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Analog Devices Inc. AD5160BRJ100-R2
- Part No.:
- AD5160BRJ100-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- SOT-23-8
- Datasheet:
-
AD5160BRJ100-R2.pdf
- Description:
- IC POT DGTL 100K 256POS SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,140
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Product details
Overview
AD5160BRJ100-R2 from Analog Devices is a 256-position SPI-compatible digital potentiometer with 100 kΩ end-to-end resistance, compact SOT-23-8 package, single-supply operation (2.7 V to 5.5 V), and low temperature coefficient (45 ppm/°C). It replaces mechanical potentiometers in precision gain control, sensor offset adjustment, and RF amplifier biasing circuits.
For engineers reviewing the AD5160BRJ100-R2 datasheet, AD5160BRJ100-R2 pinout, AD5160BRJ100-R2 application, or AD5160BRJ100-R2 equivalent, key selection factors include guaranteed monotonicity (±1 LSB DNL), midscale power-on preset, 256-step resolution, and validated performance across –40°C to +125°C.
Technical Context
The AD5160BRJ100-R2 implements an 8-bit RDAC architecture with SPI-compatible 3-wire interface (CS, CLK, SDI), positive-edge clocked serial loading, and internal latch transfer on CS high transition. Its resistor ladder uses thin-film technology enabling 45 ppm/°C tempco in rheostat mode and 15 ppm/°C in voltage-divider mode.
It operates in two primary configurations: rheostat mode (A–W or B–W variable resistance) and potentiometer divider mode (A–W–B voltage division). Wiper resistance is 50–120 Ω, and terminal voltage range spans GND to VDD with no polarity restrictions between A, B, and W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit (256 positions): enables precise 0.39% step resolution over full scale |
| End-to-end resistance | 100 kΩ ±15% at 25°C: defines maximum programmable resistance range in rheostat mode |
| Supply voltage | 2.7 V to 5.5 V: supports direct interface with 3.3 V and 5 V logic systems without level shifting |
| Temperature coefficient | 45 ppm/°C (rheostat), 15 ppm/°C (divider): ensures stable resistance ratio over industrial temperature range |
| Supply current | 3 µA to 8 µA: enables battery-powered applications with multi-year runtime |
| Bandwidth | 40 kHz at 100 kΩ (code 0x80): sets usable AC signal frequency limit in gain-control loops |
| DNL / INL | ±1 LSB / ±2 LSB (100 kΩ version): guarantees monotonic response and predictable step-linearity |
| Power-on state | Midscale (code 0x80): eliminates undefined output at startup for fail-safe system initialization |
Pinout & Package
AD5160BRJ100-R2 is housed in a JEDEC-compliant SOT-23-8 package (2.9 mm × 3.0 mm × 1.3 mm), optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (W) | Wiper terminal | Output node for variable resistance (A–W or B–W) or voltage divider tap (A–W–B); 50–120 Ω switch resistance |
| 2 (VDD) | Positive supply | Accepts 2.7 V–5.5 V; powers internal logic and resistor ladder; must be powered before A/B/W terminals |
| 3 (GND) | Digital ground | Reference for SPI interface and internal logic; requires low-inductance connection to minimize ground bounce |
| 4 (CLK) | SPI clock input | Positive-edge triggered; supports up to 25 MHz; requires clean transitions to prevent data corruption |
| 5 (SDI) | SPI data input | MSB-first 8-bit serial word; accepts CMOS-level signals (VIH = 2.4 V min at 5 V, 2.1 V min at 3 V) |
| 6 (CS) | Chip select | Active-low enable; rising edge latches serial data into RDAC register; timing-critical for reliable programming |
| 7 (B) | Resistor terminal B | Fixed end of resistor string; used with W in rheostat mode or as ground reference in divider mode |
| 8 (A) | Resistor terminal A | Fixed end of resistor string; used with W in rheostat mode or as VIN reference in divider mode |
Key Features
| Feature | Design Value |
|---|---|
| SPI-compatible 3-wire interface | Enables direct connection to microcontrollers and FPGAs without protocol translation or additional glue logic |
| Guaranteed monotonic operation | Ensures predictable, non-decreasing resistance vs. code-critical for closed-loop control stability |
| Low 45 ppm/°C tempco (rheostat) | Reduces drift-induced gain error in temperature-varying environments like automotive engine control units |
| Midscale power-on preset | Eliminates need for host MCU initialization sequence during cold start, simplifying firmware design |
| Wide operating temperature | Validated from –40°C to +125°C: suitable for under-hood automotive, industrial motor drives, and outdoor sensor nodes |
| Compact SOT-23-8 footprint | Replaces through-hole mechanical pots with 85% smaller board area and automated assembly compatibility |
Applications
| Transducer Offset Calibration | RF Amplifier Bias Control |
|---|---|
Use Scenario: Adjusting zero-point output of pressure or temperature sensors before ADC digitization. IC Role / Device Role / Timing Role: Two-terminal rheostat (B–W) setting DC bias current into sensor bridge or op-amp input stage. Use Value: Achieves <±0.1% offset correction over temperature using 15 ppm/°C voltage-divider tempco and 256-step resolution. | Use Scenario: Dynamically tuning gate voltage of GaAs FETs in cellular base station power amplifiers. IC Role / Device Role / Timing Role: Three-terminal potentiometer (A–W–B) generating adjustable DC bias voltage referenced to RF ground. Use Value: Enables remote, software-controlled bias optimization without manual trimmer replacement or board rework. |
| Programmable Gain Amplifier | Industrial Sensor Signal Conditioning |
Use Scenario: Setting feedback resistance in op-amp inverting amplifier to achieve selectable gain states (e.g., 1×, 2×, 5×). IC Role / Device Role / Timing Role: Rheostat-mode (A–W) replacing fixed Rf resistor; A tied to op-amp output, W to inverting input. Use Value: Delivers stable 0.39% gain steps with <1 µs settling time, supporting real-time gain switching in data acquisition systems. | Use Scenario: Compensating for manufacturing tolerance and aging drift in chemical sensor analog front-ends. IC Role / Device Role / Timing Role: Potentiometer divider (A–W–B) providing calibrated reference voltage to sensor excitation circuitry. Use Value: Maintains <±0.05% reference accuracy over –40°C to +125°C via 15 ppm/°C ratio-matched tempco and monotonic linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5161BRJ100-R2 | Same 100 kΩ resistance and SOT-23-8 package, but I²C interface instead of SPI; 10-bit resolution (1024 steps) | Requires I²C master instead of SPI controller; higher resolution suits fine-tuning applications where step size <0.1% is critical | Select AD5161BRJ100-R2 when I²C infrastructure exists and finer granularity outweighs SPI compatibility needs. |
| MCP41100-I/P | 100 kΩ, 256-step, SPI interface, but PDIP-8 package; higher wiper resistance (120–200 Ω); wider supply range (2.7–5.5 V) | Larger through-hole footprint limits use in compact PCBs; higher wiper resistance degrades low-resistance rheostat accuracy below 200 Ω | Choose MCP41100-I/P only for legacy through-hole designs or prototyping where hand-soldering is preferred. |
Compared with AD5160BRJ100-R2, AD5161BRJ100-R2 offers higher resolution and I²C simplicity but sacrifices SPI-native integration, while MCP41100-I/P provides identical step count and interface but lacks the SOT-23-8 space efficiency and low-tempco performance critical for industrial-grade signal chains.
Availability
AD5160BRJ100-R2 is available at Aetrix Electronics and suitable for transducer calibration, RF bias control, programmable gain amplification, and industrial sensor conditioning requiring stable component supply across extended temperature ranges.
Supply support for AD5160BRJ100-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 precision instrumentation, industrial automation, and communications markets.
The AD5160 product line delivers digitally programmable resistors for replacing mechanical potentiometers in high-reliability, temperature-stable, and space-constrained applications-designed specifically for embedded sensor interfaces and precision analog control loops.
FAQ
What is the power-on behavior of the AD5160BRJ100-R2?
The AD5160BRJ100-R2 features a built-in power-on preset that automatically initializes the wiper to midscale (code 0x80) upon VDD application. This eliminates undefined output states at startup and removes the need for host MCU initialization commands, simplifying system boot sequences and improving fault recovery robustness in the AD5160BRJ100-R2.
Can the AD5160BRJ100-R2 operate with a 3.3 V supply?
Yes, the AD5160BRJ100-R2 is fully specified for 2.7 V to 5.5 V operation, including 3.3 V nominal supplies. Its digital inputs meet VIH ≥ 2.1 V and VIL ≤ 0.6 V at VDD = 3 V, ensuring reliable SPI communication with standard 3.3 V microcontrollers without level shifters-making the AD5160BRJ100-R2 ideal for mixed-voltage embedded systems.
What is the maximum current rating for the AD5160BRJ100-R2 terminals?
The AD5160BRJ100-R2 supports ±20 mA pulsed current and 0.48 mA continuous current at 100 kΩ setting. Exceeding these limits risks switch degradation due to localized heating. For continuous operation, keep terminal currents below 0.48 mA-verified by calculating I = VAB/RAB-to ensure long-term reliability of the AD5160BRJ100-R2.
How does temperature affect the AD5160BRJ100-R2's resistance accuracy?
In rheostat mode, the AD5160BRJ100-R2 exhibits 45 ppm/°C resistance temperature coefficient; in potentiometer divider mode, it achieves 15 ppm/°C due to ratio-matched tracking. Over –40°C to +125°C, this translates to ±0.5% max drift in rheostat use and ±0.17% in divider use-critical for maintaining gain or offset stability in the AD5160BRJ100-R2 across environmental extremes.
Is the AD5160BRJ100-R2 pin-compatible with other members of the AD5160 family?
Yes, all AD5160 variants-including AD5160BRJ50-R2 and AD5160BRJ10-R2-share identical SOT-23-8 pinout, SPI interface timing, and functional register map. Only end-to-end resistance differs (5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), allowing drop-in replacement during design iteration without layout changes-making the AD5160BRJ100-R2 interoperable within its family for rapid prototyping and BOM optimization.
AD5160BRJ100-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- -
- Configuration:
- -
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 100k
- Interface:
- -
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- -
- Temperature Coefficient (Typ):
- 45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-8
- Operating Temperature:
- -
- Resistance - Wiper (Ohms) (Typ):
- -
AD5160BRJ100-R2 FAQ
1.How can I place an order for AD5160BRJ100-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5160BRJ100-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 AD5160BRJ100-R2 reliable?
The price and inventory of AD5160BRJ100-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5160BRJ100-R2 is usually 5 days.
3.What payment methods are accepted for AD5160BRJ100-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5160BRJ100-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5160BRJ100-R2?
AD5160BRJ100-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5160BRJ100-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 AD5160BRJ100-R2?
For technical support, including AD5160BRJ100-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5160BRJ100-R2 requirements.
6.How does Aetrix verify that AD5160BRJ100-R2 is sourced from the original manufacturer or authorized distributors?
All AD5160BRJ100-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 AD5160BRJ100-R2 meets industry standards.
7.What is the process for return or replacement of AD5160BRJ100-R2?
All AD5160BRJ100-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD5160BRJ100-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 AD5160BRJ100-R2 part is unused and in its original packaging.
Return procedure for AD5160BRJ100-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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