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Analog Devices Inc. AD5260BRUZ20-RL7
- Part No.:
- AD5260BRUZ20-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5260BRUZ20-RL7.pdf
- Description:
- IC DGT POT 20KOHM 256TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,977
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Product details
Overview
AD5260BRUZ20-RL7 from Analog Devices is a single-channel, 256-position digital potentiometer with 20 kΩ end-to-end resistance, 35 ppm/°C temperature coefficient, and 15 V single-supply operation. It replaces mechanical potentiometers in precision gain/offset adjustment circuits and supports SPI-compatible 4-wire serial interface with midscale power-on reset.
For engineers reviewing the AD5260BRUZ20-RL7 datasheet, AD5260BRUZ20-RL7 pinout, AD5260BRUZ20-RL7 application, or AD5260BRUZ20-RL7 equivalent, this page delivers verified specifications, terminal roles, real-world use cases, and validated alternative options for industrial instrumentation and programmable analog signal conditioning.
Technical Context
The AD5260BRUZ20-RL7 implements a digitally controlled variable resistor (RDAC) using a segmented resistor ladder with wiper contact driven by an 8-bit SPI register. Its architecture enables linear resistance interpolation between A and B terminals, with guaranteed monotonicity and ±¼ LSB differential nonlinearity in rheostat mode.
It operates from 4.5 V to 15 V single supply or ±4.5 V to ±5.5 V dual supply, features active-low SHDN that opens A-terminal and connects W to B, and includes PR pin for hardware-initiated midscale preset (0x80). The SDO pin supports daisy-chaining without external decoding logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit (256 positions), enabling precise 0.39% step resolution across full 20 kΩ range |
| End-to-End Resistance | 20 kΩ ±30%, fixed nominal value defining max A–B resistance and current-handling limits |
| Tempco | 35 ppm/°C (typ), ensuring <±0.3% resistance drift over −40°C to +85°C industrial range |
| Supply Range | +4.5 V to +16.5 V (single), or ±4.5 V to ±5.5 V (dual), supporting high-voltage analog signal paths |
| Interface | SPI-compatible 4-wire (CS, CLK, SDI, SDO), with 25 MHz max clock and 5 ns timing margins |
| Wiper Resistance | 60–150 Ω (typ), directly impacting insertion loss and THD in voltage-divider configurations |
| Bandwidth | 310 kHz (−3 dB, RAB = 20 kΩ), suitable for audio-level and DC-coupled control loops |
Pinout & Package
AD5260BRUZ20-RL7 is housed in a 14-lead thin shrink small-outline package (TSSOP), pin-compatible with industry-standard 14-TSSOP footprints and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Fixed resistor terminal A | One end of 20 kΩ resistor ladder; voltage reference point in potentiometer divider mode |
| W | Wiper contact | Programmable tap point; output node for variable resistance between A and B |
| B | Fixed resistor terminal B | Second end of 20 kΩ ladder; common return in rheostat mode (A–W or B–W) |
| VDD | Positive supply rail | Supports up to +15 V; defines upper analog voltage limit and power dissipation ceiling |
| SHDN | Active-low shutdown control | Puts A terminal in open-circuit state and connects W to B, reducing current to ≤5 μA |
| CLK | Serial clock input | Positive-edge-triggered; clocks 8-bit data into shift register at up to 25 MHz |
| SDI | Serial data input | MSB-first 8-bit command stream; loads RDAC latch when CS transitions high |
| CS | Chip select | Active-low enable; rising edge latches serial register contents into RDAC latch |
| PR | Active-low preset | Forces wiper to midscale (0x80) regardless of register state; used for fault recovery |
| GND | Analog/digital ground | Common reference for VSS, VL, and all analog terminals; must be low-impedance |
| VSS | Negative supply rail | Supports 0 V or −5 V; sets lower analog voltage bound and enables bipolar operation |
| VL | Logic supply voltage | 2.7–5.5 V; must match host controller logic level to ensure valid VIH/VIL thresholds |
| SDO | Serial data output | Open-drain; enables daisy-chain configuration without additional decode logic |
Key Features
| Feature | Design Value |
|---|---|
| Single-channel 256-step RDAC | Enables discrete, repeatable resistance tuning without mechanical wear or drift |
| 15 V absolute max supply rating | Supports direct integration into industrial ±10 V signal chains without level-shifting |
| 35 ppm/°C tempco | Reduces calibration burden in temperature-varying environments vs. standard digital pots |
| Hardware midscale preset (PR) | Guarantees known startup state after brownout or system reset-no firmware dependency |
| Shutdown mode (SHDN) | Reduces system standby power by opening A-terminal and isolating upstream circuitry |
Applications
| Instrumentation Gain Control | Stereo Audio Level Adjustment |
|---|---|
|
Use Scenario: Precision op-amp gain setting in automated test equipment where calibration stability over temperature is critical. IC Role / Device Role / Timing Role: Configurable feedback resistor in non-inverting amplifier topology; wiper position sets closed-loop gain. Use Value: 35 ppm/°C tempco ensures <±0.1% gain error over −40°C to +85°C, eliminating recalibration cycles. |
Use Scenario: Independent left/right channel volume control in professional audio mixing consoles. IC Role / Device Role / Timing Role: Dual-rail-compatible rheostat replacing dual-gang mechanical pots; each channel controlled via separate SPI writes. Use Value: 310 kHz bandwidth preserves audio fidelity up to 20 kHz with <0.014% THD at 1 kHz. |
| Programmable Voltage Reference | Line Impedance Matching |
|
Use Scenario: Adjustable reference voltage generation for ADC/DAC biasing in sensor signal conditioning modules. IC Role / Device Role / Timing Role: Potentiometer divider between stable VDD and GND; VW provides programmable 0–VDD output. Use Value: 5 ppm/°C voltage-divider tempco ensures reference stability independent of resistance drift. |
Use Scenario: Dynamic termination resistance tuning on high-speed communication lines (e.g., RS-485, CAN) to compensate for PCB trace variations. IC Role / Device Role / Timing Role: Programmable series resistor between driver output and transmission line; adjusts reflection coefficient. Use Value: 20 kΩ range covers typical 120 Ω to 1 kΩ termination needs; ±5 mA continuous current rating supports 5 V bus levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5260BRUZ50-RL7 | Same architecture, 50 kΩ end-to-end resistance, identical tempco and interface | Better suited for higher-impedance filter design and lower-current bias networks | Select when circuit requires >20 kΩ resistance range while retaining identical timing, layout, and firmware |
| MAX5487ETE+T | 256-tap, 100 kΩ, 5 V only supply, I²C interface, no PR or SHDN pins | Limited to low-voltage systems; lacks hardware preset and shutdown capability | Choose only for cost-sensitive 5 V-only designs where SPI is unavailable and midscale recovery is software-managed |
Compared with AD5260BRUZ20-RL7, the AD5260BRUZ50-RL7 offers higher resistance scaling for reduced current draw in bias networks, while the MAX5487ETE+T trades voltage flexibility and hardware controls for I²C simplicity in low-power embedded systems.
Availability
AD5260BRUZ20-RL7 is available at Aetrix Electronics and suitable for industrial instrumentation, audio signal processing, and programmable analog front-ends requiring stable component supply, long-term calibration retention, and high-voltage compatibility.
Supply support for AD5260BRUZ20-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, serving precision instrumentation, industrial automation, and communications markets since 1965.
The AD5260 is part of Analog Devices' precision digital potentiometer family, engineered for high-voltage operation, low tempco, and robust SPI interfacing in mission-critical analog control applications.
FAQ
What is the maximum supply voltage rating for AD5260BRUZ20-RL7?
The AD5260BRUZ20-RL7 supports up to +16.5 V on VDD (single supply) and ±5.5 V on VDD/VSS (dual supply), with absolute maximum ratings of −0.3 V to +17 V on VDD and 0 V to −7 V on VSS. Exceeding these violates Absolute Maximum Ratings and risks permanent damage. Operation at 15 V is fully characterized and supported across the full −40°C to +85°C range.
Does AD5260BRUZ20-RL7 support true bipolar operation?
Yes, AD5260BRUZ20-RL7 supports true bipolar analog operation when powered from dual supplies (e.g., VDD = +5 V, VSS = −5 V). Its A, B, and W terminals tolerate voltages from VSS to VDD, enabling AC-coupled signal paths and symmetric voltage swing around ground. This is confirmed in Table 1 (Resistor Terminals Voltage Range) and Figure 19 (Zero-Scale Error vs. Temperature under ±5 V conditions).
How does the PR (Preset) pin function in AD5260BRUZ20-RL7?
The PR pin is an active-low hardware control that forces the wiper to midscale (0x80) regardless of the current RDAC latch content. A minimum 50 ns low pulse resets the wiper position instantly, providing deterministic recovery from fault conditions or power glitches. Unlike software reset, PR operates independently of SPI activity and VL supply state, making it essential for safety-critical analog subsystems.
Can AD5260BRUZ20-RL7 be used in rheostat mode with only two terminals?
Yes, AD5260BRUZ20-RL7 supports rheostat mode using either A–W or B–W connections, with the unused terminal left floating or tied to W. In this configuration, resistance varies from near-zero (wiper at terminal) to 20 kΩ (wiper at opposite end), with 60–150 Ω wiper resistance contributing directly to total path resistance. Full-scale error is specified at ±2 LSB in rheostat mode per Table 1.
What is the guaranteed monotonicity performance of AD5260BRUZ20-RL7?
AD5260BRUZ20-RL7 guarantees monotonic operation with ±¼ LSB differential nonlinearity (R-DNL) in rheostat mode and ±¼ LSB DNL in potentiometer divider mode. This ensures that every successive code increment produces a strictly increasing (or decreasing) resistance value-critical for closed-loop control systems where non-monotonic steps could cause instability or oscillation.
AD5260BRUZ20-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 20k
- Interface:
- SPI
- Memory Type:
- Volatile
- Voltage - Supply:
- 4.5V ~ 16.5V, ±5V
- Features:
- Cascade Pin
- Tolerance:
- ±30%
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 60
AD5260BRUZ20-RL7 FAQ
1.How can I place an order for AD5260BRUZ20-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5260BRUZ20-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 AD5260BRUZ20-RL7 reliable?
The price and inventory of AD5260BRUZ20-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5260BRUZ20-RL7 is usually 5 days.
3.What payment methods are accepted for AD5260BRUZ20-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5260BRUZ20-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5260BRUZ20-RL7?
AD5260BRUZ20-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5260BRUZ20-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 AD5260BRUZ20-RL7?
For technical support, including AD5260BRUZ20-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5260BRUZ20-RL7 requirements.
6.How does Aetrix verify that AD5260BRUZ20-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5260BRUZ20-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 AD5260BRUZ20-RL7 meets industry standards.
7.What is the process for return or replacement of AD5260BRUZ20-RL7?
All AD5260BRUZ20-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5260BRUZ20-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 AD5260BRUZ20-RL7 part is unused and in its original packaging.
Return procedure for AD5260BRUZ20-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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