MCP3304-BI/P - 13-Bit 4-Channel 100ksps ADC | Microchip
MPN: MCP3304-BI/P ✓ AktifMCP3304-BI/P Ringkasan
An analog-to-digital converter, or ADC, converts continuously varying analog voltages into numerical values that a microcontroller or other digital controller can process. The MCP3304 belongs to the ADC and data-converter hierarchy and uses a successive-approximation register, or SAR architecture. In differential operation, each conversion references one analog input against another. In single-ended operation, the device can expose eight inputs relative to ground, giving designers flexibility in sensor and voltage-measurement circuits.
The MCP3304-BI/P provides a 13-bit conversion resolution and a maximum sampling rate of 100 ksps. Published characteristics for the MCP3304-BI family include differential nonlinearity and integral nonlinearity of no more than ±1 LSB. Its SPI serial interface supports communication with embedded controllers, while its differential inputs are useful for rejecting common-mode noise when paired with suitable front-end circuitry.
The internal SAR conversion process sequentially determines each output bit. This architecture is well suited to medium-speed measurement systems that do not require the sampling rate of a flash or pipeline ADC. The resulting combination of 13-bit resolution, four differential channels, low-power operation, and a 100 ksps maximum rate supports accurate acquisition of temperature, pressure, potentiometer, and other slowly changing analog signals.
Typical uses include battery-operated environmental sensors, remote instrumentation, industrial process monitoring, laboratory data loggers, and embedded control systems. Multiple analog inputs reduce the need for separate converter packages, while the SPI interface allows the ADC to share a serialized bus with other peripherals. Careful reference grounding and input conditioning remain important when measuring small signals.
Designers should verify the allowable analog and digital input ranges, acquisition time, reference-voltage limits, and recommended bypass-capacitor values in the manufacturer datasheet. The SPI clock and conversion timing should be coordinated with the host controller, and the analog input network should limit source impedance and switching noise. These checks are essential because timing or reference errors can undermine the apparent benefit of 13-bit resolution.
This page consolidates verified distributor pricing, technical characteristics, package information, replacement availability, and practical selection guidance. It also distinguishes a documented same-family option from unsupported cross-package substitutions, helping engineers identify a replacement without assuming that a similar ADC is automatically pin-to-pin compatible.
Pilihan pengganti yang segera untuk MCP3304-BI/P — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
MCP3304-I/P
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MCP3304-BI/P Penilaian maksimum & Ciri-ciri Elektrik
| ADC Type | Successive-approximation ADC (SAR) |
| Pemecahkatan | 13 bit |
| Maximum Sampling Rate | 100 ksps |
| Differential Input Channels | 4 channels |
| Single-Ended Input Channels | 8 channels |
| Input Type | Full differential inputs |
| Serial Interface | SPI |
| Differential Nonlinearity | ±1 LSB maximum |
| Integral Nonlinearity | ±1 LSB maximum for MCP3304-B |
| Supply Configuration | Single supply operation |
| Single-Supply Voltage | 5.5 V |
| Kemasan | 16-pin PDIP |
| Jenis Pemasangan | Through-hole |
| Status RoHS | unknown |
Panduan Konfigurasi Pin MCP3304-BI/P 16-pin pdip
Konfigurasi pin untuk MCP3304-BI/P (16-pin pdip pakai). Komponen analog ini mempunyai pin masukan, keluaran, dan kuasa. Rujuk dokumen pengeluar untuk konfigurasi pengecualian, pemulihan, dan pin aktifkan. Ideal untuk pengawasan isyarat dan litar pengukur.
Tiada data garisan pin yang diperoleh untuk MCP3304-BI/P.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
MCP3304-BI/P patut untuk 6 aplikasis: Battery-Powered Environmental Sensors, Remote Data Acquisition, Industrial Process Monitoring, Precision Potentiometer Measurement, Battery Management Monitoring, Laboratory Data Loggers.
Battery-Powered Environmental Sensors
The MCP3304-BI/P fits environmental monitoring when a design must acquire several slowly changing sensor voltages without using a high-power converter. Its four differential channels can measure paired outputs, while its eight single-ended inputs provide flexibility for temperature, humidity, pressure, or light-sensor nodes. The 13-bit resolution and 100 ksps maximum conversion rate are more than adequate for typical environmental data, and low power consumption is explicitly identified by Microchip as suitable for battery-powered systems. The practical benefit is fewer external converters and a shared SPI connection, although battery life still depends on sensor excitation and how often the host takes readings.
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Remote Data Acquisition
The MCP3304-BI/P is appropriate for remote instrumentation that digitizes several analog measurements and transfers them through a serial link. Its four differential inputs are particularly useful when a sensor produces a difference around a common-mode voltage, while the 100 ksps maximum rate provides useful margin over slow environmental and industrial signals. An SPI host can command conversions and retrieve codes without requiring a parallel ADC bus. In remote systems, selection should account for reference accuracy because a 13-bit code is meaningful only when the voltage reference and analog front end are stable.
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Industrial Process Monitoring
The MCP3304-BI/P can digitize multiple low-bandwidth process variables in industrial monitoring equipment, including pressure, temperature, and potentiometer positions. Differential input operation can help reject common-mode noise when paired with appropriately designed sensor amplifiers, while single-ended operation expands the usable channel count to eight. The 13-bit, 100 ksps SAR ADC offers adequate resolution for supervisory and control measurements without the complexity of a high-speed pipeline converter. Engineers should still verify operating-temperature limits and calibration requirements before using the part in safety-critical or long-life industrial equipment.
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Precision Potentiometer Measurement
The MCP3304-BI/P is suitable for measuring potentiometer positions where 13-bit resolution is adequate but multi-channel sampling simplifies wiring. Eight single-ended channels allow several controls to share one converter, reducing the number of external analog switches and keeping the SPI interface compact. Differential configurations can also support ratiometric sensor excitation, which helps compensate for supply and reference variations when the sensor and reference network are designed accordingly. Source impedance and acquisition timing must be checked against the manufacturer specifications to ensure the internal sampling capacitor settles accurately.
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Battery Management Monitoring
The MCP3304-BI/P can measure battery or power-system voltages in a multi-rail controller and provide 13-bit readings through four differential inputs. Differential measurement is valuable when a sensing arrangement centers two monitored points around a common reference, reducing sensitivity to shared ground offsets. The 100 ksps rate is more than sufficient for routine voltage supervision and current-sense measurement. Because safety decisions depend on accurate thresholds, the design should include reference tolerance, input filtering, calibration, and an independent protection path rather than relying on ADC resolution alone.
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Laboratory Data Loggers
The MCP3304-BI/P fits laboratory and test systems that need several measured voltages recorded at a moderate rate. Its eight single-ended inputs or four differential inputs support a mixture of bench signals, and the 100 ksps maximum conversion rate allows short bursts without requiring a high-speed ADC. A microcontroller can timestamp samples, perform scaling, and send records to a host over a communication interface. For laboratory accuracy, the input network should limit noise and source impedance, while the reference and grounding strategy should be calibrated against the required measurement uncertainty.
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Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk MCP3304-BI/P — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | MCP3304-I/P |
|---|---|---|
| Package | 16-pin PDIP | 16-pin PDIP |
| Brand | Microchip Technology | Microchip Technology |
| Resolution | 13 bit | 13 bit |
| Maximum Sampling Rate | 100 ksps | 100 ksps |
| Differential Input Channels | 4 channels | 4 channels |
| Single-Ended Input Channels | 8 channels | 8 channels |
| ADC Architecture | Successive-approximation ADC (SAR) | Successive-approximation ADC (SAR) |
| Serial Interface | SPI | SPI |
Penyeberangsung Jelas
- Four differential channels can be configured as eight single-ended inputs (vsMCP3304-I/P)
- B-grade accuracy specification is documented for the target (vsMCP3304-I/P)
- Verified distributor availability reduces sourcing uncertainty (vsMCP3304-I/P)
Catatan Desain
Follow the manufacturer datasheet when selecting the supply and reference-decoupling network. The supplied source confirms single-supply operation at 5.5 V but does not provide the complete recommended-capacitor values or operating-range details. Place the required bypass capacitors close to their associated supply or reference pins, keep the analog and digital return paths controlled, and verify dropout margin under worst-case load and temperature before finalizing the power architecture.
Allow the MCP3304's internal sample-and-hold circuit to acquire each input before asserting the start of conversion. The supplied excerpts provide the 100 ksps maximum rate but not the acquisition-time curve, so source impedance and conversion timing must be checked in the manufacturer datasheet. Use a sufficiently low-impedance input driver, limit long traces, and add filtering appropriate to the signal bandwidth rather than indiscriminately adding capacitance that could prevent the sample capacitor from settling.
Do not assume that any 13-bit SPI ADC is a drop-in replacement for the MCP3304-BI/P. A valid substitution must preserve the 16-pin PDIP footprint, SPI command and timing behavior, channel architecture, reference arrangement, supply limits, and acquisition characteristics. The verified cross-reference results do not identify a confirmed cross-brand equivalent, so prototype and review the manufacturer pinout and timing data before changing the component on an existing board.
Route analog inputs away from SPI clock and switching-node traces, and connect the analog ground reference according to the manufacturer application guidance. Place input filtering and reference components near the ADC where practical, while keeping their ground returns short and predictable. Because the supplied information does not include a complete PCB layout or pin table, consult the official MCP3304 datasheet and its reference schematics before copying an unrelated layout.
Maklumat Kesediaan
The supplied verified web excerpts identify the component as a Microchip Technology ADC but do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals compliance. AEC-Q100 is not applicable because no automotive qualification is shown.