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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ADR550BRT-REEL7
IC VREF SHUNT PREC 5V SOT-23-3
ISL21080CIH341Z-TK
IC VREF SERIES 0.2% SOT23-3
TL4050C10IDBZR
IC VREF SHUNT 0.5% SOT23-3
LM4140CCMX-1.2/NOPB
IC VREF SERIES 0.1% 8SOIC
TSM6025AEUR+T
IC VREF SERIES 0.2% SOT23-3
REF3033TB-GT3
IC VREF SERIES 0.2% SOT23-3
TLVH431NACDBZRR
IC VREF SHUNT ADJ 1.5% TO236AB
LM4041DEX3-1.2+T
IC VREF SHUNT 1.225V SC70
LM4051BIM3X-1.2
IC VREF SHUNT 0.2% SOT23-3
LM4040AIM3-2.5
IC VREF SHUNT 0.1% SOT23-3
REF102CU/2K5
IC VREF SERIES 0.025% 8SOIC
LM4132AQ1MFT3.0
IC VREF SERIES 0.05% SOT23-5
ZXRE4041CFTA
IC VREF SHUNT 0.5% SOT23
LM4132CMF-2.0/NOPB
IC VREF SERIES 0.2% SOT23-5
LM431CCM3/NOPB
IC VREF SHUNT -0.6/+0.4% SOT23-3
TL4050A41IDCKR
IC VREF SHUNT 0.1% SC70-5
TLE2426MDREP
IC VREF GND REF ADJ 1% 8SOIC
LT6654BHLS8-4.096#PBF
IC VREF SERIES 0.1% 8CLCC
TLVH431ACDCKT
IC VREF SHUNT ADJ 1% SC70-6
ZRT050GC1TA
IC VREF SHUNT 1% SOT223