Analog Devices Inc. LTC1407HMSE#PBF

Overview

LTC1407HMSE#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 3Msps simultaneous-sampling dual-channel ADC with two fully differential inputs, 80dB CMRR at 100kHz, 1.5Msps per channel throughput, and operation over –40°C to +125°C. It features an internal 2.5V bandgap reference, 3-wire serial interface, and Sleep mode consuming only 10μW - ideal for high-speed industrial motor control and I/Q demodulation in harsh-temperature environments.

For engineers reviewing the LTC1407HMSE#PBF datasheet, LTC1407HMSE#PBF pinout, LTC1407HMSE#PBF application, or LTC1407HMSE#PBF equivalent, this page delivers verified specifications, validated pin functions, real-world timing constraints (e.g., 39ns acquisition time, 200ps inter-channel skew), and direct alternative part comparisons - all grounded in the official LTC1407/LTC1407A datasheet Rev. FB.

Technical Context

The LTC1407HMSE#PBF implements two independent sample-and-hold circuits sampled simultaneously on the rising edge of CONV, followed by interleaved 14-bit successive-approximation conversions at 1.5Msps per channel. Its architecture supports unipolar 0V–2.5V differential input range referenced to internal VREF or external ≥2.55V sources.

It uses a 3-wire serial interface (SCK, CONV, SDO) where each conversion yields two 14-bit words output in 32 clock cycles. Timing-critical parameters include 39ns acquisition time, 200ps aperture skew between CH0/CH1, and 2ms VREF settling after wake-up from Sleep mode - all guaranteed across the full –40°C to +125°C operating range.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (MSE), exposed pad (Pin 11) tied to GND - requires soldering to PCB thermal pad for thermal dissipation (θJA = 40°C/W) and noise immunity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel simultaneous-sampling ADC applications.

Compared with ADS8860IDRCT and AD7357BRUZ, the LTC1407HMSE#PBF uniquely balances 14-bit resolution, true simultaneous sampling, ultra-low Sleep power (10μW), and extended temperature operation in a compact 10-lead MSOP - making it optimal for thermally demanding, battery-aware industrial edge nodes.

Availability

LTC1407HMSE#PBF is available at Aetrix Electronics and suitable for industrial motor control, uninterruptible power supplies, and portable data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC1407HMSE#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 full technical and manufacturing continuity for legacy Linear ICs including the LTC1407 family.

The LTC1407 series was designed specifically for high-speed, low-power, simultaneous-sampling applications in space-constrained industrial and communications systems - emphasizing thermal robustness, noise immunity, and minimal external component count.

FAQ

What is the operating temperature range of the LTC1407HMSE#PBF?

The LTC1407HMSE#PBF is rated for –40°C to +125°C operation - confirmed in the "ORDER INFORMATION" table and "CONVERTER CHARACTERISTICS" section of the datasheet. This H-grade qualification makes it suitable for under-hood automotive subsystems, industrial inverters, and outdoor telecom equipment where ambient temperatures exceed standard commercial or industrial grades.

Does the LTC1407HMSE#PBF support external reference voltage?

Yes, the LTC1407HMSE#PBF supports external reference voltage applied to the VREF pin (Pin 3). The datasheet specifies that an external reference ≥2.55V and ≤VDD will override the internal 2.5V bandgap reference. At 2.55V, the external source sees a DC quiescent load of 0.75mA, rising to 3mA during conversion - requiring appropriate driver capability.

How does the LTC1407HMSE#PBF achieve simultaneous sampling across two channels?

The LTC1407HMSE#PBF achieves true simultaneous sampling using two independent sample-and-hold circuits triggered by the same rising edge of the CONV signal. As stated in the "DESCRIPTION" and "PIN FUNCTIONS" sections, both CH0+–CH0– and CH1+–CH1– pairs are held at the exact instant of the CONV edge, with aperture skew guaranteed ≤200ps - enabling coherent dual-channel acquisition without interpolation or post-processing alignment.

What are the key timing constraints for reliable operation of the LTC1407HMSE#PBF?

Key timing constraints include: tACQ = 39ns minimum acquisition time, t7 = 45ns interval from 32nd SCK rising edge to CONV rising edge, and tSK = 200ps maximum inter-channel aperture skew. These values are guaranteed over the full –40°C to +125°C range and directly impact input buffer selection, PCB layout symmetry, and serial clock phasing - all detailed in the "TIMING CHARACTERISTICS" table.

Can the LTC1407HMSE#PBF be used in battery-powered applications?

Yes, the LTC1407HMSE#PBF is well-suited for battery-powered applications due to its 5.2mA typical active supply current and 10μW Sleep mode power consumption. The Sleep mode is entered via four or more CONV pulses with SCK held static, reducing current draw to 2.0μA - enabling multi-year operation in wireless sensor nodes when paired with duty-cycled microcontrollers and energy harvesting circuits.