MCP3304-CI/P - 13-Bit 8-Channel SAR ADC | Microchip Technology
Référence : MCP3304-CI/P ✓ ActifMCP3304-CI/P Présentation
An analog-to-digital converter is an integrated circuit that converts continuous voltage signals into digital values for measurement, control, or data logging. The MCP3304 belongs to the SAR ADC family, whose successive-approximation conversion method supports low power consumption and deterministic sampling suitable for battery-powered instruments, remote sensors, and industrial data acquisition. Its inputs can be configured as differential pairs for noise rejection or as single-ended channels sharing a common reference.
Key device characteristics include 13-bit resolution, four differential or eight single-ended input channels, a 100 ksps conversion rate, and single-supply operation at 5.5 V. The C-grade part is specified with maximum differential nonlinearity of ±1 LSB and maximum integral nonlinearity of ±2 LSB. These linearity figures determine how closely the converter code tracks the ideal transfer function and are important when resolving small sensor signals.
The MCP3304 uses a serial peripheral interface, or SPI, to receive conversion commands and return sampled data. Its protocol provides a simple connection to an embedded controller while supporting multiple devices on the same serial bus through chip select. The low-power architecture makes the converter suitable for remote and battery-operated acquisition systems where converter energy use is an important part of the overall measurement budget.
Typical applications include multi-channel sensor acquisition, industrial process monitoring, portable instrumentation, battery-powered measurement systems, and remote data acquisition. Differential input operation is particularly useful for bridge transducers, current loops, and other sensors whose useful signal is represented as a small voltage difference across paired inputs.
When connecting the MCP3304, keep the analog and digital grounds according to the manufacturer's layout guidance and use a clean reference source. Designers must also verify the input voltage range, acquisition timing, and the conversion code format in the manufacturer datasheet before fixing the firmware command sequence and channel-switching schedule.
This page consolidates the verified distributor and manufacturer information for the MCP3304-CI/P with package details, application guidance, comparison parameters, and a conservative assessment of drop-in replacement availability. The only verified same-footprint family alternative is identified explicitly; unverified cross-brand substitutes are not presented as drop-in replacements.
Alternatives de remplacement direct pour MCP3304-CI/P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
MCP3304-AI/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MCP3304-CI/P Valeurs maximales et caractéristiques électriques
| ADC Type | Successive-approximation register (SAR) analog-to-digital converter |
| Résolution | 13 bit |
| Conversion Throughput | 100 ksps |
| Input Configuration | 4 differential inputs or 8 single-ended inputs |
| Interface | SPI serial interface |
| Tension d'alimentation | 5.5 V single supply |
| Differential Nonlinearity | ±1 LSB maximum |
| Integral Nonlinearity, C Grade | ±2 LSB maximum |
| Boîtier | 16-pin PDIP |
| Type de montage | Through-hole |
| Temperature Grade | CI grade |
| Automotive Qualification | AEC-Q100 per verified distributor listing |
| Input Type | Full differential and single-ended |
Guide de configuration des broches du MCP3304-CI/P 16-pin pdip
Configuration des broches du MCP3304-CI/P (boîtier 16-pin pdip). 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 MCP3304-CI/P.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MCP3304-CI/P convient pour 6 applications: Battery-Powered Sensor Acquisition, Industrial Process Monitoring, Remote Data Acquisition, Precision Analog Front End, Portable Test and Measurement, Automotive and Vehicle Sensor Interfaces.
Battery-Powered Sensor Acquisition
The MCP3304-CI/P fits battery-powered sensor nodes because its 13-bit SAR architecture combines low power consumption with a 100 ksps conversion rate. Four differential or eight single-ended input configurations let one converter serve multiple resistive, voltage, or ratiometric sensors without duplicating the analog front end. Differential channels are particularly useful when the sensor output is small relative to supply noise. The design must still budget acquisition, conversion, and serial-interface energy, so check the device-specific operating and standby currents in the manufacturer datasheet before estimating battery life.
Recommandé
Industrial Process Monitoring
The MCP3304-CI/P is suitable for industrial monitoring systems that sample several analog process signals through one serial ADC. Its 100 ksps throughput provides ample performance for pressure, temperature, and position feedback, while the C-grade ordering code targets the industrial -CI/P configuration. Differential operation can reduce common-mode pickup in panel wiring, but accurate conversion still depends on a stable reference and adequate settling time. A microcontroller such as the STM32F072C8T6 can handle conversion commands, sample buffering, and communication to a supervisory controller.
Recommandé
Remote Data Acquisition
The MCP3304-CI/P works well in remote acquisition equipment where several low-energy analog measurements must be transferred over a wired digital link. The low-power SAR conversion approach suits duty-cycled sampling, and the SPI interface allows the converter to be shared with other serial peripherals. Its 13-bit resolution and maximum DNL of ±1 LSB provide useful signal fidelity for slowly varying environmental or equipment measurements. Firmware should initiate conversion at controlled intervals, verify the returned code, and avoid changing channels before the previous sample has been fully captured.
Recommandé
Precision Analog Front End
The MCP3304-CI/P can serve as the conversion stage in a precision analog front end when a transducer produces a differential voltage. The 100 ksps rate supports many process-control and instrumentation signals while the 13-bit resolution supports both slow measurements and faster sampled waveforms. The 4 differential or 8 single-ended input options let designers select channel topology based on sensor output and common-mode range. Reference quality directly affects measurement accuracy, so the reference source should be characterized for noise and drift rather than treated as an ideal voltage source.
Recommandé
Portable Test and Measurement
The MCP3304-CI/P is appropriate for portable measurement instruments that need several channels in a compact through-hole design. The combination of a 13-bit SAR ADC, 100 ksps throughput, and SPI control supports automated measurements of potentiometers, dividers, and low-level sensor outputs. Because the package is a 16-pin PDIP, it is particularly convenient for prototypes and laboratory fixtures where through-hole assembly simplifies rework. Firmware must establish the SPI mode and clock rate recommended by the manufacturer, and the analog input range must not be exceeded during probe transients.
Recommandé
Automotive and Vehicle Sensor Interfaces
The MCP3304-CI/P and its automotive-grade MCP3304-AI/P family option support vehicle sensing functions that require several analog measurements and a compact SPI ADC. The verified distributor listing associates the family with AEC-Q100 automotive qualification, while the exact -CI/P and -AI/P ordering codes determine the applicable temperature grade. The converter can digitize pressure, position, and diagnostic sensor outputs at 100 ksps throughput. Production designs should verify the exact automotive qualification, temperature limits, and AEC-Q100 classification in Microchip's current documentation before using either ordering code.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MCP3304-CI/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MCP3304-AI/P |
|---|---|---|
| Package | 16-pin PDIP | 16-pin PDIP - same package and footprint |
| Brand | Microchip Technology | Microchip Technology |
| Resolution | 13 bit | 13 bit |
| ADC Architecture | Successive-approximation register (SAR) | Successive-approximation register (SAR) |
| Input Configuration | 4 differential or 8 single-ended inputs | 4 differential or 8 single-ended inputs |
| Conversion Throughput | 100 ksps | 100 ksps |
| Interface | SPI | SPI |
| Supply | 5.5 V single supply | 5.5 V single supply |
Principaux différenciateurs
- Verified 13-bit SAR conversion with 100 ksps throughput (vs MCP3304-AI/P)
- Four differential or eight single-ended input choices (vs MCP3304-AI/P)
- Identical 16-pin PDIP footprint for family-level substitution (vs MCP3304-AI/P)
- Single 5.5 V supply with low-power family architecture (vs MCP3304-AI/P)
Notes de conception
Follow the Microchip MCP3304 layout recommendations for the analog inputs, reference connections, and grounding. Place the reference bypass capacitor close to its corresponding device pin, and keep the analog return path compact and continuous. Because the supplied data does not include the numbered application diagram, do not infer capacitor values or ground locations from generic SPI ADC layouts; confirm them in the current manufacturer datasheet.
Treat SPI clock, chip-select, data-in, and data-out connections as a compact synchronous interface with controlled return paths. The converter's 100 ksps capability does not permit arbitrary clock stretching without reviewing acquisition and conversion timing. Series termination or source-synchronized routing may be useful on a fast digital bus, but the requirement must be derived from clock rate, trace length, and the connected microcontroller's output characteristics rather than added indiscriminately.
Do not assume that every SPI ADC with the same resolution is interchangeable. MCP3304 channel multiplexing, differential-pair assignments, reference polarity, output code format, and conversion timing must match the existing firmware and PCB. The verified evidence supports only the MCP3304-AI/P as a close same-package family candidate; no cross-brand part is listed because a pin-and-timing match was not established by the supplied data.
Evaluate the complete acquisition duty cycle instead of comparing only the nominal 100 ksps conversion rate. Include controller activity, reference current, analog supply current, digital interface activity, and any sensor excitation in the battery budget. For the MCP3304-AI/P automotive alternative, include the temperature-grade difference in the qualification review; a shared package does not imply identical environmental requirements.
Informations de conformité
The verified Arrow listing associates the MCP3304-CI/P with automotive AEC-Q100. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not included in the supplied verified data and are therefore recorded as unknown.