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
LM4140CCM-2.0/NOPB
IC VREF SERIES 0.1% 8SOIC
TLVH431AQDBVRQ1
IC VREF SHUNT ADJ 1% SOT23-5
TL1451ACPWR/1A
VREF 2.40-2.48 (LG INNOTE
LM4040CEX3-5.0+
LM4040 IMPROVED PRECISION MICROP
TS822ILT
IC VREF SHUNT 2% SOT23-3
MAX6043CAUT10+T
IC VREF SERIES 0.5% SOT23-6
MAX876AESA+T
IC VREF SERIES 0.03% 8SOIC
TL431ACLPM
IC VREF SHUNT ADJ 1% TO92-3
LM336BDR-2-5
IC VREF SHUNT 2% 8SOIC
LT1019IN8-10#PBF
IC VREF SERIES/SHUNT 0.2% 8DIP
LT1634BIS8-2.5#PBF
IC VREF SHUNT 0.05% 8SOIC
AP431SHBN1TR-G1
IC VREF SHUNT ADJ 1% SOT23
MCP1501-33E/SN
IC VREF SERIES 0.1% 8SOIC
REF02CSA+T
IC VREF SERIES 1% 8SOIC
MCP1501T-40E/SN
IC VREF SERIES 0.1% 8SOIC
MAX9679ETG+T
PROGRAMMABLE GAMMA REFERENCE
ADR370BRT-R2
IC VREF SERIES PREC SOT-23-3
ISL21009DFB825Z
IC VREF SERIES 0.16% 8SOIC
MAX6173AASA+
IC VREF SERIES 0.06% 8SOIC
MAX6520EUR-T
VOLTAGE REFERENCE