PMIC - Voltage Reference
PMIC - Voltage Reference: Precision Power Management Components
Definition & Functionality
PMIC - Voltage References are specialized integrated circuits (ICs) within the Power Management IC (PMIC) category, designed to generate a stable, precise DC voltage regardless of variations in input voltage, load conditions, or temperature. These components serve as critical "voltage standards" for analog and mixed-signal circuits, ensuring accuracy in applications like data converters, sensors, and power supplies.
Types & Key Variations
1. Series Voltage References: Provide a fixed output with low dropout voltage, ideal for battery-powered devices.
2. Shunt Voltage References: Operate like precision Zener diodes, suited for high-accuracy, low-current systems.
3. Adjustable Voltage References: Allow output customization via external resistors, offering design flexibility.
4. Bandgap References: Leverage semiconductor bandgap properties for ultra-stable outputs across temperature ranges.
5. Buried Zener References: Deliver the highest precision (e.g., 0.04%) for metrology or medical equipment.
Selection Guidelines
- Accuracy & Tolerance: Prioritize < 1% tolerance for precision systems (e.g., ADCs).
- Temperature Coefficient (TempCo): Choose <10ppm/ C for environments with thermal fluctuations.
- Noise Performance: Opt for low-noise (<10 Vpp) designs in sensitive analog circuits.
- Package & Power: Match SOT-23 (portable) or SOIC (industrial) packages to your PCB constraints.
- Long-Term Stability: Critical for automotive/industrial apps; verify datasheet aging specs (e.g., 50ppm/1000hr).
Why It Matters
Voltage References are the unsung heroes of reliable electronics, minimizing drift and noise in power rails. From IoT sensor calibration to aerospace systems, selecting the right type ensures optimal performance and longevity. Partner with trusted suppliers (e.g., Texas Instruments, Analog Devices) to source certified components with traceable quality data.
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LM4040C25MDBZTEP
IC VREF SHUNT 0.64% SOT23-3
MAX6138CEXR12+T
IC VREF SHUNT 0.5% SC70-3
ADR02CRZ
IC VREF SERIES 0.1% 8SOIC
TLV431BILPR
IC VREF SHUNT ADJ 0.5% TO92-3
LM4041DIDBZT
IC VREF SHUNT ADJ 1% SOT23-3
MAX6071BAUT12+T
IC VREF SERIES 0.08% SOT23-6
MAX6133AASA50+T
IC VREF SERIES 0.04% 8SOIC
MAX6138BEXR30
VOLTAGE REFERENCE
TL431BVLPG
IC VREF SHUNT ADJ 0.4% TO92-3
LM4050CEM3X-2.5/NOPB
IC VREF SHUNT 0.5% SOT23-3
LM4128CQ1MFX3.0/NOPB
IC VREF SERIES 0.5% SOT23-5
LM4128DMF-3.0
IC VREF SERIES 1% SOT23-5
MAX6198BESA+T
IC VREF SERIES 0.12% 8SOIC
REF3318AIDCKT
IC VREF SERIES 0.15% SC70-3
MAX6143BASA10+
IC VREF SERIES 0.1% 8SOIC
REF43GS-REEL
IC VREF SERIES 0.1% 8SOIC
TL4050A25QDBZT
IC VREF SHUNT 0.1% SOT23-3
LM4040A10IDBZT
IC VREF SHUNT 0.1% SOT23-3
REF43GSZ
IC VREF SERIES 0.1% 8SOIC
AS431AKTR-G1
IC VREF SHUNT ADJ 0.5% SOT23-5