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Analog Devices Inc. AD1580ARTZ-REEL
- Part No.:
- AD1580ARTZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AD1580ARTZ-REEL.pdf
- Description:
- IC VREF SHUNT 0.82% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,917
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Product details
Overview
AD1580ARTZ-REEL from Analog Devices is a 2-terminal shunt voltage reference delivering a precise 1.225 V output with ±10 mV initial accuracy, ±100 ppm/°C temperature drift over −40°C to +85°C, and 20 µV rms wideband noise (10 Hz–10 kHz). It operates from 50 µA to 10 mA reverse current and is used in high-accuracy 3 V/5 V data converters, portable instrumentation, and smart industrial transmitters.
For engineers reviewing the AD1580ARTZ-REEL datasheet, AD1580ARTZ-REEL pinout, AD1580ARTZ-REEL application, or AD1580ARTZ-REEL equivalent, key selection criteria include micropower operation at 50 µA minimum current, SOT-23-3 package compatibility, low dynamic output impedance (≤1 Ω), and guaranteed hysteresis ≤80 µV across thermal cycling.
Technical Context
The AD1580ARTZ-REEL implements curvature-corrected band gap topology using matched on-chip transistors and ΔVBE-based compensation to achieve stable 1.225 V output. Its two-transistor current-density ratio design minimizes nonlinear temperature drift without external components.
It functions as a passive 2-terminal device requiring only an external series resistor for biasing, supports any capacitive load without instability, and maintains specified performance under reverse current from 50 µA to 10 mA - enabling direct integration into battery-powered 3 V systems and precision ADC/DAC reference paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; ±10 mV initial error at 25°C ensures ≤0.82% absolute reference tolerance before temperature effects. |
| Tempco | ±100 ppm/°C max over −40°C to +85°C; contributes ≤0.79 mV total drift across full range, critical for 10-bit converter stability. |
| Min Operating Current | 50 µA; enables operation in ultra-low-power modes of portable devices without dropout or regulation loss. |
| Noise (10 Hz–10 kHz) | 20 µV rms; limits added quantization uncertainty to <0.02 LSB in 12-bit 1.225 V full-scale systems. |
| Dynamic Output Impedance | ≤1 Ω at 120 Hz; maintains reference integrity when driving switching loads like SAR ADC sample-and-hold circuits. |
| Turn-On Settling Time | 5 µs to 0.1%; allows rapid power cycling in duty-cycled sensor nodes without reference stabilization delay. |
| Hysteresis | ≤80 µV; guarantees repeatable output after thermal excursions, essential for calibration-critical industrial transmitters. |
Pinout & Package
AD1580ARTZ-REEL is housed in a RoHS-compliant 3-lead SOT-23-3 (RT-3) surface-mount package measuring 2.90 mm × 1.30 mm × 1.02 mm, with gull-wing leads and JEDEC TO-236-AB compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Input Terminal | Connects to positive supply rail via series resistor; reverse-biased operation requires current sourcing into this pin. |
| V− | Cathode / Output Terminal | Provides regulated 1.225 V reference voltage; must be tied to system ground or load return path. |
| NC | No Connect | Unbonded internal pad; left floating per datasheet Figure 1; no electrical function or PCB routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-Corrected Band Gap Core | Eliminates need for external trimming while achieving ±100 ppm/°C tempco - reduces BOM count and calibration overhead. |
| Stable with Any Capacitive Load | Enables direct connection to ADC reference inputs or local decoupling caps up to 1 µF without oscillation or ringing. |
| Low 50 µA Minimum Current | Permits use in 3 V coin-cell applications (e.g., handheld DMMs) where quiescent current budgets are sub-100 µA. |
| High ESD Robustness | 4 kV HBM rating protects against handling damage during automated assembly and field service replacement. |
| SC70/SOT-23 Dual Packaging | Same die in both packages allows footprint flexibility - RT-3 variant (AD1580ARTZ-REEL) targets space-constrained PCBs. |
Applications
| Portable Instrumentation | Industrial Smart Transmitters |
|---|---|
|
Use Scenario: Handheld digital multimeters (DMMs) and portable gas analyzers requiring stable reference under varying battery voltage and ambient temperature. IC Role / Device Role / Timing Role: Shunt reference providing 1.225 V基准 for 12-bit sigma-delta ADC front-end, directly replacing larger 3-pin series references. Use Value: 50 µA min current enables >500-hour operation on CR2032; ±100 ppm/°C drift ensures <±0.5 LSB error across −10°C to +50°C operating range. |
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters with onboard microcontroller and analog signal conditioning. IC Role / Device Role / Timing Role: Primary voltage reference for ratiometric sensor excitation and ADC conversion, referenced to isolated loop ground. Use Value: ≤80 µV hysteresis prevents calibration drift after field temperature cycling; SOT-23-3 footprint fits tight 2-layer transmitter PCB layouts. |
| 3 V Data Converter Reference | PCMCIA/CardBus Power Management |
|
Use Scenario: Reference supply for AD7714-3/AD7715-3 24-bit sigma-delta ADCs in battery-powered data loggers. IC Role / Device Role / Timing Role: Low-noise (20 µV rms), low-drift shunt reference connected to REFIN(+) and REFIN(−) pins with >1 GΩ input impedance. Use Value: 20 µV rms noise contributes <0.001% of full-scale error; 1.225 V output matches optimal ADC reference headroom for 3 V supplies. |
Use Scenario: Voltage reference for card detection, level-shifting, and power sequencing logic in PCMCIA Type II slots. IC Role / Device Role / Timing Role: Stable bias source for comparator thresholds and regulator enable circuits operating from shared 3.3 V bus. Use Value: Wide 50 µA–10 mA operating range accommodates variable load currents during hot-insertion; SOT-23-3 eases placement near edge connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 2.5 V fixed output; ±1% initial accuracy; 100 ppm/°C tempco; 80 µA min current. | Higher output voltage limits use in 1.225 V–optimized 12-bit DACs; less suitable for low-voltage 3 V ADCs with tight headroom. | Select when 2.5 V reference is acceptable and cost sensitivity outweighs precision requirements. |
| MAX6012AESA+ | 1.25 V output; ±0.2% initial accuracy; 75 ppm/°C tempco; 35 µA min current; SO-8 package. | Larger SO-8 footprint incompatible with SOT-23 layouts; tighter initial tolerance but higher tempco than AD1580B variants. | Choose for improved initial accuracy where board area permits SO-8 and 1.25 V output aligns with system architecture. |
Compared with TLVH431ACDBVR and MAX6012AESA+, the AD1580ARTZ-REEL offers exact 1.225 V output matching legacy converter designs, smallest SOT-23-3 footprint, and lowest minimum current - making it optimal for space- and power-constrained 3 V measurement systems where 1.225 V is specified.
Availability
AD1580ARTZ-REEL is available at Aetrix Electronics and suitable for portable instrumentation, industrial smart transmitters, and 3 V data converter reference applications requiring stable component supply, RoHS compliance, and tape-and-reel delivery for SMT production.
Supply support for AD1580ARTZ-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, headquartered in Norwood, MA, with design centers worldwide.
The AD1580 product line delivers precision micropower shunt references optimized for battery-powered measurement systems, portable test equipment, and industrial sensors where size, current efficiency, and temperature stability are critical.
FAQ
What is the output voltage tolerance of the AD1580ARTZ-REEL at 25°C?
The AD1580ARTZ-REEL has a ±10 mV initial output voltage tolerance at 25°C, corresponding to ±0.82% of its nominal 1.225 V output. This specification is guaranteed per the ordering guide and applies to the "A" grade in SOT-23-3 packaging. The AD1580ARTZ-REEL does not require external calibration to meet this tolerance.
Can the AD1580ARTZ-REEL drive a 1 µF capacitor directly without instability?
Yes, the AD1580ARTZ-REEL is explicitly characterized as stable with any value of capacitive load, including 1 µF, as confirmed in the General Description and Figure 16 of the datasheet. Unlike many shunt references, it contains internal compensation that prevents ringing or oscillation - eliminating the need for series isolation resistors in most applications.
What is the maximum reverse current the AD1580ARTZ-REEL can handle continuously?
The AD1580ARTZ-REEL supports continuous reverse current up to 10 mA, as specified in the Features and Absolute Maximum Ratings tables. Exceeding 10 mA risks exceeding the 0.3 W power dissipation limit in the SOT-23-3 package, especially at elevated ambient temperatures.
How does the AD1580ARTZ-REEL compare to the AD1580BRTZ-REEL7 in temperature performance?
The AD1580ARTZ-REEL has ±100 ppm/°C maximum temperature drift and ±10 mV initial error, while the AD1580BRTZ-REEL7 offers ±50 ppm/°C drift and ±1 mV initial error. Both operate over −40°C to +85°C, but the "B" grade provides tighter specifications for higher-accuracy applications such as calibrated test equipment.
Is the AD1580ARTZ-REEL compatible with 3 V supply systems powering 12-bit DACs like the AD7945?
Yes, the AD1580ARTZ-REEL is specifically recommended for 3 V data converters including the AD7945, as documented in the "Using the AD1580 with 3 V Data Converters" section. Its 1.225 V output, low noise, and micropower operation make it ideal for multiplying DAC reference inputs in single-supply configurations.
AD1580ARTZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.82%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 5µVp-p
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 50 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AD1580ARTZ-REEL FAQ
1.How can I place an order for AD1580ARTZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1580ARTZ-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 AD1580ARTZ-REEL reliable?
The price and inventory of AD1580ARTZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1580ARTZ-REEL is usually 5 days.
3.What payment methods are accepted for AD1580ARTZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1580ARTZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1580ARTZ-REEL?
AD1580ARTZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1580ARTZ-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 AD1580ARTZ-REEL?
For technical support, including AD1580ARTZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1580ARTZ-REEL requirements.
6.How does Aetrix verify that AD1580ARTZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD1580ARTZ-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 AD1580ARTZ-REEL meets industry standards.
7.What is the process for return or replacement of AD1580ARTZ-REEL?
All AD1580ARTZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1580ARTZ-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 AD1580ARTZ-REEL part is unused and in its original packaging.
Return procedure for AD1580ARTZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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