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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TL4050B41IDBZR
IC VREF SHUNT 0.2% SOT23-3
LT6660KCDC-10#TRMPBF
IC VREF SERIES 0.5% 3DFN
LT6654BMPS6-2.048#TRMPBF
IC VREF SERIES 0.1% TSOT23-6
AD587KRZ
IC VREF SERIES 0.05% 8SOIC
LM4040CEM3-2.5+T
IC VREF SHUNT 0.5% SOT23-3
REF6133IDGKT
IC VREF SERIES 0.05% 8VSSOP
LT6650HS5#TRMPBF
IC VREF SERIES 1.5% TSOT23-5
MAX6325ESA+
IC VREF SERIES 0.04% 8SOIC
LT6656BIDC-4.096#TRMPBF
IC VREF SERIES 0.2% 6DFN
ADR420BRZ
IC VREF SERIES 0.05% 8SOIC
MAX6126BASA41+
IC VREF SERIES 0.06% 8SOIC
LM431BCZX
IC VREF SHUNT ADJ 1% TO92-3
ISL60002BAH333Z-T7A
IC VREF SERIES 0.03% SOT23-3
AD1585ARTZ-R2
IC VREF SERIES 1% SOT23-3
LT6658BIDE-2.5#TRPBF
IC VREF SERIES 6V 0.1% 16DFN
LM4050QCEM3-2.0/NOPB
IC VREF SHUNT 0.5% SOT23-3
ADR433ARMZ
IC VREF SERIES 0.13% 8MSOP
MAX6033CAUT41
VOLTAGE REFERENCE
MCP1541T-I/TT
IC VREF SERIES 1% SOT23-3
REF102CU
IC VREF SERIES 0.025% 8SOIC