Texas Instruments ADS8413IBRGZT

Overview

ADS8413IBRGZT from Texas Instruments is a 16-bit, 2-MSPS SAR analog-to-digital converter with LVDS serial interface, internal 4.096-V reference, and zero-latency operation at full speed. It delivers 92-dB SNR and –107-dB THD at 10 kHz input, supporting unipolar differential input range of –4 V to +4 V. Used in high-speed data acquisition systems requiring precise timing and low noise.

For engineers reviewing the ADS8413IBRGZT datasheet, ADS8413IBRGZT pinout, ADS8413IBRGZT application, or ADS8413IBRGZT equivalent, this page provides verified specifications, validated package mapping, confirmed LVDS timing behavior, real-world use scenarios, and two technically documented alternative parts for medical instrumentation, closed-loop control, and communications signal chain design.

Technical Context

The ADS8413IBRGZT implements a capacitor-based SAR architecture with integrated sample-and-hold, enabling true zero-latency conversion at 2 MSPS. Its 200-Mbps LVDS serial interface supports daisy-chain or cascade configurations using SYNC_O, SDO, and CLK_O signals with configurable 8-/16-bit frame modes.

It features dual power domains (+VA = 5 V for analog core, +VBD = 3.3 V or 5 V for LVDS/CMOS I/O), internal reference buffer, and selectable nap mode (25 mA) or power-down state (1–2.5 µA). Integral linearity is ±2 LSB max, DNL is +1.5/–1 LSB max, and aperture jitter is 10 ps - all specified over –40°C to +85°C.

Key Specifications

Pinout & Package

ADS8413IBRGZT is housed in a 48-pin QFN package (RGZ) with exposed thermal pad. Pin numbering follows TI's top-view layout; AGND and BDGND pins are distributed for analog/digital ground separation, and +VA/+VBD supplies are decoupled per datasheet recommendations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8413IBRGZT, ADS8412IBRGZT offers identical speed and resolution but mandates fully differential inputs, while ADS8402IPFBT trades LVDS efficiency and integration for simpler interface and reduced data rate - both require PCB redesign and firmware adaptation.

Availability

ADS8413IBRGZT is available at Aetrix Electronics and suitable for medical instrumentation, high-speed closed-loop control, and communications baseband receiver applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADS8413IBRGZT 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 signal chain solutions.

The ADS8413IBRGZT belongs to TI's high-speed SAR ADC family designed for precision, low-latency digitization in demanding instrumentation and control systems - emphasizing LVDS interface robustness, internal reference stability, and thermal performance in QFN packages.

FAQ

What is the maximum sample rate supported by the ADS8413IBRGZT?

The ADS8413IBRGZT supports a maximum throughput rate of 2 MSPS, with fixed conversion time of 391 ns at +VBD = 3.3 V and 360 ns at +VBD = 5 V. This rate is achievable with zero latency in back-to-back operation when LAT_Y/N = 0 and proper timing alignment between CONVST/CSTART and RD signals. The device maintains full 16-bit resolution and specified SNR/THD performance at this rate.

Does the ADS8413IBRGZT require an external reference voltage?

No, the ADS8413IBRGZT includes a 4.096-V internal reference with ±16 mV tolerance and 36 ppm/°C drift, eliminating need for external reference in most applications. REFIN can accept 3.9–4.2 V external reference if higher precision or custom voltage is required, and REFOUT provides buffered output for driving external circuitry. Internal reference is enabled by shorting REFOUT to REFIN.

How does the LVDS interface of the ADS8413IBRGZT support multi-device synchronization?

The ADS8413IBRGZT uses SYNC_O, SDO, and CLK_O LVDS outputs along with BUS_BUSY handshaking to enable deterministic daisy-chain or cascade configurations. In daisy chain (MODE_C/D = 0), SYNC_O from one device drives SYNC_I of the next, aligning frame boundaries. BUS_BUSY asserts during active read cycles, allowing downstream devices to coordinate bus access without contention - verified in TI SLAS490 timing diagrams.

What power-saving modes are available on the ADS8413IBRGZT?

The ADS8413IBRGZT offers three power states: full operation (290 mW at 2 MSPS), nap mode (125 mW, +VA supply current drops to 25 mA), and power-down (5 µW, +VA current降至 1–2.5 µA). Nap mode retains configuration and reference bias, enabling fast wake-up (<25 ms), while power-down disables internal circuits and requires 25-ms startup time plus 4-ms internal reference settling after wake-up.

Can the ADS8413IBRGZT interface directly with an FPGA using only LVDS signals?

Yes, the ADS8413IBRGZT provides native LVDS outputs (SDO+/–, CLK_O+/–, SYNC_O+/–) compatible with FPGA LVDS input banks. No level-shifting or serialization ICs are needed. The 200-Mbps interface supports 16-bit or 8-bit frame modes selected via BYTE pin, and timing parameters (e.g., td14 = 1.3 ns setup for data valid) meet Xilinx/Intel FPGA LVDS receiver specifications when routed with controlled impedance.