Texas Instruments ADC3910D125IRSMR

Overview

ADC3910D125IRSMR from Texas Instruments is a dual-channel, 10-bit, 125MSPS analog-to-digital converter with 1-clock-cycle latency, 92mW power consumption at full speed, buffered differential inputs (150MHz bandwidth), and single 1.8V supply with optional 3.3V IO support. It targets low-latency control loops and LiDAR receiver front-ends requiring deterministic timing and compact integration.

For engineers reviewing the ADC3910D125IRSMR datasheet, ADC3910D125IRSMR pinout, ADC3910D125IRSMR application, or ADC3910D125IRSMR equivalent, key selection criteria include guaranteed 1-cycle latency, dual-channel crosstalk <90dBFS at 20MHz, SNR of 60.6dBFS at 125MSPS/5MHz input, DDR/SDR/serial CMOS interface flexibility, and industrial temperature operation from –40°C to +105°C.

Technical Context

The ADC3910D125IRSMR implements a pipelined architecture optimized for ultra-low latency: conversion completes in one clock cycle, with no pipeline registers added beyond the sampling stage. Its on-chip digital comparators provide per-channel event-triggered interrupts with programmable thresholds and hysteresis-enabling real-time anomaly detection without host CPU intervention.

It supports multiple output interfaces-including DDR and SDR parallel CMOS (12-bit bus), 2-/4-lane serial CMOS, and configurable DCLK/FCLK modes-with timing parameters explicitly specified for 125MSPS operation. The integrated input buffer accepts differential or single-ended signals up to 1.9Vpp full-scale, and the device operates with either internal 1.2V reference or external reference with 12kΩ input impedance.

Key Specifications

Pinout & Package

VQFN-32 (RSM) package, 4mm × 4mm body with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, low-latency ADC applications.

Compared with ADS52J90IRGCT and AD9234BCPZ-125, the ADC3910D125IRSMR uniquely balances ultra-low latency (1 cycle), dual-channel integration, built-in digital monitoring, and flexible IO voltage-making it optimal for space-constrained, real-time embedded systems where deterministic timing and autonomous event response are critical.

Availability

ADC3910D125IRSMR is available at Aetrix Electronics and suitable for LiDAR receiver modules, laser scanner control units, and radio baseband digitization systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADC3910D125IRSMR 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-performance data converters and signal chain solutions.

The ADC3910 family was designed specifically for ultra-low-latency, low-power, dual-channel digitization in space- and power-constrained real-time systems-including industrial sensing, optical time-of-flight, and adaptive control applications.

FAQ

What is the minimum latency achievable with the ADC3910D125IRSMR?

The ADC3910D125IRSMR achieves a fixed latency of exactly 1 clock cycle in low-latency mode-verified across the full –40°C to +105°C temperature range and at all supported sampling rates up to 125 MSPS. This latency is hardware-defined and does not vary with interface configuration, decimation settings, or input signal conditions. The ADC3910D125IRSMR delivers deterministic timing critical for closed-loop control systems where jitter or variable delay would degrade stability.

Does the ADC3910D125IRSMR support external voltage reference operation?

Yes, the ADC3910D125IRSMR supports both internal 1.2 V reference and external reference via the VREF pin. When using external reference, the device accepts a 1.2 V ±1% source with 12 kΩ input impedance and recommends 10 μF + 0.1 μF bypass capacitors placed adjacent to the VREF pin. External reference reduces gain drift to –35 ppm/°C versus –102 ppm/°C with internal reference, improving accuracy over temperature in precision measurement applications using the ADC3910D125IRSMR.

How does the dual digital comparator function in the ADC3910D125IRSMR?

The ADC3910D125IRSMR integrates two independent digital comparators-one per analog channel-that monitor converted data against user-programmed high/low thresholds and hysteresis values. Each comparator generates an ALERT output pulse and increments an internal event counter upon threshold crossing. This enables autonomous anomaly detection (e.g., overvoltage, signal loss) without host processor involvement, reducing system-level latency and CPU load in safety-critical or real-time monitoring applications using the ADC3910D125IRSMR.

What digital interface modes does the ADC3910D125IRSMR support?

The ADC3910D125IRSMR supports DDR CMOS (default for dual-channel), SDR CMOS, and 2-/4-lane serial CMOS output interfaces-all configurable via SPI. DDR mode uses DCLK and D0–D11 for 12-bit parallel data at double data rate; SDR uses same pins at single rate; serial CMOS reduces pin count by multiplexing data across fewer lanes with programmable frame clock. All modes maintain 1-cycle latency in low-latency mode, and IOVDD supports 1.8 V or 3.3 V logic levels-ensuring compatibility with diverse FPGA and ASIC receivers interfacing with the ADC3910D125IRSMR.

Is the ADC3910D125IRSMR pin-compatible with other members of the ADC3910 family?

Yes, the ADC3910D125IRSMR is pin-compatible with all ADC3910Dx (dual-channel) and ADC3910Sx (single-channel) variants in the same VQFN-32 (RSM) package, including ADC3910D025IRSMR and ADC3910D065IRSMR. Pin functions, power domains, and interface signaling are identical across speed grades and channel counts. This allows design reuse and sampling-rate scalability without PCB redesign-enabling rapid prototyping and production variant management using the ADC3910D125IRSMR alongside lower-speed family members.