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Analog Devices Inc. AD5282BRUZ200
- Part No.:
- AD5282BRUZ200
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5282BRUZ200.pdf
- Description:
- IC DGT POT 200KOHM 256TP 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,193
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Product details
Overview
AD5282BRUZ200 from Analog Devices is a dual-channel, 256-position, I²C-compatible digital potentiometer with 200 kΩ fixed terminal resistance, ±5 V or +15 V supply operation, and 30 ppm/°C temperature coefficient. It replaces mechanical potentiometers in precision gain/offset adjustment, programmable voltage/current sources, and line impedance matching circuits.
For engineers reviewing the AD5282BRUZ200 datasheet, AD5282BRUZ200 pinout, AD5282BRUZ200 application, or AD5282BRUZ200 equivalent, key selection criteria include dual-channel rheostat/potentiometer operation, midscale power-on preset, programmable logic outputs O1/O2, and guaranteed −40°C to +85°C industrial temperature range.
Technical Context
The AD5282BRUZ200 implements two independent 8-bit digitally controlled resistor arrays (RAB = 200 kΩ), each with wiper position selectable via I²C interface (400 kHz max clock). Each channel supports both potentiometer (A–W–B) and rheostat (W–B or W–A) configurations with monotonic 1-LSB DNL and ±1/4-LSB INL.
It features dual programmable logic outputs (O1, O2), asynchronous active-low SHDN that shorts W to B while preserving register contents, and VL-referenced logic supply compatible with 2.7 V to VDD. Power-on defaults to code 0x80 (midscale), and terminal voltage range spans VSS to VDD with no polarity restrictions between A, B, and W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual independent RDACs - enables simultaneous gain/offset tuning or matched impedance control in stereo/audio or differential signal paths. |
| Resolution | 8-bit (256 positions) - provides 0.39% step resolution across full 200 kΩ range for fine analog adjustment. |
| Terminal Resistance | 200 kΩ ±30% - fixed end-to-end value with 1% channel-to-channel matching for balanced dual-channel designs. |
| Tempco | 30 ppm/°C (rheostat), 5 ppm/°C (potentiometer divider) - ensures stable resistance ratio over −40°C to +85°C, critical for precision instrumentation. |
| 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, and bipolar ±5 V systems without level-shifting. |
| I²C Interface | Standard-mode (400 kHz), 7-bit address with AD0/AD1 pins - allows up to four devices on one bus for multi-potentiometer systems. |
| Wiper Resistance | 60 Ω to 150 Ω - limits minimum achievable resistance and must be accounted for in low-resistance rheostat applications. |
Pinout & Package
AD5282BRUZ200 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 numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| O1 | Programmable logic output | Open-drain or push-pull configurable output; drives LEDs, logic gates, or analog switches without external buffers. |
| A1 | Channel 1 resistor terminal A | High-side connection point for potentiometer or rheostat; voltage range extends from VSS to VDD. |
| W1 | Channel 1 wiper | Digitally positioned tap; resistance to A1 or B1 varies per 8-bit code; 60–150 Ω contact resistance applies. |
| B1 | Channel 1 resistor terminal B | Low-side reference; tied to GND, VSS, or signal return; SHDN asserts W1→B1 short when active. |
| VDD | Positive supply | Accepts +4.5 V to +16.5 V; powers analog core and internal logic; sum |VDD| + |VSS| ≤ 15 V. |
| SHDN | Active-low shutdown | Asynchronous control: pulls W1/W2 to respective B terminals; preserves RDAC register state during sleep. |
| SCL | I²C clock input | CMOS-compatible, 0.6–1.3 μs timing requirements; supports standard-mode (≤400 kHz) bus operation. |
| SDA | I²C bidirectional data | Open-drain interface requiring external pull-up; handles address, instruction, and data byte transfers. |
| AD0, AD1 | I²C address bits | Set 2-bit slave address (0x58–0x5B); enable up to four AD5282BRUZ200 devices on shared bus. |
| GND | Analog/digital ground | Common reference for all signals; requires low-impedance PCB connection to minimize noise coupling. |
| VSS | Negative supply | Accepts 0 V to −5 V; enables true bipolar operation; must satisfy |VDD| + |VSS| ≤ 15 V constraint. |
| VL | Logic supply reference | Defines logic threshold (0.3×VL / 0.7×VL); must be ≤ VDD and match host controller voltage (e.g., 3.3 V or 5 V). |
| B2, W2, A2 | Channel 2 resistor terminals | Functionally identical to B1/W1/A1; supports independent or correlated programming of second channel. |
Key Features
| Feature | Design Value |
|---|---|
| Midscale power-on preset | Automatically initializes both wipers to code 0x80 at power-up, eliminating need for boot-time initialization firmware. |
| Programmable logic outputs O1/O2 | Configurable as general-purpose digital outputs-reduces BOM count by integrating auxiliary control signals. |
| Channel-to-channel matching | ±1% RAB tolerance between Channel 1 and Channel 2-enables precise differential or ratiometric applications. |
| Wide supply flexibility | Operates from +4.5 V to +16.5 V single supply or ±4.5 V to ±5.5 V dual supply-supports legacy and high-voltage industrial rails. |
| Low temperature drift in divider mode | 5 ppm/°C voltage-divider tempco-achieved by ratio-based operation, making it superior to rheostat mode for precision references. |
Applications
| Audio Gain Control | Instrumentation Offset Calibration |
|---|---|
Use Scenario: Adjusting volume or channel balance in professional audio mixers using dual-channel stereo signal paths. IC Role / Device Role / Timing Role: Dual 200 kΩ RDACs operate in potentiometer mode (A–W–B) to form precision voltage dividers controlling op-amp noninverting/inverting gain. Use Value: 8-bit resolution enables 0.39% gain steps; 5 ppm/°C divider tempco maintains channel matching across temperature; O1/O2 drive LED indicators for real-time setting feedback. | Use Scenario: Compensating sensor offset errors in industrial pressure or temperature transmitters before ADC digitization. IC Role / Device Role / Timing Role: Single channel configured as rheostat (W–B) in op-amp summing junction to inject calibrated offset current into signal path. Use Value: 200 kΩ range provides sufficient resolution for µV-level offsets; ±5 V dual-supply operation accommodates bipolar sensor outputs; SHDN enables power-gated calibration routines. |
| Programmable Current Source | Line Impedance Matching |
Use Scenario: Generating precise, software-tuned bias currents for laser diodes or photodiode transimpedance amplifiers. IC Role / Device Role / Timing Role: Rheostat mode (W–B) sets feedback resistance in constant-current op-amp configuration; VDD = +15 V enables high compliance voltage. Use Value: 200 kΩ max resistance yields sub-µA to ~75 µA range with 1 V reference; 30 ppm/°C tempco ensures stable current over ambient; I²C interface allows dynamic recalibration. | Use Scenario: Dynamically matching termination impedance to varying cable lengths or connector types in high-speed serial links (e.g., RS-485, LVDS). IC Role / Device Role / Timing Role: Dual-channel rheostat (W–B) placed in series with differential pair; channels adjusted in tandem to maintain common-mode balance. Use Value: 200 kΩ range covers typical 50 Ω–120 Ω termination needs via scaling resistors; 1% channel matching preserves differential integrity; TSSOP package fits dense routing layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5282BRUZ50 | Same dual-channel architecture, but 50 kΩ nominal resistance and lower 150 kHz −3 dB bandwidth (RAB = 50 kΩ). | Better suited for higher-frequency gain control where lower resistance reduces RC time constants. | Select AD5282BRUZ50 when bandwidth >150 kHz is required and 50 kΩ range matches circuit impedance targets. |
| AD5282BRUZ20 | Identical package and interface, but 20 kΩ nominal resistance and highest 310 kHz −3 dB bandwidth (RAB = 20 kΩ). | Optimized for fast-settling, low-noise applications such as programmable filters or high-speed DAC buffering. | Choose AD5282BRUZ20 when minimizing settling time (<5 µs) and maximizing bandwidth are critical, and 20 kΩ suits loop gain design. |
Compared with AD5282BRUZ50 and AD5282BRUZ20, the AD5282BRUZ200 offers highest resistance for precision low-current biasing and voltage division, at the cost of reduced bandwidth-making it optimal for DC-critical, low-frequency instrumentation rather than high-speed signal paths.
Availability
AD5282BRUZ200 is available at Aetrix Electronics and suitable for audio equipment manufacturing, industrial sensor calibration, programmable power supply design, and communications infrastructure requiring stable component supply across extended temperature ranges.
Supply support for AD5282BRUZ200 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.
The AD5280/AD5282 product line delivers precision, nonvolatile-free digital potentiometers for instrumentation, audio, and industrial control-designed to replace mechanical trimmers with enhanced reliability, programmability, and temperature stability.
FAQ
What supply voltages does the AD5282BRUZ200 support?
The AD5282BRUZ200 operates from +4.5 V to +16.5 V single supply or ±4.5 V to ±5.5 V dual supply, with the constraint that |VDD| + |VSS| ≤ 15 V. This allows use in legacy 5 V systems, high-voltage industrial rails up to +15 V, and true bipolar ±5 V signal conditioning. The VL pin must be set to match the host controller's logic voltage (2.7 V to VDD) and is independent of analog supply levels.
Does the AD5282BRUZ200 retain wiper position after power cycling?
No, the AD5282BRUZ200 does not have nonvolatile memory. Upon power-up, it defaults to midscale (code 0x80) for both channels unless programmed otherwise via I²C. To restore a specific setting, the host microcontroller must reissue the desired code after power-on reset. This behavior eliminates EEPROM wear-out concerns but requires firmware initialization.
Can the AD5282BRUZ200 be used in bipolar AC signal paths?
Yes, the AD5282BRUZ200 supports true bipolar operation: terminal voltages at A, B, and W may swing between VSS and VDD with no polarity restrictions. When powered by ±5 V supplies, it can attenuate or divide AC signals centered at 0 V-ideal for audio line drivers, instrumentation front-ends, and symmetrical filter topologies requiring matched positive/negative excursion handling.
What is the maximum current the AD5282BRUZ200 wiper can handle?
The AD5282BRUZ200 wiper has a maximum continuous current rating of ±5 mA per terminal (A, B, or W), with ±20 mA allowed intermittently. Exceeding these limits risks switch degradation. For a 200 kΩ device at 0x00 code, the minimum resistance is ~60 Ω; applying 5 V across W–B would yield ~83 mA-well above rating. Always limit voltage across W–B or W–A using series resistors or supply clamping to stay within ±5 mA.
How does the AD5282BRUZ200 differ from the AD5280 series?
The AD5282BRUZ200 is the dual-channel variant (two independent 256-position RDACs), whereas the AD5280 is single-channel. Both share identical architecture, I²C interface, supply ranges, tempco, and pin-compatible footprints (AD5280 in 14-lead TSSOP, AD5282 in 16-lead TSSOP). The AD5282BRUZ200 adds pins O1/O2 and second resistor bank (A2/W2/B2), enabling synchronized or independent control of two analog functions in one package.
AD5282BRUZ200 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):
- 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
AD5282BRUZ200 FAQ
1.How can I place an order for AD5282BRUZ200 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5282BRUZ200 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 AD5282BRUZ200 reliable?
The price and inventory of AD5282BRUZ200 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5282BRUZ200 is usually 5 days.
3.What payment methods are accepted for AD5282BRUZ200?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5282BRUZ200 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5282BRUZ200?
AD5282BRUZ200 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5282BRUZ200 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 AD5282BRUZ200?
For technical support, including AD5282BRUZ200 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5282BRUZ200 requirements.
6.How does Aetrix verify that AD5282BRUZ200 is sourced from the original manufacturer or authorized distributors?
All AD5282BRUZ200 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 AD5282BRUZ200 meets industry standards.
7.What is the process for return or replacement of AD5282BRUZ200?
All AD5282BRUZ200 units undergo pre-shipment inspection (PSI). If there is an issue with AD5282BRUZ200, 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 AD5282BRUZ200 part is unused and in its original packaging.
Return procedure for AD5282BRUZ200:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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