Overview: The MCP1525 and MCP1541 are precision voltage reference devices by Microchip Technology Inc., providing stable output voltages of 2.5V and 4.096V, respectively. They are ideal for applications in battery-powered systems, instrumentation, and data acquisition systems.
Key Features:- Output Voltages: 2.5V (MCP1525) and 4.096V (MCP1541)
- Initial Accuracy: ±1% (max.)
- Temperature Drift: ±50 ppm/°C (max.)
- Output Current Drive: ±2 mA
- Maximum Input Current: 100 µA at +25°C
- Package Options: TO-92 and SOT-23-3
- Operating Temperature Range: -40°C to +85°C
Applications: Suitable for battery-powered systems, handheld instruments, process control, test equipment, communications, medical equipment, and precision power supplies. Compatible with 8-bit, 10-bit, and 12-bit ADCs and DACs.
Electrical Characteristics:- Absolute Maximum Ratings: Input voltage up to 7.0V, input current up to 20 mA, and output current up to ±20 mA.
- DC Electrical Specifications: Output voltage for MCP1525 ranges from 2.475V to 2.525V, and for MCP1541 from 4.055V to 4.137V.
- Temperature Specifications: Operating temperature range is -40°C to +125°C, with storage temperature range from -65°C to +150°C.
Performance Curves: Includes graphs showing output voltage versus ambient temperature, load regulation, input current, and line regulation, illustrating device behavior under various conditions.
Pin Descriptions: Three pins: VIN (input voltage), VOUT (output voltage), and VSS (ground).
Application Information: Basic circuit configuration is provided, emphasizing proper capacitor placement for stability. A 0.1 µF ceramic capacitor is recommended for noise reduction, and load capacitance between 1 µF and 10 µF is suggested for stabilization.
Specifications: No input capacitor is required across VIN to VSS, but a 0.1 µF capacitor is recommended for stability. Load capacitance (CL) should be between 1 µF and 10 µF.
Procedures: For input noise rejection, a 0.1 µF capacitor is suggested. An RC filter and op amp buffer are recommended for output noise reduction, with specific component values for a low-pass filter.
Norms and Recommendations: PCB layout considerations are crucial to minimize mechanical stress, especially for SOT-23-3 packages. Recommendations include mounting the reference on low-stress PCB areas.
Application Circuits: Includes typical circuits, such as a negative voltage reference using the MCP606 amplifier and a configuration for a 12-bit ADC reference.
Packaging Information: Details on package marking and dimensions for TO-92 and SOT23 packages, including JEDEC equivalents and measurement limits.
Revision History: Revision B includes added bandwidth and capacitor specifications, corrected plots, and updated package markings.
Product Identification System: Information on ordering and product identification, with examples of part numbers and configurations.