Analog Devices Inc. LTC1403IMSE-1#TRPBF

Overview

LTC1403IMSE-1#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, ±1.25V bipolar input range, and integrated 2.5V bandgap reference. It delivers 73.5 dB SINAD at 100 kHz and supports high-speed portable data acquisition in motor control and communications systems.

For engineers reviewing the LTC1403IMSE-1#TRPBF datasheet, LTC1403IMSE-1#TRPBF pinout, LTC1403IMSE-1#TRPBF application, or LTC1403IMSE-1#TRPBF equivalent, key selection criteria include its 2.8 Msps sampling rate, 14-bit resolution with no missing codes, 80 dB CMRR, Sleep mode (10 µW), and 10-lead MSE package compatibility with space-constrained PCB layouts.

Technical Context

The LTC1403IMSE-1#TRPBF employs a fully differential sample-and-hold architecture with aperture jitter of 0.3 ps and acquisition time of 39 ns, enabling accurate high-frequency signal capture. Its internal 2.5V reference is factory-trimmed and overdrivable with external references from 2.55V to VDD.

It uses a 3-wire serial interface (CONV, SCK, SDO) with 2's complement output format, requiring 16 clock cycles per conversion. Full 2.8 Msps throughput is achieved with a 50.4 MHz SCK when allowing two extra clock cycles for acquisition between conversions.

Key Specifications

Pinout & Package

Package: 10-lead plastic MSOP (MSE), exposed pad (Pin 11) 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 ADC applications.

Compared with ADS8326IDRCT and MAX1190ECM+T, the LTC1403IMSE-1#TRPBF uniquely balances 2.8 Msps throughput, 14-bit linearity, ultra-low Sleep power (10 µW), and miniature MSE packaging - making it optimal for size- and power-constrained high-speed embedded systems.

Availability

LTC1403IMSE-1#TRPBF is available at Aetrix Electronics and suitable for multiphase motor control, uninterruptible power supplies, and portable data acquisition systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LTC1403IMSE-1#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 acquired Linear Technology in 2017 and maintains its high-performance analog product lines, including precision data converters, with global manufacturing and quality certifications (ISO 9001, IATF 16949).

The LTC1403IMSE-1#TRPBF belongs to Linear's legacy high-speed serial ADC family, designed specifically for portable, low-power, and noise-immune signal acquisition in industrial and communications equipment.

FAQ

What is the operating temperature range for LTC1403IMSE-1#TRPBF?

The LTC1403IMSE-1#TRPBF is rated for –40°C to +85°C operation, as indicated by the "I" grade suffix in its part number. This extended industrial temperature range ensures reliable performance in motor drives, UPS systems, and outdoor instrumentation where ambient conditions vary widely. The device maintains full specification compliance-including 2.8 Msps sampling rate and 73.5 dB SINAD-across this entire range.

Does LTC1403IMSE-1#TRPBF support external reference voltage?

Yes, the LTC1403IMSE-1#TRPBF supports external reference voltage via the VREF pin (Pin 3). An external reference between 2.55V and VDD can overdrive the internal 2.5V bandgap reference, enabling improved full-scale accuracy or system-level reference synchronization. When using an external reference, the internal reference amplifier is disabled, and the ADC's differential input span becomes ±(VREF/2), preserving 14-bit linearity.

How does the Sleep mode of LTC1403IMSE-1#TRPBF activate and recover?

Sleep mode (10 µW) on the LTC1403IMSE-1#TRPBF is activated by applying four or more CONV pulses while SCK is held fixed high or low. Recovery requires one SCK pulse after CONV returns to idle; the internal reference settles in 2 ms (with 10 µF bypass cap), after which valid conversions resume. This controlled wake-up sequence ensures predictable timing in low-duty-cycle sampling applications.

What is the significance of the "MSE" package designation in LTC1403IMSE-1#TRPBF?

The "MSE" in LTC1403IMSE-1#TRPBF denotes a 10-lead plastic MSOP (Mini Small Outline Package) with an exposed thermal pad (Pin 11). This package provides superior thermal dissipation (θJA = 40°C/W) and low inductance grounding versus standard MSOP, critical for maintaining SNR and THD performance at 2.8 Msps. The exposed pad must be soldered to a solid PCB ground plane per Linear's layout guidelines.

Can LTC1403IMSE-1#TRPBF interface directly with an FPGA's I/O bank?

Yes, the LTC1403IMSE-1#TRPBF is compatible with FPGA I/O banks operating at 3.0V or 3.3V. Its digital inputs (CONV, SCK) accept TTL/3V CMOS logic levels (VIH ≥ 2.4V, VIL ≤ 0.6V), and its SDO output drives VOH ≥ 2.5V and VOL ≤ 0.1V under 200 µA load - meeting standard LVCMOS33 requirements. No level-shifting is needed when interfacing with Xilinx Artix-7 or Intel Cyclone V I/O banks configured for 3.3V operation.