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Analog Devices Inc./Maxim Integrated MAX5529GTA+
- Part No.:
- MAX5529GTA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Potentiometers
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX5529GTA+.pdf
- Description:
- MAX5529 ONE-TIME PROGRAMMABLE, L
- Quantity:
- Payment:
- Shipping:
Inventory:4,618
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Product details
Overview
MAX5529GTA+ from Maxim Integrated is a one-time programmable, linear-taper digital potentiometer with 10kΩ end-to-end resistance, 64 wiper positions, and ±2.0mA max wiper current. It operates from +2.7V to +5.5V, features 5ppm/°C ratiometric temperature coefficient, and uses an 8-pin TDFN-EP package for space-constrained analog trimming in LCD bias control and programmable filters.
For engineers reviewing the MAX5529GTA+ datasheet, MAX5529GTA+ pinout, MAX5529GTA+ application, or MAX5529GTA+ equivalent, this page delivers verified electrical specs, OTP programming timing, wiper settling behavior, thermal derating data, and real-world use cases for factory-calibrated analog adjustment.
Technical Context
The MAX5529GTA+ implements a 64-position resistor ladder with OTP fuse-based power-on wiper position storage. Its 2-wire up/down interface enables sequential wiper stepping only when CS is low, and the PV pin accepts +11V to +11.55V for one-time programming of midscale (tap 31) or user-defined positions.
It functions as either a 3-terminal potentiometer or 2-terminal variable resistor, with guaranteed operation across –40°C to +105°C. Wiper bandwidth reaches 1MHz at midscale with 10pF load, and THD is –94dB at 10kHz under 1VRMS into 100kΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10kΩ - sets full-scale analog range for voltage divider or gain-setting networks |
| Wiper Positions | 64 taps - provides ~1.56% resolution per step for precise calibration |
| Ratiometric Tempco | 5ppm/°C - ensures stable voltage division ratio over temperature in reference circuits |
| Max Wiper Current | ±2.0mA - supports direct drive of op-amp inputs or moderate-load bias networks |
| Supply Voltage Range | +2.7V to +5.5V - compatible with single-supply 3.3V and 5V systems without level shifting |
| Static Supply Current | 1.5µA (max) - enables multi-year battery life in portable instrumentation |
| Wiper Bandwidth | 1000kHz - preserves signal integrity up to audio frequencies in filter tuning |
| Operating Temperature | –40°C to +105°C - qualified for automotive cabin and industrial control environments |
Pinout & Package
MAX5529GTA+ uses an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad connected internally to GND. Thermal performance requires soldering the EP to a large ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (W) | Wiper connection | Adjustable tap point between H and L; carries full wiper current (±2.0mA max) |
| 2 (CS) | Chip-select input | Active-low serial interface enable; also controls OTP programming pulse count (6 or 7 cycles) |
| 3 (VDD) | Positive supply | +2.7V to +5.5V input; requires 0.1µF local bypass to GND |
| 4 (GND) | Ground reference | Return path for VDD, PV, and signal terminals; connects to exposed pad |
| 5 (PV) | Programming voltage | +11V to +11.55V input during OTP setup; must be decoupled with 22µF capacitor |
| 6 (U/D) | Up/down control | Determines increment/decrement direction on CS falling edge; high = increment |
| 7 (L) | Resistor low terminal | Fixed end of resistor array; used as ground reference in variable-resistor mode |
| 8 (H) | Resistor high terminal | Fixed end of resistor array; connects to VDD or bias source in voltage-divider mode |
Key Features
| Feature | Design Value |
|---|---|
| One-time programmable wiper position | Locks power-on wiper setting via 7-pulse CS sequence, converting device to fixed resistor-divider |
| Ultra-low static current | 1.5µA max supply draw enables always-on calibration memory in energy-harvesting sensors |
| Low ratiometric tempco | 5ppm/°C ensures <0.05% gain drift over –40°C to +105°C in precision reference dividers |
| High wiper current capability | ±2.0mA rating allows direct interface with op-amp inputs without external buffering |
| 1MHz wiper bandwidth | Supports dynamic gain tuning in audio-band programmable filters without phase distortion |
Applications
| LCD Contrast Control | Programmable Filter Tuning |
|---|---|
|
Use Scenario: Adjusting bias voltage for monochrome STN LCD panels in industrial HMIs. IC Role / Device Role / Timing Role: Acts as digitally trimmed voltage divider between VDD and GND, setting VBIAS for optimal contrast. Use Value: Enables factory-set contrast calibration stored in OTP, eliminating manual potentiometers and field drift. |
Use Scenario: Setting cutoff frequency and gain of first-order active low-pass filters in sensor signal conditioning. IC Role / Device Role / Timing Role: Configures R2 (gain) and R3 (cutoff) in op-amp feedback networks using wiper and end terminals. Use Value: Allows firmware-controlled filter reconfiguration without hardware changes or BOM variants. |
| Adjustable Voltage Reference | Factory-Calibrated Sensor Bias |
|
Use Scenario: Generating stable, trimmable output voltages from precision shunt references like MAX6160. IC Role / Device Role / Timing Role: Serves as R1/R2 feedback divider in adjustable reference circuits, with R2 = 10kΩ for MAX5529GTA+. Use Value: Delivers 0.1% initial accuracy and <50ppm total drift over temperature and life. |
Use Scenario: Setting excitation current or offset voltage for pressure/temperature transducers in medical devices. IC Role / Device Role / Timing Role: Provides post-assembly, one-time trim of sensor output span/zero using OTP wiper lock. Use Value: Replaces laser-trimmed resistors and reduces test time by embedding calibration in final firmware flash. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-10 | Nonvolatile EEPROM-based (1024 taps), 10kΩ, I²C interface, 500ppm/°C tempco | Supports repeated reprogramming and multi-voltage I²C buses; lacks OTP lock security | Choose AD5170BRMZ-10 when field recalibration or multiple trim points are required. |
| MCP41010-I/P | Volatile SPI interface, 10kΩ, 100ppm/°C tempco, no OTP, 5.5V max supply | Requires continuous MCU control; unsuitable for unpowered calibration retention | Choose MCP41010-I/P for cost-sensitive, non-critical trimming where power remains present. |
Compared with AD5170BRMZ-10 and MCP41010-I/P, MAX5529GTA+ uniquely guarantees permanent, tamper-resistant calibration via one-time programming-critical for medical and automotive applications where configuration integrity must survive power loss and firmware updates.
Availability
MAX5529GTA+ is available at Aetrix Electronics and suitable for LCD bias control, programmable filter design, adjustable voltage reference generation, factory-calibrated sensor biasing, and industrial HMI trimming requiring stable component supply and long-term calibration retention.
Supply support for MAX5529GTA+ 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 industrial, automotive, and communications systems, with emphasis on low-power, high-reliability solutions.
The MAX5527/MAX5528/MAX5529 family targets factory-programmable analog trimming-replacing mechanical pots in applications demanding permanent, drift-free calibration without nonvolatile memory overhead.
FAQ
What is the maximum wiper current rating for MAX5529GTA+?
The MAX5529GTA+ supports ±2.0mA maximum continuous current through the wiper terminal (Pin 1). This rating applies across the full –40°C to +105°C operating range and enables direct interfacing with op-amp inputs or bias networks without external current limiting. Exceeding this value risks irreversible damage to the internal resistor ladder structure.
How does the one-time programming (OTP) function work on MAX5529GTA+?
MAX5529GTA+ uses a dedicated PV pin and 6- or 7-cycle CS pulse sequence to permanently store the wiper position. Six pulses set the power-on position while retaining adjustability; seven pulses lock the wiper and disable the U/D interface. Once programmed, the setting persists without power and cannot be erased or rewritten-ensuring calibration integrity in safety-critical systems.
Can MAX5529GTA+ operate from a 3.3V supply?
Yes, MAX5529GTA+ operates fully across +2.7V to +5.5V, including standard 3.3V logic supplies. At 3.3V, it maintains 64-tap resolution, 5ppm/°C ratiometric tempco, and 1.5µA max static current. Digital inputs (CS, U/D) remain compatible with 3.3V CMOS levels, and wiper bandwidth drops only marginally to ~850kHz.
What is the temperature coefficient specification for MAX5529GTA+?
MAX5529GTA+ specifies two temperature coefficients: 35ppm/°C end-to-end resistance drift and 5ppm/°C ratiometric drift. The latter governs voltage division accuracy-critical in reference circuits-because it reflects how the H–W and W–L resistance ratios track each other over temperature, minimizing gain error.
Which package type does MAX5529GTA+ use, and what is its thermal advantage?
MAX5529GTA+ uses an 8-pin TDFN-EP (3mm × 3mm) package with an exposed pad internally tied to GND. When soldered to a PCB ground plane, this pad enables a thermal resistance (θJA) of 18.2°C/W, allowing 1454.5mW continuous power dissipation at +70°C ambient-more than 4× higher than the µMAX variant, supporting higher-current analog paths.
MAX5529GTA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 64
- Resistance (Ohms):
- 10k
- Interface:
- Up/Down (U/D, CS)
- Memory Type:
- OTP
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- -
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-TDFN-EP (3x3)
- Operating Temperature:
- -40°C ~ 105°C
- Resistance - Wiper (Ohms) (Typ):
- 125
MAX5529GTA+ FAQ
1.How can I place an order for MAX5529GTA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5529GTA+ 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 MAX5529GTA+ reliable?
The price and inventory of MAX5529GTA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5529GTA+ is usually 5 days.
3.What payment methods are accepted for MAX5529GTA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5529GTA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5529GTA+?
MAX5529GTA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5529GTA+ 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 MAX5529GTA+?
For technical support, including MAX5529GTA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5529GTA+ requirements.
6.How does Aetrix verify that MAX5529GTA+ is sourced from the original manufacturer or authorized distributors?
All MAX5529GTA+ 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 MAX5529GTA+ meets industry standards.
7.What is the process for return or replacement of MAX5529GTA+?
All MAX5529GTA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX5529GTA+, 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 MAX5529GTA+ part is unused and in its original packaging.
Return procedure for MAX5529GTA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX5529GTA+ Tags
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