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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LT1431IN8#PBF
IC VREF SHUNT ADJ 0.4% 8DIP
LT6654AHS6-2.048#TRPBF
IC VREF SERIES 0.05% TSOT23-6
ISL60002BIH310Z-TK
IC VREF SERIES 0.1% SOT23-3
LM4040DEX3-2.1+T
IC VREF SHUNT 1% SC70-3
LM4040C82ILP
IC VREF SHUNT 0.5% TO92-3
LM4128BMF-1.8/NOPB
IC VREF SERIES 0.2% SOT23-5
REF3125AIDBZR
IC VREF SERIES 0.2% SOT23-3
LM336BMX-2.5/NOPB
IC VREF SHUNT 2% 8SOIC
ZTL432AFTA
IC VREF SHUNT ADJ 1% SOT23
LT6654AHS6-1.25#WTRPBF
IC VREF SERIES 0.05% TSOT23-6
AD2702UD/883B
IC VREF SERIES 14CDIP
ZXRE160AFT4-7
IC VREF SHUNT ADJ 0.5% 6DFN
TL431ACLPR5
VOLTAGE REFERENCE
LM431BIMX/NOPB
IC VREF SHUNT ADJ 1% 8SOIC
LTC6655CHLS8-4.096#PBF
IC VREF SERIES 0.05% 8CLCC
LTC6655CHMS8-5#PBF
IC VREF SERIES 0.05% 8MSOP
LM4041BIDBZT
IC VREF SHUNT ADJ 0.2% SOT23-3
LM4132CQ1MFT3.3
IC VREF SERIES 0.2% SOT23-5
TS4431AILT
IC VREF SHUNT 0.5% SOT23-5
LM4128DQ1MFX2.5/NOPB
IC VREF SERIES 1% SOT23-5