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Analog Devices Inc. AD5262BRUZ20
- Part No.:
- AD5262BRUZ20
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5262BRUZ20.pdf
- Description:
- IC DGT POT 20KOHM 256TAP 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:813
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Product details
Overview
AD5262BRUZ20 from Analog Devices is a dual-channel, 256-position, 20 kΩ digital potentiometer operating from 5 V to 15 V single supply or ±5.5 V dual supply. It provides independently programmable rheostat/potentiometer functions with 35 ppm/°C temperature coefficient, SPI-compatible 4-wire interface, and midscale power-on reset-used for precision gain/offset trimming in industrial instrumentation and stereo audio level control.
For engineers reviewing the AD5262BRUZ20 datasheet, AD5262BRUZ20 pinout, AD5262BRUZ20 application, or AD5262BRUZ20 equivalent, key selection criteria include dual-channel independence, 20 kΩ end-to-end resistance, 15 V absolute maximum terminal voltage, ±5 mA continuous wiper current rating, and TSSOP-16 package compatibility with high-voltage analog signal paths.
Technical Context
The AD5262BRUZ20 implements two independent 8-bit RDAC structures, each controlled via a 9-bit SPI frame (1 address bit + 8 data bits), where A0 selects RDAC1 (A1/W1/B1) or RDAC2 (A2/W2/B2). Each channel features dedicated wiper position latches retained during shutdown.
It supports both potentiometer divider mode (VA–W–VB) and rheostat mode (A–W or B–W), with guaranteed monotonicity, 0.5 LSB typical INL in potentiometer mode, and 310 kHz −3 dB bandwidth at RAB = 20 kΩ. Terminal voltage range spans VSS to VDD, enabling bipolar AC/DC operation up to ±5 V across terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual, independently programmable RDACs (RDAC1 and RDAC2) |
| End-to-End Resistance | 20 kΩ ±30% - sets gain scaling range and current limits in voltage divider or rheostat configurations |
| Resolution | 8-bit (256 positions) - enables 0.39% step resolution for fine analog adjustment |
| Temperature Coefficient | 35 ppm/°C - ensures stable resistance over −40°C to +85°C industrial range |
| Supply Range | Single: 4.5 V to 16.5 V; Dual: ±4.5 V to ±5.5 V - supports direct integration into 12 V/15 V systems without level-shifting |
| Interface | SPI-compatible 4-wire (CS, CLK, SDI, SDO) - enables daisy-chaining and microcontroller-native control without protocol translation |
| Wiper Current Rating | ±5 mA continuous - defines maximum load current in rheostat-mode current sources or sensor bias networks |
Pinout & Package
AD5262BRUZ20 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed pad for thermal performance. Pin 1 is SDO; pins 2–4 and 14–16 serve A1/W1/B1 and A2/W2/B2 respectively; VL and VSS support logic-level isolation from analog supplies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDO) | Serial Data Output | Open-drain output enabling daisy-chain configuration without external logic; requires pull-up to VL |
| 2 (A1), 4 (B1), 3 (W1) | RDAC1 Terminals | Fixed resistor endpoints and wiper for first channel; supports independent voltage divider or variable resistance use |
| 16 (A2), 15 (W2), 14 (B2) | RDAC2 Terminals | Second independent channel; A2/W2/B2 electrically isolated from RDAC1 except shared supply rails |
| 5 (VDD), 12 (VSS) | Analog Power Supplies | Support ±5.5 V dual or 15 V single supply; |VDD − VSS| ≤ 15 V absolute limit governs HV analog path design |
| 13 (VL) | Logic Supply | Decouples digital interface voltage (2.7 V–5.5 V) from analog supplies-prevents noise coupling into RDAC control |
| 9 (CS), 7 (CLK), 8 (SDI) | SPI Interface Inputs | Standard 4-wire SPI timing (25 MHz max clock); CS edge triggers latch transfer from shift register to RDAC latch |
| 10 (PR) | Preset Input | Active-low signal forcing both RDACs to 0x80 (midscale)-used for fail-safe recovery and calibration reset |
| 6 (SHDN) | Shutdown Control | Active-low input opening A-terminals and connecting W to B; retains wiper position in latch during low-power state |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual-channel architecture | Enables matched stereo audio control or differential gain/offset tuning without inter-channel crosstalk (−64 dB analog crosstalk) |
| 15 V absolute maximum terminal voltage | Allows direct use in 12 V industrial sensors and 15 V op-amp circuits without external voltage clamping or attenuation |
| Midscale power-on preset | Guarantees known wiper position (0x80) at startup-eliminates undefined output transients in critical analog loops |
| Low 35 ppm/°C tempco | Reduces drift-induced gain error to <0.3% over full industrial temperature range, critical for precision instrumentation |
| ±5 mA wiper current capability | Supports active current-source designs (e.g., 4–20 mA transmitters) without external amplification or buffering |
Applications
| Instrumentation Gain Calibration | Stereo Audio Level Control |
|---|---|
|
Use Scenario: Precision DC offset and gain adjustment in 16-bit data acquisition front-ends with rail-to-rail op-amps. IC Role / Device Role / Timing Role: Two-terminal rheostat (A–W) for feedback resistor trimming and three-terminal potentiometer (A–W–B) for reference voltage division. Use Value: 0.5 LSB INL and 35 ppm/°C tempco maintain <0.05% total gain error across temperature-meeting Class A DAQ accuracy requirements. |
Use Scenario: Independent left/right channel volume control in professional audio mixers with analog signal path preservation. IC Role / Device Role / Timing Role: Dual potentiometer divider (A1–W1–B1 and A2–W2–B2) configured as logarithmic attenuators via firmware mapping. Use Value: Channel matching <0.1% and −64 dB analog crosstalk prevent audible channel bleed and preserve stereo imaging fidelity. |
| Programmable Voltage Reference | Line Impedance Matching |
|
Use Scenario: Digitally adjustable 2.5 V reference generation for ADCs/DACs in field-configurable test equipment. IC Role / Device Role / Timing Role: Potentiometer divider with fixed VA = VDD and VB = GND; wiper feeds buffer amplifier input. Use Value: 5 ppm/°C voltage divider tempco ensures reference stability <10 ppm/°C-superior to discrete resistor networks. |
Use Scenario: Dynamic termination of RS-485/RS-422 differential lines in multi-drop industrial networks with varying cable lengths. IC Role / Device Role / Timing Role: Rheostat (A–W) placed in series with termination resistor to adjust effective Z₀ from 100 Ω to 150 Ω. Use Value: 20 kΩ end-to-end resistance allows fine-grained impedance tuning (100–120 Ω range) while maintaining >30 kHz signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRUZ10 | Quad-channel, 10 kΩ, 128-position, no PR pin, 5.5 V max supply | Lacks midscale preset and 15 V operation; suitable only for low-voltage, multi-channel trimming | Select when needing four independent pots at 3.3 V/5 V systems with lower resolution and no HV support |
| MAX5487ETE+ | Dual-channel, 100 kΩ, 256-position, I²C interface, 5.5 V max supply | I²C-only interface; no SPI or 15 V tolerance; higher wiper resistance (120 Ω typ) | Choose for space-constrained designs requiring I²C bus sharing and lower pin count, but not for HV analog paths |
Compared with AD5204BRUZ10 and MAX5487ETE+, the AD5262BRUZ20 uniquely supports 15 V operation, includes hardware midscale preset (PR), and maintains low wiper resistance (60–150 Ω) at full supply range-making it the only option for robust industrial gain control where voltage headroom and fail-safe initialization are mandatory.
Availability
AD5262BRUZ20 is available at Aetrix Electronics and suitable for industrial instrumentation, professional audio equipment, and programmable power supply calibration requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for AD5262BRUZ20 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 AD5262 is part of Analog Devices' precision digital potentiometer family designed for replacing mechanical trimmers in environments demanding temperature stability, long-term reliability, and programmable analog signal conditioning.
FAQ
What is the maximum supply voltage supported by the AD5262BRUZ20?
The AD5262BRUZ20 supports a single-supply range of 4.5 V to 16.5 V and dual-supply operation up to ±5.5 V. Its absolute maximum ratings allow VDD to VSS ≤ 15 V, meaning AD5262BRUZ20 can safely operate at +15 V / 0 V or ±5 V configurations without damage or specification violation.
Does the AD5262BRUZ20 retain wiper position during shutdown?
Yes, the AD5262BRUZ20 retains its programmed wiper position in the RDAC latch during SHDN assertion. When AD5262BRUZ20 exits shutdown mode, it resumes operation at the exact resistance value set prior to shutdown-enabling seamless power-gating in battery-powered instrumentation.
Can the AD5262BRUZ20 be used in bipolar AC signal paths?
Yes, AD5262BRUZ20 supports bipolar operation: VA, VB, and VW may swing between VSS and VDD. With ±5 V dual supply, AD5262BRUZ20 handles ±5 V AC signals directly across A–W–B terminals-ideal for symmetrical audio or sensor signal conditioning without DC blocking capacitors.
What is the purpose of the VL pin on the AD5262BRUZ20?
The VL pin on AD5262BRUZ20 supplies the logic interface (CS, CLK, SDI, SDO, PR, SHDN) independently from analog supplies (VDD/VSS). This separation prevents digital switching noise from modulating analog resistance values-critical for low-distortion applications like audio level control where AD5262BRUZ20 is commonly deployed.
How does the PR (Preset) pin function on the AD5262BRUZ20?
The PR pin on AD5262BRUZ20 is an active-low input that forces both RDAC channels to 0x80 (midscale) regardless of current latch contents. This provides deterministic startup behavior and field-service recalibration. AD5262BRUZ20 also features internal power-on preset, so PR is optional but recommended for safety-critical systems.
AD5262BRUZ20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- 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:
- 16-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 60
AD5262BRUZ20 FAQ
1.How can I place an order for AD5262BRUZ20 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5262BRUZ20 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 AD5262BRUZ20 reliable?
The price and inventory of AD5262BRUZ20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5262BRUZ20 is usually 5 days.
3.What payment methods are accepted for AD5262BRUZ20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5262BRUZ20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5262BRUZ20?
AD5262BRUZ20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5262BRUZ20 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 AD5262BRUZ20?
For technical support, including AD5262BRUZ20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5262BRUZ20 requirements.
6.How does Aetrix verify that AD5262BRUZ20 is sourced from the original manufacturer or authorized distributors?
All AD5262BRUZ20 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 AD5262BRUZ20 meets industry standards.
7.What is the process for return or replacement of AD5262BRUZ20?
All AD5262BRUZ20 units undergo pre-shipment inspection (PSI). If there is an issue with AD5262BRUZ20, 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 AD5262BRUZ20 part is unused and in its original packaging.
Return procedure for AD5262BRUZ20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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