Texas Instruments ADS8413IRGZTG4

Overview

ADS8413IRGZTG4 from Texas Instruments is a 16-bit, 2-MSPS SAR analog-to-digital converter with unipolar differential input range (–4 V to +4 V), integrated 4-V internal reference and buffer, and 200-Mbps LVDS serial interface. It delivers 92 dB SNR and –107 dB THD at 10 kHz, enabling high-fidelity data acquisition in medical instrumentation and closed-loop control systems.

For engineers reviewing the ADS8413IRGZTG4 datasheet, ADS8413IRGZTG4 pinout, ADS8413IRGZTG4 application, or ADS8413IRGZTG4 equivalent, key selection criteria include zero-latency operation at full speed, nap mode (125 mW) and power-down (5 µW) states, 48-pin QFN package compatibility, and daisy-chain/cascade support for multi-channel synchronization.

Technical Context

The ADS8413IRGZTG4 implements a capacitor-based SAR architecture with inherent sample-and-hold, supporting back-to-back conversions at 2 MSPS with no latency. Its LVDS interface operates at up to 210 MHz with configurable 16-/8-bit frame modes and supports daisy-chaining via SYNC_O/SDO/CLK_O outputs and SYNC_I/SDI/CLK_I inputs.

Internal reference regulation is ±0.15% gain error and 36 ppm/°C drift; input common-mode voltage is fixed at Vref/2 (2.048 V typ); acquisition time is 100 ns and conversion time is 391 ns at +VBD = 3.3 V. The device uses separate analog (+VA) and digital (+VBD) supplies, with independent AGND and BDGND planes.

Key Specifications

Pinout & Package

ADS8413IRGZTG4 is housed in a 48-pin QFN package (RGZ) with exposed thermal pad, compatible with standard reflow profiles and offering low-inductance analog/digital ground separation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8413IRGZTG4, ADS8412IRGZT offers identical speed and packaging but requires external biasing for unipolar use, while ADS8402IPFBT trades LVDS simplicity and power efficiency for parallel interface flexibility and lower sample rate - making ADS8413IRGZTG4 optimal for new high-density, low-power, multi-channel designs.

Availability

ADS8413IRGZTG4 is available at Aetrix Electronics and suitable for medical instrumentation, high-speed data acquisition, and closed-loop control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADS8413IRGZTG4 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 precision data converters and industrial-grade signal chain solutions.

The ADS8413IRGZTG4 belongs to TI's high-speed SAR ADC family designed for applications demanding 16-bit resolution at ≥1 MSPS with low latency, integrated references, and robust serial interfaces - targeting medical, test equipment, and automation markets.

FAQ

What is the absolute maximum input voltage for ADS8413IRGZTG4?

The absolute maximum input voltage for ADS8413IRGZTG4 is –0.3 V to (+VA + 0.3 V) on +IN and –IN pins, with +VA rated up to 7 V. Exceeding these limits risks permanent damage. For normal operation, the full-scale differential input span is –4 V to +4 V with common-mode at Vref/2 (2.048 V), per the datasheet's recommended operating conditions.

Does ADS8413IRGZTG4 support external reference operation?

Yes, ADS8413IRGZTG4 supports external reference operation via the REFIN pin, which accepts 3.9 V to 4.2 V. When using an external reference, REFOUT must be left unconnected and not shorted to REFIN. The internal 4.096 V reference remains disabled, and gain error degrades to ±0.15% of full scale, as specified in the datasheet.

How does nap mode reduce power consumption in ADS8413IRGZTG4?

Nap mode reduces ADS8413IRGZTG4 power consumption from 290 mW (2 MSPS) to 125 mW by gating internal clock domains and lowering bias currents while preserving reference stability and enabling sub-25 ms wake-up. It is activated by asserting the NAP pin high at conversion end and is ideal for burst-mode acquisition in portable diagnostic devices.

Can ADS8413IRGZTG4 be used in daisy-chain configurations with mixed supply voltages?

Yes, ADS8413IRGZTG4 supports daisy-chain operation with mixed +VBD supplies (3.3 V or 5 V) across devices, as LVDS receiver thresholds (±50 mV) and common-mode range (0.2 V to 2.2 V) accommodate both levels. However, all devices must share the same MODE_C/D and CLK_I/E settings, and timing margins must be verified per Figure 12 in the datasheet.

What is the purpose of the LAT_Y/N pin on ADS8413IRGZTG4?

The LAT_Y/N pin on ADS8413IRGZTG4 selects latency mode: LAT_Y/N = 0 enables zero-latency read timing (data available immediately post-conversion), required for the first device in daisy chain; LAT_Y/N = 1 enables buffered read timing, used for subsequent devices to align data frames. This pin directly controls the internal timing path between BUSY deassertion and SDO enable.