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Texas Instruments ADS8519IBDBR
- Part No.:
- ADS8519IBDBR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ADS8519IBDBR.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,667
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Product details
Overview
ADS8519IBDBR from Texas Instruments is a 16-bit, 250kSPS successive approximation register (SAR) analog-to-digital converter with integrated reference, sample-and-hold, and SPI-compatible serial interface. It supports ±10V, ±5V, and 0V–8.192V input ranges, delivers 93dB SNR at 20kHz, and achieves ±1.5LSB max INL and ±1LSB max DNL - used in precision industrial data acquisition systems requiring single-supply operation and daisy-chain capability.
For engineers reviewing the ADS8519IBDBR datasheet, ADS8519IBDBR pinout, ADS8519IBDBR application, or ADS8519IBDBR equivalent, this page provides verified technical context, real-world timing behavior, confirmed package mapping to SSOP-28, validated serial interface modes (internal/external DATACLK), and accurate alternative part comparisons for system-level ADC selection.
Technical Context
The ADS8519IBDBR implements a capacitor-based SAR architecture with internal 4.096V reference, programmable input ranges, and dual-clocking flexibility: internal DATACLK (9MHz output) or externally synchronized DATACLK (0.1–26MHz). Its BUSY signal indicates conversion status, while R/C and CS jointly control sampling initiation and data readout timing.
It features configurable data format (straight binary or two's complement), TAG-enabled daisy-chaining for multi-channel systems, and power-down mode (PWRD) reducing dissipation to 20mW. The device operates over –40°C to +85°C with full 16-bit no-missing-codes performance and 110mW typical power at 250kSPS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16 bits - guarantees monotonicity and no missing codes across full temperature range. |
| Throughput Rate | 250 kSPS - fixed cycle time of 4 µs enables deterministic sampling in real-time control loops. |
| INL / DNL | ±1.5 LSB / ±1 LSB max - ensures high linearity for precision measurement without calibration. |
| SNR @ 20kHz | 93 dB - supports accurate digitization of low-distortion sinusoidal signals in instrumentation. |
| Reference Voltage | Internal 4.096 V ±0.25% - stable, drift-compensated reference enabling ratiometric accuracy. |
| Digital Supply Range | 1.65 V to 5.25 V - allows interfacing with modern low-voltage microcontrollers and FPGAs. |
| Package | 28-pin SSOP (DB) - surface-mount footprint compatible with automated PCB assembly. |
Pinout & Package
ADS8519IBDBR is housed in a 28-pin Small Outline Shrink Plastic (SSOP-28) package with 0.65 mm lead pitch, designed for industrial-grade thermal performance (qJA = 67°C/W) and board-level reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R1IN, R2IN, R3IN | Analog input terminals | Support ±10V/±5V/0–8.192V ranges via internal resistor network; ±25V absolute max rating. |
| REF | Reference I/O | Outputs internal 4.096V reference or accepts external 3.9–4.2V source; requires 2.2µF bypass capacitor. |
| CS, R/C | Control inputs | ORed logic: falling edge on second signal initiates conversion; also controls read timing in external clock mode. |
| BUSY | Status output | Active-low open-drain signal indicating conversion in progress; synchronizes host processor data capture. |
| DATA, DATACLK | Serial interface I/O | 16-bit MSB-first SPI-compatible output; DATACLK is bidirectional - output when EXT/INT = low, input when high. |
| TAG | Daisy-chain input | Enables cascading multiple ADS8519 devices on shared DATA bus; level latched at transmission start. |
| PWRD | Power-down control | High-level active input reduces current draw to 20mW; retains last conversion result in output register. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4.096V reference | Eliminates need for external precision reference IC or resistor network, reducing BOM count and layout area. |
| SPI-compatible serial interface | Direct connection to TI C2000, STM32, or Xilinx Zynq without level-shifting or protocol translation. |
| Daisy-chain (TAG) capability | Enables synchronous sampling across up to 16 ADS8519 units using single DATA line and shared clocks. |
| Flexible clocking modes | Internal DATACLK simplifies timing design; external DATACLK supports high-speed DSP interfacing up to 26MHz. |
| Industrial temperature range | Full 16-bit performance guaranteed from –40°C to +85°C - suitable for factory-floor and outdoor equipment. |
Applications
| Industrial Process Control | Data Acquisition Systems |
|---|---|
|
Use Scenario: Monitoring pressure, temperature, and flow sensors in PLC-based control cabinets with 4–20mA loop integration. IC Role / Device Role / Timing Role: Primary ADC capturing sensor outputs at 250kSPS with deterministic 4µs cycle time and BUSY-driven interrupt synchronization. Use Value: ±1.5LSB INL ensures calibrated accuracy across wide temperature swings; internal reference eliminates drift-induced calibration recalibration. |
Use Scenario: Modular DAQ chassis acquiring synchronized multi-channel voltage waveforms for vibration analysis and power quality monitoring. IC Role / Device Role / Timing Role: Channel-specific SAR ADC with TAG daisy-chaining enabling simultaneous sampling across 8+ channels using single controller. Use Value: 93dB SNR at 20kHz captures harmonic content in 50/60Hz power systems; 28-pin SSOP allows dense channel packing per board area. |
| Digital Signal Processing | Medical Equipment |
|
Use Scenario: Front-end digitization in portable ultrasound or ECG analyzers requiring low-noise, low-power analog capture. IC Role / Device Role / Timing Role: High-fidelity signal digitizer interfaced directly to FPGA or DSP via external DATACLK for burst-mode sampling. Use Value: 110mW typical power at full speed supports battery-powered operation; 0.67LSB transition noise preserves waveform fidelity. |
Use Scenario: Patient vital sign monitoring in bedside monitors where long-term stability and traceable calibration are critical. IC Role / Device Role / Timing Role: Precision ADC converting isolated biopotential signals (ECG, EEG) with ±10V input range and bipolar zero error ≤±2mV. Use Value: ±2mV bipolar zero error drift (±2ppm/°C) ensures <0.01% baseline shift over clinical operating temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8509IBDBR | 18-bit resolution, 100kSPS, same SSOP-28 package, identical pinout and interface logic. | Higher resolution but lower throughput; better for static measurements (e.g., weigh scales), less suitable for dynamic signal capture. | Select ADS8509IBDBR only if 18-bit resolution is required and 100kSPS suffices; ADS8519IBDBR preferred for 250kSPS real-time needs. |
| AD7606BSTZ | 8-channel, 16-bit, 200kSPS per channel, parallel/serial interface, LQFP-64 package. | Multi-channel integration reduces component count but requires larger PCB area and different layout constraints. | Choose AD7606BSTZ for space-constrained multi-sensor systems needing channel density; ADS8519IBDBR for single-channel, low-pin-count, or daisy-chain scalability. |
Compared with ADS8509IBDBR and AD7606BSTZ, the ADS8519IBDBR uniquely balances 250kSPS throughput, 16-bit linearity, SSOP-28 compactness, and TAG-based daisy-chaining - making it optimal for modular, scalable, and timing-critical industrial ADC deployments.
Availability
ADS8519IBDBR is available at Aetrix Electronics and suitable for industrial process control, data acquisition systems, and medical equipment requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for ADS8519IBDBR 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-reliability components for industrial, automotive, and communications markets.
The ADS8519IBDBR belongs to TI's precision SAR ADC product line, engineered for high-accuracy, low-power, and easy-to-integrate data acquisition in harsh industrial environments.
FAQ
What input voltage ranges does the ADS8519IBDBR support?
The ADS8519IBDBR supports three standard input ranges: ±10V, ±5V, and 0V to 8.192V - selectable via external resistor configuration per Table 2 in the datasheet. All ranges use the same internal precision resistor network and maintain full 16-bit performance with ±1.5LSB INL across –40°C to +85°C. The ±10V range yields 305µV/LSB resolution.
How does the ADS8519IBDBR handle data readout timing with external DATACLK?
The ADS8519IBDBR uses a discontinuous external DATACLK mode for reliable operation: data from the previous conversion are shifted out only after a valid read command (CS low + R/C high or rising edge), and the external clock must be gated to avoid interference during the second half of the conversion cycle (td11 window). In this mode, 16–18 DATACLK pulses are required depending on SYNC usage and edge-sampling choice.
Can the ADS8519IBDBR operate with an external reference, and what are the requirements?
Yes, the ADS8519IBDBR accepts an external reference between 3.9V and 4.2V applied to the REF pin. When using external reference, full-scale error improves to ±0.05%FSR (vs ±0.25% with internal reference), and drift reduces to ±2ppm/°C. External reference must be low-noise and capable of sourcing ≤100µA; internal reference remains disabled when external voltage is present.
What is the function of the TAG pin on the ADS8519IBDBR, and how is it used in daisy-chain mode?
The TAG pin on the ADS8519IBDBR serves as a daisy-chain enable input: when EXT/INT = high and multiple devices share a common DATA line, the TAG level from the upstream device is latched at the start of transmission and output on the downstream device's DATA pin. This allows up to 16 ADS8519IBDBR units to be cascaded with synchronized readout using a single controller and minimal interconnect.
Does the ADS8519IBDBR require external passive components for stable operation?
Yes, the ADS8519IBDBR requires two mandatory external components: a 2.2µF tantalum capacitor from CAP to AGND2 for reference buffer stabilization, and a 2.2µF tantalum capacitor from REF to AGND2 for reference decoupling. Additionally, VANA and VDIG each require local 0.1µF ceramic + 10µF tantalum decoupling per datasheet Figure 30 - omission risks reference instability and increased INL/DNL errors.
ADS8519IBDBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- 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, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 1.65V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8519IBDBR FAQ
1.How can I place an order for ADS8519IBDBR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8519IBDBR 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 ADS8519IBDBR reliable?
The price and inventory of ADS8519IBDBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8519IBDBR is usually 5 days.
3.What payment methods are accepted for ADS8519IBDBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8519IBDBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8519IBDBR?
ADS8519IBDBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8519IBDBR 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 ADS8519IBDBR?
For technical support, including ADS8519IBDBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8519IBDBR requirements.
6.How does Aetrix verify that ADS8519IBDBR is sourced from the original manufacturer or authorized distributors?
All ADS8519IBDBR 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 ADS8519IBDBR meets industry standards.
7.What is the process for return or replacement of ADS8519IBDBR?
All ADS8519IBDBR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8519IBDBR, 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 ADS8519IBDBR part is unused and in its original packaging.
Return procedure for ADS8519IBDBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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