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Microchip Technology MCP3564-E/ST
- Part No.:
- MCP3564-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MCP3564-E/ST.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
MCP3564-E/ST from Microchip Technology is a quad-channel, 24-bit delta-sigma analog-to-digital converter (ADC) with programmable gain (0.33x–64x), up to 153.6 ksps data rate, and integrated features including internal oscillator, temperature sensor, burnout current sources, and SCAN-mode sequencer. It delivers 106.7 dB SINAD and 120 dBc SFDR at 4800 SPS (Gain = 1x), supporting high-precision industrial sensor measurement in factory automation and portable instrumentation.
For engineers reviewing the MCP3564-E/ST datasheet, MCP3564-E/ST pinout, MCP3564-E/ST application, or MCP3564-E/ST equivalent, key selection criteria include its 20-lead TSSOP package, SPI interface (20 MHz, Mode 0,0/1,1), ultra-low full shutdown current (<5 µA), differential voltage reference inputs, and extended temperature range (–40°C to +125°C).
Technical Context
The MCP3564-E/ST implements a second-order delta-sigma modulator with digital SINC3 filtering, configurable oversampling ratio (32–98304), and programmable analog gain. Its internal sequencer (SCAN mode) supports automatic multiplexing across four input channels without MCU intervention, using a 24-bit timer for cycle timing control.
Security is enforced via 16-bit CRC on SPI communications and configuration registers, plus an 8-bit secure key to lock the register map. The device accepts either external clock (1–20 MHz) or internal RC oscillator (3.3–6.6 MHz), and features dedicated IRQ/MDAT pin for synchronization and diagnostics monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit, with no missing codes guaranteed at OSR ≥256 - enables direct high-resolution digitization without post-processing dithering. |
| Data Rate | Up to 153.6 ksps - supports real-time acquisition of fast transients in dynamic sensor systems. |
| Analog Gain Range | 0.33x to 64x - allows direct interface to low-level sensors (e.g., strain gauges, RTDs) without external amplification. |
| SINAD / SFDR | 106.7 dB / 120 dBc at 4800 SPS, Gain = 1x - ensures >23-bit effective resolution for precision metrology-grade measurements. |
| Supply Voltage | AVDD: 2.7–3.6 V; DVDD: 1.8–3.6 V - supports dual-supply isolation for noise-sensitive analog front-end design. |
| Temperature Range | –40°C to +125°C - qualified for harsh industrial environments including motor control and process instrumentation. |
| Shutdown Current | <5 µA full shutdown - extends battery life in portable instrumentation and low-power IoT edge nodes. |
Pinout & Package
Package: 20-Lead TSSOP (6.4 mm × 6.4 mm × 1 mm), leaded, RoHS-compliant. Exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 | Differential analog input channels | Four fully independent differential input pairs; support single-ended operation when REFIN– tied to AGND. |
| REFIN+, REFIN– | Differential voltage reference inputs | Accept external reference (0.6–AVDD V range); enable ratiometric measurement and rejection of supply noise. |
| AVDD, AGND | Analog power and ground | Isolated analog domain supply (2.7–3.6 V); critical for minimizing PSRR degradation and offset drift. |
| DVDD, DGND | Digital power and ground | Digital domain supply (1.8–3.6 V); separation from AVDD reduces digital switching noise coupling into ADC core. |
| SCK, CS, SDO, SDI | SPI serial interface | 20 MHz SPI-compatible (Mode 0,0 and 1,1); supports DMA-friendly 24/32-bit read/write formats. |
| IRQ/MDAT | Interrupt/data-ready output | Active-low open-drain output signals conversion completion or monitor event; simplifies synchronization with host MCU. |
| MCLKIN | External master clock input | Accepts 1–20 MHz clock (DVDD ≥2.7 V); enables precise timing control and jitter reduction vs. internal oscillator. |
| NC (Pins 6,7,8,9,10,15) | No-connect terminals | Must be tied to AGND per datasheet recommendation to improve EMI immunity and reduce susceptibility. |
Key Features
| Feature | Design Value |
|---|---|
| Internal SCAN sequencer with 24-bit timer | Automates multi-channel conversion sequences without CPU polling or firmware overhead - reduces MCU load in continuous monitoring systems. |
| Burnout current sources | Enables open/short detection on connected resistive sensors (e.g., RTDs, thermistors) - eliminates need for external diagnostic circuitry. |
| 24-bit digital offset/gain calibration registers | Allows one-time system-level calibration storage in nonvolatile register space - improves end-product accuracy without external EEPROM. |
| 16-bit CRC + register map lock | Prevents unauthorized reconfiguration and ensures SPI command integrity - meets functional safety requirements for industrial control applications. |
| Ultra-low noise: 90 nVRMS (Gain = 16x, 12.5 SPS) | Supports sub-microvolt signal resolution in low-bandwidth precision applications like weigh scales and pressure transmitters. |
Applications
| Pressure Transmitter Calibration | Factory Automation I/O Module |
|---|---|
Use Scenario: High-accuracy calibration of 4–20 mA pressure transmitters in field service tools. IC Role / Device Role / Timing Role: Primary ADC capturing differential bridge outputs with programmable gain and internal temperature compensation. Use Value: 24-bit resolution and <±5°C internal temperature sensor accuracy enable traceable, NIST-aligned calibration without external references. | Use Scenario: Analog input conditioning in modular PLC backplanes handling multiple sensor types. IC Role / Device Role / Timing Role: Quad-channel simultaneous sampling ADC with SCAN-mode sequencing for time-aligned multi-sensor acquisition. Use Value: Integrated burnout detection and 120 dBc SFDR allow reliable detection of sensor faults and rejection of industrial EMI in noisy factory floors. |
| Portable Gas Analyzer Front-End | High-Voltage Battery Monitoring |
Use Scenario: Low-power, battery-operated gas concentration analyzers using electrochemical or NDIR sensors. IC Role / Device Role / Timing Role: Precision ADC with ultra-low shutdown current (<5 µA) and internal oscillator for intermittent wake-up sampling. Use Value: 106.7 dB SINAD at 4800 SPS and internal temperature sensor enable ppm-level gas detection accuracy over full temperature range. | Use Scenario: Cell voltage monitoring in EV battery management systems requiring high common-mode rejection. IC Role / Device Role / Timing Role: Isolated differential ADC measuring stacked cell voltages with DC CMRR >126 dB and AC CMRR >122 dB. Use Value: Differential input architecture and –126 dB DC CMRR suppress bus ripple and switching noise, ensuring ±0.1% cell voltage accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1263IPBS | 32-bit resolution, 40 ksps max, integrated PGA and reference; requires external crystal for best jitter performance. | Targeted at ultra-high-precision lab equipment; lacks integrated burnout sources and SCAN sequencer. | Choose ADS1263IPBS when absolute 32-bit linearity and lower THD (–130 dBc) outweigh cost and feature trade-offs. |
| AD7177-2BRUZ | 32-bit, 10 ksps, 105 dB SINAD, no internal oscillator or temperature sensor; SPI-only, no IRQ pin. | Optimized for low-noise, low-speed metrology; lacks integrated diagnostics and autonomous sequencing. | Choose AD7177-2BRUZ when system already provides precision clock and external fault monitoring, and 10 ksps suffices. |
Compared with ADS1263IPBS and AD7177-2BRUZ, the MCP3564-E/ST uniquely combines quad-channel capability, integrated burnout detection, autonomous SCAN sequencing, and ultra-low shutdown current - making it optimal for compact, self-contained industrial sensor nodes where firmware simplicity and power efficiency are critical.
Availability
MCP3564-E/ST is available at Aetrix Electronics and suitable for factory automation I/O modules, portable instrumentation, and high-voltage battery monitoring systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MCP3564-E/ST includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog devices, and Flash-IP solutions, serving industrial, automotive, and consumer markets with high-reliability silicon and development tools.
The MCP356x family is designed specifically for high-accuracy, low-power sensor signal conditioning in industrial and portable measurement systems - emphasizing integrated diagnostics, autonomous operation, and robust EMC performance.
FAQ
What is the maximum achievable data rate for the MCP3564-E/ST?
The MCP3564-E/ST supports a programmable data rate of up to 153.6 ksps. This maximum rate is achieved at minimum oversampling ratio (OSR = 32) and depends on configured gain, clock source (internal or external), and SPI interface timing. At higher OSRs for improved noise performance, the data rate decreases proportionally - e.g., 4800 SPS at OSR = 98304.
Does the MCP3564-E/ST require an external crystal oscillator?
No, the MCP3564-E/ST does not require an external crystal oscillator. It includes an internal RC oscillator (3.3–6.6 MHz) that supports full functionality, including SCAN mode and temperature sensing. An external clock (1–20 MHz) may be used via MCLKIN for improved timing stability or jitter-sensitive applications, but is optional.
How many analog input channels does the MCP3564-E/ST support, and what configurations are possible?
The MCP3564-E/ST supports four differential analog input channels (CH0–CH3). Each channel can be configured for differential or single-ended operation. When used in single-ended mode, REFIN– must be tied to AGND. The internal analog multiplexer and SCAN sequencer enable automatic, timed cycling across all four channels without host MCU intervention.
What is the purpose of the IRQ/MDAT pin on the MCP3564-E/ST?
The IRQ/MDAT pin on the MCP3564-E/ST serves dual functions: as an interrupt output signaling data-ready or monitor events, and as a monitor data output during diagnostic reads. It operates as an active-low, open-drain output and simplifies synchronization with host microcontrollers by eliminating the need for continuous SPI polling during conversion sequences.
Can the MCP3564-E/ST perform internal calibration, and how is it implemented?
Yes, the MCP3564-E/ST supports internal 24-bit digital offset and gain error calibration via dedicated registers. Calibration coefficients can be written during system initialization or field calibration and applied in real time to correct for analog path errors. This eliminates the need for external calibration components and enables one-time, system-level correction stored directly in the device's register map.
MCP3564-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 153.6k
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- -
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 1.8V ~ 3.7V
- Features:
- Internal Oscillator, PGA, Temperature Sensor
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP3564-E/ST FAQ
1.How can I place an order for MCP3564-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP3564-E/ST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP3564-E/ST reliable?
The price and inventory of MCP3564-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP3564-E/ST is usually 5 days.
3.What payment methods are accepted for MCP3564-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP3564-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP3564-E/ST?
MCP3564-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP3564-E/ST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP3564-E/ST?
For technical support, including MCP3564-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP3564-E/ST requirements.
6.How does Aetrix verify that MCP3564-E/ST is sourced from the original manufacturer or authorized distributors?
All MCP3564-E/ST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP3564-E/ST meets industry standards.
7.What is the process for return or replacement of MCP3564-E/ST?
All MCP3564-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with MCP3564-E/ST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP3564-E/ST part is unused and in its original packaging.
Return procedure for MCP3564-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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