MCP3462R-E/ST - 16-Bit 153.6kSPS Delta-Sigma ADC | Microchip
MPN: MCP3462R-E/ST ✓ ActiveMCP3462R-E/ST Overview
A delta-sigma ADC is a type of analog-to-digital converter that uses a sigma-delta modulator to shape quantization noise into the out-of-band region, where it is removed by a digital decimation filter. Within the broader hierarchy of data converter ICs -> analog-to-digital converter -> data acquisition building block -> semiconductor, this architecture is the standard choice for high-resolution, low-bandwidth measurement of slowly varying or slowly changing analog signals such as temperature, pressure, load-cell bridge outputs, and battery voltage.
Key features of the MCP3462R include 16-bit resolution, a maximum 153.6 kSPS conversion rate, an internal 2.048 V-class voltage reference with an internal oscillator, a programmable gain amplifier (PGA), an integrated temperature sensor, and burnout sensor detection for open-circuit diagnostics. A typical SNR of 97.3 dB and flexible digital interface handling let the same part cover industrial process control, energy metering, and portable instrumentation.
The analog supply operates from 2.7 V to 3.6 V while the digital supply accepts 1.8 V to 3.7 V, which lets the ADC interface directly to 1.8 V microcontrollers and 3.3 V logic without level translators. The serial interface supports SPI-compatible framing, and the integrated reference and oscillator remove the external precision reference and crystal normally required, reducing board area and total solution cost.
Typical applications include precision temperature sensing with RTDs and thermocouples, load-cell and strain-gauge front ends, industrial data acquisition modules, battery-powered portable instrumentation, and energy metering where a low-noise 16-bit conversion with built-in diagnostics is needed.
When designing with the MCP3462R-E/ST, keep analog and digital return currents separated and place the input RC filter close to the VIN pins. The internal reference and internal oscillator simplify the BOM, but for the lowest gain error across temperature the external reference option should be evaluated against the accuracy target of the end measurement.
This page consolidates parametric detail, package and pin information, drop-in replacement candidates, application guidance, and practical design notes into one reference so that design, sourcing, and review teams can evaluate the MCP3462R-E/ST without piecing the data together from multiple listings.
Drop-in alternatives for MCP3462R-E/ST — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCP3462R-E/ST (same form factor and footprint) — differing in Package, Internal Voltage Reference, Converter Type, Resolution, RoHS Status.
MCP3462-E/ST
✅ Drop-InContact for price
View Datasheet →MCP3461R-E/ST
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →MCP3464R-E/ST
✅ Drop-InContact for price
View Datasheet →MCP3464RT-E/ST
✅ Drop-In📋 Reference alternative (not in catalog)
MCP3562-E/ST
✅ Drop-InContact for price
View Datasheet →MCP3462R-E/ST Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Converter Type | Delta-Sigma ADC |
| Maximum Sample Rate | 153.6 kSPS |
| Input Channels | 4 single-ended or 2 differential |
| Analog Supply Voltage | 2.7 V to 3.6 V |
| Digital Supply Voltage | 1.8 V to 3.7 V |
| Internal Voltage Reference | Yes, integrated Vref |
| Internal Oscillator | Yes, integrated |
| Programmable Gain Amplifier | Yes (PGA) |
| Integrated Temperature Sensor | Yes |
| Burnout Sensor Detection | Yes |
| Signal-to-Noise Ratio (Typ) | 97.3 dB |
| Digital Interface | SPI |
| Operating Temperature | -40 °C to +125 °C |
| Package | 20-lead TSSOP, 0.173 inch (4.40 mm) width |
| Mounting Type | Surface Mount |
| RoHS Status | unknown |
MCP3462R-E/ST 20-lead tssop, 0.173 inch (4.40 mm) width Pin Configuration Guide
Pin configuration for MCP3462R-E/ST (20-lead tssop, 0.173 inch (4.40 mm) width package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MCP3462R-E/ST.
Refer to the datasheet for full pin configuration.
Typical Applications
MCP3462R-E/ST is suitable for 6 applications: Precision RTD and Thermocouple Temperature Sensing, Load Cell and Strain Gauge Front Ends, Industrial Data Acquisition Modules, Battery-Powered Portable Instrumentation, Energy Metering and Power Quality Monitoring, Sensor Hubs and IoT Edge Nodes.
Precision RTD and Thermocouple Temperature Sensing
The MCP3462R-E/ST suits precision temperature measurement because its two differential inputs accept the small millivolt-level signals produced by Pt100, Pt1000, and type K thermocouples without front-end noise dominating the result. A 16-bit converter with a typical SNR of 97.3 dB gives roughly 0.003 percent of full-scale resolution, and the integrated PGA reduces the gain-setting resistors required in front of the converter. Place an input RC filter with a differential configuration close to the VIN pins, and use the burnout sensor detection function to flag open or shorted probes. The integrated voltage reference and internal oscillator remove the external reference and crystal that would otherwise drift with the sensor loop.
Recommended
Load Cell and Strain Gauge Front Ends
Bridge-based force and weight measurement benefits from the differential input architecture of the MCP3462R-E/ST, which rejects common-mode noise present on the millivolt-level bridge excitation output. The programmable gain amplifier inside the converter allows the bridge sensitivity to be matched without external instrumentation amplifiers, keeping the analog chain short and reducing noise pickup on the board. At a maximum rate of 153.6 kSPS the device also supports dynamic weighing and vibration monitoring. The internal reference keeps excitation and conversion on a common reference path when the bridge is ratiometrically excited, which cancels supply drift, and burnout detection identifies failed bridge or cable connections.
Recommended
Industrial Data Acquisition Modules
Multi-channel process monitoring modules benefit from the MCP3462R-E/ST because four single-ended inputs can be multiplexed onto one converter, cutting the number of converters per analog channel and therefore reducing board area, power, and calibration burden. The 153.6 kSPS maximum rate allows each channel to be sampled fast enough for temperature, pressure, and flow loops while the programmable data rate lets slower channels be converted at reduced rates to save power. The SPI interface connects naturally to an industrial microcontroller, and the 1.8 V to 3.7 V digital supply range supports both 1.8 V and 3.3 V logic domains on the same board without level shifting.
Recommended
Battery-Powered Portable Instrumentation
Handheld meters and portable analyzers benefit from the MCP3462R-E/ST because the integrated voltage reference and internal oscillator remove two external components and reduce the standby current that external reference and crystal circuits typically add. With the analog rail running from 2.7 V to 3.6 V, the converter can sit behind an LDO powered by a single Li-ion cell, and the digital side can be driven directly from a 1.8 V microcontroller core. Selecting a lower data rate in the device configuration trades conversion speed for lower average supply current, which matters when the instrument spends most of its life in a low-duty-cycle measurement mode.
Recommended
Energy Metering and Power Quality Monitoring
The MCP3462R-E/ST suits energy metering front ends where voltage and current channels are ratiometrically scaled and slowly changing, because the sigma-delta architecture delivers 16-bit resolution with strong rejection of out-of-band noise at low conversion rates. The typical 97.3 dB SNR preserves accuracy on low-amplitude current channels, while the differential inputs handle the common-mode voltage present on shunt and transformer outputs. The integrated reference supports ratiometric operation, and the burnout detection function identifies open shunt paths and wiring faults that would otherwise appear as false readings during calibration.
Recommended
Sensor Hubs and IoT Edge Nodes
Compact IoT sensor nodes and edge gateways benefit from the MCP3462R-E/ST because a single 20-lead TSSOP can digitize several slow sensor inputs while sharing one analog front-end. The wide digital supply range lets the converter sit alongside a 1.8 V radio or microcontroller without level shifters, and the integrated reference and oscillator keep the BOM to a minimum, which matters when the board area is constrained by a coin cell or a small enclosure. The internal temperature sensor provides a local reference reading for compensation or for verifying the health of the enclosure, and the extended -40 °C to +125 °C rating supports outdoor and unheated installations.
Recommended
Recommended Products Summary
Engineering reference data for MCP3462R-E/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCP3462-E/ST | MCP3461R-E/ST | MCP3464R-E/ST | MCP3464RT-E/ST | MCP3562-E/ST |
|---|---|---|---|---|---|---|
| Package | 20-lead TSSOP, 0.173 inch (4.40 mm) width | 20-lead TSSOP - same | 20-lead TSSOP - same | 20-lead TSSOP - same | 20-lead TSSOP - same | 20-lead TSSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
Key Differentiators
- Integrated voltage reference and internal oscillator remove two external components (vs MCP3462-E/ST)
- Preferred pin-compatible option for new designs (vs MCP3462-E/ST)
- Two differential channels natively supported without multiplexing loss (vs MCP3461R-E/ST)
- Channel-count flexibility without changing the converter (vs MCP3464R-E/ST)
- Extended temperature grade with integrated diagnostics (vs MCP3562-E/ST)
Design Notes
Route the differential analog inputs as a tight, length-matched pair directly to the VIN pins and place the differential input RC filter network as close to the device as possible. Keep the analog ground and digital ground planes separated under the converter and tie them at a single point near the device ground pin, because the internal reference and oscillator can inject conversion-synchronous noise onto a shared plane. The 20-lead TSSOP footprint gives adequate lead spacing for a standard two-resistor differential filter; place its ground return directly to the analog ground plane rather than routing it through the digital return path.
Decouple the analog and digital supplies independently with a short, low-impedance connection to their respective pins: a small high-frequency ceramic capacitor plus a bulk ceramic capacitor on each rail, with the analog supply derived from a dedicated low-noise LDO rather than directly from a switching node. The digital supply accepts 1.8 V to 3.7 V while the analog supply accepts 2.7 V to 3.6 V, so a 3.3 V rail can feed both and a separate filtered 1.8 V rail can drive the interface. Do not exceed 3.6 V on the analog supply, and verify supply sequencing against the device's power-up requirements in the datasheet.
Choose the differential input filter capacitor so that its settling time fits inside the acquisition window of the selected data rate; at 153.6 kSPS the sample period is short and an oversized filter capacitor will prevent the inputs from settling, showing up as gain error rather than noise. Because the internal reference and internal oscillator are used by default, verify in the datasheet that the startup time of the reference and the clock tree is accounted for before the first valid conversion is read. Use the burnout detection and the internal temperature sensor as built-in diagnostics to confirm channel integrity in the field.
A frequent design error is treating the MCP3462R-E/ST as a drop-in substitute for the MCP3462-E/ST without planning for the missing external reference, which leaves the analog input unreferenced and produces meaningless codes. Another common mistake is assuming the four single-ended channels are simultaneously sampled; they are multiplexed, so a fast-changing signal on one channel can alias into the next conversion if the rate is too low. Always confirm the multiplexing order, gain setting, and channel differential/single-ended configuration in the register map before committing a layout to a specific channel order.
Compliance Information
The -E grade denotes the extended temperature range (-40 °C to +125 °C), not an automotive qualification. RoHS, REACH, and AEC-Q100 status for this specific orderable part number are not stated in the manufacturer pages retrieved for this listing, so they remain unknown. Confirm the declaration of conformity with the manufacturer for your production lot.
