MCP3561R-E/ST - 24-Bit Low-Noise Delta-Sigma ADC | Microchip
Teilenummer: MCP3561R-E/ST ✓ AktivMCP3561R-E/ST Übersicht
A delta-sigma ADC is a type of sigma-delta analog-to-digital converter that uses oversampling, digital filtering, and noise shaping to convert an analog input into a high-resolution digital value. Delta-sigma ADCs belong to the data-converter and signal-acquisition IC categories and are widely used when high resolution, low noise, and good rejection of low-frequency disturbances are more important than very high conversion rates.
The MCP3561R-E/ST provides 24-bit resolution, selectable input configurations for two single-ended channels or one differential channel, and a maximum programmable data rate of 153.6 kSPS. Its integrated voltage reference and oscillator reduce the number of external components required for standalone measurement systems. Burnout-current detection provides a way to identify open or failed sensor connections, while the integrated temperature sensor supports temperature-related diagnostics.
The device uses the SPI serial interface for digital communication. Differential operation reduces sensitivity to common-mode voltage and helps improve rejection of external interference when the sensor output is referenced to a defined return path. Single-ended operation provides flexibility for systems that must measure two independent sensor voltages. The internal reference, oscillator, and conversion features help minimize board area and system cost.
Typical uses include industrial sensor acquisition, pressure and temperature monitoring, process-control instrumentation, portable measurement systems, and low-noise analog front ends. For battery-powered equipment, the integrated reference and oscillator can simplify power-supply design, although operating mode and data rate still determine average current consumption. Differential wiring is generally preferable when the sensor can provide a complementary output.
PCB design should keep the analog input, reference, and ground paths short, while placing decoupling capacitors close to the supply and ground pins. Route SPI signals away from sensitive analog inputs and use a quiet, low-impedance ground reference. Confirm the required conversion latency, output data rate, input range, and calibration approach before fixing the system sample rate.
This page combines manufacturer specifications, application guidance, package details, and drop-in replacement analysis to support component selection and PCB replacement decisions. The alternatives listed share the intended 20-pin TSSOP footprint, while final design-in decisions should confirm electrical limits, pin functions, qualification status, and timing against the latest manufacturer documentation.
Drop-in-Alternativen für MCP3561R-E/ST – 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 MCP3561R-E/ST (gleiche Bauform und Footprint) – abweichend in Operating Temperature Range.
MCP3561-E/ST
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →MCP3561RT-E/ST
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MCP3562R-E/ST
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →MCP3564R-E/ST
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →MCP3464T-E/ST
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →MCP3561R-E/ST Grenzwerte & elektrische Eigenschaften
| ADC Type | 24-bit Delta-Sigma ADC |
| Auflösung | 24 bit |
| Input Configuration | 2 single-ended or 1 differential input |
| Maximum Data Rate | 153.6 kSPS |
| Digital Interface | SPI |
| Internal Voltage Reference | Integrated |
| Internal Oscillator | Integrated |
| Temperature Sensor | Integrated |
| Burnout Sensor Detection | Integrated |
| Gehäuse | 20-pin TSSOP |
| Pin-Anzahl | 20 pins |
| Betriebstemperaturbereich | -40°C to +125°C |
| Lebenszyklusstatus | Active |
| RoHS-Status | Compliant |
| Manufacturer Product Family | MCP3561/2/4R |
| Product Type | Data Acquisition IC |
| Montageart | Surface Mount |
| Lead Time | 3-7 business days |
MCP3561R-E/ST 20-pin tssop Pinbelegungsleitfaden
Pinbelegung für MCP3561R-E/ST (20-pin tssop-Gehäuse). Dieses analoge Bauteil verfügt über Eingangs-, Ausgangs- und Versorgungspins. Offset-Null-, Kompensations- und Enable-Pin-Konfigurationen entnehmen Sie dem Herstellerdatenblatt. Ideal für Signalaufbereitung und Verstärkerschaltungen.
Keine detaillierten Pinbelegungsdaten verfügbar für MCP3561R-E/ST.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
MCP3561R-E/ST ist geeignet für 6 Anwendungs: Industrial Pressure Sensor Acquisition, Temperature Monitoring Systems, Portable Environmental Instruments, Battery-Powered Sensor Nodes, Process Control and Data Logging, Precision Analog Sensor Interfaces.
Industrial Pressure Sensor Acquisition
The MCP3561R-E/ST fits industrial pressure and process-sensor front ends that require 24-bit resolution without a high-bandwidth successive-approximation converter. Its differential input can accept a sensor bridge or transmitter signal as a complementary pair, helping reject common-mode voltage and board noise. The maximum 153.6 kSPS output rate supports continuous process monitoring while the integrated internal reference, oscillator, and burnout detection reduce external circuitry. A practical design should use short input traces, a quiet analog ground region, and differential routing wherever the sensor supports it.
Empfohlen
Temperature Monitoring Systems
The MCP3561R-E/ST is appropriate for precision temperature-monitoring systems that combine an external analog sensor with digital diagnostics. Its 24-bit delta-sigma conversion supports fine resolution, while the selectable 153.6 kSPS data rate provides flexibility between measurement speed and noise filtering. The integrated temperature sensor and burnout detection can add device-level temperature information and open-circuit diagnostics without separate components. For thermocouple or RTD systems, the external front-end and linearization circuitry remain essential because the ADC itself does not directly perform those sensor-specific functions.
Empfohlen
Portable Environmental Instruments
The MCP3561R-E/ST suits portable environmental instruments where low component count, low noise, and compact conversion are valuable. The integrated voltage reference and internal oscillator can simplify the analog subsystem, while the 20-pin TSSOP package supports dense PCB layouts. Two single-ended inputs allow an instrument to monitor more than one environmental quantity, or the ADC can operate differentially for improved interference rejection. Firmware should select a data rate and digital-filter setting that fit the battery budget and the required measurement latency.
Empfohlen
Battery-Powered Sensor Nodes
The MCP3561R-E/ST can form the measurement core of a battery-powered sensor node that must preserve small signal detail while operating with limited board area. Its internal reference, oscillator, and burnout detection reduce the number of external support components, and the SPI interface connects efficiently to a low-power embedded controller. The ADC does not specify a fixed average current in the available product information, so the system designer should calculate the duty cycle from the selected output rate, conversion mode, and reference arrangement. Sleep periods and separate analog-domain shutdown strategy remain important system-level optimizations.
Empfohlen
Process Control and Data Logging
The MCP3561R-E/ST is well matched to process-control and laboratory data-logging systems that prioritize resolution and repeatability over waveform capture. Two single-ended inputs can monitor pressure and temperature channels, while differential operation can improve measurement integrity for bridge-based sensors. The 24-bit converter and programmable data rate up to 153.6 kSPS provide ample bandwidth for slow industrial variables. Firmware should use the digital filter and data-ready mechanism to establish a deterministic sampling schedule, and the PCB should maintain separated analog and digital return paths.
Empfohlen
Precision Analog Sensor Interfaces
The MCP3561R-E/ST is useful for precision analog sensor interfaces that need high-resolution conversion without a high-speed ADC. Differential input operation can improve rejection of common-mode disturbance, and the delta-sigma architecture provides digital filtering and noise shaping. The integrated reference and burnout detection are especially useful when the measured element may disconnect or fail during operation. Designers should establish the analog input range, reference accuracy, gain, and system calibration strategy before selecting converter settings; high nominal resolution alone does not determine absolute measurement accuracy.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MCP3561R-E/ST – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MCP3561-E/ST | MCP3561RT-E/ST | MCP3562R-E/ST | MCP3564R-E/ST | MCP3464T-E/ST |
|---|---|---|---|---|---|---|
| Package | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| ADC Architecture | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma |
| Digital Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Special Feature | Single-channel family member | Single-channel family member | Single-channel family member | Two-channel family member | Four-channel family member | Related low-power ADC family |
Wichtigste Unterscheidungsmerkmale
- Single-channel choice within a scalable Microchip ADC family (vs. MCP3564R-E/ST)
- Published compatibility path within the MCP3561 family (vs. MCP3561RT-E/ST)
- Integrated measurement and diagnostic resources (vs. MCP3464T-E/ST)
- High-resolution conversion at a configurable rate (vs. MCP3562R-E/ST)
Designhinweise
Place the supply-decoupling capacitors immediately adjacent to the MCP3561R-E/ST supply and ground pins. Route the selected analog input or differential pair as short and symmetrical as practical, and keep the SPI clock, data, and chip-select traces away from the input nodes. A continuous analog ground region beneath the converter and separating analog and digital return currents can reduce noise coupling in precision measurements.
Use differential input wiring when the sensor provides complementary outputs. This keeps the signal away from the analog ground reference and improves rejection of common-mode disturbances. Keep sensor returns and converter ground on the same low-impedance path, avoid long breakout cables between the sensor and ADC, and verify that the source impedance and configured data rate satisfy the input settling requirements in the manufacturer data sheet.
Do not treat 24-bit converter resolution as 24-bit absolute accuracy. Reference accuracy, analog front-end noise, bias current, resistor tolerances, PCB leakage, calibration, and the selected digital filter all influence the final measurement. Establish the required input range, conversion latency, and calibration method before fixing the operating configuration. Verify every pin on a replacement device against the manufacturer pin-description table rather than relying only on the shared TSSOP outline.
The integrated reference and oscillator can reduce external circuitry, but the converter still requires a clean supply and suitable analog input range. Confirm the operating voltage, decoupling value, reference configuration, and digital-interface levels from the manufacturer data sheet before laying out the board. If the system uses a switched supply, regulate the ADC rail or place additional filtering close to the device rather than relying on distant bulk capacitance.
Compliance-Informationen
RoHS-compliant status is stated by a published component listing. No explicit REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was identified.