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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LTC6655BHLS8-5#PBF
IC VREF SERIES 0.025% 8CLCC
LM385BXZ-2.5
TWO TERMINAL VOLTAGE REFERENCE,
LM4051BIM3-1.2/NOPB
IC VREF SHUNT 0.2% SOT23-3
LM4040AIM3-2.5/NOPB
IC VREF SHUNT 0.1% SOT23-3
REF02CP+
IC VREF SERIES 1% 8DIP
LM4040D25QDBZR
IC VREF SHUNT 1% SOT23-3
LT6654AHS6-3#WTRMPBF
IC VREF SERIES 0.05% TSOT23-6
ZXRE125CFTA
IC VREF SHUNT 0.5% SOT23
ADR06AUJ-R2
IC VREF SERIES PREC 3V TSOT-23-5
LTC6655CHLS8-2.5#PBF
IC VREF SERIES 0.05% 8CLCC
LM236H-2.5
IC VREF SHUNT 2% TO46-3
LT1790BIS6-3.3#TRM
LT1790 - MICROPOWER SOT-23 LOW D
ISL60002BIH320Z-TK
IC VREF SERIES 0.05% SOT23-3
LT1009ILP
IC VREF SHUNT 0.2% TO92-3
LM285BYMX/NOPB
IC VREF SHUNT ADJ 1% 8SOIC
LM285D-1-2
IC VREF SHUNT 1% 8SOIC
TLE2426ILP
IC VREF GND REF ADJ 1% TO92-3
MAX6325CSA+T
IC VREF SERIES 0.04% 8SOIC
LM4050QAEM3X8.2/NOPB
IC VREF SHUNT 0.1% SOT23-3
ADR434AR
IC VREF SERIES 4.096V 8SOIC