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Analog Devices Inc. ADR5044AKSZ-REEL
- Part No.:
- ADR5044AKSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5044AKSZ-REEL.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,457
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Product details
Overview
ADR5044AKSZ-REEL from Analog Devices is a precision 4.096 V shunt voltage reference in SC70-3 package, delivering ±0.2% initial accuracy, 100 ppm/°C max temperature coefficient, and stable operation from 50 µA to 15 mA supply current - ideal for high-resolution ADC biasing in portable data acquisition systems.
For engineers reviewing the ADR5044AKSZ-REEL datasheet, ADR5044AKSZ-REEL pinout, ADR5044AKSZ-REEL application, or ADR5044AKSZ-REEL equivalent, this device serves as a space-constrained, low-drift, capacitor-free reference for battery-powered instrumentation requiring tight voltage stability across −40°C to +125°C.
Technical Context
The ADR5044AKSZ-REEL implements a bandgap-based shunt architecture with zero external compensation required, achieving stable regulation into any capacitive load. Its output voltage is trimmed at wafer level to ensure ±0.2% initial accuracy at 100 µA.
It operates over a wide dynamic current range (50 µA–15 mA) while maintaining <8 mV output variation across that range and exhibiting only 40 ppm hysteresis after thermal cycling - critical for repeatable measurements in automotive and industrial control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±8.192 mV (Grade A) - matches standard 12-bit DAC/ADC full-scale reference points. |
| Initial Accuracy | ±0.2% - enables single-point calibration in precision sensor signal chains without trimming. |
| Temp Coefficient | 100 ppm/°C max (−40°C to +125°C) - contributes ≤±0.512 mV drift over full automotive temperature range. |
| Operating Current | 50 µA to 15 mA - supports ultra-low-power sleep modes and high-speed settling in active measurement cycles. |
| Turn-On Settling | 56 µs (CLOAD = 0 µF) - ensures fast reference stabilization before ADC conversion starts. |
| Voltage Noise | 5.4 µV rms (0.1 Hz–10 Hz), 240 µV rms (10 Hz–10 kHz) - suitable for 16-bit+ data acquisition without added filtering. |
| Dynamic Impedance | 0.2 Ω - minimizes load-induced error when driving multiplexed analog front-ends. |
Pinout & Package
ADR5044AKSZ-REEL uses the 3-lead SC70 (KS-3) package: ultracompact footprint (2.00 mm × 1.25 mm × 0.9 mm), moisture sensitivity level 1, RoHS-compliant, reflow-compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Input terminal | Connected to positive supply via bias resistor; sinks current to regulate reference node voltage. |
| V− | Cathode / Output terminal | Provides stable 4.096 V output relative to system ground; must be tied to ground for proper operation. |
| T | Trim / Temperature sense | Internal trim node; datasheet recommends connecting to V+ to minimize thermal gradient effects on accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with any capacitive load up to ≥1 µF - eliminates BOM cost and layout area for decoupling. |
| Precision output voltage | 4.096 V nominal - aligns with common 12-bit (212 = 4096) digital scaling, simplifying gain calibration. |
| Extended temperature range | −40°C to +125°C operation - qualified for under-hood automotive and industrial edge-node deployment. |
| Low quiescent current | 50 µA minimum operating current - enables >10-year battery life in always-on sensor nodes. |
| Pin compatibility | Drop-in replacement for LM4040/LM4050 - allows legacy design upgrades without PCB revision. |
Applications
| Portable Instrumentation | Automotive Sensor Modules |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and lithium coin-cell power source. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V excitation and ADC reference voltage. Use Value: Enables ±0.005% full-scale measurement accuracy over 0–40°C ambient with no warm-up delay. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU with integrated pressure transducer and RF transmitter. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric bridge sensing and ADC reference in ASIL-B subsystem. Use Value: Maintains <±1.2 kPa pressure reading error across −40°C to +105°C vehicle operating range. |
| Industrial Data Loggers | Energy Metering Front-Ends |
Use Scenario: DIN-rail mounted environmental logger recording temperature, humidity, and CO₂ every 10 seconds. IC Role / Device Role / Timing Role: Primary reference for dual-slope integrating ADC and sensor excitation circuitry. Use Value: Delivers <10 ppm/°C effective drift contribution, meeting IEC 62931 Class 1 long-term stability requirements. |
Use Scenario: Three-phase smart meter using 24-bit sigma-delta ADCs for current/voltage sampling. IC Role / Device Role / Timing Role: Reference for metrology-grade ADCs and anti-aliasing filter biasing. Use Value: Supports 0.1% active energy accuracy per IEC 62053-21 over 20-year product lifetime with no recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR5044BKSZ-REEL | ±0.1% initial accuracy (vs. ±0.2%), same 4.096 V output and SC70-3 package | Better suited for 16-bit+ systems requiring tighter absolute accuracy without calibration | Select when higher initial tolerance justifies minor cost premium and tighter test limits are needed. |
| LM4040CIM3-4.1/NOPB | 4.096 V output, ±0.5% initial accuracy, 100 ppm/°C TC, SOT-23-3 package | Lacks automotive qualification and extended temperature support; lower accuracy grade | Choose for cost-sensitive consumer applications where −40°C to +85°C range suffices and calibration is acceptable. |
Compared with ADR5044AKSZ-REEL, the ADR5044BKSZ-REEL improves initial accuracy by 2× at identical temperature performance, while the LM4040CIM3-4.1 offers broader distributor availability but sacrifices automotive qualification and absolute precision - making ADR5044AKSZ-REEL optimal for calibrated industrial designs needing guaranteed −40°C to +125°C behavior.
Availability
ADR5044AKSZ-REEL is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial data loggers requiring stable component supply with guaranteed long-term continuity.
Supply support for ADR5044AKSZ-REEL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision measurement, industrial automation, and automotive markets since 1965.
The ADR504x family was designed specifically for space-constrained, high-accuracy shunt reference applications - targeting battery-powered instrumentation, automotive ECUs, and industrial data acquisition where size, stability, and low power are non-negotiable.
FAQ
What is the output voltage tolerance of the ADR5044AKSZ-REEL over temperature?
The ADR5044AKSZ-REEL has a maximum temperature coefficient of 100 ppm/°C across −40°C to +125°C. At 4.096 V nominal, this translates to ±0.512 mV drift per 100°C span - resulting in ≤±1.024 mV total deviation over full range. This is confirmed in Table 5 of the Rev. E datasheet under "Temperature Coefficient" for Grade A devices.
Can the ADR5044AKSZ-REEL operate without an external capacitor?
Yes, the ADR5044AKSZ-REEL is explicitly designed to be stable with no external capacitor required between its terminals. It remains stable into any capacitive load, including bypass caps used on the supply rail. This is stated in both the FEATURES and GENERAL DESCRIPTION sections of the datasheet and verified in Figure 14 (output impedance vs. frequency).
What is the minimum operating current for the ADR5044AKSZ-REEL at −40°C?
The ADR5044AKSZ-REEL requires a minimum operating current of 60 µA at −40°C, as specified in Table 5 ("Minimum Operating Current") under "−40°C < TA < +125°C". This is higher than the 50 µA minimum at 25°C to ensure reliable regulation under cold-start conditions.
Is the ADR5044AKSZ-REEL qualified for automotive applications?
No - only the ADR5044W variants (e.g., ADR5044WARTZ-R7) are automotive-qualified. The ADR5044AKSZ-REEL is rated for −40°C to +125°C operation and meets industrial reliability standards, but it lacks the controlled manufacturing flow, AEC-Q200 stress testing, and automotive-specific reliability reporting required for automotive use.
How does the ADR5044AKSZ-REEL compare to the LM4040 in terms of pin compatibility?
The ADR5044AKSZ-REEL is pin compatible with the LM4040 and LM4050 families in SC70-3 and SOT-23-3 packages. Pin 1 (V+), Pin 2 (V−), and Pin 3 (T) map identically - enabling drop-in replacement in existing layouts. This is explicitly noted in the FEATURES section and validated in the PIN CONFIGURATION diagram (Figure 1).
ADR5044AKSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SC-70, SOT-323
- Series:
- ADR504
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 5.4µVrms
- Noise - 10Hz to 10kHz:
- 240µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADR5044AKSZ-REEL FAQ
1.How can I place an order for ADR5044AKSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5044AKSZ-REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADR5044AKSZ-REEL reliable?
The price and inventory of ADR5044AKSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5044AKSZ-REEL is usually 5 days.
3.What payment methods are accepted for ADR5044AKSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5044AKSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR5044AKSZ-REEL?
ADR5044AKSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5044AKSZ-REEL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADR5044AKSZ-REEL?
For technical support, including ADR5044AKSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5044AKSZ-REEL requirements.
6.How does Aetrix verify that ADR5044AKSZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADR5044AKSZ-REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADR5044AKSZ-REEL meets industry standards.
7.What is the process for return or replacement of ADR5044AKSZ-REEL?
All ADR5044AKSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADR5044AKSZ-REEL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADR5044AKSZ-REEL part is unused and in its original packaging.
Return procedure for ADR5044AKSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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