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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Categories
LM4050BIX3-5.0-T
PRECISION MICROPOWER SHUNT VREF
MAX6037BAUK30-T
LOW-POWER, FIXED REFERENCE
MAX6021AEUR+T
IC VREF SERIES 0.24% SOT23-3
REF3450IDBVR
IC VREF SERIES 0.05% SOT23-6
LM4132AQ1MFR3.0
IC VREF SERIES 0.05% SOT23-5
ADR130AUJZ-REEL7
IC VREF SERIES 0.7% TSOT6
TL431BIP
IC VREF SHUNT ADJ 0.5% 8DIP
LT1004ID-1-2
IC VREF SHUNT 0.32% 8SOIC
MAX6007BEUR-T
VOLTAGE REFERENCE
LM4040B20IDCKR
IC VREF SHUNT 0.2% SC70-5
ISL21009CFB841Z-TK
IC VREF SERIES 0.08% 8SOIC
ATL432LIAQDBZR
IC VREF SHUNT ADJ 1% SOT23-3
AP431SAZTR-G1
IC VREF SHUNT ADJ 0.5% TO92
TS432BCX RFG
IC VREF SHUNT ADJ 1% SOT23
ADR3425ARJZ-R2
IC VREF SERIES 0.1% SOT23-6
MAX6023EBT45+T
IC VREF SERIES 4.5V 5UCSP
LM4040CIM3-5.0/NOPB
IC VREF SHUNT 0.5% SOT23-3
LM4040BIM3X-2.5
IC VREF SHUNT 0.2% SOT23-3
TL431ACDBVT
IC VREF SHUNT ADJ 1% SOT23-5
LT6658AHDE-3#PBF
IC VREF SERIES 6V 0.05% 16DFN