AD976ABR - 16-Bit 200 kSPS ADC | Analog Devices | SOIC-28
Référence : AD976ABR ✓ ActifAD976ABR Présentation
An ADC converts an analog voltage into a digital value. Within the broader semiconductor hierarchy, the AD976ABR is a data-converter IC and specifically a successive-approximation, or SAR, ADC. SAR converters repeatedly compare the sampled input with a reference and internal bit weights, making them well suited to instrumentation, industrial measurement, communications, and control systems where accurate conversion and predictable parallel data output are required.
Key features include 16-bit resolution, 200 kSPS throughput, operation from one 5 V supply, a factory-calibrated analog section, and a high-speed parallel interface. The input range extends to 10 V maximum according to the verified distributor listing, while the converter offers a choice of internal or external 2.5 V reference. Its specified linearity error is 0.0031%, and maximum power dissipation is listed as 100 mW.
The AD976A architecture combines a switched-cap ADC core, an accurate reference, and an on-chip clock. Factory calibration and testing address signal-to-noise ratio, total harmonic distortion, offset, gain, and linearity. This integration reduces the number of external timing and reference components required in a 16-bit acquisition circuit while preserving a direct, parallel data path.
Typical applications include digital instrumentation, industrial process measurement, communications equipment, data acquisition, control systems, and precision test equipment. The AD976ABR is particularly suitable where a 200 kSPS conversion rate and 16-bit code width must coexist with a conventional 5 V analog supply and parallel digital interface.
Designers should follow the manufacturer's pinout and application guidance for input-range, reference, clock, and bypass-capacitor configuration. Input settling, source impedance, analog-noise placement, digital-interface timing, and thermal performance require PCB attention because acquisition accuracy depends on the complete analog signal path rather than conversion resolution alone.
This product record consolidates the verified manufacturer and distributor data, distinguishes available family alternatives, and adds practical selection and design guidance that are not presented as a single manufacturer-datasheet summary.
Alternatives de remplacement direct pour AD976ABR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec AD976ABR (même facteur de forme et même empreinte) — différant par Input Range, Package, Supply Voltage, Architecture, Interface.
AD976AARZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AD976AERZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AD976ARRZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AD976ABR Valeurs maximales et caractéristiques électriques
| Converter Type | Successive-approximation ADC |
| Résolution | 16 bit |
| Fréquence d'échantillonnage | 200 kSPS |
| Analog Input Channels | 1 channel |
| Tension d'alimentation | 5 V |
| Number of Supply Rails | 1 rail |
| Input Range | 0 V to 10 V maximum |
| Maximum Analog Input Voltage | 10 V |
| Tension de référence | 2.5 V internal or external |
| Digital Interface | High-speed parallel |
| On-Chip Clock | Yes |
| Process Technology | Proprietary BiCMOS |
| Linearity Error | 0.0031% |
| Maximum Power Dissipation | 100 mW |
| Factory Calibration | Yes; SNR, THD, offset, gain, and linearity tested |
| Boîtier | 28-lead SOIC |
| Type de montage | Surface mount |
| Statut RoHS | unknown |
| REACH Status | unknown |
Guide de configuration des broches du AD976ABR 28-lead soic
Configuration des broches du AD976ABR (boîtier 28-lead soic). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour AD976ABR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
AD976ABR convient pour 6 applications: Industrial Process Measurement, Communications Receiver, Precision Data Acquisition, Test and Measurement Instrumentation, Industrial Control Systems, Signal Monitoring Systems.
Industrial Process Measurement
The AD976ABR fits industrial process-measurement systems that sample sensors operating within the converter's 0 V to 10 V maximum analog-input range. Its 16-bit resolution preserves fine measurement detail, while the 200 kSPS throughput supports more frequent updates than a 100 kSPS AD976 variant. The single 5 V supply and integrated 2.5 V reference option simplify analog power architecture. Place the converter close to the front end and route the high-speed parallel bus away from sensitive input and reference nodes to reduce switching and ground-bounce coupling.
Recommandé
Communications Receiver
The AD976ABR is appropriate for communications receivers requiring a 16-bit conversion path and an update rate up to 200 kSPS. Its high-speed parallel interface permits direct connection to digital logic or a FPGA-based demodulator, while the on-chip clock reduces external timing-component count. The 5 V supply and integrated reference options simplify implementation in compact receiver hardware. Layout should separate the sensitive analog input and reference traces from the fast digital outputs, and supply bypassing should follow the manufacturer's recommended circuit.
Recommandé
Precision Data Acquisition
The AD976ABR supports precision data-acquisition equipment where 16-bit code width and 200 kSPS throughput are both useful. Its factory-calibrated ADC, reference, and clock provide an integrated acquisition front end, and the parallel output can feed counters, DSP logic, or FPGA fabric with minimum serial-interface overhead. System accuracy also depends on input settling and noise control, so the converter should be placed near the signal source and separated from switching regulators and digital return currents.
Recommandé
Test and Measurement Instrumentation
The AD976ABR can serve as the sampling stage in bench and production test equipment that repeatedly measures analog waveforms or sensor outputs. Its 200 kSPS rate allows twice the nominal update rate of the 100 kSPS AD976 family while retaining 16-bit resolution. The integrated clock and selectable 2.5 V reference reduce external circuit complexity, while the parallel interface supports fast sample transfer into processing logic. Careful grounding and short analog traces are important for preserving the converter's calibrated performance.
Recommandé
Industrial Control Systems
The AD976ABR is suitable for feedback and monitoring blocks in industrial control systems that need faster and more detailed analog measurements than a 100 kSPS AD976 provides. Its 16-bit SAR architecture, 5 V operation, and parallel data interface align with control processors and programmable logic. The converter can monitor transducers or system rails while supplying sampled values to control algorithms. Designers should account for acquisition timing, source settling, and digital-bus coupling so sampled control data remains accurate.
Recommandé
Signal Monitoring Systems
The AD976ABR is appropriate for signal-monitoring equipment that must capture changing analog conditions at a higher update rate. With 16-bit resolution and 200 kSPS throughput, it provides more frequent observations than the 100 kSPS AD976 while retaining the same basic single-supply architecture. The on-chip clock and integrated reference improve design consistency, and the parallel output enables rapid transfer into thresholding, filtering, or alarm logic. Analog input routing should remain short and shielded from high-current switching paths.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AD976ABR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AD976AARZ | AD976AERZ | AD976ARRZ |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 28-lead SOIC | 28-lead SOIC | 28-lead SOIC | 28-lead SOIC |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Converter Architecture | Successive-approximation ADC | Successive-approximation ADC | Successive-approximation ADC | Successive-approximation ADC |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Reference | 2.5 V internal or external | 2.5 V internal or external | 2.5 V internal or external | 2.5 V internal or external |
| Digital Interface | High-speed parallel | High-speed parallel | High-speed parallel | High-speed parallel |
| On-Chip Clock | Yes | Yes | Yes | Yes |
Principaux différenciateurs
- Faster throughput than the original AD976 family (vs AD976ARZ)
- Same AD976A family architecture as the closest drop-in candidate (vs AD976AARZ)
- Integrated reference and clock reduce external circuitry (vs AD976AERZ)
- Direct high-speed parallel data path (vs AD976ARRZ)
Notes de conception
Place the AD976ABR close to the analog source and reference network to minimize settling error and parasitic capacitance on the input path. Keep the 16-bit parallel output traces away from the analog input, reference, and on-chip-clock connections. The supplied data does not contain the complete recommended layout, so engineers should follow the pin and application information in the official AD976/AD976A datasheet before releasing the PCB.
The AD976ABR combines a sensitive SAR ADC with a high-speed parallel interface, making return-current control essential. Use a continuous ground reference under and around the converter, route digital outputs away from the analog section, and avoid sharing narrow return paths between the parallel bus and reference circuitry. Grounding and via arrangements should be checked against the manufacturer's recommended layout and the actual switching activity of the connected digital device.
The converter operates from a single 5 V supply, but the complete analog system still requires low-noise supply distribution. Follow the official datasheet for input, output, reference, and bypass-capacitor values rather than estimating them from generic ADC practice. Place required bypass components at the associated pins with short traces, and keep switching-regulator and digital-supply return currents from flowing beneath the analog input and reference paths.
Do not treat the 28-pin SOIC footprint as sufficient proof of interchangeability. The AD976AARZ, AD976AERZ, and AD976ARRZ candidates share the family architecture and package, but ordering suffixes may identify different grades or operating conditions. Before replacing the AD976ABR, compare the complete electrical tables, pin descriptions, temperature range, reference behavior, and digital timing from the official manufacturer documentation.
Informations de conformité
The supplied manufacturer and distributor excerpts do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status; no compliance claim has been inferred.