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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LM4040C50QDBZR
IC VREF SHUNT 0.5% SOT23-3
MCP1501T-18E/RW
IC VREF SERIES 0.1% 8WDFN
LM4041DQDBZR
IC VREF SHUNT ADJ 1% SOT23-3
TLVH431QLPR
IC VREF SHUNT ADJ 1.5% TO92-3
TL431AIYDT
IC VREF SHUNT ADJ 1% 8SO
LT1460ACS8-10#PBF
IC VREF SERIES 0.075% 8SOIC
REF3425IDBVR
IC VREF SERIES 0.05% SOT23-6
REF3230AIDBVR
IC VREF SERIES 0.2% SOT23-6
LM4040C10ILP
IC VREF SHUNT 0.5% TO92-3
LT1790AIS6-2.048#TRPBF
IC VREF SERIES 0.05% TSOT23-6
LM4041C12IDBZR
IC VREF SHUNT 0.5% SOT23-3
LM336MX-5.0
IC VREF SHUNT 2% 8SOIC
TL431AIDR2G
IC VREF SHUNT ADJ 1% 8SOIC
TS4061AILT-1.225
IC VREF SHUNT 0.1% SOT23-3
AD581LH/+
VOLTAGE REFERENCE, 10V, MBCY3
LM4040DIM3X-10
IC VREF SHUNT 1% SOT23-3
REF1941AIDDCR
IC VREF SERIES 0.1% SOT23-5
LM4051BIM3X-1.2/NOPB
IC VREF SHUNT 0.2% SOT23-3
MAX6043CAUT10-T
VOLTAGE REFERENCE
8503001YA
PRECISION VREF, THIN FILM