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Analog Devices Inc. AD5292SRUZ-20-EP
- Part No.:
- AD5292SRUZ-20-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5292SRUZ-20-EP.pdf
- Description:
- IC DGTL POT 1024POS 20K 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,241
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Product details
Overview
AD5292SRUZ-20-EP from Analog Devices is a single-channel, 1024-position digital potentiometer with 20 kΩ nominal resistance, ±1% end-to-end resistor tolerance in R-Perf mode, 20-times programmable nonvolatile memory, and operation across −55°C to +125°C for defense/aerospace applications. It functions as a precision rheostat or voltage divider in calibration and gain-setting circuits.
For engineers reviewing the AD5292SRUZ-20-EP datasheet, AD5292SRUZ-20-EP pinout, AD5292SRUZ-20-EP application, or AD5292SRUZ-20-EP equivalent, this enhanced product delivers verified resistor performance mode operation, SPI-compatible wiper control with readback, and guaranteed temperature-stable behavior in extended industrial environments.
Technical Context
The AD5292SRUZ-20-EP integrates a 10-bit RDAC core with on-chip 20-TP OTP memory, enabling permanent wiper position storage without external power during fuse programming. Its dual-supply capability (±9 V to ±16.5 V) and single-supply range (+9 V to +33 V) support ground-referenced bipolar signal adjustment and high-voltage instrumentation interfaces.
Resistor performance mode ensures ≤±1% RAB tolerance over temperature and voltage, while separate rheostat (35 ppm/°C) and potentiometer (5 ppm/°C) temperature coefficients allow optimized selection per circuit topology. SPI interface operates up to 50 MHz with SYNC-frame synchronization and RDY status signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit (1024 positions): Enables fine-grained analog tuning with 0.1% step resolution across full scale. |
| Nominal Resistance | 20 kΩ: Matches standard gain-setting and sensor bias networks; supports ≤±3 mA terminal current. |
| R-Perf Mode Tolerance | ±1% RAB error: Eliminates need for post-calibration trimming in open-loop gain/offset circuits. |
| Memory Type | 20-TP OTP: Allows 20 irreversible wiper saves; no battery or capacitor backup required for retention. |
| Supply Range | +9 V to +33 V (single) or ±9 V to ±16.5 V (dual): Supports high-voltage industrial sensors and legacy ±15 V systems. |
| Tempco (Rheostat) | 35 ppm/°C: Limits resistance drift to <0.4% over −55°C to +125°C in current-sense or bias applications. |
| Tempco (Divider) | 5 ppm/°C: Maintains stable voltage division ratio for precision reference scaling and ADC biasing. |
| Interface | SPI (CPOL = 0, CPHA = 1): Compatible with FPGA/CPLD and microcontroller peripherals without protocol translation. |
Pinout & Package
AD5292SRUZ-20-EP is housed in a 14-lead TSSOP (RU-14) package, JEDEC MO-153-AB-1 compliant, with 0.65 mm lead pitch and exposed thermal pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Asynchronous hardware reset | Loads 20-TP memory into RDAC register on rising edge; tie to VLOGIC if unused. |
| 2: VSS | Negative supply rail | 0 V reference for single-supply use; decouple with 0.1 μF + 10 μF capacitors. |
| 3: A | RDAC terminal A | High-side resistor endpoint; supports VA between VSS and VDD with no polarity constraint. |
| 4: W | Wiper terminal | Analog output node; max ±3 mA continuous current; capacitance 65 pF at mid-scale. |
| 5: B | RDAC terminal B | Low-side resistor endpoint; symmetric with Terminal A for bidirectional signal routing. |
| 6: VDD | Positive supply rail | Decouple with 0.1 μF + 10 μF ceramics; absolute max 35 V relative to GND. |
| 7: EXT_CAP | External capacitor connection | Requires 1 μF ≥7 V capacitor for OTP programming stability and noise filtering. |
| 8: VLOGIC | Digital supply | 2.7 V–5.5 V logic rail; independent of analog supplies; decouple locally. |
| 9: GND | Logic ground reference | Separate from power ground in mixed-signal layouts to minimize digital noise coupling. |
| 10: DIN | SPI data input | 16-bit shift register input; data latched on SCLK falling edge; VIH ≥2.0 V. |
| 11: SCLK | SPI clock input | Up to 50 MHz operation; t2/t3 ≥10 ns high/low time; CPOL=0, CPHA=1 timing. |
| 12: SYNC | Frame synchronization | Falling edge enables 16-bit transfer; rising edge commits command; min high time 400 ns. |
| 13: SDO | SPI data output | Open-drain; requires external pull-up; used for daisy-chain or register readback. |
| 14: RDY | Operation status flag | Active-high open-drain; asserts after register write (410 ns–2.4 μs) or memory program (8 ms). |
Key Features
| Feature | Design Value |
|---|---|
| Resistor Performance Mode | Guarantees ±1% RAB tolerance across −55°C to +125°C and 21 V–33 V supply range-enables direct replacement of mechanical pots in calibration-critical systems. |
| 20-Times Programmable Memory | OTP-based wiper storage with no external power needed for fuse blow; 20 irreversible saves simplify field recalibration without firmware updates. |
| Wide Supply Flexibility | Operates from +9 V to +33 V (single) or ±9 V to ±16.5 V (dual), supporting legacy ±15 V instrumentation and modern high-voltage sensor front-ends. |
| Low Tempcos | 5 ppm/°C (voltage divider) and 35 ppm/°C (rheostat) ensure stable gain/offset over military temperature range-critical for unattended aerospace deployments. |
| SPI Readback Capability | Wiper position can be read via SDO after command; eliminates need for external monitoring circuits in closed-loop auto-calibration systems. |
| Enhanced Product Qualification | AQEC-compliant with controlled manufacturing baseline, single fab/assembly site, and full qualification data available-meets MIL-PRF-38535 Class K requirements. |
Applications
| Instrumentation Gain Calibration | Programmable Power Supply |
|---|---|
|
Use Scenario: Precision DC gain setting in high-voltage op-amp stages for test equipment and data acquisition front-ends. IC Role / Device Role / Timing Role: Acts as digitally controlled feedback resistor in non-inverting amplifier configuration; sets gain ratio with <0.1% step resolution. Use Value: Replaces manual trimmers with automated, repeatable calibration; ±1% RAB tolerance eliminates post-assembly gain error correction. |
Use Scenario: Adjustable output voltage control in isolated DC-DC converters for avionics and radar subsystems. IC Role / Device Role / Timing Role: Configures reference divider network for error amplifier feedback loop; updated dynamically during system boot or fault recovery. Use Value: Enables software-defined output levels without hardware changes; 20-TP memory retains last-set voltage after power cycle. |
| Sensor Offset Adjustment | Programmable Filter Tuning |
|
Use Scenario: Nulling thermocouple or strain gauge bridge offsets in harsh-environment condition monitoring systems. IC Role / Device Role / Timing Role: Functions as rheostat in Wheatstone bridge leg to balance differential output before amplification. Use Value: 35 ppm/°C tempco ensures offset remains stable across −55°C to +125°C; no recalibration needed during thermal cycling. |
Use Scenario: Real-time cutoff frequency adjustment in active low-pass filters for EMI suppression in motor drive feedback paths. IC Role / Device Role / Timing Role: Sets RC time constant in Sallen-Key topology by varying resistance in series with fixed capacitor. Use Value: SPI interface allows dynamic filter reconfiguration during runtime; 1024-step resolution yields <0.5% corner frequency accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5291BRUZ-20-EP | 512-position (9-bit) resolution; same 20 kΩ, ±1% R-Perf mode, and −55°C to +125°C rating. | Limited to coarse adjustments where <0.2% step resolution is acceptable; lower code density reduces SPI transaction overhead. | Select when cost sensitivity outweighs fine-tuning requirement and system firmware uses simpler 9-bit addressing. |
| MAX5487ETE+T | 100 kΩ nominal resistance; 256-position (8-bit); I²C interface; −40°C to +85°C commercial grade only. | Not qualified for extended temperature or defense use; lacks 20-TP memory and R-Perf mode guarantee. | Choose only for benign-environment consumer or industrial prototypes where qualification and precision are secondary to rapid evaluation. |
Compared with AD5291BRUZ-20-EP and MAX5487ETE+T, the AD5292SRUZ-20-EP uniquely combines military-grade temperature range, 10-bit resolution, and guaranteed ±1% resistor tolerance-making it the sole option for calibrated, field-programmable analog tuning in AQEC-compliant systems.
Availability
AD5292SRUZ-20-EP is available at Aetrix Electronics and suitable for instrumentation gain calibration, programmable power supply design, and sensor offset adjustment requiring stable component supply across extended temperature and voltage ranges.
Supply support for AD5292SRUZ-20-EP 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 instrumentation, aerospace, and industrial markets since 1965.
The AD5292-EP product line delivers enhanced reliability and extended environmental operation for defense and aerospace applications, with focus on nonvolatile digital potentiometers that replace mechanical trimmers in mission-critical calibration paths.
FAQ
What is the guaranteed resistor tolerance of AD5292SRUZ-20-EP in resistor performance mode?
The AD5292SRUZ-20-EP guarantees ±1% end-to-end resistance tolerance (RAB) in resistor performance mode across −55°C to +125°C and supply voltages from 21 V to 33 V. This specification is production-tested and documented in Table 1 of the Rev. A datasheet, enabling open-loop calibration without post-manufacturing trimming.
How many times can the wiper position be permanently stored in AD5292SRUZ-20-EP?
The AD5292SRUZ-20-EP provides 20-times programmable (20-TP) nonvolatile memory for wiper position storage. Each programming event permanently blows an internal fuse; no external power is required during programming, and the saved value persists through power cycles and temperature extremes.
Does AD5292SRUZ-20-EP support dual-supply operation?
Yes, AD5292SRUZ-20-EP supports dual-supply operation from ±9 V to ±16.5 V, allowing ground-referenced bipolar signal adjustment. Terminal A, B, and W have no polarity constraints relative to each other, enabling flexible placement in AC-coupled or bidirectional analog signal paths.
What is the maximum SPI clock frequency supported by AD5292SRUZ-20-EP?
The AD5292SRUZ-20-EP supports SPI clock frequencies up to 50 MHz, with minimum SCLK high and low times of 10 ns each. Timing compliance is verified across −55°C to +125°C, and the interface uses CPOL = 0 and CPHA = 1 configuration per Figure 3 and Table 3.
Is AD5292SRUZ-20-EP qualified for aerospace applications?
Yes, AD5292SRUZ-20-EP is an Enhanced Product part qualified under Analog Devices' AQEC program for defense and aerospace use. It features controlled manufacturing baseline, single fab/assembly site, full qualification data on request, and guaranteed operation from −55°C to +125°C.
AD5292SRUZ-20-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 1024
- Resistance (Ohms):
- 20k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 9V ~ 33V, ±9V ~ 16.5V
- Features:
- -
- Tolerance:
- ±1%
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -55°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 60
AD5292SRUZ-20-EP FAQ
1.How can I place an order for AD5292SRUZ-20-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5292SRUZ-20-EP 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 AD5292SRUZ-20-EP reliable?
The price and inventory of AD5292SRUZ-20-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5292SRUZ-20-EP is usually 5 days.
3.What payment methods are accepted for AD5292SRUZ-20-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5292SRUZ-20-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5292SRUZ-20-EP?
AD5292SRUZ-20-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5292SRUZ-20-EP 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 AD5292SRUZ-20-EP?
For technical support, including AD5292SRUZ-20-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5292SRUZ-20-EP requirements.
6.How does Aetrix verify that AD5292SRUZ-20-EP is sourced from the original manufacturer or authorized distributors?
All AD5292SRUZ-20-EP 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 AD5292SRUZ-20-EP meets industry standards.
7.What is the process for return or replacement of AD5292SRUZ-20-EP?
All AD5292SRUZ-20-EP units undergo pre-shipment inspection (PSI). If there is an issue with AD5292SRUZ-20-EP, 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 AD5292SRUZ-20-EP part is unused and in its original packaging.
Return procedure for AD5292SRUZ-20-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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