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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Microchip Technology MCP3464R-E/ST

Name: MCP3464R-E/ST
Brand: Microchip Technology
SKU: MCP3464R-E/ST
Price: 2.40 USD
Availability: InStock
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Part No.:: MCP3464R-E/ST

Manufacturer:: Microchip Technology

Category:: Analog to Digital Converters (ADC)

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: MCP3464R-E/ST.pdf

Description:: IC ADC 16BIT SIGMA-DELTA 20TSSOP

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Product details

Overview

MCP3464R-E/ST from Microchip Technology is a quad-channel, 16-bit delta-sigma ADC with programmable gain (0.33x–64x), 153.6 ksps max data rate, and integrated 2.4V voltage reference. It operates from -40°C to +125°C and supports differential or single-ended inputs for precision sensor digitization in industrial measurement systems.

For engineers reviewing the MCP3464R-E/ST datasheet, MCP3464R-E/ST pinout, MCP3464R-E/ST application, or MCP3464R-E/ST equivalent, this page delivers verified specifications, validated UQFN/TSSOP pin mapping, real-world use cases in pressure/flow transmitters, and two confirmed alternative parts with documented functional and application-level differences.

Technical Context

The MCP3464R-E/ST implements a second-order delta-sigma modulator with SINC3 digital filtering, oversampling ratio (OSR) configurable from 32 to 98304, and internal sequencer for automatic channel scanning without MCU intervention. Its analog front-end includes burnout current sources, chopper-stabilized offset calibration, and dual-reference input capability (REFIN+/OUT and REFIN-).

It features dual power domains (AVDD 2.7–3.6V, DVDD 1.8–3.6V), 20 MHz SPI interface (Mode 0,0 and 1,1), CRC-secured communications, register map lock with 8-bit secure key, and IRQ/MDAT pin for conversion synchronization and diagnostics.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	16-bit with no missing codes (OSR ≥256); effective resolution ≥15.4 bits across all gains and OSR settings.
Max Data Rate	153.6 ksps - enables high-speed sampling of dynamic sensor signals such as fast-response pressure transducers.
SINAD / THD	97.2 dB SINAD, -116 dBc THD (Gain = 1x, 4800 SPS) - ensures high-fidelity digitization for metrology-grade applications.
Input Channels	4 differential or 8 single-ended inputs - supports multiplexed multi-sensor systems like 4-wire RTD arrays or strain gauge bridges.
Reference	Internal 2.4V ±2% reference with 15 ppm/°C drift - eliminates external reference component while maintaining accuracy over temperature.
Operating Temp	-40°C to +125°C - qualified for under-hood automotive, industrial PLC, and harsh-environment monitoring.
Supply Current	0.96 mA analog current (BOOST=01, VREF=2.4V) and 0.25 mA digital current - enables low-power portable instrumentation designs.

Pinout & Package

Package: 20-Lead TSSOP (6.5 mm × 4.4 mm × 1 mm) and 20-Lead UQFN (3 mm × 3 mm × 0.55 mm) with exposed thermal pad (EP). Both packages support the same pin function mapping.

Pin/Terminal	Circuit Role	Design Meaning
CH0–CH7	Analog input channels	CH0–CH3 assigned to 4-channel operation in MCP3464R; CH4–CH7 are NC on MCP3464R-E/ST (TSSOP variant shown with full 8-pin layout but only CH0–CH3 active).
REFIN+/OUT	Reference voltage output/input	Configurable as 2.4V internal reference output or external reference input; requires 1 µF bypass capacitor for stability.
REFIN-	Reference ground reference	Must be connected to AGND for single-ended measurements; forms differential reference pair with REFIN+/OUT.
AVDD / DVDD	Analog/digital supply rails	Independent 2.7–3.6V (AVDD) and 1.8–3.6V (DVDD) supplies enable noise isolation and flexible system-level power architecture.
SCK / CS / SDO / SDI	SPI serial interface	20 MHz SPI (Mode 0,0 and 1,1) with CRC-protected commands; SDO supports DMA-friendly 16/32-bit read formats.
IRQ/MDAT	Interrupt/data-ready indicator	Asserts low upon conversion completion or error condition; supports synchronized multi-device acquisition in daisy-chain configurations.
AGND / DGND	Analog/digital ground	Separate ground pins minimize digital switching noise coupling into sensitive analog signal paths.
MCLK	Master clock input	Accepts 1–20 MHz external clock or enables internal RC oscillator (3.3–6.6 MHz); determines maximum OSR and data rate.

Key Features

Feature	Design Value
Internal sequencer (Scan mode)	Automates round-robin conversion across up to 4 channels using internal 16-bit timer-eliminates MCU polling overhead in continuous monitoring.
Burnout current sources	Integrated 10 µA current sources detect open/short conditions in 2-/3-/4-wire RTD or thermistor circuits without external components.
16-bit offset/gain calibration registers	Enables one-time factory or field calibration to correct system-level gain/offset errors-reduces post-PCB trimming labor and cost.
Temperature sensor	On-die sensor with ±5°C accuracy monitors die temperature for thermal compensation of analog front-end drift.
Security features	CRC-secured SPI reads/writes, register map lock with 8-bit key, and IRQ-based configuration integrity check-meets IEC 62443-3-3 requirements for secure industrial nodes.

Applications

Pressure Transmitter	Flow Meter Interface
Use Scenario: Digitizing output of piezoresistive pressure sensors in HVAC or process control transmitters. IC Role / Device Role / Timing Role: Quad-channel ADC acquires differential bridge outputs (CH0/CH1), internal reference stabilizes gain, and Scan mode sequences readings at 10–100 SPS. Use Value: 97.2 dB SINAD and 0.5 ppm/°C gain drift ensure <0.1%FS accuracy over -40°C to +85°C ambient range without recalibration.	Use Scenario: Reading turbine or Coriolis flow meter analog outputs in industrial automation panels. IC Role / Device Role / Timing Role: Simultaneous sampling of flow rate, temperature, and density signals via CH0–CH2; IRQ synchronizes data capture with pulse-counting logic. Use Value: Burnout detection identifies sensor wire breaks in real time; 153.6 ksps headroom supports anti-aliasing filter design for >1 kHz mechanical resonance suppression.
Portable Gas Analyzer	Factory Automation DAQ
Use Scenario: Battery-powered handheld analyzers measuring electrochemical cell voltages and NDIR detector outputs. IC Role / Device Role / Timing Role: Low-noise 2.3 µVRMS (Gain=16x) digitizes weak mV-level signals; ultra-low shutdown current (<2.4 µA) extends battery life between readings. Use Value: Internal 2.4V reference and chopper stabilization eliminate need for external op-amps or precision references-reducing BOM count by ≥3 components.	Use Scenario: Modular PLC analog input modules acquiring 4–20 mA loop signals from multiple field devices. IC Role / Device Role / Timing Role: Configured for 4 single-ended channels with programmable gain (0.33x for 20 mA, 64x for thermocouple mV), internal sequencer manages cyclic acquisition. Use Value: 120 dBc SFDR and -126 dB DC CMRR reject common-mode noise from shared 24V DC bus and motor drives in cabinet-mounted systems.

Pressure Transmitter

Flow Meter Interface

Use Scenario: Digitizing output of piezoresistive pressure sensors in HVAC or process control transmitters.

IC Role / Device Role / Timing Role: Quad-channel ADC acquires differential bridge outputs (CH0/CH1), internal reference stabilizes gain, and Scan mode sequences readings at 10–100 SPS.

Use Value: 97.2 dB SINAD and 0.5 ppm/°C gain drift ensure <0.1%FS accuracy over -40°C to +85°C ambient range without recalibration.

Use Scenario: Reading turbine or Coriolis flow meter analog outputs in industrial automation panels.

IC Role / Device Role / Timing Role: Simultaneous sampling of flow rate, temperature, and density signals via CH0–CH2; IRQ synchronizes data capture with pulse-counting logic.

Use Value: Burnout detection identifies sensor wire breaks in real time; 153.6 ksps headroom supports anti-aliasing filter design for >1 kHz mechanical resonance suppression.

Portable Gas Analyzer

Factory Automation DAQ

Use Scenario: Battery-powered handheld analyzers measuring electrochemical cell voltages and NDIR detector outputs.

IC Role / Device Role / Timing Role: Low-noise 2.3 µVRMS (Gain=16x) digitizes weak mV-level signals; ultra-low shutdown current (<2.4 µA) extends battery life between readings.

Use Value: Internal 2.4V reference and chopper stabilization eliminate need for external op-amps or precision references-reducing BOM count by ≥3 components.

Use Scenario: Modular PLC analog input modules acquiring 4–20 mA loop signals from multiple field devices.

IC Role / Device Role / Timing Role: Configured for 4 single-ended channels with programmable gain (0.33x for 20 mA, 64x for thermocouple mV), internal sequencer manages cyclic acquisition.

Use Value: 120 dBc SFDR and -126 dB DC CMRR reject common-mode noise from shared 24V DC bus and motor drives in cabinet-mounted systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit delta-sigma ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADS1256IDBT	8-channel, 24-bit, 30 ksps max; no internal reference; requires external crystal or clock; SPI-only interface.	Lacks integrated burnout detection, temperature sensor, and security features; higher resolution but lower speed and no sequencer.	Select when absolute highest DC precision is required and system already provides reference/clock; not drop-in due to different pinout and register structure.
MCP3464RT-E/ST	Same silicon, tape-and-reel packaging variant; identical electrical specs, timing, and pinout; RoHS-compliant lead finish.	No functional difference-designed for automated SMT assembly vs. tube-packaged E/ST.	Choose MCP3464RT-E/ST for volume production with pick-and-place; MCP3464R-E/ST remains optimal for prototyping and low-volume builds.

Compared with ADS1256IDBT, MCP3464R-E/ST trades 8 bits of resolution for integrated functionality (reference, sequencer, burnout, security), higher speed (153.6 vs. 30 ksps), and smaller footprint; versus MCP3464RT-E/ST, it differs only in packaging-no electrical or functional divergence.

Availability

MCP3464R-E/ST is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, and factory automation requiring stable component supply, long-term lifecycle support, and extended temperature performance.

Supply support for MCP3464R-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 is a global semiconductor company specializing in microcontrollers, analog, FPGA, and memory products for industrial, automotive, and consumer markets.

The MCP346xR family was designed to reduce system cost and complexity in high-accuracy sensor signal chains by integrating reference, oscillator, temperature sensing, and advanced diagnostics into a single 16-bit delta-sigma ADC.

FAQ

What is the maximum supported SPI clock frequency for MCP3464R-E/ST?

The MCP3464R-E/ST supports up to 20 MHz SPI clock (SCK) when DVDD is 2.7–3.6V, per Table 1-1. At DVDD 1.8–2.7V, the maximum SCK drops to 10 MHz (Table 1-2). The device operates in SPI Modes 0,0 and 1,1, and uses 8-bit command framing with optional CRC verification for robust communication integrity in noisy industrial environments.

Does MCP3464R-E/ST support both differential and single-ended input configurations?

Yes, MCP3464R-E/ST supports four differential input pairs (CH0–CH1, CH2–CH3, etc.) or eight single-ended inputs (CH0–CH7), selectable via configuration registers. For single-ended operation, REFIN- must be tied to AGND. Input voltage range is 0V to AVDD, and differential input range is ±VREF/Gain - enabling flexible interfacing with bridge sensors, RTDs, and current-loop receivers.

How does the internal sequencer (Scan mode) function in MCP3464R-E/ST?

The MCP3464R-E/ST internal sequencer automates conversions across up to four user-selected channels without MCU intervention. It uses an internal 16-bit timer to define inter-channel delay (0–512 DMCLK cycles) and scan cycle interval (0–16,777,215 DMCLK cycles). This enables deterministic, low-jitter sampling for multi-sensor systems - reducing firmware overhead and improving timing consistency in data loggers and DAQ modules.

What is the purpose of the burnout current sources in MCP3464R-E/ST?

The MCP3464R-E/ST integrates programmable 10 µA burnout current sources per channel to detect open-circuit or short-circuit faults in resistive sensors (e.g., RTDs, thermistors). When enabled, these currents bias the sensor leads; abnormal voltage readings at CHx+ or CHx− trigger diagnostic flags. This eliminates need for external fault-detection circuitry and enables real-time sensor health monitoring in safety-critical applications.

Can MCP3464R-E/ST operate with an external voltage reference?

Yes, MCP3464R-E/ST accepts external references via REFIN+/OUT and REFIN- pins, supporting reference voltages from 0.6V to AVDD. When VREF_SEL = 0, the internal 2.4V reference is disabled, and the device uses the external differential reference pair. This allows higher-precision applications using ultra-stable references (e.g., REF5025) while retaining all other features including gain scaling, offset calibration, and sequencer operation.

MCP3464R-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:: 16

Sampling Rate (Per Second):: 153.6k

Number of Inputs:: 4

Input Type:: Differential, Single Ended

Data Interface:: SPI

Configuration:: MUX-ADC

Ratio - S/H:ADC:: 0:4

Number of A/D Converters:: 1

Architecture:: Sigma-Delta

Reference Type:: External, Internal

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:: -

MCP3464R-E/ST FAQ

1.How can I place an order for MCP3464R-E/ST through Aetrix?

Please submit a Request for Quotation (RFQ) for MCP3464R-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 MCP3464R-E/ST reliable?

The price and inventory of MCP3464R-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 MCP3464R-E/ST is usually 5 days.

3.What payment methods are accepted for MCP3464R-E/ST?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP3464R-E/ST transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MCP3464R-E/ST?

MCP3464R-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCP3464R-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 MCP3464R-E/ST?

For technical support, including MCP3464R-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP3464R-E/ST requirements.

6.How does Aetrix verify that MCP3464R-E/ST is sourced from the original manufacturer or authorized distributors?

All MCP3464R-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 MCP3464R-E/ST meets industry standards.

7.What is the process for return or replacement of MCP3464R-E/ST?

All MCP3464R-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with MCP3464R-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 MCP3464R-E/ST part is unused and in its original packaging.

Return procedure for MCP3464R-E/ST:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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