the LTC1403IMSE#TRPBF's internal 2.5 V reference (VREF pin) can be overdriven by an external source. The datasheet specifies a safe overdrive range of 2.55 V to VDD (max 3.6 V), with load current up to 3 mA during conversion. This enables use of higher-accuracy external references to improve overall system INL and gain stability.

What package type and pin count does the LTC1403IMSE#TRPBF use, and is thermal management required?

The LTC1403IMSE#TRPBF uses a 10-lead plastic MSOP (MSE) package with an exposed thermal pad (Pin 11). Per the Absolute Maximum Ratings and Package Description tables, this pad must be soldered to the PCB ground plane to maintain junction temperature below 150°C - achieving θ_JA = 40°C/W and ensuring reliable operation at full 2.8 Msps throughput.