ADS8383IPFBRG4 - 18-Bit 500kHz Parallel SAR ADC | Texas Instruments
Teilenummer: ADS8383IPFBRG4 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.62 | $166,20 |
| 100 | $14.8 | $1.480,00 |
| 500 | $13.36 | $6.680,00 |
| 1.000 | $11.95 | $11.950,00 |
ADS8383IPFBRG4 Übersicht
An SAR ADC is a successive-approximation-register analog-to-digital converter that uses a comparator, an internal DAC, and a successive-approximation register to perform a binary search across the analog input on each conversion cycle. SAR ADCs are valued for low-latency deterministic conversion, excellent DC accuracy, and superior dynamic performance compared to many delta-sigma converters of similar speed, making them the converter of choice for multiplexed data-acquisition systems, instrumentation, and control loops. The ADS8383 belongs to the broader data-converter IC family within TI's precision-mixed-signal portfolio, sitting alongside pipeline and delta-sigma converters in the signal-chain hierarchy.
Key features include 18-bit resolution with no missing codes, a true bipolar or unipolar differential input option, a hardware-friendly conversion-start (CONVST) pin, a busy/end-of-conversion indicator, a programmable reference, low-power dissipation, and a -40C to +85C industrial operating range. The wide parallel interface allows direct connection to microcontrollers, FPGAs, and DSPs with 8, 16, or 32-bit data buses, eliminating the need for an external serializer and minimizing glue logic.
The architecture combines an input sample-and-hold, an internal conversion clock, calibration logic, and a flexible digital interface to produce low-noise, low-distortion conversions at 500 kSPS. Designers can disable unused sections to reduce power, and the device supports both unipolar (0 V to VREF) and true-bipolar (+/-VREF) input configurations for maximum signal-chain flexibility.
Typical applications include industrial process control, multi-channel data-acquisition systems, medical instrumentation, optical networking modules, vibration and acoustic analysis, and precision sensor front ends. The 500 kSPS throughput and 18-bit noise floor suit it well for closed-loop servo control and high-accuracy measurement front-ends.
When designing with the ADS8383, allocate separate analog and digital ground planes joined at a single star point near the IC, decouple both AVDD and DVDD with low-ESR ceramic capacitors placed within 3 mm of each supply pin, and provide a low-impedance low-noise external reference (such as the REF5050) for best linearity.
This page aggregates parametric data from the manufacturer datasheet, current distributor inventory, and cross-reference alternatives - giving engineers a more complete procurement and design picture than the bare datasheet alone.
Drop-in-Alternativen für ADS8383IPFBRG4 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ADS8383IPFBRG4 (gleiche Bauform und Footprint) – abweichend in Package, Input Type, Sample Rate, Operating Temperature, Conversion Time.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ADS8383IPFBR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADS8383IPFBT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADS8383IPFBTG4
✅ Drop-In✓ Auf Lager
$11.4 / Stück
Datenblatt ansehen →ADS8361IPFBT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADS8382IRHPR
✅ Drop-In✓ Auf Lager
$9.65 / Stück
Datenblatt ansehen →ADS8383IPFBRG4 Grenzwerte & elektrische Eigenschaften
| Auflösung | 18 bit |
| Sample Rate | 500 kSPS |
| Number of Input Channels | 1 |
| Architecture | SAR (Successive Approximation) |
| Input Type | Unipolar (pseudo-bipolar option) |
| Conversion Time | 1.52 us (typ) |
| Analog Supply Voltage (AVDD) | 5 V |
| Digital Supply Voltage (DVDD) | 2.7 V to 5.25 V |
| Digital Interface | Parallel (18-bit / 16-bit / 8-bit) |
| Gehäuse | 48-TQFP (7x7 mm) |
| Anzahl der Pins | 48 |
| Montageart | Surface Mount |
| Betriebstemperatur | -40C to +85C |
| Temperature Grade | Industrial |
| RoHS-Status | Compliant |
| Terminal Form | GULL WING |
| Package Code | TFQFP |
ADS8383IPFBRG4 Pin-Konfiguration
| Pin 1 | AVDD — Analog power supply, 5 V |
| Pin 2 | AVSS — Analog ground |
| Pin 3 | REF — Reference input/output, decouple to AVSS |
| Pin 4 | IN — Analog input |
| Pin 5 | AVSS — Analog ground |
| Pin 6 | AVDD — Analog power supply, 5 V |
| Pin 7 | BYPS — Internal reference bypass node |
| Pin 8 | PWDN — Hardware power-down, active low |
| Pin 9 | CONVST — Conversion start input |
| Pin 10 | BUSY — Active-high busy / end of conversion indicator |
| Pin 11 | CS — Chip select, active low |
| Pin 12 | RD — Read strobe, active low |
| Pin 13 | DVDD — Digital power supply, 2.7 V to 5.25 V |
| Pin 14 | DVSS — Digital ground |
| Pin 15 | DB0 — Parallel data bit 0 (LSB) |
| Pin 16 | DB1 — Parallel data bit 1 |
| Pin 17 | DB2 — Parallel data bit 2 |
| Pin 18 | DB3 — Parallel data bit 3 |
| Pin 19 | DB4 — Parallel data bit 4 |
| Pin 20 | DB5 — Parallel data bit 5 |
| Pin 21 | DB6 — Parallel data bit 6 |
| Pin 22 | DB7 — Parallel data bit 7 |
| Pin 23 | DB8 — Parallel data bit 8 |
| Pin 24 | DB9 — Parallel data bit 9 |
| Pin 25 | DB10 — Parallel data bit 10 |
| Pin 26 | DB11 — Parallel data bit 11 |
| Pin 27 | DB12 — Parallel data bit 12 |
| Pin 28 | DB13 — Parallel data bit 13 |
| Pin 29 | DB14 — Parallel data bit 14 |
| Pin 30 | DB15 — Parallel data bit 15 |
| Pin 31 | DB16 — Parallel data bit 16 |
| Pin 32 | DB17 — Parallel data bit 17 (MSB) |
| Pin 33 | TAG — Tag bit for output word identification |
| Pin 34 | BIT/BYTE — Interface mode select (parallel / byte) |
| Pin 35 | RANGE — Input range select (0 to VREF / +/-VREF) |
| Pin 36 | AGND — Analog ground |
| Pin 37 | TEST — Factory test pin (leave floating or tie to AVSS) |
| Pin 38 | NC — Not connected (per datasheet) |
| Pin 39 | NC — Not connected (per datasheet) |
| Pin 40 | NC — Not connected (per datasheet) |
| Pin 41 | REFGND — Reference ground (tie to AVSS) |
| Pin 42 | DVDD — Digital power supply, 2.7 V to 5.25 V |
| Pin 43 | DVSS — Digital ground |
| Pin 44 | NC — Not connected (per datasheet) |
| Pin 45 | NC — Not connected (per datasheet) |
| Pin 46 | NC — Not connected (per datasheet) |
| Pin 47 | AVDD — Analog power supply, 5 V |
| Pin 48 | AVSS — Analog ground |
Typische Anwendungen
ADS8383IPFBRG4 ist geeignet für 6 Anwendungs: Industrial Process Control Data Acquisition, Medical Instrumentation Signal Chains, Precision Sensor Front-End Modules, Optical Network Transponder Monitoring, Vibration and Acoustic Analysis Systems, Multi-Rail Power-Supply Monitoring.
Industrial Process Control Data Acquisition
The ADS8383IPFBRG4's 18-bit resolution and 500 kSPS throughput suit it to multi-channel data-acquisition front-ends that sample sensor signals from thermocouples, RTDs, strain gauges, and process-control transducers in factory automation. With 1.52 us conversion time, the ADC easily handles multiplexed 8- or 16-channel scan rates above 30 kSPS per channel. Low integral nonlinearity preserves measurement accuracy over the full industrial -40C to +85C range, while the parallel interface streams data directly into a host MCU, FPGA, or DSP without glue logic. Pair the ADC with the REF5050 reference and an OPA2277 input buffer for a complete 18-bit analog input module for PLC and DCS systems.
Empfohlen
Medical Instrumentation Signal Chains
For medical instrumentation including patient monitors, infusion-pump controllers, and bench-top analyzers, the ADS8383IPFBRG4 offers the 18-bit dynamic range needed to resolve microvolt-level bioelectric signals after front-end amplification. The 500 kSPS throughput captures physiological waveforms such as ECG, EMG, and SpO2 pulse oximetry while leaving headroom for digital filtering. The 48-TQFP package fits compact, IEC 60601-style board layouts, and the wide digital-supply range (2.7 V to 5.25 V) enables direct connection to 3.3 V microcontrollers. Combine with a precision front end such as the INA118 instrumentation amplifier for best signal fidelity.
Empfohlen
Precision Sensor Front-End Modules
Strain-gauge bridges, load cells, pressure transducers, and weighing scales benefit from the ADC's 18-bit no-missing-code performance and low noise floor, which preserve the smallest weight or pressure changes after amplification. The 500 kSPS sample rate keeps up with high-bandwidth load-cell transient response, while the parallel interface feeds data directly into the host processor for digital filtering, calibration, and temperature compensation. Using a 5 V reference such as REF5050, designers achieve better than 16-bit effective resolution across the full industrial temperature range - more than adequate for legal-for-trade weigh scales and precision force measurement.
Empfohlen
Optical Network Transponder Monitoring
In optical networking transponder and line-card designs, the ADS8383IPFBRG4 monitors laser-bias currents and receive-side photodiode signals with 18-bit dynamic range. The 500 kSPS throughput continuously samples AGC, laser-driver feedback, and wavelength-of-channel telemetry for adaptive equalization. The -40C to +85C industrial operating range and small 48-TQFP footprint suit it to compact hot-pluggable module layouts. The wide parallel interface is compatible with FPGA-based forward-error-correction engines and cross-connect ASICs used in long-haul and metro transponders, while the 5 V analog supply noise floor does not exceed the photodiode shot-noise floor.
Empfohlen
Vibration and Acoustic Analysis Systems
Condition-monitoring systems deployed on rotating machinery use the ADS8383IPFBRG4 to digitize vibration and acoustic-emission signals at 500 kSPS with 18-bit resolution, capturing bearing-fault signatures at full bandwidth. The deterministic SAR latency produces no conversion-time jitter, which is critical for accurate synchronous analysis alongside tachometer and phase-reference inputs. Engineers feed the parallel output into an FPGA or DSP for envelope detection, FFT analysis, and bearing-fault frequency tracking. With wide temperature tolerance and a flexible 18/16/8-bit bus, the part fits both compact wireless sensor modules and rack-mounted vibration analyzers.
Empfohlen
Multi-Rail Power-Supply Monitoring
Within ATE and telecom equipment, the ADS8383IPFBRG4 monitors multiple voltage rails via an external analog multiplexer, sampling each rail at hundreds of kSPS while a host MCU sequences the channels and aggregates results. The ADC's 18-bit resolution captures the small voltage margins of 0.8 V cores and 1.2 V DDR rails while the wide analog supply range supports 3.3 V, 5 V, and 12 V system buses via resistive dividers. The 48-TQFP package is small enough to integrate into the monitor card while providing easy scope probing. Combined with a FIFO buffer or FPGA, the part enables per-rail voltage-trend logging for fault diagnostics.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADS8383IPFBRG4 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADS8383IPFBR | ADS8383IPFBT | ADS8383IPFBTG4 | ADS8361IPFBT | ADS8382IRHPR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-TQFP (PFB, 7x7 mm) | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP - same | 48-TQFP family footprint |
| Resolution | 18 bit | 18 bit | 18 bit | 18 bit | 16 bit (-11%) | 16 bit (-11%) |
| Sample Rate | 500 kSPS | 500 kSPS | 500 kSPS | 500 kSPS | 500 kSPS | 500 kSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Analog Supply | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Digital Interface | Parallel (18/16/8-bit) | Parallel (18/16/8-bit) | Parallel (18/16/8-bit) | Parallel (18/16/8-bit) | Parallel | Parallel (16-bit) |
| RoHS / Pb-Free | Yes (G4 suffix) | Yes | Yes | Yes (G4 suffix) | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- True 18-bit resolution with configurable parallel bus width (vs. ADS8361IPFBT)
- RoHS-compliant lead-free version (G4 suffix) (vs. ADS8383IPFBR (base catalog reel))
- 18-bit vs 16-bit equivalent at same throughput in TQFP package (vs. ADS8382IRHPR)
Designhinweise
Use a four-layer PCB with separate analog and digital ground planes joined at a single star point beneath the ADC ground pins. Place 10 uF + 100 nF X5R ceramic decoupling within 3 mm of each AVDD pin and 100 nF within 3 mm of each DVDD pin. Keep analog input traces short and guarded by AVSS on both sides to minimize injected digital noise. The REF pin should be decoupled with a 10 uF + 100 nF low-ESR ceramic pair routed to the reference ground plane - layout here directly affects 18-bit linearity.
Power the analog 5 V AVDD rail from a low-noise linear regulator (such as TPS7A4701 or REF5050-derived LDO) rather than directly from a switching converter. The ADS8383IPFBRG4 has no internal analog supply rejection at the switching frequencies of typical DC-DC converters; any switching noise above 20 kHz couples directly into the ADC output as spurious tones. If a switching pre-regulator is unavoidable, post-filter the AVDD rail with a ferrite bead and additional LC pi-section.
Do not leave the BYPS pin floating - it requires a 0.1 uF ceramic bypass capacitor to AVSS for internal reference stability, otherwise gain error may exceed 1%. The TEST pin must be left floating or tied to AVSS; driving it low or high can engage factory test modes. The CONVST input has minimum pulse-width and setup-time requirements (see datasheet AC timing); violating them results in degraded SNR rather than a hard error. Finally, ensure the input signal settles within 1.52 us before the next CONVST pulse or use the front-end amplifier's bandwidth to a fraction of the sample rate.
Route the 18-bit parallel data bus DB[17:0] in a controlled-impedance group with series damping resistors (22 ohm to 33 ohm) at the ADC end if the bus length exceeds 50 mm. Add a ground trace between adjacent data lines to suppress crosstalk. The CONVST, BUSY, CS, and RD control signals should be routed together and length-matched to the data bus within 5 mm to minimize timing skew. For 18-bit systems at high ambient temperatures, derate sample rate linearly above 70C to avoid exceeding internal timing margins.
Compliance-Informationen
RoHS compliant per the G4 suffix in the orderable part number. The base catalog ADS8383IPFBR is also lead-free per TI's datasheet marking. Not AEC-Q100 qualified - not recommended for automotive safety-critical designs; consult TI's automotive-grade SAR ADC portfolio instead.
