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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TS4431ILT
IC VREF SHUNT 1% SOT23-5
ISL21007DFB830Z-TK
IC VREF SERIES 0.16% 8SOIC
MAX876BESA+
IC VREF SERIES 0.05% 8SOIC
TLVH431ACDBZR
IC VREF SHUNT ADJ 1% SOT23-3
MAX6138AEXR30+T
IC VREF SHUNT 0.1% SC70-3
LM4132EMFX-1.8/NOPB
IC VREF SERIES 0.5% SOT23-5
LTC6655BHMS8-2.5#PBF
IC VREF SERIES 0.025% 8MSOP
LT6658BIMSE-1.2#TRPBF
IC VREF SERIES 6V 0.1% 16MSOP
LM4051BEX3-1.2+T
IC VREF SHUNT 0.2% SC70-3
LM336MX-2.5
IC VREF SHUNT 4% 8SOIC
LM4040AIX3-2.5+T
IC VREF SHUNT 0.1% SC70-3
LM285M-1.2/NOPB
IC VREF SHUNT 1% 8SOIC
LM4040BEX3-5.0-T
PRECISION MICROPOWER SHUNT VREF
MAX6143AASA10
VOLTAGE REFERENCE
TL431AIPE4
TL431 - ADJUSTABLE PRECISION SHU
LM4128AQ1MFX2.0/NOPB
IC VREF SERIES 0.1% SOT23-5
LM4140BCMX-2.5/NOPB
IC VREF SERIES 0.1% 8SOIC
LT1004ILP-1-2
VOLTAGE REFERENCE
MCP1501T-10E/RW
IC VREF SERIES 0.1% 8WDFN
MAX6034AEXR25
VOLTAGE REFERENCE