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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REF4132B50DBVRQ1
IC VREF SERIES 0.05% SOT23-5
MCP1502T-10E/CHY
IC 7 PPM 0.1% VOLTAGE REFERENCE
LT6654BHS6-2.5#TRMPBF
IC VREF SERIES 0.1% TSOT23-6
MAX6034BEXR30-T
VOLTAGE REFERENCE
LM4128AMFX-4.1/NOPB
IC VREF SERIES 0.1% SOT23-5
LM4050AIX3-4.1+
PRECISION MICROPOWER SHUNT VREF
LM4041CIDBZR
IC VREF SHUNT ADJ 0.5% SOT23-3
LM4040DIM3-2.0/NOPB
IC VREF SHUNT 1% SOT23-3
MAX6168AESA+
IC VREF SERIES 0.11% 8SOIC
MAX6173AASA+T
IC VREF SERIES 0.06% 8SOIC
ADR520BKS-R2
IC VREF SHUNT PREC 2.048V SC70-3
REF01HSZ
IC VOLT REFERENCE PREC 10V 8SOIC
TL431BILP
IC VREF SHUNT ADJ 0.5% TO92-3
TL4051C12QDBZR
IC VREF SHUNT 0.5% SOT23-3
LT6656ACS6-3#TRPBF
IC VREF SERIES 0.05% TSOT23-6
TLVH431ACLP
IC VREF SHUNT ADJ 1% TO92-3
MAX6195CESA+
IC VREF SERIES 0.2% 8SOIC
AD780BRZ
IC VREF SERIES 0.04%/0.03% 8SOIC
TLVH431BQDBVRQ1
IC VREF SHUNT ADJ 0.5% SOT23-5
LT6657AHMS8-5#PBF
IC VREF SERIES 0.1% 8MSOP