Analog Devices Inc. LTC1407AIMSE-1#PBF

Overview

LTC1407AIMSE-1#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 3Msps simultaneous-sampling dual-channel ADC with differential inputs, 80dB CMRR at 100kHz, ±1.25V differential input range, and 10μW sleep shutdown mode. It operates from a single 3V supply in a 10-lead MSOP package and targets high-speed portable data acquisition systems requiring precise phase-matched sampling.

For engineers reviewing the LTC1407AIMSE-1#PBF datasheet, LTC1407AIMSE-1#PBF pinout, LTC1407AIMSE-1#PBF application, or LTC1407AIMSE-1#PBF equivalent, key selection criteria include simultaneous dual-channel sampling accuracy, low-power shutdown states, differential input common-mode rejection, internal 2.5V reference stability, and MSOP-10 thermal performance under industrial temperature conditions.

Technical Context

The LTC1407AIMSE-1#PBF implements two independent sample-and-hold circuits synchronized to the rising edge of the CONV signal, enabling true simultaneous acquisition across CH0 and CH1. Each channel converts at 1.5Msps, delivering 14-bit resolution with guaranteed no missing codes over –40°C to +85°C.

Its architecture includes a 2.5V internal bandgap reference with 15ppm/°C tempco, 3-wire serial interface (SCK/CONV/SDO), and timing-critical aperture skew of ≤200ps between channels. The device supports external reference overdrive (2.55V–VDD) and maintains full linear bandwidth of 5MHz with SINAD ≥72.0dB at 100kHz input.

Key Specifications

Pinout & Package

Package: 10-lead plastic MSOP (MSE) with exposed pad (Pin 11 = GND), θ_JA = 40°C/W, TJ_MAX = 125°C. 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 dual-channel simultaneous-sampling ADC applications.

Compared with ADS8327IDRCT and AD7357BRUZ, the LTC1407AIMSE-1#PBF uniquely balances 14-bit resolution, 3Msps aggregate sampling, 10μW sleep mode, and integrated 2.5V reference in a compact MSOP-10-making it optimal for battery-powered, phase-coherent, industrial-grade data loggers.

Availability

LTC1407AIMSE-1#PBF is available at Aetrix Electronics and suitable for telecommunications I/Q demodulation, industrial motor control, and uninterruptible power supply monitoring requiring stable component supply across extended temperature ranges.

Supply support for LTC1407AIMSE-1#PBF 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 precision analog product lines with rigorous automotive and industrial qualification standards.

The LTC1407AIMSE-1#PBF belongs to Linear's high-speed precision ADC family designed for applications demanding simultaneous sampling, low power, and robust noise immunity in harsh electromagnetic environments.

FAQ

What is the operating temperature range for the LTC1407AIMSE-1#PBF?

The LTC1407AIMSE-1#PBF is rated for operation from –40°C to +85°C, meeting industrial temperature requirements. This range is confirmed in the Absolute Maximum Ratings table and applies to all specified dynamic and DC performance parameters unless otherwise noted. The "I" grade designation in the part number explicitly denotes this extended temperature capability.

Does the LTC1407AIMSE-1#PBF support external reference voltage?

Yes, the LTC1407AIMSE-1#PBF supports external reference overdrive on the VREF pin (Pin 3). An external reference voltage between 2.55V and VDD (up to 3.6V) can be applied to improve SNR and reduce reference-related drift. When using an external reference, the internal 2.5V bandgap is disabled, and the external source must supply up to 3mA during conversion.

How does the LTC1407AIMSE-1#PBF enter sleep mode?

The LTC1407AIMSE-1#PBF enters sleep mode when four or more CONV pulses are issued while the SCK signal is held in a fixed high or low state. In sleep mode, supply current drops to 2.0μA and power dissipation falls to 10μW. Wake-up occurs on the first SCK edge, with VREF settling fully within 2ms as specified in Note 14.

What is the significance of the exposed pad (Pin 11) on the LTC1407AIMSE-1#PBF?

The exposed pad (Pin 11) on the LTC1407AIMSE-1#PBF is electrically connected to GND and serves as the primary thermal and electrical ground path. It must be soldered directly to a solid PCB ground plane to achieve the specified θ_JA = 40°C/W and maintain 72dB SINAD performance. Failure to connect the pad degrades thermal dissipation and increases noise susceptibility.

Can the LTC1407AIMSE-1#PBF interface directly with an FPGA SPI controller?

Yes, the LTC1407AIMSE-1#PBF interfaces directly with standard FPGA SPI controllers using its 3-wire serial interface (SCK, CONV, SDO). The device outputs 14-bit 2's complement data for both channels in a fixed 32-clock frame, with data valid on the rising edge of SCK. No level-shifting or protocol translation is required for 3V FPGA I/O banks.