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Texas Instruments ADS8319IDRCR
- Part No.:
- ADS8319IDRCR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ADS8319IDRCR.pdf
- Description:
- IC ADC 16BIT SAR 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,612
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Product details
Overview
ADS8319IDRCR 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 at 10 kHz - used in portable instrumentation requiring high resolution and micropower efficiency.
For engineers reviewing the ADS8319IDRCR datasheet, ADS8319IDRCR pinout, ADS8319IDRCR application, or ADS8319IDRCR equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options for battery-powered data acquisition and precision sensor interfacing.
Technical Context
The ADS8319IDRCR implements a capacitor-based SAR architecture with integrated sample-and-hold, supporting true zero-latency conversion at full 500-kSPS throughput. Its digital interface operates at up to 50 MHz SCLK and supports daisy-chaining via SDI/SDO with CONVST-triggered acquisition.
It features dual power domains: +VA (4.5–5.5 V analog supply) and +VBD (2.375–5.5 V digital I/O supply), enabling independent voltage scaling. Reference input (REFIN) accepts 2.25–4.096 V, and the device enters automatic power-down between conversions, drawing only 0.25 µW typical in standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-fidelity signal digitization. |
| Max Sample Rate | 500 kSPS - enables real-time capture of signals up to ~200 kHz Nyquist bandwidth. |
| SNR (10 kHz) | 93.6 dB typical - supports >15.5 ENOB for precision measurement applications. |
| INL (max) | ±1.5 LSB - ensures monotonicity and accurate end-point linearity across full scale. |
| Power @ 500 kSPS | 18 mW typical - scales linearly to 3.6 mW at 100 kSPS for adaptive power management. |
| Power-Down Current | 0.25 µW typical - reduces system idle power in battery-critical deployments. |
| Reference Range | 2.25 V to 4.096 V - compatible with common precision references including 2.5 V, 4.096 V, and external buffered sources. |
Pinout & Package
ADS8319IDRCR is packaged in a 10-pin VSON (DRC) package with 3.00 mm × 3.00 mm body size and exposed thermal pad. This thermally enhanced leadless package supports high-density PCB layouts and improved power dissipation (RθJA = 87.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFIN | Analog reference input | Accepts external reference voltage (2.25–4.096 V); requires 0.1-µF + 10-µF decoupling for stability. |
| +VA | Analog power supply | 4.5–5.5 V supply for analog core; must be independently decoupled from digital rails. |
| +IN | Analog input (noninverting) | Single-ended input node; full-scale range = 0 V to VREF; max input = VREF + 0.1 V. |
| –IN | Analog input (inverting) | Internally grounded via decoupling cap; limited to ±0.1 V differential swing. |
| GND | Common analog/digital ground | Shared return for +VA and +VBD; critical for noise isolation in mixed-signal layout. |
| CONVST | Convert start / chip select | Edge-triggered acquisition control; doubles as CS in 3-wire mode; min pulse width = 10 ns. |
| SCLK | Serial clock input | Up to 50 MHz; controls timing of SDO output and SDI sampling; duty cycle ≥45%. |
| SDO | Serial data output | MSB-first, 16-bit output synchronized to SCLK falling edge; 3-state controlled by CONVST/SDI. |
| SDI | Serial data input | Configures interface mode (daisy-chain vs CS) at conversion start; also serves as CS in 4-wire mode. |
| +VBD | Digital I/O supply | 2.375–5.5 V rail for logic interface; independent of +VA to enable level-shifting flexibility. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Delivers first valid result immediately after CONVST edge - eliminates pipeline delay in closed-loop control. |
| SPI-compatible daisy-chain | Enables multi-channel synchronization without additional GPIOs; SDI configures mode on each conversion start. |
| Unipolar single-ended input | Simplifies front-end design by eliminating need for differential drivers or level-shifting circuitry. |
| Linear power-vs-speed scaling | Reduces dynamic power from 18 mW @ 500 kSPS to 3.6 mW @ 100 kSPS - ideal for variable-rate sensing. |
| Automatic power-down | Enters ultra-low-power state (0.25 µW) between conversions - extends battery life in intermittent-sampling systems. |
Applications
| Battery-Powered Instrumentation | Data Acquisition Systems |
|---|---|
|
Use Scenario: Handheld multimeter capturing DC/AC voltage and current with 16-bit resolution and <100 ppm accuracy. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned sensor outputs; zero-latency ensures immediate response to user-triggered measurements. Use Value: 93.6-dB SNR and ±1.5-LSB INL enable sub-0.01% measurement fidelity without post-calibration. |
Use Scenario: Modular DAQ unit acquiring 8-channel analog inputs from strain gauges and RTDs in industrial field equipment. IC Role / Device Role / Timing Role: Channel-synchronized SAR ADC with daisy-chain interface - simplifies FPGA or MCU firmware for multi-device readout. Use Value: 500-kSPS per channel and 16-bit resolution support simultaneous high-fidelity capture across all channels. |
| Medical Electronics | Optical Networking Monitoring |
|
Use Scenario: Portable ECG monitor digitizing low-amplitude biopotential signals (<5 mVpp) with minimal noise injection. IC Role / Device Role / Timing Role: Front-end ADC with low 0.25 µW power-down current - preserves battery during patient standby periods. Use Value: 93.6-dB SNR at 10 kHz and –106-dB THD suppress harmonic distortion critical for waveform fidelity. |
Use Scenario: Optical transceiver module monitoring laser bias current and photodiode feedback in real time. IC Role / Device Role / Timing Role: Precision current-sense ADC interfacing with isolated amplifiers; uses external 4.096 V reference for 1-LSB repeatability. Use Value: ±1-LSB DNL and 16-bit no-missing-codes guarantee monotonic response over temperature for closed-loop control stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8320IDRCT | Same 16-bit SAR architecture but 1-MSPS max rate; higher 25-mW active power; no power-down mode. | Targeted at higher-speed acquisition where latency tolerance allows pipelined conversion. | Select when throughput >500 kSPS is required and ultra-low standby power is not critical. |
| ADS8322IDRCT | Dual-supply operation (±5 V analog); differential input; 16-bit, 1-MSPS; 24-pin TSSOP package. | Designed for bipolar signal conditioning in test equipment and motor control feedback loops. | Choose for differential input ranges or when ±5 V analog supplies are already present in system. |
Compared with ADS8319IDRCR, ADS8320IDRCT trades micropower optimization for speed, while ADS8322IDRCT shifts focus to bipolar differential acquisition - neither offers identical unipolar micropower + zero-latency + daisy-chain capability in a 10-pin VSON package.
Availability
ADS8319IDRCR is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, optical transceiver monitoring, and industrial data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS8319IDRCR 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 decades of precision data converter innovation.
The ADS8319IDRCR belongs to TI's precision SAR ADC product line, engineered for high-resolution, low-power, and space-constrained applications such as portable test equipment and battery-operated sensors.
FAQ
What is the maximum sampling rate supported by the ADS8319IDRCR?
The ADS8319IDRCR supports a maximum sampling rate of 500 kSPS. At this rate, conversion time is 1400 ns and acquisition time is 600 ns, enabling full 16-bit results every 2 µs. The device maintains specified performance - including ±1.5-LSB INL and 93.6-dB SNR - across its entire operating temperature range (–40°C to +85°C) when powered with +VA = 5 V and VREF = 4 V.
Does the ADS8319IDRCR require an external reference voltage?
Yes, the ADS8319IDRCR requires an external reference voltage applied to the REFIN pin. It accepts 2.25 V to 4.096 V (up to +VA + 0.1 V), with optimal performance achieved using a low-noise, well-decoupled source such as a 4.096 V precision reference. The device does not include an internal reference, and reference input current is 250 µA during conversion - a key design consideration for reference buffer sizing.
Can the ADS8319IDRCR operate with different analog and digital supply voltages?
Yes, the ADS8319IDRCR supports independent analog (+VA) and digital I/O (+VBD) supplies. +VA ranges from 4.5 V to 5.5 V, while +VBD operates from 2.375 V to 5.5 V - enabling level-shifting between 3.3 V microcontrollers and 5 V analog signal chains. This separation improves noise immunity and allows flexible power domain partitioning in mixed-signal PCB layouts.
How does the daisy-chain interface work on the ADS8319IDRCR?
The ADS8319IDRCR supports daisy-chain configuration via its SDI and SDO pins. When SDI is held low at the start of conversion, the device enters daisy-chain mode: SDO outputs 16 bits, then passes remaining clocks to the next device's SCLK. Up to four ADS8319IDRCR units can be cascaded, reducing MCU GPIO count and simplifying synchronized multi-channel readout without external logic.
What is the power consumption of the ADS8319IDRCR in power-down mode?
In automatic power-down mode - entered between conversions - the ADS8319IDRCR draws only 0.25 µW typical (50 nA @ +VA = 5 V). This ultra-low standby power is critical for battery longevity in intermittent-sampling applications like portable diagnostics or environmental sensors. Power-down is fully automatic and requires no software command or pin assertion.
ADS8319IDRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
ADS8319IDRCR FAQ
1.How can I place an order for ADS8319IDRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8319IDRCR 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 ADS8319IDRCR reliable?
The price and inventory of ADS8319IDRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8319IDRCR is usually 5 days.
3.What payment methods are accepted for ADS8319IDRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8319IDRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8319IDRCR?
ADS8319IDRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8319IDRCR 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 ADS8319IDRCR?
For technical support, including ADS8319IDRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8319IDRCR requirements.
6.How does Aetrix verify that ADS8319IDRCR is sourced from the original manufacturer or authorized distributors?
All ADS8319IDRCR 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 ADS8319IDRCR meets industry standards.
7.What is the process for return or replacement of ADS8319IDRCR?
All ADS8319IDRCR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8319IDRCR, 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 ADS8319IDRCR part is unused and in its original packaging.
Return procedure for ADS8319IDRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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