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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LM4128DMF-2.5/NOPB
IC VREF SERIES 1% SOT23-5
LT1461CIS8-4#TRPBF
IC VREF SERIES 0.08% 8SOIC
MAX6043BAUT41-T
VOLTAGE REFERENCE
LM4040AIX3-3.0+T
IC VREF SHUNT 0.1% SC70-3
REF2030AIDDCT
IC VREF SERIES 0.05% SOT23-5
LT6656BCS6-1.25#TRMPBF
IC VREF SERIES 0.1% TSOT23-6
LM4051BIX3-1.2+T
LM4051 50PPM PER DEGREE CELSIUS
AP432RL-7
IC VREF SHUNT ADJ 1% SC59R
LM236DR-2-5
IC VREF SHUNT 2% 8SOIC
LM4040DIM3-5.0
LM4040-N 100-PPM/C PRECISION MIC
LM4050BEM3-5.0+T
IC VREF SHUNT 5V SOT23-3
TL1431CPW
IC VREF SHUNT ADJ 0.4% 8TSSOP
LT6658BHMSE-5#TRPBF
IC VREF SERIES 6V 0.1% 16MSOP
NJM2373AU-TE1#
IC VREF SHUNT ADJ 1% SOT89-3
LM4040CIM3X-2.5/7ZDJ
LM4040-N 100-PPM/C PRECISION MIC
LM4041BIM3-1.2+T
IC VREF SHUNT 1.225V SOT23
TL431BFDT,215
IC VREF SHUNT ADJ 0.5% TO236AB
LM285D-2.5R2
IC VREF SHUNT 1.5% 8SOIC
ADR03WARZ-RL
IC VREF SERIES 0.2% 8SOIC
TLVH431BILPR
IC VREF SHUNT ADJ 0.5% TO92-3