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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TL4050C41QDCKR
IC VREF SHUNT 0.5% SC70-5
LT6654AIS6-3#TRPBF
IC VREF SERIES 0.05% TSOT23-6
TLVH432BCPK
IC VREF SHUNT ADJ 0.5% SOT89-3
LM4041DILP
IC VREF SHUNT ADJ 1% TO92-3
ADR441ARZ
IC VREF SERIES 0.12% 8SOIC
NJM431M#
IC VREF SHUNT ADJ 2.2% 8DMP
LT6656AIDC-1.25#TRPBF
IC VREF SERIES 0.1% 6DFN
REF3130AIDBZR
IC VREF SERIES 0.2% SOT23-3
TS4061BICT-1.225
IC VREF SHUNT 0.2% SOT323
REF5020AIDGKT
IC VREF SERIES 0.1% 8VSSOP
ADR06ARZ-REEL7
IC VREF SERIES 0.2% 8SOIC
LT6654BIS6-2.048#TRMPBF
IC VREF SERIES 0.1% TSOT23-6
LM4050CIM3X-5.0/NOPB
IC VREF SHUNT 0.5% SOT23-3
LM4040AIM3X-4.1/NOPB
IC VREF SHUNT 0.1% SOT23-3
LT1236AIS8-5#TRPBF
IC VREF SERIES 0.05% 8SOIC
LT1021BCN8-7#PBF
IC VREF SERIES/SHUNT 0.71% 8DIP
MAX674CSA
MAX674 - THREE TERMINAL VOLTAGE
LM4128CQ1MF2.5/NOPB
IC VREF SERIES 0.5% SOT23-5
LM285AMX-1.2
VOLTAGE REFERENCE
TL431AIDMR2G
IC VREF SHUNT ADJ 1% MICRO8