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Texas Instruments ADS8319IDGSR
- Part No.:
- ADS8319IDGSR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS8319IDGSR.pdf
- Description:
- IC ADC 16BIT SAR 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,294
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Product details
Overview
ADS8319IDGSR 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 and battery-powered data acquisition systems.
For engineers reviewing the ADS8319IDGSR datasheet, ADS8319IDGSR pinout, ADS8319IDGSR application, or ADS8319IDGSR equivalent, key selection criteria include guaranteed ±1.5-LSB INL, 18-mW typical power at full speed, daisy-chain-capable 50-MHz SPI interface, and support for 2.375-V to 5.5-V digital I/O supply voltage.
Technical Context
The ADS8319IDGSR implements a capacitor-based SAR architecture with integrated sample-and-hold, enabling true zero-latency conversion at full 500-kSPS throughput. Its timing is synchronized via CONVST and SCLK, with Busy Indicator output simplifying host synchronization.
It supports two SPI modes: 3-wire (CONVST as CS) and 4-wire (SDI as dedicated CS), plus daisy-chain configuration for multi-device systems. Input range is strictly unipolar single-ended (0 V to VREF), with –IN internally grounded and limited to ±0.1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision measurement |
| 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 |
| SNR (typ) | 93.6 dB at 10 kHz - corresponds to ~15.6 effective bits for clean signal digitization |
| Power @ 500 kSPS | 18 mW typical - scales linearly to 3.6 mW/100 kSPS for dynamic power management |
| Reference Range | 2.25 V to 4.096 V - compatible with standard precision references including 2.5 V, 4.096 V |
| ESD Rating | ±2000 V HBM - meets industrial handling requirements without additional protection |
Pinout & Package
ADS8319IDGSR is packaged in a 10-pin VSSOP (DGS) with 3.00 mm × 3.00 mm body size and exposed thermal pad not connected internally. Pin functions are validated per TI SLAS600C datasheet Rev C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFIN | Analog reference input | Accepts external 2.25–4.096 V reference; requires 0.1-µF + 10-µF decoupling |
| +VA | Analog power supply | 4.5–5.5 V supply for analog core; separate from digital I/O rail |
| +IN | Analog input (noninverting) | Single-ended unipolar input; full-scale range = 0 V to VREF |
| –IN | Analog input (inverting) | Internally grounded; limited to ±0.1 V - not used for differential input |
| GND | Common analog/digital ground | Single ground plane required; connects +VA and +VBD return paths |
| CONVST | Convert start / CS input | Edge-triggered conversion initiator; doubles as chip select in 3-wire mode |
| SCLK | Serial clock input | Up to 50 MHz; controls SDO timing and sampling phase alignment |
| SDO | Serial data output | MSB-first, SPI-compatible; tri-state controlled by CONVST/SDI |
| SDI | Serial data input | Mode-select input at conversion start; serves as CS in 4-wire mode |
| +VBD | Digital I/O supply | 2.375–5.5 V logic rail; independent of +VA for mixed-supply flexibility |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Delivers first valid result immediately after CONVST edge - no pipeline delay for real-time control loops |
| Daisy-chain SPI interface | Enables cascaded readout of multiple ADS8319 devices using single SCLK/SDI/SDO lines - reduces GPIO count |
| Power-down current | 250 nA typical - allows microamp-level sleep states between conversions for ultra-low average power |
| Unipolar input architecture | Eliminates need for level-shifting or bipolar front-end circuitry when measuring 0–VREF sensor outputs |
| Busy Indicator function | SDO pin asserts low during conversion - provides hardware-synchronized ready signal without polling |
Applications
| Battery-Powered Data Loggers | Industrial Process Monitoring |
|---|---|
Use Scenario: Continuous 16-bit voltage logging from thermocouples and RTDs in remote field sensors powered by coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs at 100–500 kSPS with on-demand wake-up and automatic power-down between samples. Use Value: 18-mW active power and 250-nA power-down current extend battery life to multi-year operation in low-duty-cycle deployments. | Use Scenario: High-accuracy analog input module in PLC I/O cards measuring 4–20 mA loop signals and strain gauge bridges. IC Role / Device Role / Timing Role: Precision front-end digitizer with ±1.5-LSB INL and 93.6-dB SNR, synchronized to system controller via CONVST-triggered SPI reads. Use Value: Eliminates external op-amp gain stages and reference buffers due to direct 0–VREF unipolar input compatibility and integrated sample-and-hold. |
| Portable Medical Instrumentation | Optical Network Diagnostics |
Use Scenario: ECG and pulse oximeter front-ends requiring low-noise, low-power, and clinically traceable linearity performance. IC Role / Device Role / Timing Role: Signal acquisition ADC operating at 1–5 kSPS with programmable sampling rate scaling to minimize power while preserving diagnostic fidelity. Use Value: 93.6-dB SNR at 10 kHz and –106-dB THD ensure clean capture of bio-potential waveforms without harmonic distortion artifacts. | Use Scenario: Real-time monitoring of laser diode bias current and photodiode feedback in DWDM transceivers. IC Role / Device Role / Timing Role: Fast-response ADC sampling control-loop feedback at up to 500 kSPS, interfaced via daisy-chained SPI to FPGA host. Use Value: Zero-latency operation and 1400-ns conversion time enable tight closed-loop bandwidths without added digital processing delay. |
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 |
|---|---|---|---|
| ADS8320IDGSR | Same 16-bit SAR core but 1-MSPS max rate; higher 25-mW power at full speed; identical pinout and interface | Better suited for higher-bandwidth control loops where >500 kSPS is required | Select ADS8320IDGSR only if sustained >500 kSPS sampling is mandatory; otherwise ADS8319IDGSR offers lower power and cost |
| AD7682BRMZ | 16-bit, 250-kSPS SAR ADC; uses pseudo-differential input (IN+ and IN− both active); 3.3-V-only digital supply | Requires external level-shifting for unipolar 0–VREF inputs; lacks daisy-chain mode | Choose AD7682BRMZ when differential input rejection is needed; ADS8319IDGSR preferred for simpler unipolar designs with flexible I/O voltage |
Compared with ADS8320IDGSR, ADS8319IDGSR trades 2× speed for 28% lower active power and broader +VBD voltage range (2.375–5.5 V vs 4.75–5.25 V); versus AD7682BRMZ, it offers native unipolar input, daisy-chain capability, and superior SNR (93.6 dB vs 92.5 dB), at the cost of slightly higher INL (±1.5 LSB vs ±1.0 LSB).
Availability
ADS8319IDGSR is available at Aetrix Electronics and suitable for battery-powered equipment, industrial process controls, medical electronics, and optical networking applications requiring stable component supply and long-term production continuity.
Supply support for ADS8319IDGSR 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 company specializing in analog, embedded processing, and high-reliability ICs for industrial, automotive, and communications markets.
The ADS8319 belongs to TI's precision SAR ADC product line, designed for high-resolution, low-power data acquisition in space-constrained and energy-sensitive systems where accuracy, simplicity, and supply flexibility are critical.
FAQ
What is the maximum sampling rate supported by the ADS8319IDGSR?
The ADS8319IDGSR supports a maximum sampling rate of 500 kSPS. This is achieved with a 1400-ns conversion time and 600-ns acquisition time, enabling full 16-bit results every 2 µs. The device maintains specified performance - including ±1.5-LSB INL and 93.6-dB SNR - at this rate when operated within recommended conditions (+VA = 5 V, VREF = 4 V, TA = 25°C).
Does the ADS8319IDGSR support differential input mode?
No, the ADS8319IDGSR does not support true differential input. Its –IN pin is internally grounded and limited to ±0.1 V; the device is specified exclusively for unipolar single-ended operation (0 V to VREF on +IN). Attempting differential signaling violates absolute maximum ratings and invalidates specifications. For differential input, consider TI's ADS8326 or ADI's AD7682.
What are the power supply requirements for the ADS8319IDGSR?
The ADS8319IDGSR requires two independent supplies: +VA (analog, 4.5–5.5 V) and +VBD (digital I/O, 2.375–5.5 V). REF IN accepts 2.25–4.096 V. All supplies must be decoupled locally: +VA and +VBD each need ≥0.1-µF ceramic + 10-µF bulk capacitance referenced to GND. The ADS8319IDGSR draws 3.6–4.5 mA from +VA at 500 kSPS.
Can multiple ADS8319IDGSR devices be connected in daisy-chain mode?
Yes, the ADS8319IDGSR supports daisy-chain configuration via its SPI interface. In this mode, SDO of one device connects to SDI of the next, with shared SCLK and CONVST. Up to 16 devices can be cascaded, reducing host GPIO usage. Mode selection is determined by SDI logic level at CONVST rising edge - high enables daisy-chain, low selects 3-wire CS mode.
What package type is used for the ADS8319IDGSR?
The ADS8319IDGSR is supplied in a 10-pin VSSOP (Very Small Outline Package) with 3.00 mm × 3.00 mm body size and 0.5-mm lead pitch. The package code "DGSR" denotes this VSSOP variant (TI's DGS package). It features an exposed thermal pad that is not electrically connected - no internal tie to GND or other nets.
ADS8319IDGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8319IDGSR FAQ
1.How can I place an order for ADS8319IDGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8319IDGSR 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 ADS8319IDGSR reliable?
The price and inventory of ADS8319IDGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8319IDGSR is usually 5 days.
3.What payment methods are accepted for ADS8319IDGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8319IDGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8319IDGSR?
ADS8319IDGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8319IDGSR 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 ADS8319IDGSR?
For technical support, including ADS8319IDGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8319IDGSR requirements.
6.How does Aetrix verify that ADS8319IDGSR is sourced from the original manufacturer or authorized distributors?
All ADS8319IDGSR 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 ADS8319IDGSR meets industry standards.
7.What is the process for return or replacement of ADS8319IDGSR?
All ADS8319IDGSR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8319IDGSR, 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 ADS8319IDGSR part is unused and in its original packaging.
Return procedure for ADS8319IDGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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