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Texas Instruments ADS8319IDRCT
- Part No.:
- ADS8319IDRCT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ADS8319IDRCT.pdf
- Description:
- IC ADC 16BIT SAR 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:141
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Product details
Overview
ADS8319IDRCT from Texas Instruments is a 16-bit, 500-kSPS successive-approximation register (SAR) analog-to-digital converter with unipolar single-ended input (0 V to VREF), SPI-compatible serial interface, and zero-latency operation. It operates from 2.25-V to 5.5-V external reference and delivers 93.6-dB SNR and –106-dB THD at 10 kHz - ideal for high-precision battery-powered instrumentation.
For engineers reviewing the ADS8319IDRCT datasheet, ADS8319IDRCT pinout, ADS8319IDRCT application, or ADS8319IDRCT equivalent, key selection criteria include guaranteed ±1.5-LSB INL (max), 18-mW power at full speed, daisy-chain-capable 50-MHz SPI interface, and dual 10-pin VSSOP/VSON package support for space-constrained designs.
Technical Context
The ADS8319IDRCT integrates a capacitor-based SAR ADC with inherent sample-and-hold, supporting unipolar single-ended inputs referenced to an externally supplied VREF (2.25 V to +VA + 0.1 V). Its conversion architecture achieves zero latency at full 500-kSPS throughput without pipeline delay.
It features a 50-MHz SPI-compatible serial interface with configurable CS/daisy-chain mode selected via SDI level at CONVST rising edge, plus a dedicated Busy indicator output for host synchronization. Power scales linearly: 3.6 mW at 100 kSPS and only 0.25 µW in power-down state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - supports 65,536 distinct digital codes for high-fidelity signal digitization |
| Max Sample Rate | 500 kSPS - enables real-time capture of signals up to ~200 kHz Nyquist bandwidth |
| INL (max) | ±1.5 LSB - ensures monotonicity and <0.0023% full-scale linearity error across temperature |
| SNR (typ) | 93.6 dB at 10 kHz - corresponds to ~15.6 effective bits (ENOB) for clean dynamic performance |
| Power @ 500 kSPS | 18 mW typical - enables low-thermal-load operation in portable or thermally sensitive systems |
| Reference Range | 2.25 V to +VA + 0.1 V - allows flexible scaling from low-voltage rails up to 5.6 V |
| Interface | SPI-compatible, 50-MHz max SCLK - supports daisy-chaining and hardware busy signaling |
Pinout & Package
The ADS8319IDRCT is available in a 10-pin VSSOP package (3.00 mm × 3.00 mm) with exposed thermal pad on VSON variant (DRC). Both packages share identical pin numbering and function mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST | Input control | Starts conversion; doubles as chip select (CS) in 3-wire mode - requires ≥10 ns pulse width |
| GND | Common reference | Analog and digital ground return shared between +VA and +VBD supplies |
| +IN | Analog input | Noninverting single-ended input; accepts 0 V to VREF range with 59-pF input capacitance |
| –IN | Analog input | Inverting input; limited to ±0.1 V and typically grounded at decoupling capacitor |
| REFIN | Analog reference | Positive reference input; requires 0.1-µF bypass + 10-µF storage capacitor for stability |
| SCLK | Digital clock | Serial interface clock; supports 20 ns (≥50 MHz) or 30 ns (≥33 MHz) period depending on +VBD |
| SDO | Digital output | Serial data output; tri-state controlled by CONVST/SDI; valid 5 ns after SCLK falling edge |
| SDI | Digital input | Serial data input; selects interface mode (CS vs daisy-chain) at CONVST rising edge |
| +VA | Analog supply | 4.5 V to 5.5 V analog power; decoupled to GND; supplies internal SAR core and reference buffer |
| +VBD | Digital I/O supply | 2.375 V to 5.5 V digital rail; powers interface logic and determines SCLK timing margins |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Delivers first valid result immediately after conversion completes - no pipeline delay or FIFO buffering |
| Daisy-chain SPI interface | Enables multi-ADC synchronization using single SCLK/SDI/CONVST lines - reduces MCU GPIO count |
| Linear power scaling | Consumes 3.6 mW per 100 kSPS - simplifies thermal design across variable sampling rates |
| Ultra-low power-down current | 250 nA typical - preserves battery life during idle periods in portable measurement devices |
| High DC accuracy | ±1.5-LSB INL and ±1-LSB DNL (max) - eliminates calibration need in moderate-accuracy applications |
Applications
| Battery-Powered Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Portable handheld multimeter acquiring voltage, current, and resistance with 16-bit resolution and >90-dB SNR. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog sensor outputs with zero-latency response to enable real-time display updates. Use Value: 18-mW active power and 0.25-µW power-down dissipation extend battery life beyond 100 hours per charge cycle. |
Use Scenario: Modular rack-mounted DAQ unit capturing synchronized multi-channel analog waveforms at 500 kSPS per channel. IC Role / Device Role / Timing Role: Channel-isolated SAR ADC providing deterministic conversion timing and daisy-chain capability for compact board layout. Use Value: SPI daisy-chain support reduces interconnect complexity and eliminates need for individual CS lines across 8+ channels. |
| Medical Electronics | Optical Networking Monitoring |
Use Scenario: Patient vital sign monitor measuring ECG, SpO₂, and temperature with clinical-grade linearity and noise immunity. IC Role / Device Role / Timing Role: High-accuracy front-end ADC converting amplified biopotential signals with ±1.5-LSB INL guarantee over –40°C to +85°C. Use Value: 93.6-dB SNR and –106-dB THD ensure diagnostic fidelity for sub-mV physiological signals without post-processing correction. |
Use Scenario: Optical transceiver module monitoring laser bias current and photodiode feedback in 10G/25G coherent links. IC Role / Device Role / Timing Role: Precision monitoring ADC tracking analog control loops with fast settling (600 ns) and minimal aperture jitter (6 ps RMS). Use Value: 6-ps aperture jitter enables accurate digitization of high-frequency modulation sidebands critical for BER optimization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8320IDRCT | 16-bit, 1-MSPS, higher power (30 mW), no daisy-chain mode, same VSSOP/VSON footprint | Requires faster sampling but lacks multi-device synchronization; better for single-channel high-speed use | Select when throughput >500 kSPS is mandatory and daisy-chain is unnecessary |
| ADS8322IDRCT | 16-bit, 1-MSPS, differential input (±VREF), 2x input range, 22-mW typical, same package | Supports true differential acquisition and rejects common-mode noise - suited for noisy industrial environments | Select when sensor interface requires differential input or CMRR >78 dB is critical |
Compared with ADS8319IDRCT, ADS8320IDRCT trades daisy-chain capability for doubled speed, while ADS8322IDRCT adds differential input and wider dynamic range at the cost of increased layout sensitivity - all three share identical 10-pin VSSOP/VSON packaging and TI's precision SAR architecture.
Availability
ADS8319IDRCT is available at Aetrix Electronics and suitable for battery-powered instrumentation, medical electronics, optical networking monitoring, and industrial data acquisition systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for ADS8319IDRCT 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 connectivity technologies with over 50 years of innovation in precision data converters and power management ICs.
The ADS8319IDRCT belongs to TI's precision SAR ADC product line, engineered for high-resolution, low-power, and deterministic timing in portable and space-constrained measurement systems where accuracy and energy efficiency are co-critical.
FAQ
What is the maximum supported reference voltage for the ADS8319IDRCT?
The ADS8319IDRCT accepts an external reference voltage (REFIN) from 2.25 V up to +VA + 0.1 V. With +VA = 5.5 V, the absolute maximum reference is 5.6 V. The device maintains specified performance (e.g., ±1.5-LSB INL) across this full range when VREF ≤ +VA, and typical operation uses 2.5 V, 4.096 V, or 5 V references. The ADS8319IDRCT reference input draws 250 µA during conversion, requiring proper decoupling per datasheet guidelines.
Does the ADS8319IDRCT support true differential input?
No, the ADS8319IDRCT supports only unipolar, single-ended analog input (0 V to VREF) on the +IN pin, with –IN internally biased near ground and limited to ±0.1 V. It does not perform differential subtraction or accept complementary signal pairs. For differential input capability, TI recommends the ADS8322IDRCT - a pin-compatible 16-bit SAR ADC with ±VREF input range and 78-dB CMRR. The ADS8319IDRCT's architecture is optimized for simplicity and low power in single-ended sensor interfaces.
How does the ADS8319IDRCT achieve zero latency?
The ADS8319IDRCT achieves zero latency by using a successive-approximation register (SAR) architecture with integrated sample-and-hold - it outputs the conversion result immediately upon completion, with no pipeline stages or FIFO buffering. At 500 kSPS, conversion time is fixed at 1400 ns and acquisition time at 600 ns, yielding a total cycle time of 2000 ns. This deterministic timing makes the ADS8319IDRCT suitable for closed-loop control and real-time display applications where delayed results would degrade system responsiveness.
Can multiple ADS8319IDRCT devices be connected in daisy-chain mode?
Yes, the ADS8319IDRCT supports daisy-chain configuration via its SPI-compatible interface: SDO of one device connects to SDI of the next, sharing SCLK and CONVST lines. Mode selection is controlled by the SDI logic level at the rising edge of CONVST - high enables daisy-chain, low enables standard CS mode. Up to 16 devices can be cascaded, with each contributing 16 bits to a continuous serial stream. This eliminates individual chip-select lines and simplifies firmware for multi-channel synchronous sampling - a key advantage of the ADS8319IDRCT over non-daisy-chain alternatives.
What are the thermal characteristics of the ADS8319IDRCT in VSSOP and VSON packages?
The ADS8319IDRCT exhibits RθJA = 107.5°C/W in the 10-pin VSSOP (DGS) package and RθJA = 87.2°C/W in the 10-pin VSON (DRC) package - reflecting superior heat dissipation from the VSON's exposed thermal pad. Both packages are rated for operation from –40°C to +85°C ambient, with junction temperature limited to 150°C. At 18 mW dissipation and 25°C ambient, the VSON package yields ~1.6°C junction rise versus ~2.0°C for VSSOP - a meaningful margin in thermally constrained PCB layouts. The ADS8319IDRCT's low power profile further minimizes self-heating impact on measurement accuracy.
ADS8319IDRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.375V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-VSON (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8319IDRCT FAQ
1.How can I place an order for ADS8319IDRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8319IDRCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS8319IDRCT reliable?
The price and inventory of ADS8319IDRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8319IDRCT is usually 5 days.
3.What payment methods are accepted for ADS8319IDRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8319IDRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8319IDRCT?
ADS8319IDRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8319IDRCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS8319IDRCT?
For technical support, including ADS8319IDRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8319IDRCT requirements.
6.How does Aetrix verify that ADS8319IDRCT is sourced from the original manufacturer or authorized distributors?
All ADS8319IDRCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS8319IDRCT meets industry standards.
7.What is the process for return or replacement of ADS8319IDRCT?
All ADS8319IDRCT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8319IDRCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS8319IDRCT part is unused and in its original packaging.
Return procedure for ADS8319IDRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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