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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LT1236CCS8-10#TRPBF
IC VREF SERIES/SHUNT 0.1% 8SOIC
ADR421BRZ-REEL7
IC VREF SERIES 0.04% 8SOIC
LM4040CIX3-5.0
PRECISION MICROPOWER SHUNT VREF
LM4051CEM3-1.2+T
IC VREF SHUNT 1.225V SOT23
MAX6125ESA+T
IC VREF SERIES 1% 8SOIC
LT6656AIS6-2.5#TRMPBF
IC VREF SERIES 0.05% TSOT23-6
MAX6163BESA+T
IC VREF SERIES 0.17% 8SOIC
MAX6164AESA+
IC VREF SERIES 0.05% 8SOIC
LT1460BIS8-5#TRPBF
IC VREF SERIES 0.1% 8SOIC
LM4050CEX3-3.3/V+T
IC VREF SHUNT 0.5% SC70-3
LT6657BHMS8-3#TRPBF
IC VREF SERIES 0.1% 8MSOP
LM4040D33QFTA
IC VREF SHUNT 1% SOT23
TLV431BQDBZT
IC VREF SHUNT ADJ 0.5% SOT23-3
MAX9672ETI+TG0E
PROGRAMMABLE GAMMA REFERENCE
MAX6220ASA-4.1
VOLTAGE REFERENCE
LM4050QBIM3X2.0/NOPB
IC VREF SHUNT 0.2% SOT23-3
LM285BXMX-2.5/NOPB
IC VREF SHUNT 1.5% 8SOIC
LM4041BIX3-1.2
PRECISION MICROPOWER SHUNT VREF
LM4140BCM-1.2/NOPB
IC VREF SERIES 0.1% 8SOIC
MAX6037BAUK33-T
LOW-POWER, FIXED REFERENCE