Texas Instruments ADC3910S025IRSMT

Overview

ADC3910S025IRSMT from Texas Instruments is a 10-bit, single-channel, 25 MSPS analog-to-digital converter with 1-clock-cycle latency, 150 MHz input bandwidth, and ultra-low power consumption (41 mW at 25 MSPS). It features buffered differential or single-ended inputs, internal/external reference support, and dual digital comparators - optimized for low-latency control loops and LiDAR signal acquisition.

For engineers reviewing the ADC3910S025IRSMT datasheet, ADC3910S025IRSMT pinout, ADC3910S025IRSMT application, or ADC3910S025IRSMT equivalent, key selection criteria include its 1-cycle latency, 4mm × 4mm VQFN-32 package, 1.8V analog supply with optional 3.3V IO, industrial temperature range (–40°C to +105°C), and support for DDR/SDR/serial CMOS output interfaces.

Technical Context

The ADC3910S025IRSMT implements a pipelined SAR architecture with on-chip input buffers and programmable digital comparators per channel. Its 1-clock-cycle latency is achieved via synchronous sampling and direct data path routing, eliminating pipeline registers in the critical path.

It supports flexible interface modes: default SDR CMOS for single-channel operation, plus configurable DDR, HDDR, or 2-/4-lane serial CMOS. The device integrates an on-chip 1.2V reference (±0.8% gain error) and accepts external 1.2V reference with ±2.25% gain error tolerance, while maintaining ±1 LSB INL and no missing codes across –40°C to +105°C.

Key Specifications

Pinout & Package

ADC3910S025IRSMT is housed in a 32-pin VQFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per TI SBASAD1A (May 2024) datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8860IRGET and ADC3660IRSBT, ADC3910S025IRSMT uniquely balances 10-bit resolution, 25 MSPS throughput, 1-cycle latency, and minimal interface overhead - making it optimal for embedded control and portable instrumentation where timing determinism and board area are primary constraints.

Availability

ADC3910S025IRSMT is available at Aetrix Electronics and suitable for LiDAR subsystems, industrial motor drives, portable GNSS receivers, and source-measure units requiring stable component supply and guaranteed long-term manufacturability.

Supply support for ADC3910S025IRSMT 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, embedded processing, and high-performance data converters for industrial, automotive, and communications markets.

The ADC3910 family was designed specifically for ultra-low-latency, low-power signal acquisition in real-time control, optical sensing, and portable test equipment - prioritizing deterministic timing, small footprint, and flexible digital interfacing.

FAQ

What is the minimum sampling clock frequency supported by ADC3910S025IRSMT?

The ADC3910S025IRSMT supports a minimum sampling clock frequency of 5 MHz, as specified in the Absolute Maximum Ratings and Recommended Operating Conditions sections of the datasheet. This allows flexible use in applications requiring variable-rate sampling down to 5 MSPS while maintaining full 10-bit performance and 1-cycle latency.

Does ADC3910S025IRSMT support external reference, and what is its required voltage?

Yes, ADC3910S025IRSMT supports an external 1.2 V reference applied to the VREF pin. The datasheet specifies 1.2 V nominal with ±0.1 V tolerance and recommends using a 10 μF + 0.1 μF ceramic bypass capacitor network placed close to the VREF and GND pins for stability and noise rejection.

How does the power-down mode function on ADC3910S025IRSMT, and what is its typical power consumption?

ADC3910S025IRSMT enters global power-down mode when the OEN/PD pin is held low or configured via SPI. In this state, analog and digital circuitry are disabled, reducing total power consumption to 4 mW - verified across temperature and supply conditions per Section 5.5 of the datasheet.

Can ADC3910S025IRSMT interface directly with a 3.3V FPGA I/O bank?

Yes, ADC3910S025IRSMT supports 3.3V IOVDD operation, enabling direct connection to 3.3V FPGA I/O banks. Its CMOS digital outputs (D0–D11, DCLK, ALERT) are specified for VOH ≥ IOVDD – 0.1 V and VOL ≤ 0.1 V under 400 μA load, ensuring robust level compatibility without external translators.

What is the purpose of the dual digital comparators in ADC3910S025IRSMT, and how are they configured?

The dual digital comparators in ADC3910S025IRSMT provide independent high/low threshold monitoring per channel with programmable hysteresis and event counting. They are configured via SPI registers and drive the ALERT/GPO pin to signal out-of-window conditions - enabling autonomous fault detection without host processor polling.