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Analog Devices Inc. AD5262BRUZ20-RL7
- Part No.:
- AD5262BRUZ20-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5262BRUZ20-RL7.pdf
- Description:
- IC DGT POT 20KOHM 256TAP 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,069
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Product details
Overview
AD5262BRUZ20-RL7 from Analog Devices is a dual-channel, 256-position, 20 kΩ digital potentiometer with SPI-compatible 4-wire interface, ±5.5 V dual-supply or +15 V single-supply operation, and 35 ppm/°C temperature coefficient-designed for precision gain/offset adjustment in instrumentation and stereo audio level control.
For engineers reviewing the AD5262BRUZ20-RL7 datasheet, AD5262BRUZ20-RL7 pinout, AD5262BRUZ20-RL7 application, or AD5262BRUZ20-RL7 equivalent, key selection criteria include dual-channel independent programming, midscale power-on reset, shutdown mode with wiper-to-B connection, and guaranteed −40°C to +85°C industrial operation.
Technical Context
The AD5262BRUZ20-RL7 implements two independent 256-step resistor ladders (RDAC1/RDAC2), each controlled by a 9-bit serial word with address bit A0 for channel selection. Its architecture supports both potentiometer divider and rheostat modes, with monotonic 8-bit resolution and guaranteed linearity (±½ LSB INL).
It features a dedicated PR pin for active-low midscale preset (0x80), SHDN pin for open-circuit A-terminal shutdown with wiper tied to B, and daisy-chainable SDO output. Operation is validated across ±5.5 V dual supplies or +4.5 V to +16.5 V single supply, with logic supply VL decoupled at 2.7 V to 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual-channel, independently programmable RDAC1 and RDAC2 |
| Nominal Resistance | 20 kΩ A-to-B terminal resistance, fixed value with ±30% tolerance at 25°C |
| Resolution | 256 positions (8-bit), enabling 0.39% step resolution across full range |
| Tempco | 35 ppm/°C (typical) resistance drift over −40°C to +85°C, critical for stable gain calibration |
| Supply Range | +4.5 V to +16.5 V single supply or ±4.5 V to ±5.5 V dual supply-supports 15 V analog rails |
| Interface | SPI-compatible 4-wire: CS, CLK (25 MHz max), SDI, SDO-enables microcontroller integration without protocol translation |
| Wiper Resistance | 60 Ω to 150 Ω (typical), directly impacts low-end accuracy in rheostat-mode current sensing |
Pinout & Package
AD5262BRUZ20-RL7 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch), RoHS-compliant and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDO) | Serial Data Output | Open-drain output requiring external pull-up; enables daisy-chaining multiple AD5262 devices |
| 2 (A1), 4 (B1), 3 (W1) | RDAC1 Terminals | A1/B1 define 20 kΩ fixed resistor; W1 taps programmable voltage/current point-used as potentiometer or rheostat |
| 16 (A2), 14 (B2), 15 (W2) | RDAC2 Terminals | Independent second channel with identical electrical behavior-enables stereo or differential adjustment |
| 5 (VDD), 12 (VSS), 11 (GND) | Analog Power Rails | VDD/VSS support ±5.5 V dual or +15 V single supply; GND is digital/analog common reference |
| 13 (VL) | Logic Supply | Separate 2.7–5.5 V rail for digital interface-decouples logic noise from analog performance |
| 9 (CS), 7 (CLK), 8 (SDI) | SPI Interface Inputs | CS-active-low enables register load on rising edge; CLK positive-edge clocks 9-bit word (A0 + D7–D0) |
| 10 (PR), 6 (SHDN) | Control Pins | PR forces wiper to 0x80 (midscale); SHDN opens A-terminals and shorts W to B-zero-power standby |
Key Features
| Feature | Design Value |
|---|---|
| 256-step linear taper | Guaranteed monotonicity and ±½ LSB integral nonlinearity enable precision voltage division without calibration |
| Dual independent channels | Separate RDAC latches allow asynchronous update of channel 1 and channel 2-essential for stereo audio or matched sensor biasing |
| Midscale power-on reset | Internal POR circuit loads 0x80 into both RDAC latches at power-up-ensures known startup state without host initialization |
| 15 V analog operation | Supports industrial ±10 V signal chains and legacy 12/15 V systems without level-shifting or external regulators |
| Shutdown mode | SHDN pin reduces supply current to 5 μA while retaining wiper position-ideal for battery-powered or low-duty-cycle systems |
Applications
| Instrumentation Gain Calibration | Stereo Audio Level Control |
|---|---|
|
Use Scenario: Precision DC gain setting in programmable-gain instrumentation amplifiers for sensor signal conditioning. IC Role / Device Role / Timing Role: AD5262BRUZ20-RL7 acts as digitally adjustable feedback resistor in op-amp configuration, replacing mechanical trimmers. Use Value: Enables remote recalibration via SPI without hardware access; 35 ppm/°C tempco ensures <±0.1% gain drift over industrial temperature range. |
Use Scenario: Independent left/right channel volume control in professional audio mixing consoles or DAC output stages. IC Role / Device Role / Timing Role: AD5262BRUZ20-RL7 operates in potentiometer mode, with A1/W1/B1 and A2/W2/B2 forming matched attenuator networks. Use Value: Dual-channel independence prevents crosstalk-induced imbalance; 256-step resolution delivers 0.5 dB/channel granularity at mid-scale. |
| Programmable Voltage Reference | Line Impedance Matching |
|
Use Scenario: Generating stable, software-adjustable reference voltages for ADCs or comparators in test equipment. IC Role / Device Role / Timing Role: AD5262BRUZ20-RL7 configured as a ratiometric divider between precision VREF and ground, with wiper output buffered. Use Value: Eliminates need for multiple discrete resistor networks; ±¼ LSB DNL ensures <0.1% reference error across full code range. |
Use Scenario: Dynamic termination impedance tuning for high-speed communication lines (e.g., RS-485, LVDS) under varying cable lengths or EMI conditions. IC Role / Device Role / Timing Role: AD5262BRUZ20-RL7 used in rheostat mode (A–W or B–W) to adjust series termination resistance in real time. Use Value: 20 kΩ nominal value covers standard 50–120 Ω ranges via scaling; 5 μs wiper settling enables adaptive impedance updates during link training. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5262BRUZ50-RL7 | Same dual-channel architecture and pinout, but 50 kΩ A–B resistance instead of 20 kΩ | Better suited for higher-impedance gain-setting networks where lower current draw is required | Select when circuit analysis confirms 50 kΩ provides optimal signal-to-noise ratio and thermal noise floor |
| AD5262BRUZ200-RL7 | Same footprint and interface, but 200 kΩ A–B resistance; wiper resistance increases to ~200 Ω | Preferred for ultra-low-power biasing (e.g., MOSFET gate control) and high-Z sensor interfaces | Choose when input bias currents <10 nA demand minimal loading-verify bandwidth reduction (30 kHz vs. 310 kHz @ 20 kΩ) |
Compared with AD5262BRUZ50-RL7 and AD5262BRUZ200-RL7, the AD5262BRUZ20-RL7 offers the lowest wiper resistance and highest −3 dB bandwidth (310 kHz), making it optimal for wideband gain control and fast-settling applications where drive capability and speed are prioritized over power savings.
Availability
AD5262BRUZ20-RL7 is available at Aetrix Electronics and suitable for instrumentation gain calibration, stereo audio level control, programmable voltage reference generation, and line impedance matching requiring stable component supply across extended industrial temperature ranges.
Supply support for AD5262BRUZ20-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design and manufacturing expertise spanning precision signal chain solutions.
The AD5262 is part of Analog Devices' precision digital potentiometer product line, engineered for applications demanding stable resistance over temperature, robust SPI interfacing, and reliable operation in harsh industrial environments.
FAQ
What is the maximum supply voltage rating for AD5262BRUZ20-RL7?
The AD5262BRUZ20-RL7 supports a single-supply range of +4.5 V to +16.5 V and a dual-supply range of ±4.5 V to ±5.5 V. Absolute maximum ratings specify VDD to GND ≤ +17 V and VDD to VSS ≤ 17 V. Operating continuously at +15 V is fully specified and validated per datasheet Table 1 and Absolute Maximum Ratings.
Does AD5262BRUZ20-RL7 retain its wiper position during shutdown?
Yes. When the SHDN pin is asserted (logic low), the AD5262BRUZ20-RL7 opens all A-terminal connections and ties each wiper to its respective B-terminal, but the RDAC latch contents-including the programmed 8-bit code-are preserved. Upon exit from shutdown, the wiper immediately resumes the prior resistance value without reinitialization.
How does the PR (Preset) pin function on AD5262BRUZ20-RL7?
The PR pin is an active-low input that forces both RDAC1 and RDAC2 wipers to the midscale position (0x80) regardless of current latch contents. This is a hardware override independent of SPI communication and is commonly used for fault recovery or system reset sequences. The action occurs synchronously with the PR pulse edge and completes within 50 ns.
Can AD5262BRUZ20-RL7 be used in bipolar AC signal paths?
Yes. The AD5262BRUZ20-RL7 supports true bipolar operation: terminals A, B, and W tolerate voltages from VSS to VDD with no polarity restrictions. In dual-supply mode (e.g., ±5 V), it can pass or attenuate AC signals centered at 0 V without clipping, provided instantaneous terminal voltages remain within absolute maximum ratings.
What is the guaranteed linearity performance of AD5262BRUZ20-RL7 in potentiometer mode?
In potentiometer divider mode, the AD5262BRUZ20-RL7 guarantees ±½ LSB integral nonlinearity (INL) and ±¼ LSB differential nonlinearity (DNL) over temperature (−40°C to +85°C). These values are production-tested and ensure monotonic transfer characteristics critical for precision voltage scaling and calibration tasks.
AD5262BRUZ20-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-RL7 FAQ
1.How can I place an order for AD5262BRUZ20-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5262BRUZ20-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 AD5262BRUZ20-RL7 reliable?
The price and inventory of AD5262BRUZ20-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5262BRUZ20-RL7 is usually 5 days.
3.What payment methods are accepted for AD5262BRUZ20-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5262BRUZ20-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5262BRUZ20-RL7?
AD5262BRUZ20-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5262BRUZ20-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 AD5262BRUZ20-RL7?
For technical support, including AD5262BRUZ20-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5262BRUZ20-RL7 requirements.
6.How does Aetrix verify that AD5262BRUZ20-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5262BRUZ20-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 AD5262BRUZ20-RL7 meets industry standards.
7.What is the process for return or replacement of AD5262BRUZ20-RL7?
All AD5262BRUZ20-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5262BRUZ20-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 AD5262BRUZ20-RL7 part is unused and in its original packaging.
Return procedure for AD5262BRUZ20-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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