MCP3561R-E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP3561R-E/ST is a 24-bit delta-sigma ADC with integrated 3 V voltage reference, 2 analog input channels, and SPI interface, offering 0.0032% maximum linearity error in a TSSOP-20 package for precision industrial and scientific measurement.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP3561R-E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.7800(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% linearity error enables high-accuracy measurement of small sensor signals without external precision amplifiers
- Integrated on-chip voltage reference eliminates the need for an external precision Vref, reducing BOM cost and board space
- Differential input range from -2.7 V to 3.6 V with 2-channel mux supports ratiometric bridge-sensor measurements directly from single supply
Applications
The MCP3561R-E/ST is optimized for precision industrial sensors, weigh scales, gas analyzers, and chemical instrumentation requiring 24-bit resolution with an integrated voltage reference. Its delta-sigma architecture with programmable data rate and gain makes it suitable for temperature measurement systems using RTDs or thermocouples, as well as medical diagnostic equipment demanding low noise and high linearity across -40°C to +125°C.
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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the integrated voltage reference in MCP3561R-E/ST benefit a precision weigh-scale design?
The MCP3561R-E/ST includes an internal 3 V precision reference, removing the need for a separate external Vref chip. In a weigh-scale using a Wheatstone bridge load cell, the ratiometric configuration with 24-bit resolution and 0.0032% linearity error directly yields sub-milligram resolution without additional reference circuitry, simplifying the analog signal chain.
What input voltage range can MCP3561R-E/ST measure on its 2 analog channels?
The differential analog input spans -2.7 V to +3.6 V, with 2 multiplexed single-ended or 1 differential channel pair. A programmable gain amplifier (PGA) of 1× to 64× extends effective input sensitivity, making it suitable for thermocouple signals in the microvolt range or bridge sensors with millivolt-level full-scale outputs.
For a TSSOP-20 footprint, how does MCP3561R-E/ST compare to a separate ADC-plus-external-reference solution in terms of board area?
The TSSOP-20 package measures approximately 6.5 mm × 4.4 mm and integrates a 24-bit ADC plus 3 V reference in that single footprint. A discrete solution combining a separate 20-pin ADC with an external SO-8 reference occupies roughly 2× the PCB area, so the integrated approach saves approximately 30 mm² while also eliminating inter-component routing that could introduce noise coupling.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.0000 | $3.00 |
| 74+ | $2.3588 | $174.55 |
| 100+ | $2.2800 | $228.00 |
| 296+ | $2.2424 | $663.75 |
| 1000+ | $2.1900 | $2190.00 |
| 2516+ | $1.7800 | $4478.48 |
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