MCP45HV51-502E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip MCP45HV51-502E/ST is a high-voltage single-channel digital potentiometer with 5 kΩ end-to-end resistance and 256 wiper positions, controlled via I2C 2-wire serial interface in a 14-pin TSSOP package. It supports resistor array values of 5 kΩ, 10 kΩ, and 50 kΩ variants for flexible circuit tuning. Designed for programmable gain, bias adjustment, and calibration applications in industrial and high-voltage analog designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP45HV51-502E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4300(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
- 5 kΩ end-to-end resistance with 256-position linear wiper for precise digital control
- I2C 2-wire serial control interface for easy MCU integration without dedicated SPI bus
- High-voltage tolerant design supporting resistor array options of 5 kΩ, 10 kΩ, and 50 kΩ
- 14-pin TSSOP package with compact SMT footprint
- Single-channel potentiometer function in space-efficient package
- Pb-free, JESD-609 e3 RoHS-compliant construction for global market eligibility
Applications
The MCP45HV51-502E/ST is used in programmable gain amplifier circuits, automatic gain control loops, and calibration trim networks where a digitally adjustable 5 kΩ to 50 kΩ resistance is needed under I2C microcontroller command. Its high-voltage tolerance makes it suitable for industrial process control, motor drive bias networks, and analog front-end circuits that operate at voltage levels exceeding standard 5 V logic supply ranges.
Specifications
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 13 |
| Additional Feature | THE RESISTOR ARRAY VALUES ARE 5000 OHM,10000 OHM, 50000 OHM |
| Bandwidth-Nom | 0.024kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 256 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 18V |
| Resistor Terminal Voltage-Min | -18 V |
| Screening Level | AEC-Q100; TS 16949 |
| Supply Current-Max | 0.65mA |
| Supply Voltage-Nom | 3.5V |
| Surface Mount | YES |
| Temperature Coefficient-Nom | 100ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 100000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many discrete resistance steps does the MCP45HV51-502E/ST offer, and what step size does each wiper position represent for a 5 kΩ variant?
The MCP45HV51-502E/ST provides 256 linear wiper positions across its 5 kΩ end-to-end resistance, yielding a step size of approximately 19.5 Ω per position. This resolution is adequate for programmable gain setting, bias trimming, and calibration adjustments in analog circuits where coarse-to-medium resistance granularity is sufficient.
What communication interface does MCP45HV51-502E/ST use, and how does I2C simplify multi-device integration on a shared bus?
The MCP45HV51-502E/ST uses a 2-wire I2C serial control interface, allowing multiple digital potentiometers to share the same SDA and SCL lines with unique device addresses. This reduces pin count on the host microcontroller compared to SPI implementations requiring individual chip-select lines for each potentiometer in multi-channel designs, simplifying PCB routing in calibration and gain-control systems.
When is the 50 kΩ resistor array variant of the MCP45HV51 family preferred over the 5 kΩ variant for a high-impedance amplifier gain network?
The 50 kΩ variant is preferred when the digital potentiometer is used in a feedback or gain-setting network for a high-impedance instrumentation amplifier, where a 5 kΩ series resistance would excessively load the amplifier input or exceed the amplifier's specified external resistance range. Using a 50 kΩ element keeps loading errors small and maintains amplifier accuracy across the 256 gain steps achievable with the same I2C command set.
What lifecycle expectancy and sourcing lead time apply to MCP45HV51-502E/ST for production designs requiring multi-year supply continuity?
The MCP45HV51-502E/ST has a YTEOL indicator of 13 years and a factory lead time of approximately 7 weeks, making it suitable for production design-ins that require stable supply over a decade-long product lifecycle. The JESD-609 e3 lead-free classification and RoHS compliance further support its use in global markets requiring environmental documentation for industrial and automotive-adjacent applications.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.0000 | $2.00 |
| 25+ | $1.6600 | $41.50 |
| 100+ | $1.5100 | $151.00 |
| 1000+ | $1.4600 | $1460.00 |
| 2592+ | $1.4500 | $3758.40 |
| 5000+ | $1.4300 | $7150.00 |
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