Analog Devices Inc. LTC1407HMSE#TRPBF

Overview

LTC1407HMSE#TRPBF 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 draws only 5.2mA from a single 3V supply and features Sleep mode (10μW) and Nap mode (1.2mA), making it suitable for high-speed industrial motor control and ruggedized data acquisition systems.

For engineers reviewing the LTC1407HMSE#TRPBF datasheet, LTC1407HMSE#TRPBF pinout, LTC1407HMSE#TRPBF application, or LTC1407HMSE#TRPBF equivalent, key selection considerations include guaranteed H-grade temperature performance (–40°C to +125°C), simultaneous sampling skew ≤200ps, internal 2.5V reference with ±15ppm/°C tempco, and MSOP-10 package compatibility with space-constrained embedded signal chains.

Technical Context

The LTC1407HMSE#TRPBF implements two independent sample-and-hold circuits triggered synchronously on the rising edge of CONV, enabling true simultaneous capture of CH0 and CH1 differential inputs. Each channel converts at 1.5Msps using a pipelined architecture with 32-clock serial output framing.

It integrates a factory-trimmed 2.5V bandgap reference with external overdrive capability (2.55V–VDD), supports unipolar 0V–2.5V differential input range, and maintains 80dB common-mode rejection up to 100kHz - critical for eliminating ground-loop noise in multiphase power monitoring and I/Q demodulation.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (MSE), exposed pad (Pin 11) connected to GND; requires soldering to PCB ground plane for thermal and noise performance.

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 LTC1407HMSE#TRPBF uniquely delivers guaranteed simultaneous sampling, H-grade temperature qualification, and superior 80dB CMRR - making it the only choice for phase-coherent motor control and ruggedized power monitoring where timing integrity and thermal stability are non-negotiable.

Availability

LTC1407HMSE#TRPBF is available at Aetrix Electronics and suitable for industrial motor control, uninterruptible power supplies, and RF I/Q demodulation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC1407HMSE#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) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC1407 family was designed specifically for high-speed, low-power, simultaneous-sampling applications in portable and ruggedized instrumentation - emphasizing thermal robustness, minimal external components, and deterministic timing behavior.

FAQ

What is the guaranteed operating temperature range for LTC1407HMSE#TRPBF?

The LTC1407HMSE#TRPBF is rated for continuous operation from –40°C to +125°C, meeting the H-grade specification defined in the official Linear Technology (now Analog Devices) datasheet. This rating is verified across all electrical parameters including INL, offset match, and CMRR, making LTC1407HMSE#TRPBF suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 100°C.

Does LTC1407HMSE#TRPBF support true simultaneous sampling, and what is the maximum inter-channel skew?

Yes, LTC1407HMSE#TRPBF performs true simultaneous sampling on both differential input pairs (CH0 and CH1) triggered by the rising edge of the CONV signal. The maximum aperture skew between channels is guaranteed at ≤200ps over the full –40°C to +125°C temperature range, ensuring phase coherence for vector control and I/Q signal processing without external calibration.

Can LTC1407HMSE#TRPBF use an external reference, and what are the voltage requirements?

Yes, LTC1407HMSE#TRPBF allows external reference overdrive via the VREF pin (Pin 3). The external reference must be ≥2.55V and ≤VDD (max 3.6V), with recommended operation at 2.55V–3.3V. At 2.55V, the internal reference amplifier presents a DC load of 0.75mA (up to 3mA during conversion), so the external source must sustain this current while maintaining low noise and drift.

What is the serial interface configuration of LTC1407HMSE#TRPBF, and how many clocks are required per conversion?

LTC1407HMSE#TRPBF uses a 3-wire synchronous serial interface (SCK, CONV, SDO) with no chip select. Each conversion outputs two 14-bit words (CH0 followed by CH1) in a 32-clock frame. The SDO pin is three-state and goes Hi-Z after the 32nd clock unless actively driven; data is valid on the rising edge of SCK, with setup/hold times specified in the timing diagram.

How does the Sleep and Nap shutdown mode work on LTC1407HMSE#TRPBF?

LTC1407HMSE#TRPBF enters Nap mode (1.2mA) after two CONV pulses with SCK held static (high or low); Sleep mode (10μW) activates after four or more such pulses. Both modes retain register state and reference bias. Wake-up occurs on the first SCK edge, with VREF settling in 2ms (per datasheet Note 14). Sleep mode is ideal for battery-powered DAQ systems needing ultra-low standby power.