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Analog Devices Inc. AD5246BKS10-R2
- Part No.:
- AD5246BKS10-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD5246BKS10-R2.pdf
- Description:
- IC POT DGTL 10K 128POS SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,766
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Product details
Overview
AD5246BKS10-R2 from Analog Devices is a 128-position I²C-compatible digital resistor with 10 kΩ end-to-end resistance, SC70-6 package (2 mm × 2.1 mm), single-supply operation from 2.7 V to 5.5 V, and 45 ppm/°C temperature coefficient-designed for precision gain control and sensor biasing in space-constrained industrial and automotive systems.
For engineers reviewing the AD5246BKS10-R2 datasheet, AD5246BKS10-R2 pinout, AD5246BKS10-R2 application, or AD5246BKS10-R2 equivalent, this page delivers verified electrical specs, validated I²C timing, confirmed rheostat-mode performance, and real-world selection guidance for mechanical potentiometer replacement and analog signal conditioning.
Technical Context
The AD5246BKS10-R2 implements a 7-bit RDAC architecture with linear wiper positioning across 128 taps, where resistance between W and B follows RWB = (D/128) × RAB + RW. It uses CMOS transmission gates for switch elements and features full read/write access to the wiper register via standard I²C protocol (400 kHz max clock frequency).
Its SC70-6 package integrates VDD, GND, SCL, SDA, W, and B terminals with internal ESD protection on digital pins and forward-biased clamping diodes on resistor terminals-enabling safe operation within VDD/GND rail limits and supporting battery-powered applications with 0.9 µA typical supply current at 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10 kΩ - defines maximum programmable resistance range between A and B terminals for gain/offset tuning. |
| Resolution | 128 positions (7-bit) - provides 0.78% step resolution for fine analog adjustment without mechanical wear. |
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct interface with 3.3 V and 5 V logic systems and portable battery rails. |
| Temperature Coefficient | 45 ppm/°C - ensures stable resistance over –40°C to +125°C operating range, critical for automotive and industrial environments. |
| I²C Clock Frequency | 400 kHz - enables fast digital reconfiguration compatible with standard microcontroller peripherals. |
| Supply Current (Typ) | 0.9 µA at 3.3 V - allows continuous biasing in always-on sensor calibration circuits with negligible battery drain. |
| Rheostat Mode INL | ±0.25 LSB - guarantees monotonicity and high linearity for precision transducer scaling applications. |
Pinout & Package
AD5246BKS10-R2 is housed in an ultracompact SC70-6 package (2.0 mm × 2.1 mm × 0.9 mm height), optimized for high-density PCB layouts and portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive power supply input | Supplies internal logic and switch bias; must be powered before applying voltage to W or B terminals. |
| GND | Digital ground reference | Common return path for logic and resistor terminals; requires low-inductance connection for noise immunity. |
| SCL | I²C serial clock input | Positive-edge-triggered clock for synchronous data transfer; supports 400 kHz operation. |
| SDA | I²C bidirectional data line | Open-drain interface requiring external pull-up; used for both writing wiper code and reading back current setting. |
| W | Wiper terminal | Programmable tap point between A and B; exhibits 75–400 Ω typical wiper resistance depending on code and supply. |
| B | Resistor end terminal | Fixed endpoint of 10 kΩ resistive element; voltage must remain within VDD–GND bounds to avoid diode conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Power-on preset to midscale | Automatically initializes wiper to code 0x40 (50% position) at power-up-eliminates undefined startup states in control loops. |
| Full read/write capability | Enables firmware verification of wiper position and dynamic recalibration during system operation without external measurement. |
| Low temperature coefficient | 45 ppm/°C drift ensures <±0.5% resistance change over –40°C to +125°C-critical for uncalibrated sensor front-ends. |
| Ultralow quiescent current | 0.9 µA typical IDD at 3.3 V permits permanent biasing in battery-backed instrumentation with multi-year runtime. |
| I²C compatibility | Standard 7-bit slave address (0x5C) and ACK/NACK protocol enable plug-and-play integration with ARM, PIC, and ESP32 host controllers. |
Applications
| RF Amplifier Biasing | Transducer Sensor Adjustment |
|---|---|
Use Scenario: Setting precise DC bias current/voltage for GaAs FET or LDMOS power amplifiers in cellular base stations and radar modules. IC Role / Device Role / Timing Role: Rheostat-mode digital resistor controlling amplifier quiescent point; no timing role-static analog trim function. Use Value: Replaces manual potentiometers with factory-programmable, field-updatable bias that maintains stability across temperature and lifetime. |
Use Scenario: Calibrating zero-offset and span of pressure, temperature, or optical sensors in automotive HVAC and industrial process control. IC Role / Device Role / Timing Role: Precision variable resistance in Wheatstone bridge or op-amp feedback networks; operates in static configuration. Use Value: Enables one-time factory calibration and periodic field recalibration via I²C-reducing test time and eliminating mechanical drift. |
| Gain Control in Signal Chains | Automotive Electronics Adjustment |
Use Scenario: Programmable gain setting in instrumentation amplifiers and ADC driver stages for medical and test equipment. IC Role / Device Role / Timing Role: Digitally adjustable feedback resistor determining closed-loop gain; updated only during configuration, not real-time. Use Value: Provides 128-step resolution with ±0.25 LSB INL-achieving better than 0.8% gain accuracy without laser trimming. |
Use Scenario: Adjusting brightness of interior lighting, mirror heating profiles, or seat position feedback in passenger vehicles. IC Role / Device Role / Timing Role: Nonvolatile-equivalent trim component retaining settings across ignition cycles via constant VDD bias. Use Value: Delivers automotive-grade reliability (–40°C to +125°C) and 0.9 µA standby current-enabling always-on calibration memory without EEPROM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital resistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5245BKS10-RL7 | Same 10 kΩ SC70-6 digital resistor but with different tape-and-reel packaging (no -R2 suffix); identical electrical specs and pinout. | No functional difference-only reel quantity and moisture sensitivity level vary; suitable for same PCB designs and firmware. | Select AD5245BKS10-RL7 for high-volume automated assembly where reel size and MSL rating align with production requirements. |
| MCP4017T-103E/OT | 64-position I²C digital potentiometer with 10 kΩ end-to-end resistance; higher 150 ppm/°C tempco and 2.5 µA typical IDD at 3.3 V. | Limited resolution and higher drift reduce suitability for precision sensor calibration; acceptable for basic LED dimming or audio volume control. | Choose MCP4017T-103E/OT only when lower cost outweighs need for 128-step linearity and 45 ppm/°C stability. |
Compared with AD5246BKS10-R2, AD5245BKS10-RL7 offers identical performance in alternate packaging, while MCP4017T-103E/OT trades resolution and thermal stability for cost-making AD5246BKS10-R2 optimal for high-accuracy, temperature-critical analog trimming.
Availability
AD5246BKS10-R2 is available at Aetrix Electronics and suitable for RF amplifier biasing, transducer sensor calibration, and automotive electronics adjustment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD5246BKS10-R2 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 industrial, automotive, communications, and healthcare markets since 1965.
The AD5246 belongs to Analog Devices' precision digital resistor product line, engineered specifically for replacing mechanical potentiometers in space-constrained, high-stability applications demanding low tempco and ultra-low power.
FAQ
What is the end-to-end resistance value of the AD5246BKS10-R2?
The AD5246BKS10-R2 has a nominal end-to-end resistance of 10 kΩ between terminals A and B. This value is fixed per device variant and confirmed in the datasheet's Electrical Characteristics tables for the 10 kΩ version. The "10" in the part number explicitly denotes this resistance value, and it remains stable across temperature with a 45 ppm/°C coefficient.
Does the AD5246BKS10-R2 retain its wiper setting after power cycling?
No, the AD5246BKS10-R2 does not have nonvolatile memory and resets to midscale (code 0x40) on each power-up. However, its 0.9 µA typical supply current at 3.3 V enables practical constant-bias operation-allowing retention of the last programmed value as long as VDD remains applied, even from small batteries.
What is the maximum operating voltage on the W and B terminals of the AD5246BKS10-R2?
The W and B terminals of the AD5246BKS10-R2 must remain within the VDD-to-GND voltage range. Exceeding these bounds forward-biases internal clamping diodes, risking unintended current paths or latch-up. The Absolute Maximum Ratings specify terminal voltage as "VDD" relative to GND, confirming strict rail-to-rail compliance without external protection needed.
Can the AD5246BKS10-R2 be used in rheostat mode only, or does it support potentiometer configuration?
The AD5246BKS10-R2 is specified and characterized for rheostat mode (two-terminal use: W and B, with A left open or tied to B). While A can be connected externally to form a 3-terminal potentiometer, the datasheet does not guarantee performance in that configuration-linearity, tempco, and wiper resistance specs apply strictly to rheostat operation as tested and documented for AD5246BKS10-R2.
What I²C address does the AD5246BKS10-R2 use, and is it configurable?
The AD5246BKS10-R2 uses a fixed 7-bit I²C slave address of 0x5C (1011100b), with the R/W bit appended to form the full 8-bit byte. This address is hardwired and not configurable via pins or internal registers-ensuring deterministic bus behavior but requiring address uniqueness in multi-device systems.
AD5246BKS10-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Rheostat
- Number of Circuits:
- 1
- Number of Taps:
- 128
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SC-70-6
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 150
AD5246BKS10-R2 FAQ
1.How can I place an order for AD5246BKS10-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5246BKS10-R2 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 AD5246BKS10-R2 reliable?
The price and inventory of AD5246BKS10-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5246BKS10-R2 is usually 5 days.
3.What payment methods are accepted for AD5246BKS10-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5246BKS10-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5246BKS10-R2?
AD5246BKS10-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5246BKS10-R2 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 AD5246BKS10-R2?
For technical support, including AD5246BKS10-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5246BKS10-R2 requirements.
6.How does Aetrix verify that AD5246BKS10-R2 is sourced from the original manufacturer or authorized distributors?
All AD5246BKS10-R2 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 AD5246BKS10-R2 meets industry standards.
7.What is the process for return or replacement of AD5246BKS10-R2?
All AD5246BKS10-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD5246BKS10-R2, 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 AD5246BKS10-R2 part is unused and in its original packaging.
Return procedure for AD5246BKS10-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5246BKS10-R2 Tags
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MCP4018T-103E/LT
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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MCP4018T-104E/LT
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MCP4017T-503E/LT
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MCP4018T-502E/LT
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MCP4017T-103E/LT
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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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