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Analog Devices Inc. AD5282BRU200-REEL7
- Part No.:
- AD5282BRU200-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5282BRU200-REEL7.pdf
- Description:
- IC DGT POT 200KOHM 256TP 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,188
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Product details
Overview
AD5282BRU200-REEL7 from Analog Devices is a dual-channel, 256-position, I²C-compatible digital potentiometer with 200 kΩ end-to-end resistance, ±5 V dual-supply or +15 V single-supply operation, and 30 ppm/°C temperature coefficient. It replaces mechanical potentiometers in precision gain/offset adjustment circuits requiring stable resistance over industrial temperature range (−40°C to +85°C).
For engineers reviewing the AD5282BRU200-REEL7 datasheet, AD5282BRU200-REEL7 pinout, AD5282BRU200-REEL7 application, or AD5282BRU200-REEL7 equivalent, key selection criteria include dual-channel rheostat/potentiometer mode support, programmable power-on midscale preset, I²C address configuration (AD0/AD1), and guaranteed channel-to-channel matching within ±1%.
Technical Context
The AD5282BRU200-REEL7 implements two independent 8-bit digitally controlled resistor ladders (RAB = 200 kΩ) with wiper terminals (W1/W2) selectable via I²C interface. Each channel supports both rheostat (A–W or B–W) and potentiometer (A–W–B) configurations, with resolution of 1 LSB = RAB/256 ≈ 781 Ω and wiper resistance of 60–150 Ω.
Its architecture includes dedicated logic outputs (O1/O2), programmable shutdown (SHDN), and voltage-level shift capability for bidirectional I²C communication across mixed-supply systems. The device operates with VLOGIC ≤ VDD and supports standard-mode I²C (400 kHz max), readback, and multiple-device bus addressing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual independent RDACs - enables simultaneous gain/offset tuning in stereo audio or differential sensor conditioning. |
| Resolution | 8-bit (256 positions) - provides 0.39% step resolution for fine analog control without external DAC interpolation. |
| Terminal Resistance | 200 kΩ ±30% - fixed A-to-B value optimized for high-impedance biasing and low-power voltage divider applications. |
| Tempco | 30 ppm/°C - ensures <±0.3% resistance drift over −40°C to +85°C, critical for instrumentation calibration stability. |
| Supply Range | +4.5 V to +16.5 V single or ±4.5 V to ±5.5 V dual - supports legacy 5 V, modern 15 V rails, and bipolar signal conditioning. |
| I²C Interface | Standard-mode (400 kHz), 7-bit address + AD0/AD1 - allows up to four devices on one bus without address conflict. |
| Power-On Default | Midscale (0x80) - eliminates startup transients in programmable voltage sources and ensures known initial state. |
Pinout & Package
AD5282BRU200-REEL7 is housed in a 16-lead TSSOP package (RU-16), 5.0 mm × 4.4 mm × 1.2 mm, with 0.65 mm pitch, RoHS-compliant and reflow-solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| O1 | Programmable logic output | Configurable as open-drain or push-pull; drives LEDs, logic gates, or analog switches without external buffers. |
| A1/W1/B1 | Channel 1 resistor terminals | Supports rheostat (A1–W1 or B1–W1) or 3-terminal potentiometer (A1–W1–B1) connection topologies. |
| VDD | Positive supply rail | Accepts +4.5 V to +16.5 V; powers internal logic and resistor ladder; must be ≥ |VSS| for valid operation. |
| SHDN | Active-low shutdown | Asynchronously shorts W1/W2 to B1/B2 and opens A1/A2; retains RDAC register contents during sleep. |
| SCL/SDA | I²C serial interface | Bi-directional, level-shifted pins compatible with 2.7–5.5 V logic; require external pull-ups per I²C spec. |
| AD0/AD1 | Address configuration bits | Set slave address (0x54–0x57); enable up to four AD5282 devices on shared I²C bus without arbitration conflict. |
| GND/VSS | Reference and negative supply | VSS supports −5 V rail for bipolar operation; GND is digital ground reference for logic and I²C signals. |
| VL | Logic supply reference | Must match host controller logic voltage (≤ VDD); defines VIH/VIL thresholds for reliable I²C communication. |
| A2/W2/B2 | Channel 2 resistor terminals | Electrically isolated from Channel 1; enables independent control of dual feedback paths or matched gain stages. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 200 kΩ RDACs with 1% channel matching | Enables precise differential gain control in instrumentation amplifiers without manual trimming or calibration. |
| Programmable power-on preset | Eliminates need for external EEPROM or MCU initialization sequence; reduces system boot time and firmware complexity. |
| I²C-compatible interface with address bits | Allows direct connection to microcontrollers without protocol translation; supports daisy-chaining up to four units on one bus. |
| Logic outputs O1/O2 | Reduces BOM count by integrating digital drive capability-replaces discrete transistors or buffers in LED indicator or switch control. |
| ±5 V dual-supply operation | Permits true bipolar signal handling (e.g., AC-coupled audio, op-amp offset nulling) without external level-shifting circuitry. |
Applications
| Audio Gain Control | Instrumentation Offset Adjustment |
|---|---|
Use Scenario: Volume control in professional audio mixers with dual-channel stereo signal path. IC Role / Device Role / Timing Role: Dual-channel potentiometer mode configures A1–W1–B1 and A2–W2–B2 as independent voltage dividers for left/right channel attenuation. Use Value: 256-step resolution enables smooth, click-free volume transitions; 200 kΩ resistance matches typical op-amp input impedance for minimal loading. | Use Scenario: Nulling DC offset in precision strain gauge bridge amplifiers. IC Role / Device Role / Timing Role: Rheostat mode (A1–W1) placed in op-amp feedback loop to dynamically adjust closed-loop gain and zero output baseline. Use Value: 30 ppm/°C tempco ensures offset stability over temperature; programmable midscale preset guarantees safe startup before MCU intervention. |
| Programmable Voltage Source | Line Impedance Matching |
Use Scenario: Generating calibrated reference voltages for ADC/DAC biasing in data acquisition modules. IC Role / Device Role / Timing Role: Potentiometer mode with A1 = VREF, B1 = GND, W1 = output; driven by I²C from host processor for dynamic VOUT setting. Use Value: 8-bit resolution yields 0.39% step accuracy; 200 kΩ terminal resistance minimizes current draw from reference source while maintaining noise immunity. | Use Scenario: Matching termination impedance in legacy RS-485 or CAN bus nodes operating at variable data rates. IC Role / Device Role / Timing Role: Rheostat mode (A1–W1) used as adjustable series termination resistor between driver output and transmission line. Use Value: Dual-channel structure allows real-time impedance tuning per link segment; ±5 V operation supports bidirectional bus signaling without polarity constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5282BRU50-REEL7 | Same dual-channel architecture and pinout, but 50 kΩ nominal resistance (vs. 200 kΩ). | Better suited for lower-impedance gain control (e.g., op-amp non-inverting stage) where 200 kΩ would cause excessive thermal noise. | Select when target application requires <100 kΩ end-to-end resistance and higher bandwidth (>150 kHz). |
| AD5202BRU20-REEL7 | Single-channel, 256-position, 20 kΩ variant; lacks O1/O2 outputs and programmable reset; uses same 14-lead TSSOP package. | Applicable only where dual-channel functionality is unnecessary and board space is constrained. | Choose for cost-sensitive, single-function designs where logic outputs and dual channels are not required. |
Compared with AD5282BRU50-REEL7 and AD5202BRU20-REEL7, AD5282BRU200-REEL7 delivers highest impedance scaling for low-current bias networks and superior temperature stability in high-precision voltage divider roles, while retaining full I²C configurability and dual-channel independence.
Availability
AD5282BRU200-REEL7 is available at Aetrix Electronics and suitable for audio equipment manufacturing, industrial instrumentation calibration, programmable power supply design, and embedded sensor interface development requiring stable component supply and long-term obsolescence management.
Supply support for AD5282BRU200-REEL7 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, serving industrial, automotive, communications, and healthcare markets.
The AD5280/AD5282 product line was designed specifically for replacing mechanical potentiometers in automated calibration, programmable gain/offset, and voltage/current source applications where reliability, repeatability, and digital control are essential.
FAQ
What is the maximum supply voltage rating for AD5282BRU200-REEL7?
The AD5282BRU200-REEL7 supports a maximum single-supply voltage of +16.5 V (VDD to GND) and a maximum dual-supply differential of ±5.5 V (VDD to VSS). Absolute maximum ratings specify VDD to GND ≤ +16.5 V and VSS to GND ≥ −7 V. Exceeding these limits risks permanent damage, as confirmed in the Absolute Maximum Ratings table (Rev. C, Page 5).
Does AD5282BRU200-REEL7 support true bipolar operation?
Yes, AD5282BRU200-REEL7 supports true bipolar operation with ±5 V supplies. Its resistor terminals (A1, W1, B1, A2, W2, B2) tolerate voltage swings from VSS to VDD, enabling AC-coupled signal conditioning and offset nulling in op-amp circuits without external level shifters. This is explicitly verified in the Terminal Voltage Operating Range specification and Applications section (Rev. C, Pages 1, 20).
How does the power-on midscale preset function in AD5282BRU200-REEL7?
The AD5282BRU200-REEL7 defaults to code 0x80 (midscale) at power-on, ensuring predictable wiper position without MCU initialization. This behavior depends on VL pin state and is configurable via SHDN assertion during startup. It eliminates reliance on external EEPROM and is guaranteed across −40°C to +85°C, as documented in General Description and Theory of Operation (Rev. C, Pages 1, 14).
Can AD5282BRU200-REEL7 be used in rheostat mode with only two terminals?
Yes, AD5282BRU200-REEL7 supports rheostat mode using any pair of terminals (e.g., A1–W1 or B1–W1), with B1 or A1 left unconnected. The device guarantees monotonicity and specifies R-DNL/R-INL performance in this configuration. Wiper resistance (60–150 Ω) and current limits (±5 mA continuous) must be observed per Electrical Characteristics (Rev. C, Page 3).
What is the channel-to-channel resistance matching tolerance for AD5282BRU200-REEL7?
The AD5282BRU200-REEL7 guarantees ±1% channel-to-channel matching for its 200 kΩ end-to-end resistance (RAB), as stated in the General Description and confirmed in Figure 32 (Long Term Channel-to-Channel RAB Match). This tolerance applies across temperature and ensures consistent gain scaling between dual feedback paths in precision amplifier designs.
AD5282BRU200-REEL7 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:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- Number of Taps:
- 256
- Resistance (Ohms):
- 200k
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- 4.5V ~ 16.5V, ±5V
- Features:
- Selectable Address
- Tolerance:
- ±30%
- Temperature Coefficient (Typ):
- 30ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 60
AD5282BRU200-REEL7 FAQ
1.How can I place an order for AD5282BRU200-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5282BRU200-REEL7 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 AD5282BRU200-REEL7 reliable?
The price and inventory of AD5282BRU200-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5282BRU200-REEL7 is usually 5 days.
3.What payment methods are accepted for AD5282BRU200-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5282BRU200-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5282BRU200-REEL7?
AD5282BRU200-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5282BRU200-REEL7 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 AD5282BRU200-REEL7?
For technical support, including AD5282BRU200-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5282BRU200-REEL7 requirements.
6.How does Aetrix verify that AD5282BRU200-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD5282BRU200-REEL7 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 AD5282BRU200-REEL7 meets industry standards.
7.What is the process for return or replacement of AD5282BRU200-REEL7?
All AD5282BRU200-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5282BRU200-REEL7, 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 AD5282BRU200-REEL7 part is unused and in its original packaging.
Return procedure for AD5282BRU200-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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