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Analog Devices Inc./Maxim Integrated MAX1454AUE/V+T
- Part No.:
- MAX1454AUE/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Sensor and Detector Interfaces
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1454AUE/V+T.pdf
- Description:
- IC PRECISION SIGNAL COND 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,386
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Product details
Overview
MAX1454AUE/V+T from Maxim Integrated is a precision analog sensor signal conditioner for automotive pressure and strain gauge systems. It delivers 16-bit offset/FSO calibration, 32-step PGA gain (6–2048 V/V), on-chip temperature sensing (8-bit ADC), 2k × 8-bit flash memory, and ±45V overvoltage/reverse-voltage protection - enabling true sensor interchangeability in AEC-Q100 Grade 1 (−40°C to +125°C) environments.
For engineers reviewing the MAX1454AUE/V+T datasheet, MAX1454AUE/V+T pinout, MAX1454AUE/V+T application, or MAX1454AUE/V+T equivalent, key selection considerations include its fully analog signal path (zero quantization noise), single-pin DIO programming interface, 85µs step response, multipoint temperature compensation via 176-entry lookup tables, and support for both voltage- and current-mode bridge excitation.
Technical Context
The MAX1454AUE/V+T implements a mixed-signal architecture: analog amplification and trimming coexist with digital control of four 16-bit DACs (offset, FSO, offset TC, FSO TC), all referenced to either VDDX (76 µV/bit) or bridge voltage VBDR (38 µV/bit). Its switched-capacitor PGA achieves input-referred offset trimming range of ±150 mV and supports 1.5°C temperature indexing resolution across −40°C to +125°C.
Calibration data is stored in 2K × 8-bit internal flash memory organized into four 512-byte pages, with dedicated segments for ODAC/FSODAC lookup tables (176 entries each), configuration registers (CONFIG1/CONFIG2), and user-programmable space. Fault detection monitors IN+/IN− against 20%/80% of VBDR and clips OUT/DIO to ~200 mV under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VDDX = 3.0–5.5 V; withstands −45 V to +45 V transients without damage |
| PGA Gain Range | 32 discrete steps from 6 V/V to 2048 V/V; enables precise scaling for 1–200 mV/V sensor outputs |
| DAC Resolution | Four independent 16-bit DACs: offset, FSO, offset TC, FSO TC - enabling <0.002% FSO trimming resolution |
| Temperature Sensing | On-chip 8-bit ADC with 1.5°C indexing resolution; outputs TEMPINDEX = 0x00 (−82°C) to 0xAF (+185°C) |
| Flash Memory | 2K × 8-bit (16-bit words stored as byte pairs); supports 10,000 write/erase cycles and 10-year data retention at +85°C |
| Step Response | 85 µs to 63% final value; ensures fast settling for dynamic pressure/strain measurements |
| Bridge Drive | Programmable current mode (0.1–2.5 mA) or voltage mode; CMRATIO configurable in 4 ratios (4.8–36 A/A) |
Pinout & Package
MAX1454AUE/V+T is housed in a 16-pin TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch), rated for AEC-Q100 Grade 1 operation (−40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 8, 16 | N.C. | No internal connection; must remain unconnected per datasheet |
| 3, 9 | GND | Analog/digital ground reference; requires low-inductance connection to PCB ground plane |
| 4 | IN+ | Positive bridge input; polarity swappable with IN− via CONFIG1 register |
| 5 | BDR | Bridge drive output; supplies programmable current/voltage to sensor bridge |
| 6 | IN− | Negative bridge input; polarity swappable with IN+ via CONFIG1 register |
| 7, 10, 11 | I.C. | Internally connected; must be tied to GND externally per layout guidelines |
| 12 | OUT/DIO | Multiplexed analog output & serial I/O; 3-state during programming; requires weak pullup |
| 13 | VDDF | Flash memory supply; must be connected directly to VDD (2.375–2.625 V) |
| 14 | VDD | LDO-regulated 2.5 V supply; bypassed with 0.1 µF capacitor to GND |
| 15 | VDDX | Primary external supply (3.0–5.5 V); bypassed with 0.1 µF capacitor to GND; protected to ±45 V |
Key Features
| Feature | Design Value |
|---|---|
| Fully analog signal path | Eliminates quantization noise; preserves sensor repeatability in high-resolution measurement systems |
| Single-pin DIO interface | Enables calibration programming and output sensing on one trace - simplifies PCB routing and reduces connector count |
| 176-point temperature compensation | Supports linear and nonlinear correction across −40°C to +125°C in 1.5°C increments using flash-based lookup tables |
| Integrated fault detection | Monitors IN+/IN− against 20%/80% of VBDR; asserts internal fault flag and clips OUT/DIO to ~200 mV in analog mode |
| Overvoltage & reverse-voltage protection | Withstands −45 V to +45 V on VDDX; eliminates need for external TVS diodes in harsh automotive environments |
Applications
| Pressure Sensors | Strain Gauges |
|---|---|
Use Scenario: High-accuracy tire pressure monitoring (TPMS) and engine manifold pressure sensing in vehicles operating across −40°C to +125°C. IC Role / Device Role / Timing Role: Signal conditioner providing amplification, 16-bit offset/FSO calibration, and real-time temperature compensation for piezoresistive pressure elements. Use Value: Enables <0.1% FSO total error over temperature without external trim components or microcontroller intervention. | Use Scenario: Structural load monitoring in automotive suspension systems and industrial weighing platforms requiring long-term stability. IC Role / Device Role / Timing Role: Analog front-end delivering ratiometric bridge excitation, PGA gain control, and multipoint temperature compensation for metal foil or silicon strain gauges. Use Value: Achieves true sensor interchangeability via factory-programmed flash coefficients - eliminating per-unit calibration labor. |
| Pressure Calibrators | Resistive Element Sensors |
Use Scenario: Portable handheld pressure calibrators used in field service and metrology labs for NIST-traceable sensor verification. IC Role / Device Role / Timing Role: Precision analog conditioning core supporting programmable bridge drive, 85 µs step response, and fault-safe output clipping. Use Value: Provides stable, repeatable output under varying ambient temperatures - critical for calibration-grade accuracy. | Use Scenario: Humidity and level sensing using resistive polymer or thermistor-based elements in HVAC and industrial process control. IC Role / Device Role / Timing Role: Universal resistive sensor interface with configurable excitation (voltage/current), wide gain range (6–2048 V/V), and integrated temperature compensation. Use Value: Accommodates sensor sensitivities from 1 mV/V to 200 mV/V while maintaining <0.01% nonlinearity across full output span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sensor signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1452AUE+ | Lacks overvoltage protection (max VDDX = 5.5 V only); no reverse-voltage tolerance; same PGA, DAC, flash architecture | Suitable for controlled industrial environments where ±45 V transients are absent | Select MAX1452AUE+ only if automotive-grade transient immunity is not required and cost optimization is prioritized |
| AD8555ARUZ | Single 16-bit DAC (not four); no internal flash memory; no temperature-indexed lookup tables; 12-bit internal ADC | Targeted at lower-cost, lower-precision applications with simpler 1st-order temperature compensation | Choose AD8555ARUZ when full multipoint calibration is unnecessary and system-level MCU handles coefficient storage |
Compared with MAX1452AUE+, MAX1454AUE/V+T adds ±45 V overvoltage/reverse-voltage robustness essential for automotive battery rail interfaces; compared with AD8555ARUZ, it integrates flash-based 176-point temperature compensation and four independent 16-bit DACs - eliminating host MCU dependency for high-accuracy sensor calibration.
Availability
MAX1454AUE/V+T is available at Aetrix Electronics and suitable for automotive pressure sensing, industrial strain gauge instrumentation, and portable calibration equipment requiring stable component supply across extended temperature ranges and harsh electrical environments.
Supply support for MAX1454AUE/V+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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on reliability, integration, and power efficiency.
The MAX1454AUE/V+T belongs to Maxim's precision sensor signal conditioning product line, engineered specifically to replace discrete op-amp/DAC/ADC combinations in automotive-grade pressure and force sensing systems - reducing bill-of-materials count while guaranteeing AEC-Q100 compliance.
FAQ
What is the absolute maximum voltage rating for MAX1454AUE/V+T on the VDDX pin?
The MAX1454AUE/V+T supports an absolute maximum VDDX rating of −45 V to +45 V, including overvoltage, undervoltage, and reverse-voltage conditions. This rating is enabled by integrated protection circuitry and allows direct connection to automotive battery rails without external TVS diodes. Operation remains functional within 3.0 V to 5.5 V, with power-on reset triggered below 2.4 V.
How does the MAX1454AUE/V+T achieve temperature compensation without a microcontroller?
The MAX1454AUE/V+T uses an on-chip 8-bit temperature ADC to generate a 1.5°C-resolution TEMPINDEX (0x00 to 0xAF), which indexes into two 176-entry flash-based lookup tables - one for offset DAC values and one for FSO DAC values. These tables are preprogrammed during calibration, allowing autonomous, real-time compensation without host processor involvement.
Can MAX1454AUE/V+T support both voltage-driven and current-driven bridge sensors?
Yes, MAX1454AUE/V+T supports both excitation modes. In voltage mode, BDR outputs a regulated voltage (0.75 V to VDDX − 0.75 V); in current mode, it sources programmable current (0.1–2.5 mA) with four selectable current-mirror ratios (4.8–36 A/A) via the CMRATIO[1:0] bits in CONFIG1 - enabling optimal drive for 2 kΩ to 10 kΩ bridge impedances.
What is the purpose of the OUT/DIO pin on MAX1454AUE/V+T?
The OUT/DIO pin serves dual functions: it delivers the conditioned analog output voltage (0.02 V to VDDX − 0.32 V) in fixed analog mode, and acts as a bidirectional serial interface (3-state, weak pullup required) for calibration programming in digital mode. Its time-multiplexed design eliminates the need for separate analog output and programming pins.
Does MAX1454AUE/V+T require external passive components for basic operation?
No, MAX1454AUE/V+T requires only three external capacitors: 0.1 µF on VDD to GND, 0.1 µF on VDDX to GND, and 0.1 µF on VDDF to GND. All trimming, gain setting, bridge drive, and temperature compensation are handled internally - no external resistors, potentiometers, or trim caps are needed for full functionality.
MAX1454AUE/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sensor Conditioner
- Input Type:
- -
- Output Type:
- -
- Current - Supply:
- 2.5 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX1454AUE/V+T FAQ
1.How can I place an order for MAX1454AUE/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1454AUE/V+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 MAX1454AUE/V+T reliable?
The price and inventory of MAX1454AUE/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1454AUE/V+T is usually 5 days.
3.What payment methods are accepted for MAX1454AUE/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1454AUE/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1454AUE/V+T?
MAX1454AUE/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1454AUE/V+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 MAX1454AUE/V+T?
For technical support, including MAX1454AUE/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1454AUE/V+T requirements.
6.How does Aetrix verify that MAX1454AUE/V+T is sourced from the original manufacturer or authorized distributors?
All MAX1454AUE/V+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 MAX1454AUE/V+T meets industry standards.
7.What is the process for return or replacement of MAX1454AUE/V+T?
All MAX1454AUE/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1454AUE/V+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 MAX1454AUE/V+T part is unused and in its original packaging.
Return procedure for MAX1454AUE/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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