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Analog Devices Inc./Maxim Integrated MAX5403EUB-TG075
- Part No.:
- MAX5403EUB-TG075
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Potentiometers
- Package:
- -
- Datasheet:
-
MAX5403EUB-TG075.pdf
- Description:
- 256-TAP LOW-DRIFT DIGIPOT
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX5403EUB-TG075 from Maxim Integrated is a dual 256-tap digital potentiometer with one 3-terminal potentiometer (10kΩ) and one 2-terminal variable resistor (10kΩ), operating from +2.7V to +5.5V, consuming only 0.1µA supply current, and featuring glitchless tap switching and power-on reset to midscale (position 128). It enables precise, low-drift resistance adjustment in programmable gain amplifiers and adjustable voltage references.
For engineers reviewing the MAX5403EUB-TG075 datasheet, MAX5403EUB-TG075 pinout, MAX5403EUB-TG075 application, or MAX5403EUB-TG075 equivalent, key selection criteria include end-to-end tempco (35ppm/°C), ratiometric tempco (5ppm/°C), SPI-compatible 3-wire interface timing (10MHz max SCLK), wiper resistance (275Ω at VDD = +5V), and guaranteed operation across –40°C to +85°C.
Technical Context
The MAX5403EUB-TG075 integrates two independent digitally controlled resistive elements: a 3-terminal potentiometer (HA–LA–WA) and a 2-terminal variable resistor (HB–LB–WB), each with 256 discrete tap positions addressable via a 9-bit serial word (1 address bit + 8 data bits). The device uses BiCMOS process technology and features internal POR logic that forces both wipers to code 128 at power-up.
Its 3-wire SPI-compatible interface requires CS assertion before data loading, with DIN sampled on SCLK rising edges and latching on CS high transition. Timing is guaranteed up to 10MHz SCLK, with setup/hold times as low as 40ns for DIN and CS control signals - enabling reliable integration into microcontroller-based calibration systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10kΩ ±25% - defines full-scale analog range for voltage divider or gain-setting applications |
| Resolution | 8-bit (256 taps) - enables fine-grained resistance adjustment with ~39Ω step size at 10kΩ |
| Supply Voltage Range | +2.7V to +5.5V - supports direct interfacing with 3.3V and 5V logic/system rails |
| Supply Current | 0.1µA at VDD = +2.7V - enables battery-powered or ultra-low-power sensor calibration circuits |
| Temperature Coefficient | 35ppm/°C end-to-end, 5ppm/°C ratiometric - ensures stable gain/voltage ratio over industrial temperature range |
| Wiper Resistance | 275Ω (typ, VDD = +5V) - impacts signal path error in low-impedance feedback loops |
| Wiper Settling Time | 100ns - allows rapid reconfiguration during dynamic system calibration sequences |
Pinout & Package
MAX5403EUB-TG075 is housed in a 10-pin µMAX® package (U10C-4), measuring 3.0mm × 3.0mm × 0.8mm with 0.65mm lead pitch and exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for all analog and digital currents; must be low-impedance for noise-sensitive potentiometer operation |
| LB (Pin 2) | Low terminal of Resistor B | Fixed end of 2-terminal variable resistor; connects to ground or bias node in PGA configurations |
| HB (Pin 3) | High terminal of Resistor B | Fixed end of 2-terminal variable resistor; forms series resistance with LB for gain control |
| WB (Pin 4) | Wiper of Resistor B | Digitally selectable tap point; used as adjustable node in noninverting amplifier feedback paths |
| CS (Pin 5) | SPI chip select | Active-low enable for serial interface; must remain low during full 9-bit transfer to prevent corruption |
| DIN (Pin 6) | SPI data input | Serial data stream input (MSB first); carries 9-bit command including address bit A0 for pot selection |
| SCLK (Pin 7) | SPI clock input | Drives synchronous sampling of DIN; rising edge loads each bit into shift register |
| VDD (Pin 8) | Power supply | +2.7V to +5.5V analog/digital rail; requires local 0.1µF decoupling to GND per datasheet |
| WA (Pin 9) | Wiper of Resistor A | Adjustable node of 3-terminal potentiometer; used in voltage divider or reference trimming circuits |
| LA (Pin 10) | Low terminal of Resistor A | Grounded end of 3-terminal potentiometer; sets lower bound of resistive string in divider mode |
Key Features
| Feature | Design Value |
|---|---|
| Glitchless tap switching | Eliminates transient voltage spikes during wiper position changes - critical for stable op-amp biasing |
| Power-on reset (POR) | Automatically initializes both wipers to position 128 - ensures repeatable startup behavior without host MCU intervention |
| Low ratiometric tempco (5ppm/°C) | Maintains precise resistance ratio between segments over temperature - essential for gain-stable amplifier designs |
| Ultra-low 0.1µA supply current | Enables always-on calibration in energy-constrained IoT sensor nodes and portable medical devices |
| SPI-compatible 3-wire interface | Direct compatibility with standard microcontroller SPI peripherals - no protocol translation required |
Applications
| Programmable Gain Amplifier (PGA) | Adjustable Voltage Reference |
|---|---|
Use Scenario: Digitally tuning gain of a noninverting op-amp stage in an industrial sensor signal chain. IC Role / Device Role / Timing Role: MAX5403EUB-TG075 acts as a 2-terminal variable resistor in series with ground to set feedback network resistance. Use Value: Enables software-controlled gain calibration with <±1.6 LSB full-scale error and 5ppm/°C ratiometric stability over –40°C to +85°C. |
Use Scenario: Fine-adjusting output voltage of a precision bandgap reference (e.g., MAX6160) in a data acquisition front-end. IC Role / Device Role / Timing Role: MAX5403EUB-TG075 functions as a 3-terminal potentiometer in a resistive divider connected to the reference IC's ADJ pin. Use Value: Delivers <±8 LSB zero/full-scale error and stable 12.3V × C/255 output scaling (C = code), with minimal drift due to 35ppm/°C end-to-end tempco. |
| LCD Screen Contrast Adjustment | Impedance Matching Network |
Use Scenario: Replacing mechanical trimpots for contrast control in automotive-grade LCD displays. IC Role / Device Role / Timing Role: MAX5403EUB-TG075 serves as a digitally programmed voltage divider supplying bias to LCD segment drivers. Use Value: Provides 256-step resolution and guaranteed operation at –40°C to +85°C, eliminating manual calibration labor and mechanical wear-out. |
Use Scenario: Dynamically matching source/load impedance in RF front-end bias networks or audio line drivers. IC Role / Device Role / Timing Role: MAX5403EUB-TG075 operates as a 2-terminal variable resistor in series with a fixed resistor to tune total network resistance. Use Value: Achieves <±1 LSB differential nonlinearity and <100ns wiper settling - enabling real-time impedance adaptation without signal disruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ10 | 2-channel, 256-tap, I²C interface; 10kΩ end-to-end; 30ppm/°C tempco; 3V–5.5V supply | Requires I²C master instead of SPI; lacks POR to midscale; higher wiper resistance (45Ω typical) | Preferred when system already uses I²C infrastructure and POR is not mandatory |
| MCP42010-I/P | Dual 256-tap, SPI interface; 10kΩ; 100ppm/°C end-to-end tempco; 2.7V–5.5V; no POR | Higher tempco reduces gain stability over temperature; no power-on initialization; through-hole PDIP package | Acceptable for cost-sensitive, non-critical ambient-temperature applications where layout space permits DIP |
Compared with AD5243BRMZ10 and MCP42010-I/P, the MAX5403EUB-TG075 offers superior temperature stability (35ppm/°C vs. 30ppm/°C and 100ppm/°C), guaranteed POR to midscale, and lower quiescent current (0.1µA vs. 1µA and 0.5µA), making it optimal for precision, low-power, and fail-safe calibration systems.
Availability
MAX5403EUB-TG075 is available at Aetrix Electronics and suitable for programmable gain amplifiers, adjustable voltage references, LCD contrast control, and impedance matching networks requiring stable component supply across extended industrial temperature ranges.
Supply support for MAX5403EUB-TG075 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX5403/MAX5404/MAX5405 family was designed specifically for digitally controlled, low-drift resistance adjustment in precision analog signal conditioning - targeting gain calibration, reference trimming, and sensor interface circuits.
FAQ
What is the guaranteed operating temperature range for MAX5403EUB-TG075?
The MAX5403EUB-TG075 is specified and guaranteed over the extended industrial temperature range of –40°C to +85°C. All electrical characteristics - including end-to-end resistance, tempco, wiper resistance, and supply current - are validated across this full range per the official Maxim datasheet Rev 2 (11/05).
Does MAX5403EUB-TG075 support true SPI communication?
MAX5403EUB-TG075 implements a 3-wire serial interface compatible with SPI protocols - using CS, SCLK, and DIN - but it is write-only and does not provide MISO output. It accepts 9-bit words (1 address + 8 data bits) with MSB-first ordering and requires CS to remain low throughout the entire transfer to avoid data corruption.
How does the power-on reset (POR) function in MAX5403EUB-TG075?
The MAX5403EUB-TG075 incorporates internal POR circuitry that automatically sets both potentiometer wipers to position 128 (midscale) upon power-up, regardless of prior state. This behavior is hardware-enforced and requires no external configuration or host MCU initialization sequence.
Can MAX5403EUB-TG075 be used in voltage divider mode with bipolar supplies?
No. MAX5403EUB-TG075 is rated for single-supply operation only (+2.7V to +5.5V). Its absolute maximum ratings specify HX/LX/WX voltages from –0.3V to (VDD + 0.3V), prohibiting negative rail usage. For bipolar applications, external level-shifting or alternative dual-supply potentiometers are required.
What is the maximum clock frequency supported by MAX5403EUB-TG075's serial interface?
The MAX5403EUB-TG075 supports a maximum SCLK frequency of 10MHz, with guaranteed timing parameters including 40ns minimum setup/hold times for DIN and CS. This allows fast reconfiguration - e.g., updating both wipers in under 2µs - while maintaining robustness against digital noise.
MAX5403EUB-TG075 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- -
- Configuration:
- -
- Number of Circuits:
- -
- Number of Taps:
- -
- Resistance (Ohms):
- -
- Interface:
- -
- Memory Type:
- -
- Voltage - Supply:
- -
- Features:
- -
- Tolerance:
- -
- Temperature Coefficient (Typ):
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
- Operating Temperature:
- -
- Resistance - Wiper (Ohms) (Typ):
- -
MAX5403EUB-TG075 FAQ
1.How can I place an order for MAX5403EUB-TG075 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5403EUB-TG075 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 MAX5403EUB-TG075 reliable?
The price and inventory of MAX5403EUB-TG075 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5403EUB-TG075 is usually 5 days.
3.What payment methods are accepted for MAX5403EUB-TG075?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5403EUB-TG075 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5403EUB-TG075?
MAX5403EUB-TG075 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5403EUB-TG075 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 MAX5403EUB-TG075?
For technical support, including MAX5403EUB-TG075 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5403EUB-TG075 requirements.
6.How does Aetrix verify that MAX5403EUB-TG075 is sourced from the original manufacturer or authorized distributors?
All MAX5403EUB-TG075 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 MAX5403EUB-TG075 meets industry standards.
7.What is the process for return or replacement of MAX5403EUB-TG075?
All MAX5403EUB-TG075 units undergo pre-shipment inspection (PSI). If there is an issue with MAX5403EUB-TG075, 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 MAX5403EUB-TG075 part is unused and in its original packaging.
Return procedure for MAX5403EUB-TG075:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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