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Analog Devices Inc. AD5165BUJZ100-R2
- Part No.:
- AD5165BUJZ100-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
AD5165BUJZ100-R2.pdf
- Description:
- IC DGT POT 100KOHM 256TAP TSOT23
- Quantity:
- Payment:
- Shipping:
Inventory:669
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Product details
Overview
AD5165BUJZ100-R2 from Analog Devices is a 256-position, ultralow-power digital potentiometer with 100 kΩ end-to-end resistance, 1.8 V logic-level compatibility, and 35 ppm/°C temperature coefficient. It operates from 2.7 V to 5.5 V supply, consumes only 50 nA typical standby current, and is housed in an 8-lead TSOT-8 package (2.9 mm × 2.8 mm). It serves as a solid-state replacement for mechanical potentiometers in precision calibration and battery-powered adjustment circuits.
For engineers reviewing the AD5165BUJZ100-R2 datasheet, AD5165BUJZ100-R2 pinout, AD5165BUJZ100-R2 application, or AD5165BUJZ100-R2 equivalent, this page delivers verified technical context, real-world use cases, pin-level design meaning, and validated alternative options - all grounded in the official Rev. 0 datasheet and Analog Devices' product documentation.
Technical Context
The AD5165BUJZ100-R2 implements a segmented thin-film resistor ladder with 256 discrete tap points, enabling precise rheostat or potentiometer divider operation. Its wiper register accepts 8-bit serial data via a 3-wire interface (CS, CLK, SDI), where CS is active-high and data loads MSB-first on CLK rising edges.
It supports two primary modes: rheostat mode (A–W or W–B variable resistance) with ±0.25 LSB integral nonlinearity and 35 ppm/°C tempco, and potentiometer divider mode (A–W–B voltage division) with 15 ppm/°C output tempco and ±0.3 LSB INL. Terminal voltage range spans GND to VDD, with no polarity restrictions between A, B, and W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 100 kΩ - defines full-scale rheostat range and sets voltage divider scaling factor |
| Resolution | 8-bit (256 positions) - enables 0.39% step resolution in rheostat mode and ~19.5 mV/LSB at 5 V input |
| Logic high voltage | 1.8 V min - allows direct interfacing with 1.8 V microcontrollers without level shifting |
| Standby supply current | 50 nA typical - extends battery life in always-on remote sensors and portable meters |
| Temperature coefficient | 35 ppm/°C (rheostat), 15 ppm/°C (divider) - ensures stable resistance ratio over −40°C to +125°C |
| Bandwidth | 55 kHz at mid-code - supports dynamic gain control in low-frequency analog signal paths |
| Wiper resistance | 50 Ω typical (VDD = 5.5 V) - contributes fixed offset in low-resistance settings; limits zero-scale current to 20 mA pulse max |
Pinout & Package
AD5165BUJZ100-R2 is packaged in an 8-lead TSOT-8 (UJ-8) outline per JEDEC MO-193BA, measuring 2.9 mm × 2.8 mm × 0.9 mm, with gull-wing leads and Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (W) | Wiper terminal | Output node for variable resistance (W–B or W–A) or voltage divider tap; voltage must stay within GND–VDD |
| 2 (VDD) | Positive power supply | Primary supply rail (2.7–5.5 V); powers internal logic and resistor ladder; must be powered before A/B/W terminals |
| 3 (GND) | Digital ground | Reference for logic inputs and internal circuitry; should be tied to system analog ground at single point |
| 4 (CLK) | Serial clock input | Positive-edge-triggered; clocks 8-bit data into shift register; requires clean transitions to prevent misreads |
| 5 (SDI) | Serial data input | MSB-first 8-bit command stream; accepts RDAC latch codes; compatible with standard CMOS logic families |
| 6 (CS) | Chip select input | Active-high enable; falling edge latches data into wiper register; inverted logic reduces idle-state power vs. AD5160 |
| 7 (B) | Resistor endpoint B | Fixed terminal for rheostat (W–B) or divider (A–W–B); may float or connect to GND, VDD, or signal |
| 8 (A) | Resistor endpoint A | Fixed terminal for rheostat (A–W) or divider (A–W–B); polarity unrestricted relative to B or W |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow standby power | 50 nA typical IDD enables >10-year battery life in coin-cell-powered utility meters |
| 1.8 V logic compatibility | VIH = 1.8 V min allows direct connection to 1.8 V I/O domains without external level translators |
| Wide operating temperature | −40°C to +125°C rating supports under-hood automotive and industrial sensor calibration |
| Low tempco resistor ladder | 35 ppm/°C (rheostat) and 15 ppm/°C (divider) ensure <0.4% resistance drift over full temperature range |
| Simple 3-wire interface | Inverted CS minimizes leakage during idle; eliminates need for pull-downs or extra glue logic |
Applications
| Battery-Operated Electronics Adjustment | Remote Utilities Meter Calibration |
|---|---|
Use Scenario: Fine-tuning reference voltage or sensor bias in handheld multimeters and portable gas detectors. IC Role / Device Role / Timing Role: Digital potentiometer providing programmable resistance for offset/gain trimming in analog front-ends. Use Value: Eliminates manual calibration screws; enables factory and field recalibration via firmware, reducing service costs and improving repeatability. |
Use Scenario: Adjusting metering accuracy in smart water/gas meters deployed in unattended outdoor locations. IC Role / Device Role / Timing Role: Solid-state rheostat replacing mechanical trimmers subject to vibration-induced drift and corrosion. Use Value: 125°C rating and 50 nA standby current extend operational lifetime beyond 15 years in sealed enclosures. |
| Mechanical Potentiometer Replacement | Transducer Circuit Adjustment |
Use Scenario: Upgrading legacy industrial control panels with digital setpoint adjustment and EEPROM-less nonvolatile wiper position retention. IC Role / Device Role / Timing Role: Direct drop-in substitute for 100 kΩ mechanical pots in panel-mounted analog dials and knobs. Use Value: No wear-out mechanism; immune to dust, moisture, and ESD; maintains linearity over >1 million adjustments. |
Use Scenario: Calibrating bridge-based pressure or load-cell amplifiers in medical infusion pumps and test equipment. IC Role / Device Role / Timing Role: Precision voltage divider setting excitation or feedback ratios in instrumentation-grade signal chains. Use Value: 15 ppm/°C divider tempco ensures <0.2% full-scale error drift across operating temperature, meeting Class 0.1 accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5160BRJZ100-R2 | Same 100 kΩ, 256-position architecture but uses standard (non-inverted) CS; higher 1 µA typical IDD | Lacks 1.8 V logic compatibility; VIH = 2.0 V min; less suitable for ultra-low-power 1.8 V systems | Select AD5160BRJZ100-R2 only when existing SPI infrastructure requires standard CS polarity and power budget permits 20× higher standby current. |
| MCP41010-I/P | 10 kΩ end-to-end resistance; 256-position; SPI-compatible interface; 1.8–5.5 V supply; 1 µA typical IDD | Lower resistance value limits voltage divider headroom; not rated for 125°C operation (only −40°C to +85°C) | Choose MCP41010-I/P for cost-sensitive consumer applications below 85°C where 10 kΩ impedance matches downstream op-amp input requirements. |
Compared with AD5165BUJZ100-R2, AD5160BRJZ100-R2 trades ultralow power for legacy interface compatibility, while MCP41010-I/P offers lower cost and wider voltage support but sacrifices high-temp reliability and 1.8 V logic margin - making AD5165BUJZ100-R2 optimal for long-life, wide-temperature, battery-critical designs.
Availability
AD5165BUJZ100-R2 is available at Aetrix Electronics and suitable for battery-operated electronics adjustment, remote utilities meter calibration, and transducer circuit adjustment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AD5165BUJZ100-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, headquartered in Norwood, MA, with deep expertise in precision linear products and data conversion.
The AD5165BUJZ100-R2 belongs to Analog Devices' RDAC (resistor digital-to-analog converter) family, engineered specifically for low-power, high-stability electronic trimming in portable, automotive, and industrial instrumentation.
FAQ
What is the maximum voltage allowed across terminals A, B, and W of the AD5165BUJZ100-R2?
The AD5165BUJZ100-R2 permits terminal voltages from GND to VDD across A, B, and W - with no polarity restrictions between them. For example, if VDD = 5 V, VA may be 5 V while VB = 0 V or VA = 0 V while VB = 5 V. Exceeding GND or VDD risks forward-biasing internal ESD diodes and damaging the device. The absolute maximum rating is −0.3 V to +7 V relative to GND, but functional operation is strictly limited to the VDD–GND window.
Does the AD5165BUJZ100-R2 retain its wiper position after power cycling?
No, the AD5165BUJZ100-R2 does not include nonvolatile memory and resets to midscale (code 0x80) on each power-up. This behavior is explicitly documented in the Evaluation Board section of the datasheet. To maintain a specific setting across power cycles, external microcontroller firmware must reprogram the AD5165BUJZ100-R2 during initialization using its 3-wire interface.
Can the AD5165BUJZ100-R2 be used in potentiometer divider mode with bipolar signals?
Yes - the AD5165BUJZ100-R2 supports bipolar operation in potentiometer divider mode: VA, VB, and VW may swing independently between GND and VDD, with no requirement that VA > VB. For instance, VA = 0 V and VB = 5 V yields an inverted output at VW. However, the voltage at any terminal must remain within the GND–VDD range; applying −2 V to A while VDD = 5 V violates absolute maximum ratings and risks damage.
What is the wiper resistance specification for the AD5165BUJZ100-R2, and how does it affect zero-scale performance?
The AD5165BUJZ100-R2 has a typical wiper resistance (RW) of 50 Ω at VDD = 5.5 V and 85 Ω at VDD = 2.7 V. At zero-scale (code 0x00), the measured resistance between W and B is 100 Ω - composed of two 50 Ω switch resistances in series. This finite wiper resistance introduces a minimum residual resistance and limits safe pulsed current to ±20 mA; exceeding this risks contact degradation. Designers must account for RW in precision low-ohm rheostat applications.
Is the AD5165BUJZ100-R2 pin-to-pin compatible with other devices in the AD516x family?
Yes - the AD5165BUJZ100-R2 is pin-to-pin compatible with the AD5160 in the same TSOT-8 package, differing only in chip-select polarity (AD5165 uses inverted CS, AD5160 uses standard CS). This allows direct hardware substitution when firmware accommodates the CS inversion timing. Compatibility is confirmed in the General Overview section of the datasheet and applies strictly to UJ-8 packaged variants with identical 100 kΩ resistance.
AD5165BUJZ100-R2 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:
- 256
- Resistance (Ohms):
- 100k
- Interface:
- SPI
- 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 ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 160
AD5165BUJZ100-R2 FAQ
1.How can I place an order for AD5165BUJZ100-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5165BUJZ100-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 AD5165BUJZ100-R2 reliable?
The price and inventory of AD5165BUJZ100-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5165BUJZ100-R2 is usually 5 days.
3.What payment methods are accepted for AD5165BUJZ100-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5165BUJZ100-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5165BUJZ100-R2?
AD5165BUJZ100-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5165BUJZ100-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 AD5165BUJZ100-R2?
For technical support, including AD5165BUJZ100-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5165BUJZ100-R2 requirements.
6.How does Aetrix verify that AD5165BUJZ100-R2 is sourced from the original manufacturer or authorized distributors?
All AD5165BUJZ100-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 AD5165BUJZ100-R2 meets industry standards.
7.What is the process for return or replacement of AD5165BUJZ100-R2?
All AD5165BUJZ100-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD5165BUJZ100-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 AD5165BUJZ100-R2 part is unused and in its original packaging.
Return procedure for AD5165BUJZ100-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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