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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MAX6250ACSA+T
IC VREF SERIES 0.02% 8SOIC
MAX6101EUR-T
IC VREF SERIES 0.4% SOT23-3
TL4050C41IDBZR
IC VREF SHUNT 0.5% SOT23-3
ADR512ARTZ-REEL7
IC VREF SHUNT 0.3% SOT23-3
TS3431CILT
IC VREF SHUNT ADJ 0.25% SOT23-3
TL431ACPW
IC VREF SHUNT ADJ 1% 8TSSOP
TL4051CQDBZR
IC VREF SHUNT ADJ 0.5% SOT23-3
LT6658AIDE-5#PBF
IC VREF SERIES 6V 0.05% 16DFN
MAX6129BEUK33+T
IC VREF SERIES 3.3V SOT23-5
LT1461BCS8-2.5#TRPBF
IC VREF SERIES 0.06% 8SOIC
LM4051AIX3-1.2+
PRECISION MICROPOWER SHUNT VREF
TLV431BIPK
IC VREF SHUNT ADJ 0.5% SOT89-3
ADR3420ARJZ-R2
IC VREF SERIES 0.1% SOT23-6
LM4041CYM3-1.2-TR
IC VREF SHUNT 0.5% SOT23-3
LT1027ECS8-5#TRPBF
IC VREF SERIES 0.1% 8SOIC
LT1019ACS8-2.5#TRPBF
IC VREF SERIES 0.05% 8SOIC
LM4050AEX3-3.3+T
IC VREF SHUNT 0.1% SC70-3
MAX6008AESA+
IC VREF SHUNT 0.2% 8SOIC
TS3431BILT
IC VREF SHUNT ADJ 0.5% SOT23-3
ZRC250F02TA
IC VREF SHUNT 2% SOT23