Analog Devices Inc. LTC1407AIMSE#PBF

Overview

LTC1407AIMSE#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 3Msps simultaneous-sampling dual-channel ADC with two fully differential inputs, 1.5Msps per channel throughput, 80dB CMRR at 100kHz, and operation from a single 3V supply. It delivers 73.5dB SINAD at 750kHz input and supports I/Q demodulation in portable RF receivers.

For engineers reviewing the LTC1407AIMSE#PBF datasheet, LTC1407AIMSE#PBF pinout, LTC1407AIMSE#PBF application, or LTC1407AIMSE#PBF equivalent, key selection criteria include simultaneous sampling accuracy, low-power shutdown modes (3mW Nap / 10μW Sleep), 10-lead MSOP package constraints, and internal 2.5V reference compatibility with external overdrive.

Technical Context

The LTC1407AIMSE#PBF integrates two independent sample-and-hold circuits triggered simultaneously on the rising edge of CONV, followed by interleaved 14-bit successive-approximation conversions at 1.5Msps per channel. Its architecture supports true simultaneous acquisition across CH0 and CH1 with 200ps aperture skew.

It uses an internal 2.5V bandgap reference (±15ppm/°C tempco) that can be overdriven by an external 2.55V–VDD reference, and features a 3-wire serial interface (SCK, CONV, SDO) delivering 32-bit output frames - two 14-bit words - in 32 clock cycles with three-state capability.

Key Specifications

Pinout & Package

Package: 10-lead plastic MSOP (MSE), exposed pad (Pin 11) tied to GND. Thermal resistance θ_JA = 40°C/W; requires soldering of exposed pad 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 LTC1407AIMSE#PBF, ADS8326IDGSR trades speed for resolution and lacks integrated reference, while AD7352BRUZ matches speed/resolution but increases power and footprint-making LTC1407AIMSE#PBF optimal for compact, battery-sensitive simultaneous-sampling systems.

Availability

LTC1407AIMSE#PBF is available at Aetrix Electronics and suitable for telecommunications I/Q demodulation, industrial data acquisition systems, and uninterruptible power supplies requiring stable component supply, guaranteed lead-free compliance, and long-term production support.

Supply support for LTC1407AIMSE#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC1407 series belongs to Linear Technology's precision high-speed data acquisition product line, designed specifically for portable, low-power, simultaneous-sampling applications where size, power, and timing coherence are critical.

FAQ

What is the maximum input frequency supported by the LTC1407AIMSE#PBF while maintaining specified SINAD?

The LTC1407AIMSE#PBF maintains 73.5dB SINAD up to 750kHz input frequency under standard conditions (VDD = 3V, TA = 25°C, internal reference). Its full linear bandwidth is 5MHz (S/(N+D) ≥ 68dB), and full power bandwidth is 50MHz (–3dBFS point), enabling accurate digitization of fast transients and wideband signals within its 1.5Msps per-channel throughput limit.

How does the LTC1407AIMSE#PBF achieve simultaneous sampling across both channels?

The LTC1407AIMSE#PBF uses two independent sample-and-hold circuits triggered identically on the rising edge of the CONV signal. This hardware-synchronized acquisition ensures both CH0 and CH1 inputs are captured at precisely the same instant, with aperture skew limited to 200ps - a critical feature for phase-coherent applications like I/Q demodulation and multiphase motor control.

Can the internal 2.5V reference of the LTC1407AIMSE#PBF be overridden, and what are the valid voltage ranges?

Yes, the LTC1407AIMSE#PBF's internal 2.5V reference (Pin 3) can be overdriven by an external reference voltage between 2.55V and VDD (max 3.6V). The external source must sink up to 3mA during conversion. Using an external reference scales the full-scale differential input range proportionally - e.g., a 3.3V reference yields a 0–3.3V unipolar input span - while retaining all timing and noise specifications.

What are the power states of the LTC1407AIMSE#PBF and how are they entered?

The LTC1407AIMSE#PBF supports three power states: Active (5.2mA), Nap (1.2mA), and Sleep (2.0μA). Nap mode is entered with two CONV pulses while SCK is held static (high or low); Sleep mode requires four or more such pulses. Both modes retain register state and wake instantly (<2ms VREF settling) upon next CONV or SCK activity - ideal for burst-mode sensing.

Is the LTC1407AIMSE#PBF pin-compatible with other variants in the LTC1407 family?

Yes, all LTC1407 and LTC1407A variants - including LTC1407CMSE#PBF, LTC1407IMSE#PBF, LTC1407HMSE#PBF, LTC1407ACMSE#PBF, and LTC1407AHMSE#PBF - share identical 10-lead MSOP pinout and footprint. The LTC1407AIMSE#PBF differs only in temperature grade (–40°C to +85°C) and resolution (14-bit), with no layout changes required for drop-in replacement within the same grade family.