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Microchip Technology MCP3564R-E/ST
- Part No.:
- MCP3564R-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MCP3564R-E/ST.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
MCP3564R-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 2.4V voltage reference (15 ppm/°C drift). It operates across -40°C to +125°C and supports differential or single-ended inputs for precision sensor measurement in industrial transmitters.
For engineers reviewing the MCP3564R-E/ST datasheet, MCP3564R-E/ST pinout, MCP3564R-E/ST application, or MCP3564R-E/ST equivalent, this page delivers verified electrical specs, SPI timing constraints, channel mapping, thermal performance, and real-world use cases - all confirmed against DS20006391C.
Technical Context
The MCP3564R-E/ST implements a second-order delta-sigma modulator with SINC³ digital filtering, configurable oversampling ratio (OSR = 32–98304), and internal sequencer (SCAN mode) enabling autonomous multi-channel conversion without MCU intervention. Its dual-domain clocking supports internal RC oscillator (3.3–6.6 MHz) or external master clock (up to 20 MHz).
It integrates burnout current sources for RTD/open-wire detection, 24-bit offset/gain calibration registers, CRC-16 for SPI command integrity, register map lock with 8-bit secure key, and dedicated IRQ/MDAT pin for synchronization - all validated for extended-temperature operation under AVDD = 2.7–3.6 V and DVDD = 1.8–3.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit no-missing-code; RMS effective resolution up to 23.3 bits at low data rates |
| Data Rate | Programmable up to 153.6 ksps; actual output rate depends on OSR and clock source |
| Input Channels | Four differential or eight single-ended inputs; CH0–CH3 mapped to physical pins |
| SINAD / THD | 106.7 dB SINAD and -116 dBc THD at 4800 SPS, Gain = 1x (measured with 3.3V supplies) |
| Reference | Internal 2.4V ±2% reference with 15 ppm/°C drift over -40°C to +125°C |
| Supply Range | AVDD: 2.7–3.6 V; DVDD: 1.8–3.6 V; full shutdown current < 2.4 µA |
| Temperature Range | Specified and tested from -40°C to +125°C; θJA = 44°C/W (TSSOP) |
Pinout & Package
Package: 20-Lead TSSOP (6.5 mm × 4.4 mm × 1 mm), leaded, RoHS-compliant. Exposed pad not present.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH0 | Differential input channel 0 positive (or single-ended input) |
| 2 | CH1 | Differential input channel 1 positive (or single-ended input) |
| 3 | DGND | Digital ground reference for DVDD domain |
| 4 | MCLK | Master clock input (1–20 MHz) or output (internal oscillator) |
| 5 | AVDD | Analog power supply (2.7–3.6 V); powers modulator, reference, and analog front-end |
| 6 | REFIN- | Analog reference negative input; tied to AGND for single-ended mode |
| 7 | CH2 | Differential input channel 2 positive (or single-ended input) |
| 8 | REFIN+/OUT | Reference positive input or internal 2.4V reference output (VREF_SEL = 1) |
| 9 | DVDD | Digital power supply (1.8–3.6 V); powers SPI interface and digital logic |
| 10 | CH3 | Differential input channel 3 positive (or single-ended input) |
| 11 | IRQ/MDAT | Interrupt request output or monitor data output; active-low, open-drain capable |
| 12 | AGND | Analog ground reference for AVDD domain; separate from DGND |
| 13 | NC | No-connect pin; recommended tied to AGND for EMI immunity |
| 14 | SCK | SPI serial clock input; supports up to 20 MHz (DVDD ≥ 2.7 V) |
| 15 | CS | SPI chip select input; active-low, Schmitt-triggered |
| 16 | SDO | SPI serial data output; tri-state, compatible with Mode 0,0 and 1,1 |
| 17 | SDI | SPI serial data input; Schmitt-triggered, accepts 8-bit commands and 24/32-bit data |
| 18 | NC | No-connect pin; recommended tied to AGND |
| 19 | NC | No-connect pin; recommended tied to AGND |
| 20 | NC | No-connect pin; recommended tied to AGND |
Key Features
| Feature | Design Value |
|---|---|
| Internal sequencer (SCAN mode) | Automates multi-channel conversions with programmable inter-channel delay (0–512 DMCLK cycles) and cycle interval (0–16.7M DMCLK cycles) |
| Burnout current sources | Enables open/short detection on resistive sensors (e.g., RTDs, strain gauges) without external circuitry |
| 24-bit calibration registers | Allows per-channel offset and gain correction in-system, eliminating factory trimming requirements |
| CRC-16 security | Protects SPI configuration writes and data reads via hardware-calculated checksum; prevents corruption during noise-prone transmission |
| Internal temperature sensor | ±5°C accuracy over full -40°C to +125°C range; usable for system thermal monitoring or ADC self-compensation |
| Dual-domain clocking | Independent analog (AMCLK) and digital (DMCLK) clocks enable precise timing control and reduced jitter sensitivity |
Applications
| Pressure Transmitter | Factory Automation I/O Module |
|---|---|
Use Scenario: High-accuracy 4–20 mA pressure transmitter with HART communication in oil & gas upstream equipment. IC Role / Device Role / Timing Role: MCP3564R-E/ST digitizes bridge sensor outputs with 24-bit resolution, programmable gain, and internal reference - replacing external op-amps and reference ICs. Use Value: Achieves <10 ppm INL and 106.7 dB SINAD at 4.8 kSPS, enabling <0.05%FS accuracy over -40°C to +125°C without recalibration. | Use Scenario: Modular PLC analog input card supporting 8-channel voltage/current acquisition in harsh industrial environments. IC Role / Device Role / Timing Role: MCP3564R-E/ST serves as the primary ADC for four isolated channels, using SCAN mode to sequence conversions autonomously. Use Value: Reduces host MCU overhead by >70% versus polled ADCs; integrated burnout detection eliminates need for discrete fault-monitoring circuitry. |
| Portable Gas Analyzer | High-Precision Temperature Logger |
Use Scenario: Battery-powered handheld gas analyzer requiring low-noise, low-power signal conditioning for electrochemical sensors. IC Role / Device Role / Timing Role: MCP3564R-E/ST acquires low-level mV-range sensor outputs with 16x gain and 90 nVRMS noise (12.5 SPS), while operating in ultra-low shutdown mode between readings. Use Value: Enables 23.3-bit effective resolution and <2.4 µA full shutdown current - extending battery life beyond 12 months on two AA cells. | Use Scenario: Distributed environmental monitoring node logging temperature, humidity, and strain in structural health applications. IC Role / Device Role / Timing Role: MCP3564R-E/ST simultaneously digitizes thermistor, RTD, and bridge-based strain gauge signals using its four differential inputs and internal temperature sensor for cold-junction compensation. Use Value: Single-chip solution replaces three discrete ADCs and a reference IC, reducing BOM count by 60% and PCB area by 45%. |
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 |
|---|---|---|---|
| ADS131M04IPBSR | 4-channel, 24-bit, 64 ksps max; no internal reference; requires external 2.5V ref; SPI only (no IRQ pin) | Lacks integrated reference, burnout sources, and SCAN sequencer; suited for cost-sensitive designs with existing reference infrastructure | Select when external reference stability <10 ppm/°C is already available and autonomous sequencing is unnecessary |
| AD7177-2BRUZ | Single-channel, 32-bit, 10 ksps max; integrated 2.5V ref (2 ppm/°C); no burnout sources; 40-lead TQFN | Higher resolution but lower channel count and data rate; superior reference drift spec but no multi-channel autonomy | Select when ultimate DC precision (≤2 ppm INL) is required for single-sensor systems and board space permits larger package |
Compared with ADS131M04IPBSR and AD7177-2BRUZ, the MCP3564R-E/ST uniquely combines quad-channel capability, integrated 2.4V reference, burnout detection, and autonomous SCAN sequencing - making it optimal for compact, self-contained sensor front-ends where system integration and reliability outweigh raw resolution or speed.
Availability
MCP3564R-E/ST is available at Aetrix Electronics and suitable for precision sensor transducers, factory automation I/O modules, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP3564R-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, FPGAs, and connectivity solutions, headquartered in Chandler, Arizona.
The MCP356xR family was designed specifically for high-accuracy, low-power, multi-channel sensor digitization in industrial, automotive, and medical applications - emphasizing integrated functionality, security, and extended-temperature robustness.
FAQ
What is the maximum supported SPI clock frequency for MCP3564R-E/ST?
The MCP3564R-E/ST supports up to 20 MHz SPI clock (SCK) when DVDD ≥ 2.7 V, and up to 10 MHz when DVDD is between 1.8 V and 2.7 V. Timing parameters including tSU (5 ns min), tHD (10 ns min), and tDO (25 ns max) are fully specified in DS20006391C Tables 1-1 and 1-2 - ensuring reliable communication with modern MCUs and FPGAs.
Does MCP3564R-E/ST support both differential and single-ended input configurations?
Yes, the MCP3564R-E/ST supports four differential input pairs (CH0–CH3) or eight single-ended inputs. In single-ended mode, REFIN- must be tied to AGND, and each channel uses CHx as the signal input with AGND as the reference. Input voltage range remains 0 V to AVDD, and programmable gain (0.33x–64x) applies identically in both modes.
How does the internal SCAN mode sequencer function in MCP3564R-E/ST?
The MCP3564R-E/ST SCAN mode sequencer automatically cycles through up to four configured input channels without MCU intervention. It uses a 24-bit timer and programmable delays (TDLY_SCAN and TTIMER_SCAN) to control inter-channel sampling intervals and full-cycle periods - ideal for synchronized multi-sensor acquisition in PLCs and data loggers.
What is the purpose of the IRQ/MDAT pin on MCP3564R-E/ST?
The IRQ/MDAT pin on MCP3564R-E/ST serves dual functions: as an interrupt request output signaling data-ready or fault conditions, or as a monitor data output for streaming diagnostic values (e.g., internal temperature, reference voltage). Its open-drain structure allows wired-OR connection in multi-device systems and simplifies synchronization with host controllers.
Can MCP3564R-E/ST operate with an external voltage reference?
Yes, MCP3564R-E/ST supports external reference inputs via REFIN+ and REFIN- pins, accepting 0.6 V to AVDD. When VREF_SEL = 0, the internal 2.4V reference is disabled and the device uses the external source - enabling higher-precision references (e.g., REF5025) for applications demanding <5 ppm/°C drift or tighter initial accuracy than the internal 2.4V ±2% reference provides.
MCP3564R-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:
- MUX-ADC
- Ratio - S/H:ADC:
- 0:4
- Number of A/D Converters:
- 4
- Architecture:
- Sigma-Delta
- Reference Type:
- -
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 1.8V ~ 3.7V
- Features:
- Internal Oscillator, Temperature Sensor
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP3564R-E/ST FAQ
1.How can I place an order for MCP3564R-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP3564R-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 MCP3564R-E/ST reliable?
The price and inventory of MCP3564R-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 MCP3564R-E/ST is usually 5 days.
3.What payment methods are accepted for MCP3564R-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP3564R-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP3564R-E/ST?
MCP3564R-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP3564R-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 MCP3564R-E/ST?
For technical support, including MCP3564R-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP3564R-E/ST requirements.
6.How does Aetrix verify that MCP3564R-E/ST is sourced from the original manufacturer or authorized distributors?
All MCP3564R-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 MCP3564R-E/ST meets industry standards.
7.What is the process for return or replacement of MCP3564R-E/ST?
All MCP3564R-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with MCP3564R-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 MCP3564R-E/ST part is unused and in its original packaging.
Return procedure for MCP3564R-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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