MCP3561RT-E/ST Microchip Undefined or Miscellaneous (Small Outline Packages) In Stock
The MCP3561RT-E/ST is a 24-bit delta-sigma ADC from Microchip with an integrated voltage reference, 2 analog input channels, and an analog input range of -2.7 V to +3.6 V, packaged in a TSSOP-20. It delivers up to 0.0032% linearity error and suits precision measurement in industrial sensing, weigh scales, and medical instrumentation.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP3561RT-E/ST Datasheet PDF
- Category
- Undefined or Miscellaneous
- Price
- From $2.0900(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 24-bit delta-sigma conversion with 0.0032% maximum linearity error for high-precision measurements
- Integrated voltage reference reducing external component count and simplifying PCB layout
- 2 analog input channels with input range -2.7 V to +3.6 V supporting bipolar sensor signals
- TSSOP-20 package (JESD-30 R-PDSO-G20) for compact PCB integration in space-constrained designs
- 3 V single-supply operation enabling low-power battery-operated data acquisition systems
Applications
The MCP3561RT-E/ST is suited for precision industrial sensing applications such as weigh scales, load cells, and pressure transducers that require 24-bit resolution and low 0.0032% linearity error to resolve sub-millivolt signals. Its integrated voltage reference and 2-channel input simplify thermocouple amplifier and bridge sensor front-end designs operating from a 3 V supply. Medical instrumentation, gas detection, and analytical chemistry equipment also benefit from its delta-sigma architecture, which rejects 50 Hz and 60 Hz powerline interference inherently.
Specifications
| Manufacturer Package Code | TSSOP-20 |
| Factory Lead Time | 13Weeks |
| YTEOL | 19 |
| Analog Input Voltage-Max | 3.6V |
| Analog Input Voltage-Min | -2.7 V |
| Converter Type | ADC, DELTA-SIGMA |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Linearity Error-Max (EL) | 0.0032% |
| Number of Analog In Channels | 2 |
| Number of Bits | 24 |
| Number of Functions | 1 |
| Output Bit Code | 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Sample Rate | 0.1536MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Supply Current-Max | 2.5mA |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP3561RT-E/ST:
Microchip Technology Inc 24-bit delta-sigma ADC, Single channel, 3V, TSSOP, Int Vref
Frequently Asked Questions
What resolution and linearity does the MCP3561RT-E/ST provide for precision sensor measurements?
The MCP3561RT-E/ST offers 24-bit resolution with a maximum integral linearity error of 0.0032%, corresponding to less than 1 LSB of nonlinearity at full scale. This precision level is appropriate for weighing systems, analytical instruments, and pressure sensors where measurement accuracy better than 1 part in 10,000 is required across the full analog input range of -2.7 V to +3.6 V.
How many analog input channels does the MCP3561RT-E/ST support, and what is the input voltage range?
The MCP3561RT-E/ST provides 2 analog input channels with a differential input range spanning -2.7 V to +3.6 V on a 3 V supply rail. This bipolar input capability allows direct connection to bridge sensor outputs and thermocouple amplifiers without additional level-shifting, simplifying the signal chain and reducing system component count by 2 to 4 passive components.
Does the MCP3561RT-E/ST include an internal voltage reference, and what benefit does this provide?
Yes, the MCP3561RT-E/ST integrates an internal voltage reference, eliminating the need for a dedicated external precision reference IC. This integration reduces BOM cost, saves at least 1 component placement on the PCB, and simplifies design by removing the reference noise coupling path — important in 24-bit ADC designs where reference noise directly limits dynamic range.
Which package does the MCP3561RT-E/ST use, and how does it affect PCB layout for high-accuracy ADC designs?
The MCP3561RT-E/ST is packaged in a TSSOP-20 (JESD-30 code R-PDSO-G20) with 0.65 mm pin pitch and a footprint of approximately 6.5 x 4.4 mm. The TSSOP format allows tight decoupling capacitor placement within 2 mm of the supply pins, reducing supply noise coupling into the 24-bit delta-sigma modulator and improving effective number of bits (ENOB) compared to wider-body packages.
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