ADS8519IDBR - 16-Bit 250kSPS SAR ADC | Texas Instruments
MPN: ADS8519IDBR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $16.92 | $16.92 |
| 10 | $15.23 | $152.30 |
| 100 | $13.62 | $1,362.00 |
| 500 | $12.26 | $6,130.00 |
| 1,000 | $14.27 | $14,270.00 |
Drop-in alternatives for ADS8519IDBR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADS8519IDBR-Q1
✅ Drop-In✓ In Stock
$10.05 / Unit
View Datasheet →ADS8519IDBRG4
✅ Drop-In📋 Reference alternative (not in catalog)
ADS8519IDBG4
✅ Drop-In📋 Reference alternative (not in catalog)
ADS8519IDBR Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Sampling Rate | 250 kSPS |
| Architecture | SAR (successive approximation register), CMOS |
| Number of Inputs | 1 |
| Input Ranges | 8.192V, ±5V, ±10V |
| SNR | 93 dB with 20kHz input |
| INL | ±1.5 LSB max |
| DNL | ±1 LSB max, 16 bits no missing codes |
| Internal Reference | 4.096 V (also supports 8.192V input range) |
| Interface | SPI-compatible serial output with daisy-chain (TAG) and 3-state bus |
| Analog Supply | 5 V |
| I/O Supply | 1.65 V to 5.25 V |
| Power Dissipation | 110 mW typical at 250kSPS |
| Sample-and-Hold | Integrated |
| Clock | Internal (external clock option via EXT/INT pin) |
| Operating Temperature | -40C to +85C |
| Package | 28-SSOP (DB) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ADS8519IDBR Pin Configuration
| Pin 1 | +VA — Analog supply, 5V |
| Pin 2 | AGND — Analog ground |
| Pin 3 | VIN — Analog input (8.192V, ±5V, ±10V ranges) |
| Pin 4 | REF — Reference input/output, internal 4.096V |
| Pin 5 | CAP — Reference bypass capacitor |
| Pin 6 | RST — Reset input for serial data timing |
| Pin 7 | SB/BTC — Serial data format select (straight binary / binary two's complement) |
| Pin 8 | EXT/INT — Clock select: internal or external clock |
| Pin 9 | +VBD — I/O buffer supply, 1.65V to 5.25V |
| Pin 10 | DGND — Digital ground |
| Pin 11 | SYNC — Sync frame output |
| Pin 12 | DATACLK — Serial data clock |
| Pin 13 | DATA — Serial data output |
| Pin 14 | TAG — Tag input for daisy-chain mode |
| Pin 15 | CS — Chip select |
| Pin 16 | RD — Read control |
| Pin 17 | BUSY — Conversion in progress indicator |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADS8519IDBR is suitable for 6 applications: Industrial Process Control, Multi-Channel Data Acquisition Systems, Medical Instrumentation, Test and Measurement Equipment, Power Quality and Energy Monitoring, Automotive Test and Control Modules.
Industrial Process Control
The ADS8519IDBR fits industrial process control because its ±10V and ±5V input ranges directly accept standard industrial transducer signals without external scaling front-ends, and its 93dB SNR with ±1.5LSB INL resolves microvolt-level changes in pressure, flow, and temperature loops. In a typical PLC analog input card, the SAR converter delivers a fresh 16-bit result every 4 microseconds at 250kSPS with zero pipeline latency, important for closed-loop control timing. Its SPI-compatible serial output with daisy-chain TAG mode lets several ADCs share a single controller data line, reducing connector and isolator count across channels.
Recommended
Multi-Channel Data Acquisition Systems
For multi-channel DAQ racks, the ADS8519IDBR offers a compelling mix of throughput and integration: the internal 4.096V reference and internal clock remove external precision components per channel, cutting BOM cost and calibration effort. Each channel digitizes at up to 250kSPS with 16-bit no-missing-codes accuracy, and the daisy-chain (TAG) serial output allows a single SPI port to read a chain of converters, simplifying FPGA or MCU firmware. The 1.65V to 5.25V I/O supply range interfaces directly with 3.3V FPGAs without level translators, while 110mW typical dissipation keeps dense-card thermal budgets manageable.
Recommended
Medical Instrumentation
Medical diagnostic and monitoring equipment benefits from the ADS8519IDBR's wide dynamic range: 93dB SNR at 20kHz input captures both large baseline signals and small physiological variations, while ±1LSB DNL and 16-bit no-missing-codes operation guarantee monotonic transfer characteristics required for trustworthy patient data. The integrated sample-and-hold accurately captures fast biosignal waveforms without external circuitry. At 110mW typical power consumption, the converter suits portable and battery-operated medical devices, and the -40C to +85C industrial temperature range covers sterilization-adjacent operating environments.
Recommended
Test and Measurement Equipment
Bench instruments, data loggers, and automated test equipment use the ADS8519IDBR where a single high-accuracy digitizer channel is needed. The ±10V input range matches conventional instrument signal levels, and 93dB SNR provides roughly 15 effective noise-free bits for waveform capture. The zero-latency SAR architecture lets trigger systems act on each sample immediately, unlike pipeline converters. The internal reference and clock shorten calibration procedures during manufacturing, and the 3-state serial bus simplifies connection to processor parallel-to-serial bridges in rack-based instrument backplanes.
Recommended
Power Quality and Energy Monitoring
Power-quality analyzers and substation monitoring units leverage the ADS8519's ±10V bipolar range and 250kSPS rate to sample line-voltage and current-transformer waveforms at 5ksps-per-cycle rates with ample headroom for harmonics analysis. The 93dB SNR resolves small harmonic components riding on large fundamental signals, supporting THD computations to the 15th order. Zero conversion latency keeps all channels of a three-phase system phase-coherent when sampling synchronously, and the industrial temperature rating plus low 110mW power suits sealed outdoor metering enclosures.
Recommended
Automotive Test and Control Modules
For automotive-oriented designs, the pin-compatible ADS8519IDBR-Q1 variant brings the same 16-bit, 250kSPS, 93dB-SNR performance with AEC-Q100 qualification, fitting engine-dyno data loggers, battery-test racks, and onboard diagnostic equipment. The ±5V and ±10V ranges accept sensor and actuator signal levels directly, while the SPI-compatible serial link with daisy-chain mode consolidates wiring harnesses in distributed measurement nodes. The wide 1.65V to 5.25V I/O range connects to automotive 3.3V and 5V microcontrollers such as the TMS320F28034QPNTQ1 without level-shifting circuitry.
Recommended
Recommended Products Summary
Engineering reference data for ADS8519IDBR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS8519IDBR-Q1 | ADS8519IDBRG4 | ADS8519IDBG4 |
|---|---|---|---|---|
| Package | 28-SSOP (DB) | 28-SSOP (DB) - same | 28-SSOP (DB) - same | 28-SSOP (DB) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 250 kSPS | 250 kSPS | 250 kSPS | 250 kSPS |
| SNR | 93 dB (20kHz input) | 93 dB | 93 dB | 93 dB |
| Input Ranges | 8.192V, ±5V, ±10V | 8.192V, ±5V, ±10V | 8.192V, ±5V, ±10V | 8.192V, ±5V, ±10V |
| Operating Temperature | -40C to +85C | -40C to +125C (AEC-Q1 grade per qualification level) | -40C to +85C | -40C to +85C |
| Automotive Grade | No | Yes (AEC-Q100) | No | No |
| Price (qty 1, as of 2026-08-29) | ~$16.92 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Wide native input ranges without front-end scaling (vs ADS1258)
- Automotive variant available on the same footprint (vs ADS8519IDBR-Q1)
- Zero-latency SAR conversion (vs ADS127L11)
Design Notes
Decouple the 5V analog supply with 0.1µF and 10µF ceramic capacitors placed within 5mm of the +VA and AGND pins, and bypass the REF/CAP pin with 10µF plus 0.1µF in parallel. Use solid ground planes rather than traces for AGND and DGND returns; the 16-bit result loses effective bits quickly when ground bounce couples into the reference.
Drive VIN from a low-impedance source (op-amp buffer such as OPA211 or OPA827) since the integrated sample-and-hold draws transient charge at each acquisition; a series resistor of 50 ohms or less plus a small charge-kickback capacitor at the input improves settling. Keep the serial DATACLK and DATA traces short and away from VIN to prevent clock coupling into the analog path.
Configure the SB/BTC pin before system commissioning: misreading straight binary as two's complement produces sign-inverted data on bipolar ±5V/±10V ranges. Do not exceed the reference bypass requirements when using the internal 4.096V reference - omitting the 10µF CAP capacitor degrades noise and INL. Verify EXT/INT pin state: leaving it floating when an external clock is expected causes erratic conversion timing.
Compliance Information
RoHS compliant per TI product page; the G4 suffix denotes TI green/eco packaging. AEC-Q100 applies to the ADS8519IDBR-Q1 variant, not the standard part.
