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Analog Devices Inc./Maxim Integrated MAX1301BEUP+T
- Part No.:
- MAX1301BEUP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1301BEUP+T.pdf
- Description:
- IC ADC 16BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,026
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Product details
Overview
MAX1301BEUP+T from Maxim Integrated is a 16-bit, 4-channel (single-ended) or 2-channel (true differential) successive-approximation ADC operating from a single +5V analog supply and a separate +2.7V to +5.25V digital I/O supply. It delivers 115ksps throughput, ±1 LSB INL (B-grade), ±16.5V overvoltage-tolerant inputs, and software-programmable multirange input scaling - used in industrial data-acquisition systems requiring high-resolution, fault-robust analog sensing.
For engineers reviewing the MAX1301BEUP+T datasheet, MAX1301BEUP+T pinout, MAX1301BEUP+T application, or MAX1301BEUP+T equivalent, this page provides verified electrical specifications, TSSOP-20 pin mapping with circuit roles, real-world use-value context for avionics and robotics, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The MAX1301BEUP+T implements a fully differential SAR architecture with integrated track-and-hold, supporting both unipolar and bipolar signal acquisition across seven single-ended and three differential input ranges. Its analog front-end includes ±16.5V fault protection on all channels and maintains constant 17kΩ input resistance regardless of input voltage.
It uses an SPI-/QSPI-/MICROWIRE-compatible serial interface with CS, SCLK, DIN, DOUT, and SSTRB signals, and supports internal (4.096V ±1%) or external (3.800V–4.136V) reference operation. Power management includes partial power-down (1.3mA typ) and full power-down (1µA typ) modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-fidelity signal digitization in precision measurement. |
| Sample Rate | 115ksps maximum - enables real-time capture of fast transients in motor control feedback or sensor monitoring loops. |
| INL (B-grade) | ±1.0 LSB (typ), ±4 LSB (max) - ensures monotonicity and <0.006% full-scale linearity error for calibrated instrumentation. |
| Analog Input Range | Software-selectable: ±3 × VREF (±12.288V at 4.096V ref) or ±6 × VREF differential - accommodates wide dynamic range without external gain staging. |
| Overvoltage Tolerance | ±16.5V on all analog inputs - protects against field-wiring faults in industrial PLCs and 4–20mA loop interfaces. |
| Reference | Internal 4.096V ±1% (bypassed with 1µF to AGND1) or external 3.800V–4.136V - eliminates need for external precision reference in space-constrained designs. |
| Supply Current (Active) | Total 1.3mA typ in partial power-down mode - reduces system power budget in battery-backed or energy-conscious embedded DAQ. |
Pinout & Package
MAX1301BEUP+T is housed in a RoHS-compliant 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch), optimized for compact industrial PCB layouts and thermal performance up to +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AGND1) | Analog Ground 1 | Main analog reference plane; must be tied to AGND2, AGND3, DGND, DGNDO at single-point star ground near device. |
| 2–5 (CH0–CH3) | Analog Input Channels | Four single-ended or two true-differential inputs; each independently programmable for 7 unipolar/bipolar ranges. |
| 7 (CS) | Active-Low Chip Select | Enables serial interface; DOUT goes high-Z when CS high - allows multi-device SPI bus sharing. |
| 8 (DIN) | Serial Data Input | Accepts configuration bytes (e.g., channel selection, range setup) on rising SCLK edge during CS low. |
| 9 (SSTRB) | Serial Strobe Output | Rising edge indicates valid conversion result ready in external clock mode; always low in internal clock mode. |
| 10 (SCLK) | Serial Clock Input | Drives data transfer timing; supports 0.228–62µs period (up to ~4.4MHz) with 40–60% duty cycle. |
| 11 (DOUT) | Serial Data Output | Outputs 16-bit conversion result on falling SCLK edge; tri-states when CS high - no external pull-up required. |
| 12–13 (DGNDO, DGND) | Digital I/O and Core Ground | Separate ground returns isolate digital switching noise from analog section; must connect to AGND1 at single point. |
| 14–15 (DVDDO, DVDD) | Digital I/O and Core Supply | DVDDO (2.7–5.25V) powers I/O buffers; DVDD (4.75–5.25V) powers logic/memory - enables mixed-voltage interfacing. |
| 16–17 (REFCAP, REF) | Reference Control Nodes | REFCAP selects internal/external reference mode; REF accepts external ref or outputs 4.096V internal reference. |
| 18–20 (AGND3, AVDD2, AGND2) | Preamplifier Supply Path | AVDD2 powers analog front-end preamp (13.5–20mA); AGND2/AGND3 carry higher analog return current than AGND1. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel software-programmable input range | Eliminates external gain-switching circuitry; supports simultaneous acquisition of sensors with mismatched output spans (e.g., thermocouple + pressure transducer). |
| ±16.5V overvoltage tolerance on all analog inputs | Prevents latch-up or damage during hot-plug events or wiring errors in factory automation environments without external clamping diodes. |
| Internal 4.096V ±1% reference with 30ppm/°C TC | Reduces BOM count and board area vs. discrete reference ICs; meets 0.1% absolute accuracy requirements in portable test equipment. |
| SPI-/QSPI-/MICROWIRE-compatible serial interface | Direct drop-in compatibility with legacy microcontrollers (e.g., MC68HCxx, ARM Cortex-M0+) without protocol translation firmware. |
| Partial and full power-down modes | Extends battery life in wireless sensor nodes: 1.3mA active-to-sleep transition enables burst-sampling strategies with sub-µA quiescent draw. |
Applications
| Industrial Process Monitoring | Data-Acquisition Systems |
|---|---|
|
Use Scenario: Continuous logging of temperature, pressure, and flow signals from 4–20mA field transmitters in chemical plant control cabinets. IC Role / Device Role / Timing Role: Primary ADC digitizing up to four analog process variables per conversion cycle with ±16.5V fault margin. Use Value: Eliminates external protection and signal conditioning, reducing channel cost by >30% while maintaining 16-bit resolution across -40°C to +85°C. |
Use Scenario: High-accuracy benchtop multimeter or portable oscilloscope capturing transient waveforms at 115ksps. IC Role / Device Role / Timing Role: Core sampling engine with internal track-and-hold enabling precise time-aligned multi-channel acquisition. Use Value: 115ksps rate with 89dB SINAD at ±3×VREF supports 5kHz sine-wave analysis with <0.01% THD distortion floor. |
| Avionics Sensor Interfaces | Robotics Joint Feedback |
|
Use Scenario: Converting position and vibration signals from MEMS accelerometers and LVDTs in flight control surface monitoring units. IC Role / Device Role / Timing Role: Fault-tolerant ADC handling ±12.288V bipolar inputs from bridge-based sensors under EMI-rich aircraft environments. Use Value: ±16.5V overvoltage rating prevents false trips during lightning-induced transients; 75dB CMRR rejects common-mode noise on long harness runs. |
Use Scenario: Real-time torque and angle feedback from motor-mounted resolvers and Hall-effect sensors in collaborative robot joints. IC Role / Device Role / Timing Role: Dual-channel differential ADC acquiring synchronized current and position data for closed-loop servo control. Use Value: Software-configurable ±6×VREF differential range captures full resolver output swing without external amplification, improving SNR by 3dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 4-channel, 16-bit SAR ADC with integrated PGA (gain 1–128), 1MSPS max rate, 3.3V-only supply, no internal reference. | Requires external reference and level-shifting for 5V analog signals; better suited for low-latency, variable-gain applications like motor phase current sensing. | Select when programmable gain and higher speed outweigh need for ±16.5V fault tolerance and dual-supply flexibility. |
| AD7606C-16BSTZ | 8-channel, 16-bit simultaneous-sampling SAR ADC, ±10V/±5V fixed input range, 1MSPS, internal reference, 5V supply only. | Lacks software-programmable per-channel ranges and ±16.5V overvoltage protection; targets high-channel-count, synchronized acquisition (e.g., power quality analyzers). | Select when simultaneous sampling across ≥6 channels is mandatory and field-wiring fault exposure is mitigated externally. |
Compared with ADS8684IPWR and AD7606C-16BSTZ, MAX1301BEUP+T uniquely combines per-channel multirange programming, ±16.5V fault tolerance, and dual digital/analog supply support - making it optimal for ruggedized, mixed-signal industrial DAQ where wiring reliability and signal span variability are primary constraints.
Availability
MAX1301BEUP+T is available at Aetrix Electronics and suitable for industrial control systems, avionics sensor interfaces, and robotics joint feedback applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX1301BEUP+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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX1300/MAX1301 product line delivers multirange, fault-tolerant 16-bit ADCs optimized for high-reliability data acquisition in harsh environments - emphasizing configurability, robustness, and minimal external component count.
FAQ
What is the maximum sample rate of the MAX1301BEUP+T?
The MAX1301BEUP+T achieves a maximum throughput rate of 115ksps in external clock mode. This rate is confirmed in the datasheet's Electrical Characteristics table under "Byte-Wide Throughput Rate" with fSAMPLE = 114ksps (typ) at 3.5MHz SCLK. The device maintains 89dB SINAD and ±1 LSB INL at this speed when using the ±3 × VREF input range.
Does the MAX1301BEUP+T include an internal voltage reference?
Yes, the MAX1301BEUP+T integrates a precision +4.096V bandgap reference with ±1% initial accuracy and ±30ppm/°C temperature coefficient. It is enabled by bypassing the REF pin with a 1.0µF capacitor to AGND1 and setting REFCAP appropriately. The internal reference eliminates the need for external components in many portable or space-constrained designs.
What are the analog input channel configurations supported by the MAX1301BEUP+T?
The MAX1301BEUP+T supports four single-ended analog inputs (CH0–CH3) or two true-differential pairs (CH0–CH1 and CH2–CH3). Each channel is independently software-programmable for seven single-ended ranges (e.g., 0 to +3×VREF, ±3×VREF/4) and three differential ranges (e.g., ±3×VREF/2, ±6×VREF), enabling flexible sensor interfacing without hardware rework.
How does the ±16.5V overvoltage tolerance work on the MAX1301BEUP+T analog inputs?
The MAX1301BEUP+T analog inputs feature integrated back-to-back diode protection tied to AVDD2 and AGND1, allowing sustained ±16.5V input voltage without damage or latch-up. This protection operates independently per channel - a fault on one input does not affect conversions on others - critical for field-deployed industrial equipment with unpredictable wiring conditions.
What digital interface protocols does the MAX1301BEUP+T support?
The MAX1301BEUP+T implements an SPI-/QSPI-/MICROWIRE-compatible 3-wire serial interface using CS, SCLK, and DIN/DOUT lines. It supports standard mode (CS-driven frame sync), and includes SSTRB for strobe-based readout in internal clock mode. No special initialization or command sequences are required beyond standard SPI framing.
MAX1301BEUP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX1301BEUP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1301BEUP+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 MAX1301BEUP+T reliable?
The price and inventory of MAX1301BEUP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1301BEUP+T is usually 5 days.
3.What payment methods are accepted for MAX1301BEUP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1301BEUP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1301BEUP+T?
MAX1301BEUP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1301BEUP+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 MAX1301BEUP+T?
For technical support, including MAX1301BEUP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1301BEUP+T requirements.
6.How does Aetrix verify that MAX1301BEUP+T is sourced from the original manufacturer or authorized distributors?
All MAX1301BEUP+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 MAX1301BEUP+T meets industry standards.
7.What is the process for return or replacement of MAX1301BEUP+T?
All MAX1301BEUP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1301BEUP+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 MAX1301BEUP+T part is unused and in its original packaging.
Return procedure for MAX1301BEUP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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