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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LM4041CILP
IC VREF SHUNT ADJ 0.5% TO92-3
TLVH431BIDCKT
IC VREF SHUNT ADJ 0.5% SC70-6
MAX6190CESA+T
IC VREF SERIES 1.25V 8SOIC
LM4050AIX3-4.1
PRECISION MICROPOWER SHUNT VREF
REF191GS
IC VREF SERIES 0.5% 8SOIC
REF6033IDGKR
IC VREF SERIES 0.05% 8VSSOP
REF6150IDGKR
IC VREF SERIES 0.05% 8VSSOP
TL431CPSR
IC VREF SHUNT ADJ 2.2% 8SO
LT1236ACS8-10#TRPBF
IC VREF SERIES 0.05% 8SOIC
MAX6126BASA50+
IC VREF SERIES 0.06% 8SOIC
LM4041DIDCKT
IC VREF SHUNT ADJ 1% SC70-5
MAX6198BESA-TG069
VOLTAGE REFERENCE
LT1790ACS6-2.5#TRMPBF
IC VREF SERIES 0.05% TSOT23-6
ZXRE250BSA-7
IC VREF SHUNT ADJ 0.5% SOT23
LM4120IM5X-2.5
IC VREF SERIES 0.5% SOT23-5
TL431CZ
IC VREF SHUNT ADJ 2.21% TO92-3
MAX6009AEUR+T
IC VREF SHUNT 0.2% SOT23-3
REF3140AIDBZR
IC VREF SERIES 0.2% SOT23-3
AZ432AZTR-G1
IC VREF SHUNT ADJ TO92
TLVH432CPK
IC VREF SHUNT ADJ 1.5% SOT89-3