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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NCP431AVLPRAG
IC VREF SHUNT ADJ 1% TO92
TLV431BCDBVR
IC VREF SHUNT ADJ 0.5% SOT23-5
REF3112AIDBZR
IC VREF SERIES 0.2% SOT23-3
LM4128BMFX-1.8/NOPB
IC VREF SERIES 0.2% SOT23-5
ADR4530ARZ
IC VREF SERIES 0.04% 8SOIC
TL4050B50IDBZT
IC VREF SHUNT 0.2% SOT23-3
LTC6655CHLS8-5#PBF
IC VREF SERIES 0.05% 8CLCC
REF191GPZ
IC VOLT REF MICROPWR 2.048V 8DIP
ISL21007BFB825Z-TK
IC VREF 8SOIC
LM4040CIM3-3.0
IC VREF SHUNT 0.5% SOT23-3
TL431BCLPG
IC VREF SHUNT ADJ 0.4% TO92-3
MAX6133A41+
IC VREF SERIES 0.06% 8UMAX
TLV431AIDBVT
IC VREF SHUNT ADJ 1% SOT23-5
TL431BID
IC VREF SHUNT ADJ 0.5% 8SOIC
TS432AIX RFG
IC VREF SHUNT 18V 1% SOT23
LT6656BCS6-5#TRMPBF
IC VREF SERIES 0.1% TSOT23-6
MCP1502T-12E/CHY
IC 7 PPM 0.1% VOLTAGE REFERENCE
REF3020TB-GT3
IC VREF SERIES 0.2% SOT23-3
ADR425CR-REEL7
IC VREF PREC 5V 10MA OUT 8-SOIC
LM3411AN-3.3
VOLTAGE REFERENCE