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Analog Devices Inc. AD5247BKS10-R2
- Part No.:
- AD5247BKS10-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD5247BKS10-R2.pdf
- Description:
- IC POT DGTL 10K 128POS SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,452
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Product details
Overview
AD5247BKS10-R2 from Analog Devices is a 128-position I²C-compatible digital potentiometer in SC70-6 package, with 10 kΩ end-to-end resistance, ±0.25 LSB integral nonlinearity (potentiometer mode), and 45 ppm/°C temperature coefficient. It operates from 2.7 V to 5.5 V, consumes 3 μA typical supply current, and powers on at midscale - used for precision gain control and sensor biasing in industrial and automotive systems.
For engineers reviewing the AD5247BKS10-R2 datasheet, AD5247BKS10-R2 pinout, AD5247BKS10-R2 application, or AD5247BKS10-R2 equivalent, key selection criteria include I²C slave address compatibility (0x5E), wiper resistance ≤300 Ω at code 0x00, guaranteed monotonicity, and operation across –40°C to +125°C.
Technical Context
The AD5247BKS10-R2 implements a 7-bit RDAC ladder with fixed 10 kΩ end-to-end resistance and hard-coded I²C slave address 0x5E (A6–A0 = 0101110). Its wiper register supports full read/write access, enabling dynamic reconfiguration without external memory. Power-on reset defaults to code 0x40 (midscale), eliminating startup uncertainty in closed-loop systems.
In potentiometer divider mode, output voltage follows VW = VA × D/128 (D = decimal code), with voltage-divider temperature coefficient of 15 ppm/°C - significantly lower than rheostat-mode drift. The device guarantees monotonicity per Table 2 (±0.25 LSB INL, ±0.1 LSB DNL) and supports bidirectional terminal voltages between GND and VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10 kΩ ±20% - defines maximum programmable resistance range in rheostat mode and sets voltage division ratio in potentiometer mode. |
| Wiper resistance (code 0x00) | ≤300 Ω - limits minimum achievable resistance between W and B; impacts zero-scale error and current handling in low-resistance configurations. |
| Integral nonlinearity (INL) | ±0.25 LSB (potentiometer mode) - ensures <0.2% full-scale voltage error across all 128 codes, critical for precision analog feedback paths. |
| I²C clock frequency | Up to 400 kHz - compatible with standard-mode I²C buses; enables fast wiper updates (<2 μs settling) without requiring high-speed controller support. |
| Supply current | 3 μA typical at 25°C - enables integration into always-on battery-powered nodes (e.g., sensor transmitters) with multi-year runtime. |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and harsh-environment instrumentation. |
| Temperature coefficient | 45 ppm/°C (rheostat), 15 ppm/°C (divider) - enables stable gain/bias over temperature; divider mode reduces drift by factor of 3 via ratiometric operation. |
Pinout & Package
AD5247BKS10-R2 uses an ultracompact SC70-6 package (2.0 mm × 2.1 mm × 0.9 mm), optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive power supply input | Accepts 2.7 V to 5.5 V; powers internal logic and RDAC switches; must be bypassed with 0.1 μF ceramic capacitor near pin. |
| GND (Pin 2) | Digital ground reference and B-terminal connection | Serves as return path for digital interface and establishes B-terminal voltage; no separate B pin - B is internally tied to GND. |
| SCL (Pin 3) | I²C serial clock input | Positive-edge-triggered; requires external pull-up; supports standard-mode (400 kHz) timing per Table 3. |
| SDA (Pin 4) | I²C bidirectional data line | Open-drain output with internal weak pull-down; shares bus with other I²C devices; requires external pull-up resistor. |
| W (Pin 5) | Wiper terminal | Provides variable resistance node between A and B; output impedance varies with code; supports ±5 mA continuous current. |
| A (Pin 6) | Fixed resistor terminal A | One end of 10 kΩ resistor string; voltage range limited to GND ≤ VA ≤ VDD; polarity unrestricted relative to W or B. |
Key Features
| Feature | Design Value |
|---|---|
| Power-on preset to midscale | Automatically initializes wiper to code 0x40 at power-up, eliminating need for host MCU initialization sequence in safety-critical or fail-safe designs. |
| I²C full read/write capability | Enables real-time monitoring of wiper position and dynamic recalibration - essential for closed-loop compensation in amplifier biasing and sensor trimming. |
| Guaranteed monotonicity | Ensures output resistance or voltage increases strictly with code value (no step reversals), preventing instability in feedback-controlled circuits. |
| Low 15 ppm/°C divider tempco | Reduces temperature-induced gain drift in voltage-divider applications (e.g., ADC reference scaling), outperforming discrete resistor networks. |
| SC70-6 footprint | Enables placement in <3 mm² board area - ideal for compact modules like automotive seat controllers, portable medical sensors, and IoT edge nodes. |
Applications
| RF Amplifier Biasing | LCD Brightness Control |
|---|---|
Use Scenario: Setting precise DC bias current for GaAs FET or LDMOS power amplifiers in cellular base station front-ends. IC Role / Device Role / Timing Role: Digital potentiometer configured as rheostat between amplifier gate and ground, adjusting quiescent current via I²C commands from baseband processor. Use Value: Enables factory calibration and field recalibration without hardware change; 10 kΩ range and 128-step resolution support fine-tuning within ±1% target current tolerance. |
Use Scenario: Dynamically adjusting backlight LED current in automotive instrument clusters operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Rheostat controlling current-limiting resistor in constant-current LED driver; wiper updated via microcontroller I²C during dimming transitions. Use Value: Maintains consistent brightness vs. temperature due to 15 ppm/°C divider tempco; SC70-6 size fits tight cluster PCB layouts. |
| Transducer Offset Adjustment | Industrial Sensor Signal Conditioning |
Use Scenario: Nulling thermal offset in bridge-based pressure sensors used in HVAC differential pressure monitoring. IC Role / Device Role / Timing Role: Potentiometer divider injecting calibrated offset voltage into op-amp summing junction to cancel sensor zero-point drift. Use Value: 45 ppm/°C rheostat tempco and ±0.25 LSB INL ensure offset remains stable within ±0.1% FS over temperature - exceeding mechanical potentiometer performance. |
Use Scenario: Configuring gain of instrumentation amplifier for 4–20 mA loop-powered temperature transmitters. IC Role / Device Role / Timing Role: Precision resistor network element in programmable gain stage; wiper position set once at commissioning and retained across power cycles. Use Value: 10 kΩ end-to-end resistance matches standard PGA feedback ratios; guaranteed monotonicity prevents gain discontinuities during calibration sweeps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5248BKS10-RL7 | Same 10 kΩ SC70-6 digital potentiometer but with dual-channel architecture (two independent 128-step RDACs); higher IDD (6 μA typical). | Supports simultaneous adjustment of two signal paths (e.g., differential amplifier gain/offset), whereas AD5247BKS10-R2 is single-channel only. | Select AD5248BKS10-RL7 when dual-rheostat functionality is required; otherwise AD5247BKS10-R2 offers lower cost and power for single-path use cases. |
| MCP4017T-103I/OT | 64-position I²C digital potentiometer in SOT-23-6; 10 kΩ end-to-end resistance; 100 ppm/°C tempco; no power-on midscale default. | Limited resolution (64 vs. 128 steps) and higher tempco reduce accuracy in precision sensor trimming; lacks guaranteed monotonicity spec. | Choose MCP4017T-103I/OT only for cost-sensitive, non-critical biasing where 128-step resolution and 45 ppm/°C stability are not required. |
Compared with AD5248BKS10-RL7 and MCP4017T-103I/OT, AD5247BKS10-R2 delivers optimal balance of resolution, temperature stability, and single-channel efficiency - making it preferred for high-accuracy, space-constrained, single-adjustment applications like RF bias and LCD dimming.
Availability
AD5247BKS10-R2 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive display dimming, and RF power amplifier biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD5247BKS10-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD5247 product line delivers ultra-compact, temperature-stable digital potentiometers for replacing mechanical trimmers in precision analog signal conditioning - targeting automotive, industrial, and medical applications demanding reliability across –40°C to +125°C.
FAQ
What is the I²C slave address of the AD5247BKS10-R2?
The AD5247BKS10-R2 has a hard-coded 7-bit I²C slave address of 0x5E (binary 0101110), as confirmed in Table 8 of the AD5247 Rev. B datasheet. This address applies specifically to the 10 kΩ and 100 kΩ variants, enabling up to three AD5247BKS10-R2 devices on a shared I²C bus without address conflict.
Does the AD5247BKS10-R2 retain its wiper setting after power cycling?
No - the AD5247BKS10-R2 does not have nonvolatile memory. Upon power-up, it automatically resets to midscale (code 0x40) per its power-on preset feature. To restore a specific setting, the host controller must write the desired code to the wiper register via I²C after each power cycle.
Can the AD5247BKS10-R2 be used in potentiometer divider mode with bipolar signals?
Yes - the AD5247BKS10-R2 allows voltage polarity reversal between terminals A, W, and B, as stated in the "Resistor Terminals" section (Table 1, Note 5). However, VA and VW must remain within GND to VDD; the device does not support true AC-coupled or negative-supply operation.
What is the maximum continuous current rating for the wiper terminal of the AD5247BKS10-R2?
The AD5247BKS10-R2 wiper terminal supports ±5 mA continuous current, as specified in the Absolute Maximum Ratings table (Table 4). Exceeding this may cause switch degradation; pulsed current up to ±20 mA is allowed only with strict duty-cycle and duration limits defined in the datasheet.
How does the AD5247BKS10-R2 achieve 15 ppm/°C temperature coefficient in divider mode?
The AD5247BKS10-R2 achieves 15 ppm/°C in potentiometer divider mode because output voltage depends on the *ratio* of RWA to RAB rather than absolute resistance values. Since both segments track similarly with temperature, the ratiometric effect reduces drift by ~3× compared to rheostat mode's 45 ppm/°C specification.
AD5247BKS10-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):
- 75
AD5247BKS10-R2 FAQ
1.How can I place an order for AD5247BKS10-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5247BKS10-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 AD5247BKS10-R2 reliable?
The price and inventory of AD5247BKS10-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5247BKS10-R2 is usually 5 days.
3.What payment methods are accepted for AD5247BKS10-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5247BKS10-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5247BKS10-R2?
AD5247BKS10-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5247BKS10-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 AD5247BKS10-R2?
For technical support, including AD5247BKS10-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5247BKS10-R2 requirements.
6.How does Aetrix verify that AD5247BKS10-R2 is sourced from the original manufacturer or authorized distributors?
All AD5247BKS10-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 AD5247BKS10-R2 meets industry standards.
7.What is the process for return or replacement of AD5247BKS10-R2?
All AD5247BKS10-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD5247BKS10-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 AD5247BKS10-R2 part is unused and in its original packaging.
Return procedure for AD5247BKS10-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5247BKS10-R2 Tags
-
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
Microchip Technology
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MCP4021T-202E/SN
Microchip Technology
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MCP4023T-103E/CH
Microchip Technology
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MCP4022T-503E/CH
Microchip Technology
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MCP4551T-502E/MS
Microchip Technology
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