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Analog Devices Inc. AD5227BUJZ10-RL7
- Part No.:
- AD5227BUJZ10-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
AD5227BUJZ10-RL7.pdf
- Description:
- IC DGT POT 10KOHM 64TAP TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,876
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Product details
Overview
AD5227BUJZ10-RL7 from Analog Devices is a 64-position, 10 kΩ end-to-end digital potentiometer in SOT-23-8 package, operating from 2.7 V to 5.5 V with ±0.15 LSB rheostat DNL and 10 ppm/°C potentiometer-mode tempco. It features midscale power-up reset, ultralow 0.4 μA typical supply current, and 1 μs wiper settling time-used for LCD backlight brightness control, programmable power supply feedback, and mechanical trimmer replacement in automotive-grade systems.
For engineers reviewing the AD5227BUJZ10-RL7 datasheet, AD5227BUJZ10-RL7 pinout, AD5227BUJZ10-RL7 application, or AD5227BUJZ10-RL7 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The AD5227BUJZ10-RL7 implements a 6-bit up/down counter driving a segmented thin-film resistor string (RAB = 10 kΩ) with CMOS switch matrix. Its negative-edge-triggered CLK, active-low CS, and level-sensitive U/D inputs enable manual (pushbutton/rotary encoder) or microcontroller-driven resistance adjustment without protocol overhead.
It operates in two primary modes: rheostat (W–B or W–A only, 35 ppm/°C tempco) and potentiometer divider (A–W–B, 5 ppm/°C midscale tempco). Internal POR forces wiper to code 32 at power-on, and terminal voltage range is strictly bounded by GND ≤ VA/VB/VW ≤ VDD due to on-chip ESD diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10 kΩ ±20% - defines full-scale analog range and sets max current (±500 μA continuous) in divider mode. |
| Resolution | 6-bit (64 steps) - enables 15.625 Ω step size in 10 kΩ version, supporting fine-grained calibration in LED current sources. |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with single Li-ion, 3.3 V logic, and 5 V legacy systems without level-shifting. |
| Tempco (Potentiometer Mode) | 5 ppm/°C at midscale - ensures <0.1% resistance drift over −40°C to +105°C, critical for stable voltage reference dividers. |
| Wiper Settling Time | 1 μs to ±1 LSB - supports high-speed closed-loop adjustments in auto-brightness control with >1 MHz update capability. |
| Supply Current | 0.4 μA typ @ 5 V - allows direct battery biasing for months in always-on sensor interface or portable device trim circuits. |
| Operating Temperature | −40°C to +105°C - qualified for under-hood automotive, industrial HMIs, and outdoor display electronics. |
Pinout & Package
AD5227BUJZ10-RL7 is housed in a Pb-free thin SOT-23-8 (TSOT-8) package measuring 2.9 mm × 3.0 mm × 1.0 mm, optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CLK | Clock input | Negative-edge-triggered step command; each pulse increments/decrements wiper position when CS = low. |
| 2 - U/D | Direction control | Logic high = increment RWB; logic low = decrement RWB; no internal pull-up/pull-down. |
| 3 - A | Resistor terminal A | High-side end of 10 kΩ resistor string; voltage must stay within GND–VDD bounds. |
| 4 - GND | Analog/digital ground | Single-point return for all signals; must tie to system ground with low-inductance path. |
| 5 - W | Wiper output | Variable tap point; wiper resistance 50–200 Ω affects low-code accuracy and max current handling. |
| 6 - B | Resistor terminal B | Low-side end of resistor string; used as reference or return in rheostat configurations. |
| 7 - CS | Chip select | Active-low enable; high state disables clock response, allowing multiple devices on shared CLK/U/D lines. |
| 8 - VDD | Positive supply | Power rail for core logic and switches; must be powered before applying any voltage to A/W/B terminals. |
Key Features
| Feature | Design Value |
|---|---|
| Midscale power-on reset | Wiper defaults to code 32 (50% RAB), eliminating startup transients in voltage divider feedback loops. |
| Ultralow IDD | 0.4 μA typical supply current enables direct coin-cell or supercapacitor biasing for decades-long calibration retention. |
| Simple 3-wire interface | No SPI/I²C controller required-compatible with GPIOs, discrete logic, or mechanical encoders without firmware overhead. |
| Automotive temperature grade | Guaranteed operation from −40°C to +105°C supports engine control, dashboard displays, and ADAS subsystems. |
| Low tempco in pot mode | 5 ppm/°C midscale drift ensures <±0.05% gain error over full automotive temperature range in precision reference applications. |
Applications
| LCD Backlight Control | Programmable Power Supply |
|---|---|
Use Scenario: Automatic brightness regulation in automotive infotainment displays using ambient light sensor feedback. IC Role / Device Role / Timing Role: AD5227BUJZ10-RL7 acts as digitally adjustable voltage divider setting op-amp reference for LED driver IC. Use Value: Enables closed-loop dimming with <1% gain drift over temperature, replacing dual-potentiometer manual calibration. |
Use Scenario: Fine-tuning output voltage of DC-DC converter in industrial PLC power rails. IC Role / Device Role / Timing Role: AD5227BUJZ10-RL7 replaces fixed resistor in FB network of buck regulator to support remote firmware-adjustable VOUT. Use Value: Allows field calibration without hardware change; 64-step resolution provides 12.5 mV granularity at 0.8 V reference. |
| Portable Electronics Level Adjustment | Mechanical Potentiometer Replacement |
Use Scenario: Volume or contrast control in handheld medical monitors powered by rechargeable Li-ion batteries. IC Role / Device Role / Timing Role: AD5227BUJZ10-RL7 serves as solid-state rheostat in audio amplifier gain stage, controlled via tactile pushbuttons. Use Value: Eliminates wear-out failure mode; 0.4 μA quiescent current extends battery life by >2 years versus electromechanical alternatives. |
Use Scenario: Calibration trim in factory-set test equipment requiring long-term stability and reprogrammability. IC Role / Device Role / Timing Role: AD5227BUJZ10-RL7 substitutes for 10 kΩ cermet trimmer in analog front-end offset null circuit. Use Value: Provides 6× higher resolution than 10-turn mechanical pot, with guaranteed monotonicity and no contact bounce. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ10 | Nonvolatile EEPROM storage; 256-step resolution; SPI interface; same 10 kΩ RAB and SOT-23-8 package. | Retains wiper setting across power cycles; requires SPI host and programming sequence. | Select AD5170BRMZ10 when persistent settings are mandatory and SPI infrastructure exists. |
| MCP4017T-103 | 64-step, 10 kΩ, I²C interface; 1.8–5.5 V supply; ±0.3 LSB DNL; SOIC-8 package (larger footprint). | Requires I²C bus and pull-up resistors; lacks midscale POR; not automotive-qualified. | Select MCP4017T-103 for cost-sensitive consumer designs where I²C is already present and extended temp range is unnecessary. |
Compared with AD5227BUJZ10-RL7, AD5170BRMZ10 adds nonvolatility at the cost of interface complexity and higher active current, while MCP4017T-103 trades automotive qualification and simple up/down control for I²C compatibility and broader voltage support-neither is pin-compatible, but both serve overlapping analog trimming roles with distinct system-level trade-offs.
Availability
AD5227BUJZ10-RL7 is available at Aetrix Electronics and suitable for LCD backlight control, programmable power supply feedback, and portable electronics level adjustment requiring stable component supply across automotive and industrial production cycles.
Supply support for AD5227BUJZ10-RL7 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.
The AD5227 belongs to Analog Devices' precision digital potentiometer product line, designed specifically for replacing mechanical trimmers in automotive, industrial, and portable systems where reliability, temperature stability, and low power are critical.
FAQ
What is the end-to-end resistance tolerance of the AD5227BUJZ10-RL7?
The AD5227BUJZ10-RL7 has a nominal end-to-end resistance of 10 kΩ with a tolerance of ±20%, as specified in Table 2 of the Rev. B datasheet. This tolerance applies across the full operating temperature range and impacts absolute accuracy in voltage divider or current-setting applications-designers should calibrate or use ratiometric configurations to mitigate its effect.
Does the AD5227BUJZ10-RL7 retain its wiper position after power cycling?
No, the AD5227BUJZ10-RL7 does not retain wiper position after power loss. It features a power-on reset (POR) that forces the wiper to midscale (code 32) each time VDD is applied. For nonvolatile storage, consider the pin-compatible AD5170BRMZ10, which uses EEPROM to preserve settings across power cycles.
Can the AD5227BUJZ10-RL7 operate with a 3.3 V supply?
Yes, the AD5227BUJZ10-RL7 is fully specified for operation from 2.7 V to 5.5 V, including standard 3.3 V logic supplies. At 3.3 V, it maintains 0.4 μA typical supply current, 1 μs settling time, and guaranteed monotonicity-making it ideal for mixed-voltage systems interfacing with 3.3 V microcontrollers.
What is the maximum current the AD5227BUJZ10-RL7 can handle between terminals?
The AD5227BUJZ10-RL7 supports ±500 μA continuous current across the A–B terminals when configured as a 10 kΩ potentiometer. In rheostat mode (W–B), continuous current is limited to ±1 mA, and pulsed current must not exceed ±20 mA to avoid switch degradation-exceeding these limits risks permanent damage to internal CMOS switches.
How does the AD5227BUJZ10-RL7 differ from the AD5227BUJZ50-RL7?
The AD5227BUJZ10-RL7 and AD5227BUJZ50-RL7 share identical architecture, pinout, timing, and temperature rating-but differ only in nominal end-to-end resistance: 10 kΩ vs. 50 kΩ. This changes step size (156 Ω vs. 781 Ω), bandwidth (460 kHz vs. 100 kHz at midscale), and max continuous current (±500 μA vs. ±100 μA), directly affecting loop stability and resolution in specific applications.
AD5227BUJZ10-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 64
- Resistance (Ohms):
- 10k
- Interface:
- Up/Down (U/D, CS)
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- TSOT-23-8
- Operating Temperature:
- -40°C ~ 105°C
- Resistance - Wiper (Ohms) (Typ):
- 100
AD5227BUJZ10-RL7 FAQ
1.How can I place an order for AD5227BUJZ10-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5227BUJZ10-RL7 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 AD5227BUJZ10-RL7 reliable?
The price and inventory of AD5227BUJZ10-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5227BUJZ10-RL7 is usually 5 days.
3.What payment methods are accepted for AD5227BUJZ10-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5227BUJZ10-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5227BUJZ10-RL7?
AD5227BUJZ10-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5227BUJZ10-RL7 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 AD5227BUJZ10-RL7?
For technical support, including AD5227BUJZ10-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5227BUJZ10-RL7 requirements.
6.How does Aetrix verify that AD5227BUJZ10-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5227BUJZ10-RL7 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 AD5227BUJZ10-RL7 meets industry standards.
7.What is the process for return or replacement of AD5227BUJZ10-RL7?
All AD5227BUJZ10-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5227BUJZ10-RL7, 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 AD5227BUJZ10-RL7 part is unused and in its original packaging.
Return procedure for AD5227BUJZ10-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5227BUJZ10-RL7 Tags
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MCP4018T-103E/LT
Microchip Technology
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MCP4018T-503E/LT
Microchip Technology
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MCP4011T-103E/SN
Microchip Technology
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MCP4018T-104E/LT
Microchip Technology
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MCP4017T-503E/LT
Microchip Technology
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MCP4018T-502E/LT
Microchip Technology
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MCP4017T-103E/LT
Microchip Technology
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MCP4531T-103E/MF
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MCP4021T-202E/SN
Microchip Technology
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MCP4023T-103E/CH
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MCP4022T-503E/CH
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MCP4551T-502E/MS
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