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Analog Devices Inc./Maxim Integrated MAX5528GUA+T
- Part No.:
- MAX5528GUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX5528GUA+T.pdf
- Description:
- IC DGTL POT 50KOHM 64TAP 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
The MAX5528GUA+T from Maxim Integrated is a one-time programmable, linear-taper digital potentiometer in an 8-pin µMAX package with 50kΩ end-to-end resistance, 64 wiper positions, ±1 LSB integral nonlinearity, and 35ppm/°C end-to-end temperature coefficient. It replaces mechanical potentiometers in precision biasing, programmable gain, and factory-calibrated voltage-divider applications.
For engineers reviewing the MAX5528GUA+T datasheet, MAX5528GUA+T pinout, MAX5528GUA+T application, or MAX5528GUA+T equivalent, this page delivers verified electrical parameters, confirmed µMAX package mapping, validated 2-wire up/down interface behavior, and real-world use cases for LCD bias control, adjustable references, and programmable filters.
Technical Context
The MAX5528GUA+T implements a 64-position resistor ladder with a digitally controlled wiper driven by a 2-wire up/down interface synchronized to CS transitions. Its one-time programmable (OTP) block stores the power-on wiper position using a dedicated 11V PV pin, enabling permanent configuration lock after factory or field calibration.
It operates from a single +2.7V to +5.5V supply with ultra-low 1.5µA max static current and supports ratiometric operation with 5ppm/°C temperature coefficient. The device guarantees operation across –40°C to +105°C and features wiper settling time of 400ns and 200kHz wiper –3dB bandwidth at midscale.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 50kΩ - defines full-scale adjustment range for voltage dividers and gain-setting networks |
| Wiper Positions | 64 - provides 1.56% resolution per step for fine-grained analog tuning |
| INL / DNL | ±1 LSB - ensures monotonicity and predictable transfer function in closed-loop systems |
| Tempco (End-to-End) | 35ppm/°C - limits resistance drift to ±0.35% over –40°C to +105°C operating range |
| Supply Current (Static) | 1.5µA max - enables multi-year battery life in portable instrumentation and sensor nodes |
| Operating Voltage | +2.7V to +5.5V - compatible with Li-ion, 3.3V, and 5V logic rails without level shifting |
| Wiper Bandwidth | 200kHz - supports audio-frequency signal path adjustment without attenuation or phase shift |
Pinout & Package
MAX5528GUA+T is housed in an 8-pin µMAX package (5mm × 3mm), RoHS-compliant, with exposed pad not present (unlike TDFN variant). Pin 1 is W (wiper), Pin 2 is CS (chip-select), Pin 3 is VDD, Pin 4 is GND, Pin 5 is PV (programming voltage), Pin 6 is U/D (up/down control), Pin 7 is L (low terminal), and Pin 8 is H (high terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (W) | Wiper output | Variable tap point between H and L; connects to feedback node or bias point in divider configurations |
| 2 (CS) | Chip-select input | Active-low enable for 2-wire interface; also triggers OTP programming sequence when pulsed with PV high |
| 3 (VDD) | Positive supply | Single 2.7V–5.5V rail powers internal logic and resistor array; requires 0.1µF local bypass |
| 4 (GND) | Ground reference | Common return for VDD, PV, and signal paths; must be low-impedance for stable wiper voltage |
| 5 (PV) | Programming voltage | 11V input used only during one-time wiper position lock; float or tie to GND during normal operation |
| 6 (U/D) | Direction control | High = increment wiper on CS falling edge; low = decrement; idle-high for default operation |
| 7 (L) | Resistor low terminal | Fixed end of resistor string; connects to ground or low-side reference in variable-resistor mode |
| 8 (H) | Resistor high terminal | Fixed end of resistor string; connects to VDD or high-side reference in voltage-divider mode |
Key Features
| Feature | Design Value |
|---|---|
| One-time programmable wiper position | Locks power-on setting permanently via 7-pulse CS sequence at 11V PV, converting device into fixed-ratio divider |
| 2-wire up/down interface | Eliminates need for SPI/I²C controllers; uses only CS and U/D pins with no clock or data lines |
| Ratiometric tempco of 5ppm/°C | Ensures stable voltage division ratio across temperature-critical for precision reference and sensor conditioning |
| Ultra-low 1.5µA static current | Reduces quiescent power to <8µW at 5V, enabling always-on calibration storage in energy-constrained IoT endpoints |
| Guaranteed –40°C to +105°C operation | Validated performance for automotive cabin modules, industrial PLC I/O, and outdoor metering equipment |
Applications
| LCD Contrast Control | Programmable Filter Tuning |
|---|---|
Use Scenario: Adjusting contrast voltage in monochrome or segment LCD displays powered from 3.3V or 5V rails. IC Role / Device Role / Timing Role: Acts as digitally set voltage divider between VDD and GND, feeding buffered output to LCD V0 pin. Use Value: Replaces manual trimmer with factory-programmed contrast setting; eliminates field adjustment and improves batch consistency. |
Use Scenario: Setting cutoff frequency and gain of first-order active RC filters in signal-conditioning front ends. IC Role / Device Role / Timing Role: Configures R2 (gain) and R3 (cutoff) in op-amp-based filter topology; wiper bandwidth supports ≤20kHz tuning. Use Value: Enables firmware-driven filter reconfiguration without hardware change-ideal for adaptive sensor interfaces and test equipment. |
| Adjustable Voltage Reference | Factory-Calibrated Sensor Bias |
Use Scenario: Generating precise, user-selectable output voltages from a fixed reference IC (e.g., MAX6160) in power management circuits. IC Role / Device Role / Timing Role: Serves as programmable feedback resistor (R2) in adjustable shunt or series reference configuration. Use Value: Achieves 1.23V × (1 + 50kΩ/R2) output with <±0.1% error over temperature due to ratiometric tempco. |
Use Scenario: Setting initial offset or gain trim in pressure, temperature, or current-sense amplifier modules before deployment. IC Role / Device Role / Timing Role: Provides one-time calibrated resistance value in bridge excitation or amplifier feedback path. Use Value: Eliminates post-assembly manual calibration; wiper lock prevents field tampering while maintaining traceable accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5171BRMZ-50 | I²C interface, 64 taps, 50kΩ, 20ppm/°C tempco, no OTP, 5µA typical supply current | Requires I²C controller and pull-up resistors; lacks permanent wiper lock capability | Choose when system already uses I²C bus and field reprogrammability is preferred over factory lock. |
| MCP41050-I/P | SPITM interface, 257 taps, 50kΩ, 150ppm/°C tempco, volatile memory, 2.5mA typical supply current | Needs external MCU SPI peripheral; higher tempco limits precision over wide temperature ranges | Choose when higher resolution (16-bit equivalent) is needed and power budget allows >100× higher current draw. |
Compared with AD5171BRMZ-50 and MCP41050-I/P, the MAX5528GUA+T uniquely combines ultra-low power, OTP lock, and 2-wire simplicity-making it optimal for battery-powered, tamper-resistant, and space-constrained calibration tasks where interface overhead and long-term stability are critical.
Availability
MAX5528GUA+T is available at Aetrix Electronics and suitable for LCD bias control, programmable filter design, and factory-calibrated sensor biasing requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for MAX5528GUA+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX5527/MAX5528/MAX5529 family targets digitally replaceable mechanical potentiometers in applications requiring factory-set, nonvolatile resistance values with minimal interface complexity and ultra-low power.
FAQ
What is the guaranteed operating temperature range for the MAX5528GUA+T?
The MAX5528GUA+T is fully specified and guaranteed over the industrial temperature range of –40°C to +105°C. All electrical characteristics-including end-to-end resistance, INL/DNL, tempco, and supply current-are tested and warranted across this full range, making it suitable for under-hood automotive modules and harsh-environment industrial controls.
Can the MAX5528GUA+T be reprogrammed after the initial one-time programming?
No-the MAX5528GUA+T uses true one-time programmable (OTP) memory. While six CS pulses set the power-on wiper position (leaving interface active), seven pulses permanently lock both the position and the 2-wire interface. Subsequent programming attempts OR new bits with existing ones, degrading functionality; Maxim specifies single-use programming only.
What is the maximum allowable voltage on the PV pin of the MAX5528GUA+T?
The PV pin of the MAX5528GUA+T must be driven to +11.0V to +11.55V during OTP programming, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Voltages outside this window-especially above +11.55V-risk damaging the internal fuse structure and invalidating the programming sequence.
How does the MAX5528GUA+T differ from the MAX5528GTA+ in terms of package and thermal performance?
The MAX5528GUA+T uses an 8-pin µMAX package (5mm × 3mm, no exposed pad), while the MAX5528GTA+ uses an 8-pin TDFN-EP package (3mm × 3mm, with exposed paddle tied to GND). The TDFN offers superior thermal dissipation (1454.5mW at +70°C vs. 362mW for µMAX), but the µMAX version provides larger PCB land patterns and simpler assembly for cost-sensitive layouts.
Is the wiper resistance of the MAX5528GUA+T specified, and how does it vary with supply voltage?
Yes-the MAX5528GUA+T wiper resistance (RW) is specified as 37.5kΩ (min), 50kΩ (typ), and 62.5kΩ (max) at VDD ≥ 3V, and 125Ω (min) to 650Ω (max) at VDD < 3V. This variation reflects process-dependent MOSFET channel resistance and directly impacts loading error in high-impedance feedback networks.
MAX5528GUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 64
- Resistance (Ohms):
- 50k
- Interface:
- Up/Down (U/D, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±25%
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-uMAX/uSOP
- Operating Temperature:
- -40°C ~ 105°C
- Resistance - Wiper (Ohms) (Typ):
- 125
MAX5528GUA+T FAQ
1.How can I place an order for MAX5528GUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5528GUA+T 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 MAX5528GUA+T reliable?
The price and inventory of MAX5528GUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5528GUA+T is usually 5 days.
3.What payment methods are accepted for MAX5528GUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5528GUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5528GUA+T?
MAX5528GUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5528GUA+T 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 MAX5528GUA+T?
For technical support, including MAX5528GUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5528GUA+T requirements.
6.How does Aetrix verify that MAX5528GUA+T is sourced from the original manufacturer or authorized distributors?
All MAX5528GUA+T 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 MAX5528GUA+T meets industry standards.
7.What is the process for return or replacement of MAX5528GUA+T?
All MAX5528GUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5528GUA+T, 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 MAX5528GUA+T part is unused and in its original packaging.
Return procedure for MAX5528GUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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