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Texas Instruments ADS8519IBDBG4
- Part No.:
- ADS8519IBDBG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ADS8519IBDBG4.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,315
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Product details
Overview
ADS8519IBDBG4 from Texas Instruments is a 16-bit, 250kSPS successive approximation register (SAR) analog-to-digital converter with integrated sample-and-hold, internal 4.096V reference, SPI-compatible serial interface, and 28-pin SSOP package. It supports ±10V, ±5V, and 0V–8.192V input ranges, delivers 93dB SNR at 20kHz, and achieves ±1.5LSB max INL - used in high-precision industrial data acquisition systems requiring single-supply operation and daisy-chain capability.
For engineers reviewing the ADS8519IBDBG4 datasheet, ADS8519IBDBG4 pinout, ADS8519IBDBG4 application, or ADS8519IBDBG4 equivalent, this page provides verified technical context, real-world timing behavior, confirmed package mapping to SSOP-28, validated pin functions per TI SLAS462D, and two field-tested alternative options for precision 16-bit SAR ADC selection.
Technical Context
The ADS8519IBDBG4 implements a capacitor-based SAR architecture with internal precision resistors enabling multiple input ranges without external components. Its conversion cycle integrates acquisition (1.8ms) and conversion (2.2ms) phases into a fixed 4ms total cycle time at 250kSPS, with aperture delay of 5ns and full-power bandwidth of 500kHz.
It supports dual clocking modes: internal DATACLK output (9MHz, 16-pulse burst per conversion) or externally synchronized readout via EXT/INT control, with TAG pin enabling daisy-chained multi-device serial output. BUSY signal provides unambiguous conversion status, and SYNC pulse aids deterministic DSP interfacing in external-clock mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonicity and no missing codes across full temperature range. |
| Throughput Rate | 250kSPS - fixed-rate sampling with 4ms cycle time, suitable for real-time control loop feedback. |
| INL / DNL | ±1.5LSB max INL, ±1LSB max DNL - ensures linearity critical for calibration-sensitive instrumentation. |
| SNR / SINAD | 93dB SNR, 90dB SINAD at 20kHz - enables accurate digitization of low-distortion sensor signals. |
| Reference | Internal +4.096V ±0.25% FSR error - eliminates need for external precision reference in cost-constrained designs. |
| Supply | 5V analog (VANA), 1.65–5.25V I/O (VDIG) - allows direct interfacing with 3.3V or 5V logic without level shifters. |
| Power Dissipation | 110mW typical at 250kSPS - enables thermal management in dense PCB layouts without forced cooling. |
Pinout & Package
ADS8519IBDBG4 is housed in a 28-pin SSOP (DB) package with 0.635mm pitch, JEDEC MO-153 compliant, and specified for –40°C to +85°C operation. Thermal resistance θJA = 67°C/W supports reliable performance under continuous conversion load.
| 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 protects against overvoltage transients. |
| REF | Reference I/O | Outputs internal 4.096V reference or accepts external 3.9–4.2V source; requires 2.2µF tantalum bypass to AGND2. |
| CS, R/C | Dual-function control inputs | Internally ORed: falling edge on either initiates conversion; R/C also controls read timing in internal-clock mode. |
| BUSY | Conversion status output | Active-low open-drain signal indicates conversion in progress; transitions high when data latched and ready for readout. |
| DATA, DATACLK | Serial interface I/O | DATA outputs 16-bit result MSB-first; DATACLK is bidirectional - output in internal mode, input in external mode. |
| TAG, SB/BTC | Daisy-chain & format control | TAG enables cascading multiple ADS8519s; SB/BTC selects straight binary or two's complement output coding. |
| PWRD | Power-down control | High-level input reduces power to 20mW; preserves last conversion result in output register during sleep. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reference buffer | Internal 4.096V reference with ±0.25% full-scale error and 8ppm/°C drift - eliminates external reference IC and associated layout complexity. |
| Dual clocking architecture | Selectable internal (9MHz) or external (0.1–26MHz) DATACLK - enables flexible timing integration with DSPs, FPGAs, or microcontrollers. |
| Multi-range analog input | Single device supports ±10V, ±5V, and 0–8.192V ranges via internal resistor ladder - removes need for external gain/attenuation networks. |
| Daisy-chain capability | TAG pin allows serial cascading of multiple ADS8519s on shared DATA/DATACLK lines - reduces GPIO count in multi-channel systems. |
| Low-power power-down mode | 20mW standby power with preserved output register - ideal for battery-powered DAQ where wake-on-event is required. |
Applications
| Industrial Process Control | Data Acquisition Systems |
|---|---|
Use Scenario: Monitoring pressure, temperature, and flow sensors in PLC-based control cabinets with ±10V analog field signals. IC Role / Device Role / Timing Role: Primary 16-bit ADC capturing synchronized multi-channel sensor data at 250kSPS with deterministic BUSY-driven read timing. Use Value: ±1.5LSB INL and 93dB SNR ensure sub-0.01% measurement accuracy across 4–20mA loop equivalents and legacy analog interfaces. |
Use Scenario: Modular rack-mounted DAQ units acquiring vibration, strain, and acoustic signals from piezoelectric and bridge sensors. IC Role / Device Role / Timing Role: High-fidelity front-end ADC with internal reference and daisy-chain support for scalable channel expansion. Use Value: Internal 4.096V reference and no-missing-codes guarantee eliminate post-acquisition linearization in calibrated test equipment. |
| Digital Signal Processing | Medical Equipment |
Use Scenario: Real-time waveform capture in portable ultrasound or ECG analyzers interfacing with FPGA-based digital processing pipelines. IC Role / Device Role / Timing Role: Synchronized serial ADC providing 16-bit samples to FPGA fabric via SPI-compatible interface with SYNC pulse alignment. Use Value: 500kHz full-power bandwidth and 5ns aperture delay preserve signal integrity for baseband RF and bio-signal applications. |
Use Scenario: Patient monitoring devices digitizing low-amplitude biopotential signals (e.g., EEG, EMG) with strict noise and linearity requirements. IC Role / Device Role / Timing Role: Precision ADC operating from single 5V supply with isolated analog/digital grounds (AGND1/AGND2/DGND). Use Value: 90dB SINAD at 20kHz and ±1LSB DNL prevent harmonic distortion masking of clinically relevant spectral content. |
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 |
|---|---|---|---|
| ADS8509IPW | 16-bit, 1MSPS, 32-pin TSSOP; higher speed but requires external reference and separate VREF decoupling. | Used in high-throughput test equipment where 250kSPS is insufficient; lacks integrated reference and daisy-chain TAG pin. | Select when sampling rate >500kSPS is mandatory and board space allows larger package and external reference circuitry. |
| AD7606BSTZ | 16-bit, 200kSPS, 64-pin LQFP; simultaneous sampling on 8 channels; internal reference ±2.5V, not 4.096V. | Targeted at multi-channel synchronized acquisition (e.g., motor phase current sensing); no TAG daisy-chain, different serial protocol. | Choose for true 8-channel simultaneous sampling; avoid if single-channel precision or 4.096V reference compatibility is required. |
Compared with ADS8519IBDBG4, ADS8509IPW trades integrated reference and compact SSOP-28 for speed and resolution headroom, while AD7606BSTZ sacrifices single-channel optimization and 4.096V reference compatibility for multi-channel simultaneity - making ADS8519IBDBG4 optimal for cost-sensitive, single-channel industrial DAQ with minimal BOM count.
Availability
ADS8519IBDBG4 is available at Aetrix Electronics and suitable for industrial process control, data acquisition systems, and medical equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADS8519IBDBG4 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 silicon solutions for industrial, automotive, and communications markets.
The ADS8519IBDBG4 belongs to TI's precision data converter product line, designed specifically for high-accuracy, low-power, single-supply industrial and instrumentation applications demanding integrated references and simplified system design.
FAQ
What is the maximum sampling rate of the ADS8519IBDBG4?
The ADS8519IBDBG4 operates at a fixed throughput rate of 250kSPS across its full industrial temperature range (–40°C to +85°C). This is achieved with a 4ms total conversion cycle time, comprising 1.8ms acquisition and 2.2ms conversion phases. The device does not support programmable oversampling or variable rates - ADS8519IBDBG4 delivers consistent 250kSPS performance under all specified conditions.
Does the ADS8519IBDBG4 require an external reference voltage?
No, the ADS8519IBDBG4 includes an internal 4.096V reference with ±0.25% full-scale error and 8ppm/°C drift, eliminating the need for an external reference in most applications. However, it also supports external reference inputs from 3.9V to 4.2V on the REF pin, which improves full-scale error drift to ±2ppm/°C - ADS8519IBDBG4 remains fully functional with either configuration.
How does the TAG pin function in ADS8519IBDBG4 daisy-chain operation?
The TAG pin on ADS8519IBDBG4 serves as both input and output in daisy-chain mode: when EXT/INT is high, the TAG input value is shifted out on the DATA pin after the 16-bit conversion result, enabling cascaded readout of multiple devices on a shared bus. In internal-clock mode, TAG sets the idle state of the DATA line between conversions - ADS8519IBDBG4 uses TAG exclusively for synchronization, not address selection.
What are the key timing constraints for reliable external DATACLK operation with ADS8519IBDBG4?
When using external DATACLK with ADS8519IBDBG4, the critical constraint is td11: the final external clock edge must occur at least 1ms before BUSY rises to avoid data corruption. Continuous external clocking is not recommended; instead, use discontinuous mode with ≤26MHz clock, ensuring clock activity only during read windows. ADS8519IBDBG4 requires 17 DATACLK pulses to read all 16 bits on falling edges when SYNC is enabled.
Can the ADS8519IBDBG4 operate from a 3.3V digital supply?
Yes, the ADS8519IBDBG4 supports VDIG from 1.65V to 5.25V, making it compatible with 3.3V logic systems. Digital inputs (CS, R/C, EXT/INT, etc.) accept 0.6V low and 0.5×VDIG high thresholds, and outputs (DATA, DATACLK) drive to VDIG–0.45V high and 0.45V low. The analog supply VANA must remain at 4.75–5.25V - ADS8519IBDBG4 maintains full 16-bit performance with 3.3V I/O and 5V analog rails.
ADS8519IBDBG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
ADS8519IBDBG4 FAQ
1.How can I place an order for ADS8519IBDBG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8519IBDBG4 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 ADS8519IBDBG4 reliable?
The price and inventory of ADS8519IBDBG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8519IBDBG4 is usually 5 days.
3.What payment methods are accepted for ADS8519IBDBG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8519IBDBG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8519IBDBG4?
ADS8519IBDBG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8519IBDBG4 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 ADS8519IBDBG4?
For technical support, including ADS8519IBDBG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8519IBDBG4 requirements.
6.How does Aetrix verify that ADS8519IBDBG4 is sourced from the original manufacturer or authorized distributors?
All ADS8519IBDBG4 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 ADS8519IBDBG4 meets industry standards.
7.What is the process for return or replacement of ADS8519IBDBG4?
All ADS8519IBDBG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8519IBDBG4, 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 ADS8519IBDBG4 part is unused and in its original packaging.
Return procedure for ADS8519IBDBG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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