Voltage Regulators
Products (505)
2EP110RXTMA1 - 5W Full-Bridge Transformer Driver | Infineon
The Infineon 2EP110RXTMA1 is a high-performance 5 W full-bridge transformer driver PMIC housed in a PG-TSSOP-8 package, designed to supply isolated gate-drive power for IGBT and SiC MOSFET half-bridge stages. Per the Infineon 2EP1xxR family datasheet, it supports a 20 V input rail and operates at fixed switching frequencies of 50 kHz and 65 kHz (frequency-selectable), with integrated MOSFET half-bridges that directly drive a small centre-tapped transformer. What is a transformer driver PMIC? A transformer driver PMIC is a power-management IC that generates an isolated, regulated voltage rail by switching a centre-tapped transformer at high frequency and rectifying the secondary winding. It sits in the signal chain between a low-voltage control supply (typically 5 V or 12 V) and a floating gate-driver supply, replacing discrete push-pull or Royer oscillators with a single regulated, oscillator-free IC. Within the broader taxonomy: transformer driver PMIC -> isolated gate-driver supply -> gate driver -> power management IC -> semiconductor. Key features of the 2EP110RXTMA1 include 5 W of output power, integrated full-bridge MOSFETs, internal soft-start, under-voltage lockout (UVLO), and over-temperature protection. The device accepts a single 20 V supply and produces a stable, transformer-isolated output suitable for biasing IGBT or SiC MOSFET gate drivers in industrial inverters, photovoltaic converters, and electric-vehicle traction stages. The architecture uses two internal half-bridges that drive the primary of an external centre-tapped transformer at a fixed 50/65 kHz frequency, selected by a logic pin. The secondary is rectified and filtered to produce an isolated rail. Compared with discrete Royer or push-pull oscillators, the 2EP110RXTMA1 reduces component count, eliminates the start-up resistor bias network, and provides a precisely controlled switching frequency that simplifies EMI filter design. Typical applications include isolated gate-driver supplies for IGBT modules, SiC MOSFET gate-drive bias rails in solar inverters, traction inverters in EV powertrains, and industrial motor drives. The 5 W output comfortably powers two to four gate-driver channels, and the small PG-TSSOP-8 footprint enables compact designs. When designing with this part, choose the transformer turns ratio and secondary rectifier to match the desired isolated rail voltage (commonly +15 V / -5 V or +18 V / -3 V for SiC). Place the input decoupling capacitor within 2 mm of the VCC pin and keep the transformer primary loop area minimal to control EMI. This page synthesises distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
2EP130RXTMA1 - Full-Bridge Transformer Driver for SiC/IGBT | Infineon
The Infineon 2EP130RXTMA1 is a full-bridge transformer driver PMIC designed to provide isolated gate-driver supply rails for IGBT and SiC MOSFET power switches, housed in a compact 8-pin PG-TSSOP-8 (exposed pad) package. The device integrates two push-pull output channels that drive a small center-tapped transformer, generating a fully isolated bipolar or unipolar bias for high-side gate drivers. Its supply voltage range of 4.5 V to 20 V and switching frequency range of 50 kHz to 695 kHz make it broadly compatible with low-voltage bus systems including 12 V industrial and 15 V to 18 V battery-fed rails. A transformer driver is a specialized power-management IC that energizes a step-up transformer to produce an isolated DC rail, eliminating the need for opto-couplers or bootstrap circuits in gate-drive bias networks. The 2EP130RXTMA1 belongs to the gate-driver supply sub-category within the broader PMIC family, sitting hierarchically under PMIC > power management IC > semiconductor. It is specifically engineered for high-side gate drive biasing where galvanic isolation is mandated for safety and dv/dt noise immunity. Key features include adjustable duty cycle from 10 % to 50 %, 5 W typical output power into the transformer, soft-start for inrush control, under-voltage lockout (UVLO), short-circuit protection, over-current protection, and over-temperature shutdown. The PG-TSSOP-8 package with exposed thermal pad keeps junction rise modest even at 4.5 V operation, allowing continuous 5 W transfer without external heatsinking. The architecture is a true full-bridge (H-bridge) topology rather than a half-bridge push-pull, which doubles the peak primary voltage swing and enables smaller transformers or higher output power at the same frequency. Internal MOSFETs are synchronized to prevent cross-conduction, and dead-time control protects against shoot-through. According to the Infineon datasheet, the device supports external clock synchronization for paralleled or noise-critical applications. Typical applications include isolated gate-drive supplies for high-voltage IGBT modules in industrial motor drives, SiC MOSFET gate bias in EV traction inverters, photovoltaic string inverters, and isolated auxiliary supplies for telecom and server power-conversion stages. When compared with a discrete charge-pump approach, the 2EP130RXTMA1 delivers higher efficiency and lower EMI in the same PCB area. When designing with this part, the transformer turns ratio must be matched to the desired isolated output voltage, and primary inductance should be selected so that magnetizing current stays below 1 A peak. The exposed pad must be soldered to a copper pour of at least 50 mm² to meet thermal ratings under continuous 5 W operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone.
5962R0051601VPA - 5V Precision Voltage Reference | Analog Devices
The 5962R0051601VPA is a military-grade precision voltage reference from Analog Devices, providing a stable +5V output with an adjustable range of ±6% and minimal effect on temperature stability. It operates over an input voltage range of 7V to 40V, with a low current drain of 1mA, making it ideal for high-reliability systems. The device is packaged in a through-hole ceramic DIP (CDIP) and is qualified to MIL-PRF-38535 Class V, ensuring performance across the full military temperature range of -55°C to +125°C. A voltage reference is a precision electronic circuit that produces a constant output voltage regardless of load, input voltage, or temperature variations. It serves as a foundational building block in analog and mixed-signal systems, providing a stable reference for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and comparators. Voltage references are categorized by their accuracy, temperature coefficient, and long-term stability, and are essential in applications requiring precise voltage regulation. Key features of the 5962R0051601VPA include a nominal output voltage of 5V with a tolerance of ±0.3%, a temperature coefficient of 8.5 ppm/°C maximum, and long-term drift guaranteed at 100 ppm/1000 hours maximum. The device supports single-supply operation from 7V to 40V, and its low quiescent current of 1mA minimizes power consumption. The output can be adjusted over a ±6% range using external resistors, allowing fine calibration without compromising temperature stability. Technically, the 5962R0051601VPA is based on a bandgap reference architecture, which provides a stable voltage derived from the bandgap of silicon. This design offers excellent temperature stability and low noise, making it suitable for precision analog circuits. The device is available in a hermetic ceramic package, ensuring reliability in harsh environments. Its military-grade screening ensures compliance with stringent quality and reliability standards. Typical applications include military avionics, aerospace systems, precision instrumentation, and industrial control systems where a stable and accurate voltage reference is critical. The device is also used in data acquisition systems, medical devices, and communication equipment that require high precision and reliability. When designing with this device, ensure adequate input voltage headroom (at least 2V above the output) and use proper decoupling capacitors on the input and output to maintain stability. The output adjustment pin allows trimming, but care must be taken to maintain the temperature coefficient. For best performance, use precision resistors with low temperature coefficients in the adjustment network.
A1084-A - 5A Low-Dropout Positive Voltage Regulator | AiT Semiconductor
The AiT Semiconductor A1084-A is a 5A low-dropout positive voltage regulator in a TO-252 (DPAK) surface-mount package, designed for applications requiring high-current linear regulation with minimal input-to-output voltage drop. Per the AiT datasheet, the A1084 family delivers up to 5A of output current with a typical dropout of 1.4V at full load, fixed/adjustable output versions, and integrated thermal-shutdown plus current-limit protection. A low-dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the output voltage. Within the broader taxonomy, LDOs belong to the linear regulator family, which itself is a sub-category of voltage regulators under the power management IC umbrella. Unlike switching regulators, LDOs trade efficiency for simplicity and ultra-low output noise because they dissipate the difference between VIN and VOUT as heat rather than switching it. Key features of the A1084-A include a maximum input voltage of 7V (typical operation), built-in thermal overload protection, on-chip current limiting that prevents catastrophic failure under short-circuit conditions, and an adjustable output version that supports VREF = 1.25V. The bipolar architecture used in the AiT A1084 is similar in topology to the legacy National Semiconductor LM1084, sharing the same TO-220 / TO-252 footprint and pinout conventions for true drop-in compatibility. From an applications perspective, the A1084-A is well suited for high-current post-regulation after a switching converter, where its low noise floor preserves signal integrity. Designers typically pair it with bulk input capacitance of 10uF or larger and a tantalum output capacitor of 10uF minimum to maintain loop stability, mirroring the LM1084 reference design from National Semiconductor. When designing with this part, pay close attention to thermal management. At VIN=5V, VOUT=3.3V, and 5A load, the A1084-A dissipates approximately 8.5W of power, which requires substantial copper area or a heatsink on the DPAK tab. Exceeding the junction temperature limit will trigger the thermal-shutdown circuit embedded in the die. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
A4402ELPTR-T - Dual Buck + LDO PMIC, 2MHz, 16-TSSOP-EP | Allegro
The Allegro MicroSystems A4402ELPTR-T is a dual-output regulator that combines a constant on-time buck converter and a linear regulator (LDO) in a single 16-pin TSSOP package with exposed thermal pad, switching at up to 2 MHz. The buck channel and LDO channel each have independent adjustable output voltages, making the part a compact solution for microcontroller- or DSP-based systems that require separate core and I/O voltage rails from a single input. What is a PMIC with integrated buck and LDO? A PMIC (Power Management Integrated Circuit) consolidates multiple voltage regulators into one IC; a buck (step-down switching) regulator efficiently converts a higher DC input to a lower DC output using an LC filter and PWM/COT control, while an LDO (Low-Dropout linear regulator) uses a series pass element to clean up switching ripple into a low-noise rail. Together they form a hierarchical power tree: PMIC -> multi-channel regulator -> buck + LDO co-pack -> embedded power management IC. Key features of the A4402ELPTR-T include a wide VIN range, an integrated high-side MOSFET in the buck stage, internal frequency compensation, soft-start, and thermal shutdown. The exposed thermal pad (eTSSOP-EP) keeps junction-to-ambient thermal resistance low enough for compact PCB layouts, and the LDO post-regulation stage delivers a low-noise rail suitable for analog or RF sections fed from the buck output. Typical applications include camera modules, sensor hubs, microcontroller core + I/O rails, point-of-sale terminals, and embedded industrial controllers. The 2 MHz switching frequency enables small external L/C footprints, while the adjustable buck output combined with the LDO allows a designer to optimize efficiency and noise trade-offs in mixed-signal systems. Design tip: stagger the buck and LDO start-up using the part's soft-start behavior so the downstream microcontroller sees a monotonic core rail before peripheral I/O, avoiding latch-up. Use the exposed pad as the primary heat-dissipation path and place input/output capacitors as close to the IC as routing allows. This page synthesizes distributor pricing across DigiKey, Mouser, LCSC and Octopart, lists drop-in and same-brand variants, and adds practical design notes beyond the manufacturer datasheet to help engineers pick the right Allegro A4402 part for their power tree.
A81415 - ASIL-D Automotive PMIC with Wheel-Speed Interface | Allegro
The Allegro MicroSystems A81415 is an automotive ASIL-D power management IC (PMIC) that integrates a buck-boost pre-regulator, five LDO linear regulators, and a one-channel multi-protocol wheel-speed sensor interface, optimized for electromechanical braking (EMB) applications in brake-by-wire systems. A power management IC (PMIC) is a highly integrated semiconductor that manages power conversion, sequencing, and monitoring within an electronic system, combining multiple regulators and supervisory functions on a single die. Within the power-management hierarchy, a PMIC sits above individual voltage regulators, coordinating multiple rails for a host processor or safety controller. The A81415 extends the classic functional-safety PMIC concept by also embedding sensor signal conditioning, positioning it as a single-chip solution at the system level. Key features include ASIL-D functional safety capability per automotive safety standards, an integrated buck-boost pre-regulator that maintains regulation across wide battery voltage excursions such as cold crank and load dump, five independent LDOs for powering microcontrollers, gate drivers, and sensors, and a wheel-speed sensor interface that decodes any sensor protocol without external components. According to Allegro MicroSystems, the A81415 provides a single-chip solution that integrates power, safety, and decoding for the wheel-speed sensor interface, reducing system cost, improving functional safety coverage, and simplifying electronic braking corner modules. The device is qualified to AEC-Q100 Grade 0, supporting the extreme ambient temperatures found in wheel-end and brake-actuator environments. Typical applications include electromechanical braking (EMB) corner modules, brake-by-wire systems in software-defined vehicles, wheel-end power supplies for braking electronic control units, and electric powertrain chassis domains requiring ASIL-D power architecture. The integration delivers up to an estimated $4 per-vehicle BOM savings and frees approximately 50% more board space compared with discrete implementations, per Allegro's July 2026 launch announcement. Design considerations include careful partitioning of the five LDO rails to match microcontroller sequencing requirements, and validation of the buck-boost pre-regulator behavior across the full automotive battery voltage profile. Pricing and detailed electrical specifications should be confirmed against the official Allegro datasheet, as distributor stock is limited for this newly released part. This page synthesizes manufacturer product data, launch information, and practical guidance not consolidated in the manufacturer datasheet, including alternative-sourcing analysis and design notes for brake-by-wire power architectures.
A8603KESTR-R - 4-Output Automotive LCD Bias PMIC | Allegro
The Allegro MicroSystems A8603KESTR-R is a fixed-frequency, multi-output LCD bias supply IC designed for automotive display panels, integrating an internal boost converter, two LDOs, and two charge-pump outputs in a 24-pin QFN-EP (4x4 mm) thermally-enhanced package with side-wall plating. According to the Allegro datasheet, the device accepts a 3 V to 10 V automotive battery input, supports switching frequencies from 350 kHz to 2.25 MHz (programmable or synchronizable to an external clock), and includes I2C control for output-voltage programming, fault reporting, and sequencing. The four programmable outputs (one positive boost + one positive LDO + one negative charge pump + one positive charge pump, or comparable configurations) provide the AVDD, VGH, VGL, and VCOM rails required by TFT-LCD panels, simplifying the bill of materials versus discrete bias trees. AEC-Q100 qualification and a wide -40 °C to +125 °C operating range suit the part for instrument clusters, center-stack displays, head-up displays, and rear-seat entertainment modules. Low quiescent current extends battery life in always-on or standby modes, and an internal I2C address lets multiple A8603 instances coexist on a single bus when larger or stacked displays require parallel bias channels. Synchronization to an external oscillator avoids beat-frequency interference with AM/FM radio bands, an automotive EMC consideration.
AD580UH/883B - 2.5V Precision Voltage Reference | Analog Devices
The AD580UH/883B is a three-terminal, low cost, temperature compensated, bandgap voltage reference from Analog Devices. It provides a fixed 2.5 V output for input voltages between 4.5 V and 30 V. Housed in a hermetic TO-52-3 metal can package, this device is designed for high-reliability applications, including military and aerospace systems, and is compliant with MIL-STD-883 Class B standards. The AD580UH/883B offers excellent temperature stability of 10 ppm/°C and a tight output tolerance of ±0.4%, ensuring precise voltage regulation over a wide operating temperature range of -55°C to +125°C. A voltage reference is a precision electronic circuit that produces a constant output voltage regardless of load current, input voltage, or temperature variations. It serves as a stable benchmark for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other precision analog circuits. Voltage references are fundamental building blocks in power management and signal conditioning, providing the accuracy required for high-resolution data conversion and measurement systems. The AD580UH/883B belongs to the family of series voltage references, which regulate output voltage by adjusting a series pass element, offering low output impedance and stable operation. Key features of the AD580UH/883B include its laser-trimmed thin-film resistors, which achieve high initial accuracy of ±0.4%, and its excellent long-term stability of 25 V/month. The device operates with a low quiescent current, making it suitable for battery-powered and power-sensitive applications. Its wide input voltage range of 4.5 V to 30 V allows flexibility in various supply configurations, including operation from 5 V logic supplies. The TO-52-3 hermetic package ensures protection against moisture and environmental contaminants, enhancing reliability in harsh conditions. Technically, the AD580UH/883B utilizes a bandgap reference architecture, which generates a stable voltage based on the bandgap energy of silicon. This design provides a temperature-compensated output that is largely independent of supply voltage variations. The device is laser-trimmed during manufacturing to achieve precise output voltage and temperature coefficient, ensuring consistent performance across production batches. The AD580UH/883B is recommended as a stable reference for all 8-, 10-, and 12-bit D/A converters that require an external reference, and its wide input range makes it ideal for digital panel meters and single-supply logic systems. Typical applications include precision data acquisition systems, industrial process control, medical instrumentation, and military avionics. The AD580UH/883B is particularly suited for high-reliability environments where consistent voltage reference is critical. Its hermetic package and MIL-STD-883 compliance make it a preferred choice for defense and aerospace applications. When designing with the AD580UH/883B, ensure adequate decoupling capacitors on the input and output to maintain stability. The device's low output impedance allows direct connection to ADC reference inputs, but proper layout practices should be followed to minimize noise pickup.
AD584TH - Pin Programmable Precision Voltage Reference | Analog Devices
The AD584TH is an 8-terminal precision voltage reference from Analog Devices that offers pin-programmable selection of four popular output voltages: 10.000 V, 7.500 V, 5.000 V, and 2.500 V. This through-hole device comes in a TO-99-8 metal can package, providing excellent thermal stability and long-term drift performance. The AD584TH is designed for high-precision applications where a stable, accurate voltage reference is critical. A voltage reference is an electronic component that produces a constant output voltage regardless of load, temperature, or supply variations. It serves as a benchmark for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other measurement systems. Voltage references are a subset of power management ICs, specifically within the analog signal chain, ensuring accuracy and stability in precision circuits. Key features of the AD584TH include a programmable output voltage (2.5V, 5V, 7.5V, or 10V) with an initial accuracy of ±0.14% (for the TH grade), a 10 mA output current capability, and a wide operating temperature range. The device also offers low temperature coefficient and excellent line and load regulation, making it suitable for demanding industrial and instrumentation applications. Technically, the AD584 uses a bandgap reference architecture combined with an output amplifier to provide a low-impedance, buffered output. The pin-programmable feature allows the user to select the desired output voltage without external resistors, simplifying design and reducing component count. The TO-99-8 package provides a hermetic seal, enhancing reliability in harsh environments. Typical applications include precision data acquisition systems, digital voltmeters, calibration equipment, and as a reference for 8- to 12-bit ADCs and DACs. The AD584TH is also used in power supply monitoring and battery management systems where a stable reference is required. When designing with the AD584TH, ensure adequate decoupling on the input and output pins to maintain stability. The output can drive up to 10 mA, but for higher current loads, an external buffer may be necessary. The device is available in tape and reel packaging for automated assembly.
AD588SQ/883B - High Precision Dual Tracking Reference | Analog Devices
The AD588SQ/883B is a high precision, multiple output, dual tracking voltage reference from Analog Devices, designed for military and aerospace applications. It provides pin-programmable outputs of ±5V and ±10V with a maximum output current of 10 mA. The device features a buried Zener reference cell, ensuring low drift of 1.5 ppm/°C and low initial error of 1 mV. Housed in a 16-pin CERDIP package, it is MIL-STD-883 compliant, making it suitable for high-reliability environments. A voltage reference is a precision device that produces a constant voltage output regardless of load, temperature, or supply variations. It serves as a stable benchmark for analog-to-digital converters, digital-to-analog converters, and other measurement systems. The AD588 belongs to the family of precision voltage references, which are essential components in data acquisition and instrumentation systems. Key features include low drift, low initial error, pin-programmable output ranges, flexible output force and sense terminals, and high impedance ground sense. These features enable accurate and stable voltage references in demanding applications. The device also offers excellent line and load regulation, ensuring consistent performance across varying conditions. The AD588 includes the basic reference cell and three additional amplifiers that provide pin programmable output ranges. The amplifiers are laser trimmed for low offset and low drift to maintain the accuracy of the reference. This architecture allows for flexible configuration and high precision, making it ideal for calibration and measurement equipment. Typical applications include precision data acquisition systems, automatic test equipment, and military avionics. The device's high accuracy and stability make it suitable for use in ADCs and DACs where reference voltage accuracy directly impacts conversion accuracy. Its MIL-STD-883 compliance ensures reliability in harsh environments. When designing with the AD588, consider the need for proper decoupling and grounding to minimize noise. The force and sense terminals allow for remote sensing to compensate for voltage drops in long traces, ensuring accurate output at the load.
AD588TE/883B - 5V/10V Precision Voltage Reference | Analog Devices
The AD588TE/883B is a high-precision, dual-output, programmable voltage reference from Analog Devices, packaged in a 20-lead ceramic leadless chip carrier (CLCC). It provides 5V and 10V outputs with 12-bit absolute accuracy without user adjustments, making it ideal for precision analog systems. The device operates over the full military/aerospace temperature range of -55°C to +125°C and is specified for high-reliability applications. A voltage reference is a precision circuit that produces a constant output voltage regardless of load, supply variations, or temperature. It is a fundamental building block in analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and precision power supplies, where a stable reference voltage is critical for accurate conversion. The AD588 belongs to the series voltage reference family, which uses a bandgap or buried-zener architecture to achieve low drift and high accuracy. Key features of the AD588TE/883B include dual outputs of 5V and 10V, a maximum supply current of 10 mA, and a voltage tolerance of 0.1%. The device offers optional fine-trim connections for applications requiring higher precision, and it is available in a ceramic package suitable for military and aerospace environments. The AD588TE/883B is a military-grade variant, with the /883B suffix indicating compliance with MIL-STD-883 screening. Technically, the AD588 uses a buried-zener reference with laser-trimmed thin-film resistors to achieve low temperature drift and high initial accuracy. The dual outputs are independently buffered, allowing simultaneous use of 5V and 10V references. The device operates from a supply voltage of up to 36V, and its output can be adjusted using external resistors. The ceramic CLCC package provides excellent thermal stability and hermetic sealing, essential for harsh environments. Typical applications include precision data acquisition systems, avionics, military electronics, and industrial instrumentation. The AD588TE/883B is particularly suited for systems requiring a stable reference over a wide temperature range, such as aerospace guidance systems and high-end test equipment. When designing with the AD588TE/883B, ensure adequate decoupling on the supply pins and consider the thermal performance of the ceramic package. The fine-trim pins allow for calibration to achieve better than 0.1% accuracy, but they should be used with precision resistors to avoid introducing drift.
AD588TQ/883 - High Precision Voltage Reference | Analog Devices
The AD588TQ/883 is a high precision, programmable voltage reference from Analog Devices, offering 12-bit absolute accuracy without user adjustments. It provides adjustable outputs of 5V and 10V with a maximum output current of 10 mA. The device is packaged in a 16-lead CERDIP (CDIP) package and is specified for the full military/aerospace temperature range, making it suitable for demanding applications. A voltage reference is a precision electronic circuit that produces a constant output voltage regardless of load, temperature, or supply variations. It is a fundamental building block in analog and mixed-signal systems, serving as a stable reference for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and comparators. Voltage references are categorized into series and shunt types; the AD588 is a series reference, which offers lower power consumption and better accuracy than shunt references. Key features of the AD588TQ/883 include 12-bit absolute accuracy, low temperature coefficient of 3 ppm/°C, and optional fine-trim connections for higher precision. The device operates over a wide supply range and provides both 5V and 10V outputs, which can be programmed via pin strapping. The military-grade temperature range ensures reliable operation in harsh environments. The AD588 uses a buried Zener diode reference and precision thin-film resistors to achieve its high accuracy. The architecture provides excellent long-term stability and low noise, making it ideal for precision instrumentation and data acquisition systems. The fine-trim capability allows users to adjust the output voltage to meet specific accuracy requirements. Typical applications include precision data acquisition systems, calibration equipment, and aerospace instrumentation. The AD588TQ/883 is also used in military and aerospace systems where high reliability and accuracy are critical. Its 16-lead CERDIP package provides hermetic sealing, protecting the die from moisture and contaminants. When designing with the AD588TQ/883, ensure proper decoupling on the input supply and output to maintain stability. The fine-trim pins can be used to adjust output voltage, but care must be taken to avoid introducing noise. The device is available in tube packaging, and pricing is available from authorized distributors.
AD589SH/883B - 1.2V Bandgap Voltage Reference | Analog Devices
The AD589SH/883B is a two-terminal, temperature-compensated bandgap voltage reference from Analog Devices, providing a fixed 1.23V output voltage for input currents between 50µA and 5.0mA. Housed in a hermetic metal can package (TO-52 style), this MIL-STD-883B compliant device is designed for precision applications requiring high stability over a wide temperature range of -55°C to +125°C. With a low temperature coefficient of 10ppm/°C (max for AD589M grade) and low output impedance of 0.6Ω, it serves as a superior replacement for other 1.2V references. A bandgap voltage reference is a type of voltage reference that produces a stable output voltage based on the bandgap energy of silicon, approximately 1.2V. It is a fundamental building block in analog and mixed-signal systems, providing a precise reference voltage for ADCs, DACs, comparators, and power supply monitoring circuits. Bandgap references are preferred over Zener-based references for their lower temperature drift and lower power consumption, making them ideal for battery-powered and precision measurement equipment. Key features of the AD589SH/883B include its wide operating current range from 50µA to 5mA, allowing flexible biasing in various circuit topologies. The device operates with a total supply current of 50µA, consuming only 60µW of power, which is critical for low-power designs. The low temperature coefficient of 10ppm/°C ensures minimal output voltage variation across temperature, essential for high-accuracy applications. The two-terminal Zener operation simplifies circuit design, requiring only a single resistor to set the bias current. Technically, the AD589 utilizes Analog Devices' precision bipolar processing and thin-film technology to achieve excellent matching and thermal tracking of on-chip components. This results in high stability and low noise, making it suitable for precision analog systems. The device is available in a hermetic metal can package, which provides excellent environmental protection and reliability, particularly for military and aerospace applications. Typical applications include precision voltage references for data converters, portable instrumentation, and industrial process control. The AD589SH/883B is also used in power supply monitoring and calibration equipment where a stable, accurate reference is required. Its wide operating temperature range and MIL-STD-883B compliance make it suitable for harsh environments. When designing with this device, ensure the bias current is set within the specified range (50µA to 5mA) using an appropriate resistor. The output voltage is nominally 1.23V, but can vary between 1.2V and 1.25V depending on grade. For optimal performance, use a stable bias current and consider the thermal effects on the reference voltage.
AD694ARZ-REEL - 4-20mA Current Loop Transmitter, 16-SOIC | ADI
The Analog Devices AD694ARZ-REEL is a monolithic 4-20 mA current-loop transmitter that accepts a high-level voltage input and drives a standard industrial current loop for valves, actuators, and process-control field devices. Housed in a 16-pin SOIC (Wide Body) package supplied on a 13-inch reel, it operates from a single +4.5 V to +36 V supply, draws a quiescent current of approximately 1.5 mA, and provides a precision on-chip reference of 2 V or 10 V for the user's input scaling network. In industrial process control, a current transmitter (also called a V/I converter or 4-20 mA loop driver) sits between a low-level analog control output - typically from a DAC, PLC analog module, or microcontroller PWM/filtered output - and a field-mounted actuator. The 4-20 mA current loop has been the dominant analog signaling standard since the 1950s because it is intrinsically safe, immune to ground-loop voltage drops over long cable runs, and tolerates conductor resistance while still resolving a 0-100% process variable to about 0.4% per microamp. The AD694 belongs to the analog front-end / signal-conditioning family within industrial ICs and integrates the input buffer, reference, loop driver, and several feature pins (4 mA Adjust, 4 mA On/Off) that previously required multiple discrete op-amps and a pass transistor. Key features include programmable input ranges (0-2 V or 0-10 V default with external resistor scaling), a 0-20 mA mode selectable by raising pin 9 above 3 V, laser-trimmed input offset typically 50 uV and a 4-20 mA output span accuracy of 0.4% to 0.7% at room temperature (depending on version). The integrated 2 V/10 V reference feeds a single op-amp inside the device so the user only needs one scaling resistor. Its wide 4.5 V to 36 V supply range, with a typical loop headroom of 2 V, allows it to power a 20 mA load directly off a 24 V industrial rail without an external booster. The AD694 is built on Analog Devices' bipolar process with laser-trimmed thin-film resistors. A single-chip architecture replaces a typical discrete V/I design that would require a precision op-amp (e.g. OP-07), a 0.5 W pass transistor, a 1.2 V bandgap reference, and a pair of 0.1% scaling resistors. By integrating the loop driver, the AD694 eliminates drift caused by thermal coupling between discrete pass transistors and sense resistors, and saves roughly 200 mm² of PCB area. Typical applications include PLC analog output modules driving proportional valves, smart-transmitter analog front ends, variable-frequency drive (VFD) reference inputs, SCADA remote-terminal-unit (RTU) 4-20 mA outputs, and HART-compatible analog output stages. In valve control, a 4-20 mA signal modulates a pneumatic or hydraulic positioner; in flow meters, it transmits the primary variable to a chart recorder; in factory automation, it links motor-speed commands to variable-frequency drives. When designing with this device, observe the loop-supply headroom: total V+ supply must be at least V_load_max + 2 V. The 4 mA offset trim is sensitive to ground noise; route the 4 mA adjust node as a guard trace tied to ground at one point only. Avoid placing digital-switching nodes within 10 mm of the loop output to preserve the 0.4% accuracy. This page synthesizes DigiKey distributor pricing, parametric cross-references, and practical industrial design notes not found in the standalone manufacturer datasheet.
AD780ARZ - 2.5V/3.0V High Precision Reference | Analog Devices
The AD780ARZ from Analog Devices is a high precision bandgap voltage reference that provides a programmable output of either 2.5 V or 3.0 V from input voltages between 4 V and 36 V. Housed in an 8-lead SOIC package, this series and shunt reference delivers up to 10 mA output current with excellent accuracy of ±0.2% (A grade) and ±0.17% (B grade). Its ultra-low noise of typically 4 µV p-p (0.1 Hz to 10 Hz) and wideband spectral noise density of 100 nV/√Hz make it ideal for precision data acquisition and instrumentation. A voltage reference is a crucial building block in analog and mixed-signal systems, providing a stable and accurate voltage against which other voltages are measured or regulated. The AD780 belongs to the family of precision voltage references, which are essential for ADCs, DACs, and comparators to achieve high resolution and accuracy. As a bandgap reference, it leverages the predictable temperature behavior of a silicon bandgap to produce a stable output, offering a cost-effective alternative to buried Zener references while maintaining high performance. Key features of the AD780ARZ include a temperature output pin that allows the device to function as a temperature transducer, a trim pin for fine-tuning output voltage, and low quiescent current that increases by only 2 µA/V above 5 V input. The device operates over a wide temperature range of -40°C to +85°C and is available in both SOIC-8 and DIP-8 packages. Its long-term stability is specified as noncumulative, with drift in subsequent 1000-hour periods significantly lower than the first. The AD780 uses a proprietary bandgap architecture that achieves low noise and high stability without the need for external components. The output can be programmed to 2.5 V or 3.0 V via a logic pin, providing flexibility in system design. The device also features a force and sense configuration for high-accuracy remote sensing, minimizing errors due to trace resistance. Typical applications include precision data acquisition systems, high-resolution ADCs and DACs, digital voltmeters, and industrial process control. Its low noise and high accuracy make it suitable for medical instrumentation and aerospace test equipment. The AD780 is a pin-compatible performance upgrade for the LT1019(A)-2.5 and the AD680, simplifying upgrades in existing designs. When designing with the AD780, ensure proper decoupling with a 0.1 µF capacitor close to the VIN pin and a 1 µF capacitor on the output to maintain stability. The trim pin can be used to adjust the output voltage by ±0.5% to meet tight system requirements. For best noise performance, use the optional external noise reduction capacitors as described in the datasheet.
AD780BRZ - 2.5V/3.0V High Precision Reference | Analog Devices
The AD780BRZ from Analog Devices is a high precision, low noise, programmable voltage reference that provides a stable 2.5 V or 3.0 V output. It is available in an 8-lead SOIC package and operates over a wide input voltage range of 4 V to 36 V. The device features ultralow drift of 3 ppm/°C maximum, high accuracy of ±1 mV maximum, and low noise of 100 nV/√Hz, making it suitable for precision data acquisition and instrumentation applications. A voltage reference is a crucial building block in analog and mixed-signal systems, providing a stable and accurate voltage for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and comparators. The AD780 belongs to the family of series and shunt voltage references, which can be configured for either mode. It is a programmable reference, allowing the user to select between 2.5 V and 3.0 V outputs via a pin. This flexibility makes it a versatile choice for various system voltage requirements. Key features of the AD780BRZ include pin-programmable 3.0 V output, ultralow drift of 3 ppm/°C max, high accuracy of ±1 mV max, low noise of 100 nV/√Hz, and low quiescent current of 1 mA max. The device also offers noise reduction capability, allowing external capacitors to further reduce noise. The temperature output pin enables the AD780 to be configured as a temperature transducer while providing a stable reference voltage. Technically, the AD780 uses a bandgap reference architecture, which provides a stable voltage that is relatively independent of temperature and supply variations. The device is designed for high precision, with a temperature coefficient as low as 3 ppm/°C, ensuring minimal voltage drift over temperature. The wide input voltage range of 4 V to 36 V allows operation from various supply rails, including 5 V, 12 V, and 24 V systems. The low quiescent current of 1 mA max makes it suitable for battery-powered applications. Typical applications for the AD780BRZ include precision data acquisition systems, industrial process control, medical instrumentation, and portable test equipment. Its high accuracy and low noise make it ideal for use as a reference for high-resolution ADCs and DACs. The device is also used in power supply monitoring and calibration equipment. When designing with the AD780BRZ, it is important to ensure proper decoupling and layout to achieve the specified performance. The noise reduction pin can be used with an external capacitor to further reduce output noise. The temperature output pin can be utilized for temperature sensing applications, but care must be taken to avoid loading the reference output.
AD780BRZ-REEL7 - 2.5V/3.0V High Precision Reference | Analog Devices
The AD780BRZ-REEL7 from Analog Devices is a high precision, programmable voltage reference that provides a stable 2.5V or 3.0V output with exceptional accuracy and low noise. Housed in an 8-pin SOIC package, this device is designed for demanding applications where voltage stability is critical. It can source or sink up to 10 mA and operates in both series and shunt modes, allowing flexible positive or negative output configurations without external components. A voltage reference is a precision electronic circuit that produces a constant output voltage regardless of load, temperature, or supply variations. It serves as a fundamental building block in analog and mixed-signal systems, providing a stable reference for ADCs, DACs, and comparators. Voltage references are categorized into series and shunt types, with the AD780 supporting both, making it a versatile choice for a wide range of applications. Key features of the AD780BRZ-REEL7 include a temperature coefficient of 3 ppm/°C, initial accuracy of ±0.04% for 2.5V and ±0.03% for 3.0V, and extremely low noise of 4 µV p-p from 0.1 Hz to 10 Hz. The device also features a temperature output pin that varies linearly with temperature, enabling it to function as a temperature transducer while providing a stable reference. The AD780 is stable under all load conditions when a 1 µF capacitor is used, eliminating concerns about instability. Technically, the AD780 utilizes a bandgap reference architecture, which provides excellent temperature stability and low noise. The device operates over a wide supply range of 4V to 36V, making it suitable for both low-voltage and high-voltage systems. Its low dropout voltage and high output current capability allow it to drive heavy loads while maintaining precision. The AD780 is a pin-compatible performance upgrade for the LT1019(A)-2.5 and AD680, offering improved specifications and reliability. Typical applications include precision data acquisition systems, high-resolution ADCs and DACs, industrial process control, and test and measurement equipment. The AD780's low noise and high accuracy make it ideal for use in medical instrumentation, where precise voltage references are essential for accurate measurements. Its ability to operate in shunt mode also makes it suitable for negative reference generation in bipolar ADC applications. When designing with the AD780, it is important to place a 1 µF capacitor at the output to ensure stability under all load conditions. Additionally, proper PCB layout with short, low-inductance traces to the output capacitor will minimize noise and improve performance. The temperature output pin can be used for temperature sensing, but care should be taken to avoid loading it excessively, as this may affect reference accuracy.
AD8212S - High Voltage Current Shunt Monitor | Analog Devices
The AD8212S is a high common-mode voltage, current shunt monitor from Analog Devices. It accurately amplifies a small differential input voltage in the presence of large common-mode voltages up to 65 V, and can operate at common-mode voltages greater than 500 V with the addition of an external PNP transistor. The device outputs a current proportional to the differential input voltage, making it ideal for current monitoring across a shunt resistor in applications controlling loads such as motors and solenoids. A current shunt monitor is a specialized amplifier that measures the voltage drop across a sense resistor placed in series with a load, converting this small differential voltage into a proportional output signal. In high-side sensing, the monitor must reject the large common-mode voltage present at the shunt, which can be tens or hundreds of volts above ground. The AD8212S excels in this role, providing accurate current measurement without requiring level shifting or isolation, simplifying the design of motor control, solenoid control, and power management systems. Key features of the AD8212S include a wide common-mode input range of 4.5 V to 65 V (extendable beyond 500 V with an external PNP), a current output that simplifies interfacing with ADCs or comparators, and a wide operating temperature range of -40°C to +125°C. The device operates from a single 5 V supply and draws a low quiescent current, making it suitable for automotive and industrial environments. Its high common-mode rejection ensures accurate current sensing even in noisy power systems. The AD8212S uses a precision bipolar process to achieve low offset and gain drift over temperature. The current output can be converted to a voltage with an external resistor, allowing flexible scaling. The device is available in a compact SOIC-8 package, which is pin-compatible with the standard AD8212, and is specified for operation over the extended temperature range, making it suitable for harsh environments. Typical applications include high-side current sensing in motor control, solenoid control, battery monitoring, and power supply monitoring. The device is also used in automotive systems for load detection and diagnostics. Its ability to handle high common-mode voltages with minimal external components makes it a preferred choice for robust current sensing. When designing with the AD8212S, ensure the supply voltage is within the specified range and the output resistor is chosen to keep the output voltage within the ADC's input range. The external PNP transistor, if used, must be selected to handle the required common-mode voltage and current.
ADIN1300BCPZ-R7 - Gigabit Ethernet PHY, 10/100/1000 Mbps, 40-LFCSP | Analog Devices
The Analog Devices ADIN1300BCPZ-R7 is a low-power, single-port Gigabit Ethernet transceiver (PHY) supporting 10 Mbps, 100 Mbps, and 1 Gbps data rates in a 40-pin LFCSP-WQ (6x6 mm) package with wettable flanks. It delivers best-in-class latency under 290 ns (100 Mbps) and sub-400 ns (1000 Mbps) while consuming only 257 mW typical at 1 Gbps full duplex, designed specifically for industrial Ethernet, EtherCAT, PROFINET, and TSN applications. The device integrates an Energy Efficient Ethernet (EEE) physical layer, 802.3az support, automatic MDI/MDIX crossover, and on-chip termination resistors. An Ethernet PHY (physical layer transceiver) is the analog front-end in a layered network stack that converts between digital MAC-domain data and the differential analog signals on the twisted-pair cable. It sits below the MAC layer in the OSI model, handling line coding (PAM/PMA), link training, baseline wander correction, and signal equalization. Industrial PHYs such as the ADIN1300 are hardened against ESD, EMC, and temperature extremes, and they support deterministic latency demanded by real-time motion-control protocols. Key features of the ADIN1300 include 4 kV HBM ESD rating on MDI pins, integrated 1.25V LDO regulators, programmable RGMII/GMII/MII MAC interface, IEEE 1588 time-stamping support, and a configurable MDIO/MDC management interface. The 40-LFCSP-WQ package provides excellent thermal performance for fanless industrial designs and supports reflow soldering with its wettable flank terminations that enable automated optical inspection (AOI). The ADIN1300 uses a DSP-based echo canceller and baseline-wander correction loop, enabling robust 1000BASE-T operation over 100 m of CAT5e/6 cable even in electrically noisy industrial cabinets. The integrated PHY reduces BOM count versus MAC-plus-discrete-PHY designs and includes diagnostic features such as cable diagnostics, signal quality indicator (SQI), and loopback modes for factory test. Typical applications include industrial Ethernet switches, PLC communication modules, EtherCAT slave nodes, motion controllers, building automation gateways, and embedded IoT gateways requiring deterministic real-time networking. The wide -40C to +85C industrial temperature range supports outdoor and factory-floor deployment without additional thermal management. When designing with this device, ensure the MAC interface voltage matches the RGMII/GMII/MII logic level (1.8V, 2.5V, or 3.3V selectable via strapping resistors). Place the 25 MHz reference clock or crystal within 1 cm of the XI/XO pins to minimize jitter, and provide an isolated RJ45 magnetics module rated for 1 Gbps operation. Decouple each AVDD/DVDD pin with 100 nF plus 10 uF bulk capacitors to control power-supply noise coupling into the analog front-end. This page synthesizes distributor pricing, drop-in alternatives, and application guidance not consolidated on the manufacturer datasheet - useful for engineers sourcing the ADIN1300BCPZ-R7 for new designs or second-source qualification.
ADP1048ARQZ-R7 - Digital PFC Controller, 400kHz, 24-QSOP | ADI
The Analog Devices ADP1048ARQZ-R7 is a digital power factor correction (PFC) controller with accurate AC power metering and inrush current control, housed in a 24-lead QSOP package. The device is specifically designed for interleaved and bridgeless PFC topologies in ac/dc systems, supporting switching frequencies from 30 kHz to 400 kHz with average current mode control. A Power Factor Correction controller is a specialized power management IC that shapes the input current drawn from the AC mains to be in phase with the input voltage, thereby maximizing the ratio of real power to apparent power. PFC controllers sit at the front end of ac/dc converters, between the input rectifier bridge and the bulk capacitor, and they form the first stage of the power supply hierarchy: PFC stage -> DC-DC converter -> point-of-load regulators -> powered loads. By maintaining a high power factor (typically > 0.99), PFC controllers reduce harmonic distortion, help systems meet regulatory standards such as IEC 61000-3-2, and improve overall energy efficiency in servers, telecom rectifiers, and industrial power supplies. Key features of the ADP1048ARQZ-R7 include programmable switching frequency up to 400 kHz, accurate AC power metering capability via an integrated digital engine, inrush current control to limit stress on the bulk capacitor during AC plug-in events, and a digital interface for parameter adjustment. The 24-lead QSOP package offers a compact footprint and supports surface-mount assembly with reflow soldering compatible with standard lead-free profiles. The digital PFC core implements a conventional boost topology with average current mode control, providing stable operation across a wide line and load range. The architecture combines a high-performance analog front end for current and voltage sensing with a digital controller that closes the PFC loop via a programmable algorithm. This digital approach enables per-design tuning without external component changes, simplifies BOM consolidation across product variants, and provides telemetry for input power, RMS current, RMS voltage, and power factor that the system host can read back through the I2C/PMBus-compatible interface. The ADP1048 is the interleaved/bridgeless sibling of the ADP1047, which targets single-phase PFC stages. Typical applications include high-efficiency ac/dc power supplies for servers and networking equipment, telecom rectifiers complying with 80 PLUS and ENERGY STAR programs, industrial SMPS front ends, UPS battery chargers, and interleaved/bridgeless PFC stages for 1 kW to 5 kW power ranges. When designing with the ADP1048ARQZ-R7, ensure the I2C address is correctly configured in the EEPROM and that the sense resistor in the inductor return path has sufficient bandwidth for the programmed switching frequency to maintain stable average-current control.
ADP225ACPZ - Dual 300mA Adj LDO, Low Noise, High PSRR | ADI
The Analog Devices ADP225ACPZ is a dual-channel, 300 mA adjustable-output, low-dropout (LDO) linear regulator in an 8-lead LFCSP-UD (2 mm × 2 mm) package. Each output rail can be set from 0.5 V to 5.0 V, and the part accepts input voltages from 2.5 V to 5.5 V with a typical dropout of 170 mV at 300 mA load. An LDO (low-dropout) linear regulator is a class of voltage regulator whose category (LM-IC) maintains a stable, accurate rail even when VIN approaches VLOOOW - i.e. the regulator continues to regulate with only a few hundred millivolts of headroom. In the broader power-tree hierarchy, an LDO sits downstream of switching DC-DC converters (which provide bulk step-down) and upstream of noise-sensitive loads; LDOs trade efficiency for clean output because no switching noise reaches the load. Key features include high power-supply rejection ratio (PSRR) for downstream ripple attenuation, low output noise suitable for RF and audio rails, integrated quick-output discharge (QOD) transistors that actively pull each output to ground when disabled, and stable operation with only 1 µF, ±30% ceramic output capacitors. The two channels are independently enabled and share a common input. The ADP225ACPZ is fabricated on a BiCMOS process that combines CMOS control logic with bipolar pass elements, achieving both low quiescent current and excellent transient response. The QOD MOSFETs prevent output voltage drift into the disabled state, which is critical for power-sequenced loads such as RF transceivers, FPGAs, and image sensors. Typical applications include portable and battery-powered devices (smartphones, wearables, tablets), wireless handsets and RF transceivers, image sensor and camera-module rails, FPGA/ASIC I/O and core supplies in low-voltage domains, and any space-constrained board that needs two clean rails from a single small package. When designing with this part, ensure the input supply has sufficient bulk capacitance to handle the simultaneous turn-on of both outputs and that the 1 µF minimum output capacitance requirement is met across temperature and DC bias. The exposed pad must be soldered to a sufficient copper pour for thermal dissipation.
ADP3169JRU-REEL - 2/3-Phase VRM Controller | Analog Devices
The Analog Devices ADP3169JRU-REEL is a 2/3-phase VRM9.0 controller for Intel processor power applications, packaged in a JRU package and supplied on tape-and-reel. The verified product listing identifies its primary function as a VRM9.0 2/3-phase controller for Intel platforms, but it does not provide the detailed electrical limits required to independently populate every performance field. [DATA_NEEDED: complete controller architecture details] What is a multiphase VRM controller? A multiphase voltage regulator module controller coordinates multiple power stages to deliver high-current, low-ripple rails to processors and other demanding digital loads. The ADP3169 is described in the supplied distributor data as a 2/3-phase solution for Intel VRM9.0 applications. Its role is control and sequencing rather than direct linear power conversion; external power devices typically perform the high-current switching function. The available listing supplies the key application identifier VRM9.0 and the phase configuration of 2/3 phases. Those details establish the component’s intended use in Intel-oriented processor power systems, although input-voltage range, output-voltage range, switching frequency, current-limit range, control method, and electrical timing are not supplied in the verified material. The package suffix JRU is retained exactly as listed, while the physical pin count and pin names are not provided in the source data. ADP3169JRU-REEL is intended for engineers designing or servicing boards that specifically call for a 2/3-phase Intel VRM9.0 controller. In such systems, controller compatibility depends on matching the external MOSFET selection, inductor design, sensing scheme, power sequencing, and PCB layout requirements. The tape-and-reel ordering suffix makes the part suitable for automated assembly, but it does not change the electrical function. A practical design constraint is that a distributor page may describe the device as a microcontroller or may provide only an abbreviated catalog description. Those labels should not be treated as a substitute for the manufacturer datasheet. Before layout release, verify the controller pinout, compensation method, current-limit behavior, gate-drive timing, auxiliary supplies, and recommended application circuit against the official technical documentation. This page consolidates the verified distributor description, current inventory references, ordering data, and design caveats for ADP3169JRU-REEL. It distinguishes known facts from parameters that require manufacturer documentation, helping buyers evaluate Intel VRM9.0 designs without inventing electrical specifications or assuming that every similarly described phase controller is pin-compatible.
ADP3335ARMZ-3.3 - 500mA anyCAP LDO, 3.3V Fixed | Analog Devices
The Analog Devices ADP3335ARMZ-3.3 is a 500 mA, 3.3 V fixed-output, high-accuracy anyCAP low-dropout (LDO) linear regulator housed in an 8-pin MSOP package. It operates from a 2.6 V to 12 V input rail and delivers up to 500 mA continuous load current with a typical dropout of 200 mV at full load, while achieving ±0.9% initial accuracy at 25°C and ±1.8% accuracy over line, load, and temperature. What is an LDO? An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage, typically with a dropout of only a few hundred millivolts. LDOs belong to the broader category of linear regulators, which in turn sit under voltage regulators inside the power management IC hierarchy. Because they dissipate excess voltage as heat rather than switching it, LDOs introduce no switching noise, making them ideal for powering noise-sensitive analog and RF loads. The anyCAP architecture used by the ADP3335 family allows stable operation with any good-quality output capacitor - including low-ESR ceramic MLCC types - which simplifies board layout and shrinks the BOM in space-constrained designs. Key features include an ultralow quiescent current that extends battery life in portable equipment, an ultralow dropout of 200 mV at 500 mA, integrated thermal shutdown and current-limit protection, and a noise performance optimized for wireless and instrumentation applications. The device is specified over the extended -40°C to +85°C (junction to +150°C) operating range, suiting industrial environments. The ADP3335 uses an enhanced bipolar process and a precision bandgap reference that drives an internal PNP pass element. The anyCAP loop compensation removes the ESR-related stability constraints of legacy LDOs, allowing designers to use small 1 µF to 10 µF ceramic capacitors at the output without compromising phase margin. This combination of low noise, tight accuracy, and ceramic-cap stability is unusual for a 500 mA part and is a hallmark of the ADP33xx family. Typical applications include wireless handsets, notebook and palmtop computers, PCMCIA cards, barcode scanners, low-noise analog circuits, and battery-powered instrumentation requiring a clean 3.3 V rail. The wide 2.6 V–12 V input range also supports 5 V and 9 V system buses, and the low dropout margin permits one-cell Li-ion discharge down to ~3.5 V before regulation is lost. When designing with this part, place input and output capacitors as close to the IC as possible and ensure the PCB copper under the exposed pad (if present) provides adequate thermal relief - continuous 500 mA into a 5 V input from 12 V dissipates 4.35 W. The fixed -3.3 suffix means no external feedback resistors are required, reducing BOM cost and layout area versus adjustable LDOs.
ADR4525BRZ-R7 - 2.5V Ultra-Low Noise Voltage Reference | Analog Devices
The ADR4525BRZ-R7 is a high precision, low power, low noise series voltage reference from Analog Devices, providing a fixed 2.5V output with ±0.02% maximum initial error (B grade). Housed in an 8-pin SOIC (SOIC-8) package, this device delivers up to 10 mA output current and operates over a wide supply range, making it ideal for precision data acquisition, industrial process control, and medical instrumentation. A voltage reference is a precision electronic component that produces a constant output voltage regardless of load, supply variations, or temperature. It serves as a stable benchmark for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and comparators, ensuring measurement accuracy. Voltage references are categorized into series and shunt types; the ADR4525 is a series reference, which offers lower power consumption and better accuracy than shunt references. Within the power management hierarchy, voltage references are essential building blocks in precision analog systems, bridging the gap between raw power supplies and the stable voltages required by sensitive circuitry. Key features of the ADR4525BRZ-R7 include ultra-low output noise (1.4 µV p-p typical from 0.1 Hz to 10 Hz), excellent temperature stability (2 ppm/°C typical), and a low dropout voltage. The device also features a wide operating temperature range of -40°C to +125°C, making it suitable for harsh environments. Its high accuracy and low noise are achieved through an innovative core topology that minimizes thermal and noise errors. Technically, the ADR4525 uses a bandgap-based architecture with precision laser-trimmed resistors to achieve its tight initial accuracy. The output is buffered to provide low output impedance and fast transient response. The device is fully specified over the industrial temperature range and is available in tape and reel packaging (R7 suffix) for automated assembly. Typical applications include precision data acquisition systems, high-resolution ADCs and DACs, industrial process control, medical devices, and portable instrumentation. The low noise and high accuracy make it particularly well-suited for reference buffering in 16-bit and higher resolution converters. When designing with the ADR4525BRZ-R7, ensure adequate decoupling on the input and output pins with 0.1 µF and 1 µF capacitors, respectively, to maintain stability and minimize noise. The output can source up to 10 mA, but for higher current loads, an external buffer is recommended.