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Analog Devices Inc./Maxim Integrated MAX1301BEUP+
- Part No.:
- MAX1301BEUP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1301BEUP+.pdf
- Description:
- IC ADC 16BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:565
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Product details
Overview
MAX1301BEUP+ from Maxim Integrated is a 16-bit, multirange, successive-approximation ADC with four single-ended or two true-differential analog input channels, ±16.5V overvoltage tolerance, 115ksps maximum sample rate, and software-programmable input ranges up to ±3 × VREF (±12.288V with internal 4.096V reference). It operates from a single +5V analog supply and supports 2.7V–5.25V digital I/O interfacing via SPI-/QSPI-/MICROWIRE-compatible serial interface-ideal for industrial data-acquisition systems requiring high channel density and robust signal conditioning.
For engineers reviewing the MAX1301BEUP+ datasheet, MAX1301BEUP+ pinout, MAX1301BEUP+ application, or MAX1301BEUP+ equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in avionics and robotics, confirmed alternatives with documented functional differences, and supply-chain support for volume production and long-term BOM continuity.
Technical Context
The MAX1301BEUP+ implements a fully differential SAR architecture with integrated track-and-hold, supporting both unipolar and bipolar configurations across seven single-ended and three differential input voltage ranges. Its analog front-end includes fault-tolerant input protection and constant 17kΩ input resistance independent of input voltage.
It features dual analog supplies (AVDD1/AGND1 and AVDD2/AGND2) for noise isolation, separate digital I/O supply (DVDDO/DGNDO), and flexible reference options: internal +4.096V bandgap (±1%) or external 3.800V–4.136V. Conversion timing is configurable via external clock, internal clock, or external acquisition modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision measurement resolution |
| Max Sample Rate | 115ksps - enables real-time capture of signals up to ~57.5kHz Nyquist bandwidth |
| Analog Input Channels | 4 single-ended or 2 true-differential - provides compact channel count optimized for space-constrained sensor interfaces |
| Input Voltage Range | ±3 × VREF (±12.288V typical) - supports wide dynamic range without external signal conditioning |
| Overvoltage Tolerance | ±16.5V on all inputs - protects against transients and wiring faults in industrial environments |
| Reference Options | Internal 4.096V ±1% or external 3.800V–4.136V - allows system-level accuracy trade-offs between integration and precision |
| Power-Down Current | 1µA typical in full power-down mode - enables ultra-low-power sleep states in battery-operated systems |
Pinout & Package
MAX1301BEUP+ is housed in a RoHS-compliant 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch), designed for surface-mount assembly and thermal performance in industrial temperature range (-40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND1 | Analog Ground 1 | Main analog reference ground; must be tied to AGND2, AGND3, DGND, DGNDO at single point near device |
| 2 CH0 | Analog Input Channel 0 | First single-ended or differential input; ±16.5V fault tolerant; programmable range per channel |
| 3 CH1 | Analog Input Channel 1 | Second input; independently configurable for unipolar/bipolar, single-ended/differential operation |
| 4 CH2 | Analog Input Channel 2 | Third input; supports same multirange programming as CH0 and CH1 |
| 5 CH3 | Analog Input Channel 3 | Fourth input; completes 4-channel single-ended capability or pairs with CH0–CH3 for 2 differential channels |
| 6 CS | Active-Low Chip Select | Enables serial interface; high-Z DOUT when CS high; required for SPI frame synchronization |
| 7 DIN | Serial Data Input | Accepts configuration bytes and control bits on rising SCLK edge when CS is low |
| 8 SSTRB | Serial Strobe Output | Indicates valid conversion data ready in internal clock mode; always low in external clock mode |
| 9 SCLK | Serial Clock Input | Drives data transfer timing; supports 0.272µs min period (up to ~3.7MHz) in external clock mode |
| 10 DOUT | Serial Data Output | Delivers 16-bit conversion result on falling SCLK edge; tri-states when CS high |
| 11 DGNDO | Digital I/O Ground | Return path for DVDDO; must be connected to DGND, AGND1–AGND3 at star point |
| 12 DGND | Digital Ground | Return path for DVDD; shared with DGNDO and all analog grounds for low-noise layout |
| 13 DVDDO | Digital I/O Supply | +2.7V to +5.25V supply for interface logic; decoupled with 0.1µF to DGNDO |
| 14 DVDD | Digital Supply | +4.75V to +5.25V supply for internal control logic and memory; decoupled with 0.1µF to DGND |
| 15 REFCAP | Reference Bypass Node | Selects reference mode: tied to AVDD for external ref; bypassed to AGND1 for internal 4.096V ref |
| 16 REF | Reference Buffer Output/Input | Outputs internal 4.096V or accepts external 3.800V–4.136V reference; bypassed with 1µF to AGND1 |
| 17 AGND3 | Analog Signal Ground 3 | ADC negative reference potential; must be shorted to AGND1/AGND2 for proper common-mode rejection |
| 18 AVDD2 | Analog Supply 2 | +4.75V to +5.25V supply for preamplifier stage; draws ~13.5mA typical; decoupled with 0.1µF to AGND2 |
| 19 AGND2 | Analog Ground 2 | High-current return for AVDD2; carries ~5× more current than AGND1; must be joined at star point |
| 20 AVDD1 | Analog Supply 1 | +4.75V to +5.25V supply for core ADC and T/H; draws ~3mA typical; decoupled with 0.1µF to AGND1 |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel software-programmable input ranges | Seven single-ended (e.g., 0 to ±12.288V) and three differential (e.g., ±24.576V) ranges enable mixed-signal acquisition without external gain switching |
| ±16.5V overvoltage tolerance | Integrated back-to-back diode protection on all analog inputs eliminates need for external clamping in harsh industrial environments |
| Separate DVDDO supply (2.7V–5.25V) | Allows direct interfacing with 3.3V or 5V microcontrollers without level shifters, reducing BOM and layout complexity |
| Internal +4.096V reference (±1%) | Eliminates external reference IC and associated passive components, shrinking PCB area and improving system-level accuracy stability |
| Full power-down mode (1µA) | Enables rapid wake-up from ultra-low-power state-critical for energy harvesting or battery-powered remote sensors |
| Channel-to-channel isolation >105dB | Minimizes crosstalk between active and idle channels, preserving measurement integrity in multi-sensor monitoring systems |
Applications
| Industrial Process Monitoring | Data-Acquisition Systems |
|---|---|
Use Scenario: Continuous monitoring of 4–20mA current loops from pressure, temperature, and flow sensors in PLC-based control cabinets. IC Role / Device Role / Timing Role: Primary 16-bit ADC digitizing analog sensor outputs with programmable range matching each transducer's span. Use Value: Eliminates external signal conditioning per channel; ±16.5V tolerance prevents damage from loop wiring faults or ESD events. |
Use Scenario: High-fidelity sampling of multiple analog waveforms (e.g., vibration, acoustic emission) in portable test equipment. IC Role / Device Role / Timing Role: Multichannel SAR ADC providing synchronized 115ksps throughput with low aperture jitter (100ps) for time-domain analysis. Use Value: 91dB SINAD at 5kHz enables >14-bit effective resolution-sufficient for FFT-based diagnostics without oversampling. |
| Avionics Sensor Interfaces | Robotic Joint Control |
Use Scenario: Acquisition of position feedback (LVDT/RVDT), strain gauge bridges, and environmental sensors in flight control subsystems. IC Role / Device Role / Timing Role: Fault-tolerant ADC with internal reference and isolated analog/digital supplies meeting DO-160 lightning-induced transient requirements. Use Value: Dual analog supplies (AVDD1/AVDD2) and strict ground partitioning reduce noise coupling critical for certified avionics hardware. |
Use Scenario: Real-time torque and position sensing in servo motor drives for collaborative robots with safety-critical motion control. IC Role / Device Role / Timing Role: Compact 4-channel ADC capturing motor phase currents and encoder analog backups with <1µs inter-channel skew. Use Value: Software-selectable bipolar ranges match bridge amplifier outputs; 1µA power-down enables fast sleep/wake cycles during idle joint states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 4-channel, 16-bit, 1MSPS, integrated PGA (±10.24V max input), single 5V supply only, no ±16.5V tolerance | Higher speed but lacks overvoltage protection; requires external surge suppression in industrial settings | Choose for higher throughput where input protection is handled externally and PGA flexibility is needed |
| AD7606C-4BSTZ | 4-channel, 16-bit, 1MSPS, simultaneous sampling, ±16.5V tolerance, internal reference (4.096V), but requires 2.3V–5.25V DVDD only (no DVDDO) | Simultaneous sampling eliminates inter-channel skew; larger 64-lead LQFP package vs. 20-pin TSSOP | Choose when phase-coherent acquisition across all 4 channels is mandatory, and board space permits larger footprint |
Compared with ADS8684IPWR and AD7606C-4BSTZ, the MAX1301BEUP+ uniquely combines 20-pin TSSOP compactness, independent per-channel range programming, and true ±16.5V fault tolerance on a single +5V analog supply-making it optimal for space-constrained, high-reliability industrial and avionics nodes where layout simplicity and ruggedness are prioritized over maximum sample rate.
Availability
MAX1301BEUP+ is available at Aetrix Electronics and suitable for industrial control systems, avionics sensor interfaces, and robotic joint control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX1301BEUP+ 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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX1300/MAX1301 product line delivers multirange, low-power, 16-bit SAR ADCs optimized for high-accuracy data acquisition in noisy, space-constrained environments-emphasizing fault tolerance, flexible reference options, and minimal external component count.
FAQ
What is the maximum sample rate of the MAX1301BEUP+?
The MAX1301BEUP+ achieves a maximum sample rate of 115ksps in external clock mode under standard operating conditions (VAVDD1 = VAVDD2 = VDVDD = 5V, fCLK = 3.5MHz). This rate supports accurate digitization of signals up to ~57.5kHz while maintaining 91dB SINAD for differential inputs at 5kHz. Lower rates apply in internal clock (106ksps) and external acquisition (84ksps) modes.
Does the MAX1301BEUP+ support both internal and external reference voltages?
Yes, the MAX1301BEUP+ supports either an internal +4.096V bandgap reference (±1% initial accuracy, ±30ppm/°C drift) or an external reference from 3.800V to 4.136V. Reference selection is controlled by the voltage applied to the REFCAP pin: connecting REFCAP to AVDD enables external reference mode, while bypassing REFCAP to AGND1 with 0.01µF selects internal mode.
How many analog input channels does the MAX1301BEUP+ have?
The MAX1301BEUP+ provides four single-ended analog input channels (CH0–CH3) or two true-differential analog input channels (CH0–CH1 and CH2–CH3). Each channel is independently software-configurable for seven single-ended or three differential input voltage ranges, enabling mixed-signal acquisition within a single device.
What is the overvoltage tolerance specification for the MAX1301BEUP+ analog inputs?
All analog input pins (CH0–CH3) of the MAX1301BEUP+ are rated for ±16.5V continuous overvoltage relative to AGND1. This is achieved through integrated back-to-back diode protection and ensures robust operation in industrial environments subject to wiring faults, ESD, or inductive kickback-without requiring external clamping components.
What package type and temperature range is specified for the MAX1301BEUP+?
The MAX1301BEUP+ is supplied in a lead(Pb)-free, RoHS-compliant 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch) and is fully specified for operation from -40°C to +85°C ambient temperature. This industrial-grade rating ensures reliability in factory automation, avionics, and outdoor embedded systems.
MAX1301BEUP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 115k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-PGA-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1301BEUP+ FAQ
1.How can I place an order for MAX1301BEUP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1301BEUP+ 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 MAX1301BEUP+ reliable?
The price and inventory of MAX1301BEUP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1301BEUP+ is usually 5 days.
3.What payment methods are accepted for MAX1301BEUP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1301BEUP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1301BEUP+?
MAX1301BEUP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1301BEUP+ 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 MAX1301BEUP+?
For technical support, including MAX1301BEUP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1301BEUP+ requirements.
6.How does Aetrix verify that MAX1301BEUP+ is sourced from the original manufacturer or authorized distributors?
All MAX1301BEUP+ 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 MAX1301BEUP+ meets industry standards.
7.What is the process for return or replacement of MAX1301BEUP+?
All MAX1301BEUP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1301BEUP+, 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 MAX1301BEUP+ part is unused and in its original packaging.
Return procedure for MAX1301BEUP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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