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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LM4040BIM3X-5.0/NOPB
IC VREF SHUNT 0.2% SOT23-3
MAX6162AESA+T
IC VREF SERIES 0.1% 8SOIC
TL431BCPKG3
IC VREF SHUNT ADJ 0.5% SOT89-3
LT6656BIDC-2.5#TRMPBF
IC VREF SERIES 0.2% 6DFN
TLVH431AMQDBZR,215
IC VREF SHUNT ADJ 1% TO236AB
AD588SE
VOLTAGE REFERENCE, 2 OUTPUT, 10V
MCP1501T-25E/SN
IC VREF SERIES 0.1% 8SOIC
LM4041BIM7X-1.2/NOPB
IC VREF SHUNT 0.2% SC70-5
LT1461BIS8-3#TRPBF
IC VREF SERIES 0.06% 8SOIC
MMTV4041
IC VREF SHUNT 0.5% SOT23-3
LM4050QCIM3-5.0/NOPB
IC VREF SHUNT 0.5% SOT23-3
REF6230IDGKR
IC VREF SERIES 0.05% 8VSSOP
AD580SH
IC VREF SERIES 1% TO52-3
NCP431BCSNT1G
IC VREF SHUNT ADJ 0.5% SOT23-3
LM4120AIM5-4.1/NOPB
IC VREF SERIES 0.2% SOT23-5
LM4040CIM-10.0
VOLTAGE REFERENCE
ADR06AUJZ-REEL7
IC VREF SERIES 0.2% TSOT5
REF02DSA
5V VOLTAGE REFERENCE
TL431ACLPR
IC VREF SHUNT ADJ 1% TO92-3
LT6656BIDC-1.25#TRMPBF
IC VREF SERIES 0.2% 6DFN