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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LM4040DIM3-2.5TR
IC VREF SHUNT 1% SOT23-3
REF3330AIDCKT
IC VREF SERIES 0.15% SC70-3
LT1009CLP
IC VREF SHUNT 0.2% TO92-3
X60003CIG3Z-41T1
IC VREF SERIES 0.06% SOT23-3
TL431ACZ
IC VREF SHUNT ADJ 1% TO92-3
MAX6143BASA25+
IC VREF SERIES 0.1% 8SOIC
MAX6165BESA+
IC VREF SERIES 0.1% 8SOIC
LM4050QCEM3X8.2/NOPB
IC VREF SHUNT 0.5% SOT23-3
LT1009IS8#PBF
IC VREF SHUNT 0.4% 8SOIC
LTC1798CS8-4.1#PBF
IC VREF SERIES 0.15% 8SOIC
REF3312AIDCKR
IC VREF SERIES 0.15% SC70-3
TLV431BCLPR
IC VREF SHUNT ADJ 0.5% TO92-3
LM4040B41QFTA
IC VREF SHUNT 0.2% SOT23
AD1585ART-REEL7
IC VREF SERIES PREC 5V SOT-23-3
MAX6143AASA50+
IC VREF SERIES 0.06% 8SOIC
NJM432SF-TE1
IC VREF SHUNT ADJ SOT23-5
MAX6133A30+T
IC VREF SERIES 0.06% 8UMAX
LM4121AIM5-1.2/NOPB
IC VREF SERIES 0.2% SOT23-5
ADR540ARTZ-REEL7
IC VREF SHUNT PREC 4.096V SOT23
MAX6133BASA41+T
IC VREF SERIES 0.08% 8SOIC