MCP33121D-05-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP33121D-05-E/MS is a 14-bit 500ksps single-channel differential SAR ADC with SPI interface in a compact 10-pin MSOP package. It features 1.3µs maximum conversion time, 0.009% maximum linearity error, and accepts ±5.1V differential analog inputs. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- MCP33121D-05-E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7863(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
- 14-bit resolution at 500 ksps throughput rate provides high-speed, precision data acquisition with 1.3µs maximum conversion time for real-time signal monitoring
- Differential ±5.1V input range accommodates bipolar sensor signals directly without a level-shifting circuit, simplifying the analog front-end design
- 0.009% maximum integral non-linearity (INL) ensures accurate conversion across the full input range, meeting the performance demands of industrial measurement and medical instrumentation
Applications
The MCP33121D-05-E/MS is suited for high-speed industrial data-acquisition systems, oscilloscope front-ends, and motor-current feedback loops that require 14-bit accuracy at 500ksps sampling rates. Its differential ±5.1V input range directly interfaces with bridge sensors, accelerometers, and current-sense amplifiers operating on bipolar supplies. The MSOP-10 footprint and SPI interface simplify integration into space-constrained embedded systems requiring precision ADC capability adjacent to a microcontroller.
Specifications
| Manufacturer Package Code | MSOP-10 |
| Factory Lead Time | 7Weeks |
| Date Of Intro | 2018-11-14 |
| YTEOL | 3 |
| Analog Input Voltage-Max | 5.1V |
| Analog Input Voltage-Min | -5.1 V |
| Conversion Time-Max | 1.3 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | S-PDSO-G10 |
| Linearity Error-Max (EL) | 0.00915% |
| Number of Analog In Channels | 1 |
| Number of Bits | 14 |
| Number of Functions | 1 |
| Output Bit Code | 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Sample Rate | 0.5MHz |
| Screening Level | AEC-Q100; TS 16949 |
| Supply Current-Max | 2mA |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What throughput rate and resolution does MCP33121D-05-E/MS offer, and how does 1.3µs conversion time translate to effective sampling rate?
MCP33121D-05-E/MS provides 14-bit resolution with a 500ksps maximum throughput rate. The 1.3µs maximum conversion time per sample corresponds to the ADC active phase, but with SPI clock overhead the effective maximum sample rate is 500,000 samples per second. At 500 ksps, the Nyquist limit is 250 kHz input bandwidth, suitable for audio-frequency precision measurement, vibration analysis up to 200 kHz, and motor control feedback loops.
How should the differential inputs of MCP33121D-05-E/MS be driven for optimal 14-bit accuracy in a ±5V bipolar measurement system?
Drive IN+ and IN- with a low-impedance differential source or a precision instrumentation amplifier with less than 10Ω output impedance. The SAR ADC's input capacitance charges during acquisition; for 14-bit settling within the acquisition window, the driving source time constant (R_source × C_input) must settle to less than 0.5 LSB, requiring R_source below approximately 50Ω at 500 ksps. Add a 10Ω series resistor and 1nF differential capacitor at the inputs to suppress high-frequency noise without degrading bandwidth.
For a 3.3V microcontroller SPI bus, how is MCP33121D-05-E/MS interfaced, and what SPI clock frequency does it support?
MCP33121D-05-E/MS uses a standard 4-wire SPI interface (SCK, SDI, SDO, CS) and operates from a 2.7V to 5.5V digital supply, making it directly compatible with 3.3V MCU logic levels. It supports SPI clock frequencies up to 20 MHz in Mode 0,0 and Mode 1,1, transferring 16 bits per conversion (14 data bits plus 2 null bits). At 20 MHz SPI clock, a 16-bit transfer takes 800ns, fitting within the 1.3µs conversion budget at 500 ksps.
When is MCP33121D-05-E/MS preferred over MCP3201 for a precision sensor interface design?
MCP33121D-05-E/MS offers 14-bit resolution versus MCP3201's 12 bits, and 500 ksps versus MCP3201's 100 ksps, providing 4× finer voltage resolution (0.3mV LSB at 5V versus 1.2mV) and 5× faster sampling. Choose MCP33121D-05-E/MS when measuring fast-changing signals above 50 kHz bandwidth, when 12-bit accuracy is insufficient (less than 0.03% full-scale error), or when differential input rejection of common-mode supply noise is needed. MCP3201 is preferred for cost-sensitive single-ended DC applications where 12-bit accuracy and 100 ksps are adequate.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7863 | $0.79 |
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