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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LM4040CEM3-5.0/V+T
IC VREF SHUNT 0.5% SOT23-3
LT6658AIMSE-1.2#TRPBF
IC VREF SERIES 6V 0.05% 16MSOP
LT1021BCN8-5#PBF
IC VREF SERIES 1% 8DIP
ISL60002DIH310Z-TK
IC VREF SERIES 0.49% SOT23-3
ADR425ARMZ
IC VREF SERIES 0.12% 8MSOP
REF3033AIDBZRQ1
IC VREF SERIES 0.2% SOT23-3
LT6658AIDE-1.8#TRPBF
IC VREF SERIES 6V 0.05% 16DFN
ADR421ARZ-REEL7
IC VREF SERIES 0.12% 8SOIC
LM4041BIM7X-1.2
IC VREF SHUNT 0.2% SC70-5
ADR5044BRTZ-R2
IC VREF SHUNT 0.1% SOT23-3
ICL8069ACSA
ICL8069 LOW-VOLTAGE REFERENCE
LT1236CCS8-10#PBF
IC VREF SERIES 0.1% 8SOIC
ISL21032CPH306Z
VOLTAGE REFERENCE
ADR433ARZ-REEL7
IC VREF SERIES 0.13% 8SOIC
MAX6126BASA25+
IC VREF SERIES 0.06% 8SOIC
TLV431BCDBVT
IC VREF SHUNT ADJ 0.5% SOT23-5
LT6658AHMSE-3.3#PBF
IC VREF SERIES 6V 0.05% 16MSOP
TLV431BIDCKT
IC VREF SHUNT ADJ 0.5% SC70-6
ADR381ARTZ-REEL7
IC VREF SERIES 0.24% SOT23-3
TL431BCDBVT
IC VREF SHUNT ADJ 0.5% SOT23-5