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Analog Devices Inc./Maxim Integrated MAX1067BEEE+
- Part No.:
- MAX1067BEEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1067BEEE+.pdf
- Description:
- IC ADC 14BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:693
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Product details
Overview
The MAX1067BEEE+ from Maxim Integrated is a 14-bit, 4-channel, 200ksps successive-approximation ADC with integrated +4.096V reference, internal oscillator, SPI/QSPI/MICROWIRE-compatible interface, and AutoShutdown™ power management. It operates from a single +5V analog supply and supports digital logic levels from +2.7V to +5.5V. Its ±1 LSB INL, 4MHz input bandwidth, and -40°C to +85°C extended temperature range make it suitable for industrial I/O modules and thermocouple measurement systems.
For engineers reviewing the MAX1067BEEE+ datasheet, MAX1067BEEE+ pinout, MAX1067BEEE+ application, or MAX1067BEEE+ equivalent, key selection criteria include its guaranteed ±1 LSB INL over extended temperature, 16-pin QSOP package, 4-channel multiplexer architecture, low-power operation (185µA at 10ksps), and compatibility with both internal and external reference configurations.
Technical Context
The MAX1067BEEE+ implements a successive-approximation register (SAR) ADC core with integrated track-and-hold, supporting both internal clock (3.2–4.0MHz) and external clock (up to 9MHz) operation. Its 4-channel analog multiplexer feeds into a single SAR converter, enabling sequential or continuous conversion of selected inputs in scan mode.
It features dual-reference capability: a factory-trimmed +4.096V internal reference (±25ppm/°C TC, 5ms wake-up) or external reference (3.8V to AVDD). The SPI/QSPI/MICROWIRE serial interface uses 3-wire communication (CS, SCLK, DIN/DOUT) with EOC signaling and supports unipolar MSB-first data output in either 8-bit or 16-bit transfer modes - though 16-bit mode is exclusive to the MAX1068 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete output codes for high-precision sensor digitization |
| INL (max) | ±1 LSB - ensures monotonicity and ≤0.006% full-scale linearity error across -40°C to +85°C |
| Sample Rate | 200ksps - supports real-time capture of signals up to 10kHz bandwidth (SINAD >81dB) |
| Reference | +4.096V internal (±0.054V tolerance) or external (3.8V to AVDD) - enables flexible scaling for 0–VREF input range |
| Supply Current | 3.6mA at 200ksps (AVDD = DVDD = +5V), 185µA at 10ksps - enables battery-powered or energy-constrained designs |
| Input Bandwidth | 4MHz - allows accurate sampling of fast transients and supports undersampling of higher-frequency periodic signals |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive under-hood environments without derating |
Pinout & Package
MAX1067BEEE+ is housed in a 16-pin QSOP (Quad Small Outline Package) with 0.154" body width and standard 0.025" lead pitch. Pin 1 is marked by a dot or bevelled corner; pin numbering proceeds counterclockwise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DOUT | Serial data output - tri-state, MSB-first, active-low CS enables output; timing referenced to SCLK falling edge (SPI) or rising edge (DSP) |
| 2 | SCLK | Serial clock input - drives conversion timing and data transfer; supports external clock up to 9MHz or internal oscillator (≈4MHz) |
| 3 | DIN | Serial command/data input - configures control register and initiates conversions; sampled on SCLK rising edge in SPI mode |
| 4 | EOC | End-of-conversion flag - logic low indicates valid result ready at DOUT in internal clock mode; remains high in external clock mode |
| 5–8 | AIN0–AIN3 | Analog input channels - 4-channel single-ended multiplexer; each accepts 0 to VREF input with 45pF input capacitance |
| 9 | REF | Reference voltage node - connects to internal +4.096V ref or external source; requires 10µF bypass to AGND |
| 10 | REFCAP | Internal reference bypass - connects 0.1µF capacitor to AGND when using internal reference; disabled in external reference mode |
| 11,12 | AGND | Analog ground - star-ground connection point for AVDD return and analog signal references; must be isolated from DGND |
| 13 | AVDD | Analog supply - +4.75V to +5.25V; powers ADC core, reference, and T/H; requires 0.1µF local bypass to AGND |
| 14 | CS | Active-low chip select - high state forces shutdown (0.6µA typical); falling edge initiates conversion sequence in SPI mode |
| 15 | DGND | Digital ground - return path for DVDD and digital I/O; must connect to system digital ground plane |
| 16 | DVDD | Digital supply - +2.7V to +5.25V; powers serial interface and logic; requires 0.1µF local bypass to DGND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated +4.096V reference | Factory-trimmed, ±25ppm/°C drift, 5ms wake-up - eliminates external reference IC and reduces BOM count |
| AutoShutdown™ power management | Reduces current to 185µA at 10ksps and <10µA in full shutdown - extends battery life in portable instrumentation |
| 4MHz input bandwidth with track/hold | Supports accurate digitization of fast step inputs and enables undersampling of RF signals up to ~10MHz |
| Scan mode operation | Automatically sequences through all 4 channels or continuously samples one channel - simplifies firmware for multi-sensor monitoring |
| SPI/QSPI/MICROWIRE compatibility | 3-wire interface with EOC signaling and no glue logic required - interoperable with most microcontrollers and FPGAs |
Applications
| Industrial I/O Module | Thermocouple Measurement |
|---|---|
Use Scenario: Digitizing 4 analog sensor outputs (e.g., pressure, flow, level, temperature) in a DIN-rail mounted PLC I/O card. IC Role / Device Role / Timing Role: 4-channel SAR ADC with integrated reference and SPI interface - serves as primary analog front-end for sensor signal conditioning and digitization. Use Value: Eliminates need for external reference and op-amp buffers; 16-pin QSOP footprint saves PCB area versus discrete solutions. |
Use Scenario: Cold-junction compensation and linearized thermocouple voltage reading in furnace or HVAC control systems. IC Role / Device Role / Timing Role: Precision 14-bit ADC with ±1 LSB INL and 0–4.096V input range - directly interfaces K-type thermocouple amplifier outputs. Use Value: Internal reference stability (±25ppm/°C) ensures <0.1°C measurement drift over -40°C to +85°C ambient. |
| Motor Control Feedback | Accelerometer Data Acquisition |
Use Scenario: Sampling current sense and position feedback signals in closed-loop servo drive systems. IC Role / Device Role / Timing Role: High-speed 200ksps ADC with 4MHz input bandwidth - captures transient current spikes and encoder analog outputs. Use Value: 729ns acquisition time and 3.75µs conversion time enable precise timing alignment with PWM switching cycles. |
Use Scenario: Capturing vibration signatures from MEMS accelerometers in predictive maintenance sensors. IC Role / Device Role / Timing Role: Low-noise 14-bit ADC with 84dB SNR and 86dB SFDR - resolves sub-mg acceleration changes in noisy industrial environments. Use Value: Channel-to-channel isolation >85dB prevents crosstalk between orthogonal-axis accelerometer channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPW | 16-pin TSSOP, 16-bit resolution, no integrated reference, 100ksps max, SPI-only interface | Higher resolution but lower speed and no internal reference - requires external REF and buffer circuitry | Select when absolute precision >14-bit is required and system can accommodate external reference design complexity |
| AD7946BRUZ | 16-pin TSSOP, 16-bit resolution, internal reference (4.096V), 200ksps, SPI-compatible, wider temp range (-40°C to +125°C) | Same speed and reference integration, but higher resolution and extended temperature rating | Choose for applications requiring >14-bit accuracy or operation beyond +85°C, accepting slightly higher cost and power |
Compared with the MAX1067BEEE+, the ADS8325IPW offers higher resolution but lacks integrated reference and speed, increasing design overhead; the AD7946BRUZ matches speed and reference integration while extending resolution and temperature range, making it suitable for more demanding metrology applications.
Availability
MAX1067BEEE+ is available at Aetrix Electronics and suitable for industrial process control, motor control, and data-acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1067BEEE+ 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, automotive, and communications markets.
The MAX1067BEEE+ belongs to Maxim's precision data-acquisition product line, designed specifically for space-constrained, low-power industrial sensing applications requiring integrated reference, wide temperature operation, and simple SPI interfacing.
FAQ
What is the guaranteed INL specification for MAX1067BEEE+ over temperature?
The MAX1067BEEE+ guarantees ±1 LSB integral nonlinearity (INL) over its full operating temperature range of -40°C to +85°C. This specification is confirmed in the Ordering Information table and Electrical Characteristics section of the official datasheet, distinguishing it from the ±0.5 LSB grade (MAX1067AEEE+) and ±2 LSB grade (MAX1067CEEE+).
Does MAX1067BEEE+ support 16-bit data-transfer mode like the MAX1068?
No, the MAX1067BEEE+ does not support 16-bit data-transfer mode. That feature is exclusive to the MAX1068 family, which includes the DSEL pin to select between 8-bit and 16-bit modes. The MAX1067BEEE+ only supports 8-bit-wide transfers, delivering the 14-bit result in two bytes with MSB first, as defined in its SPI timing diagrams.
Can MAX1067BEEE+ operate with an external reference below 3.8V?
No, the MAX1067BEEE+ specifies a minimum external reference voltage of 3.8V per the Electrical Characteristics table. Operation with VREF < 3.8V is outside the validated operating conditions and may cause degraded INL, increased noise, or failure to meet AC specifications such as SINAD or SFDR.
What is the maximum allowed analog input voltage for MAX1067BEEE+?
The MAX1067BEEE+ analog inputs (AIN0–AIN3) accept voltages from 0V to VREF. With the internal +4.096V reference enabled, the absolute maximum input is +4.096V. If using an external reference up to AVDD (≤+5.25V), the input range extends accordingly - but must never exceed AGND −0.3V or AVDD +0.3V to avoid damage per Absolute Maximum Ratings.
How does AutoShutdown™ reduce power in MAX1067BEEE+?
AutoShutdown™ reduces MAX1067BEEE+ supply current automatically based on sample rate: 3.6mA at 200ksps, 1.85mA at 100ksps, 185µA at 10ksps, and <10µA in full power-down mode. This dynamic scaling is implemented internally and requires no software control - simply lowering the conversion rate triggers the current reduction without changing register settings.
MAX1067BEEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-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:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1067BEEE+ FAQ
1.How can I place an order for MAX1067BEEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1067BEEE+ 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 MAX1067BEEE+ reliable?
The price and inventory of MAX1067BEEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1067BEEE+ is usually 5 days.
3.What payment methods are accepted for MAX1067BEEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1067BEEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1067BEEE+?
MAX1067BEEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1067BEEE+ 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 MAX1067BEEE+?
For technical support, including MAX1067BEEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1067BEEE+ requirements.
6.How does Aetrix verify that MAX1067BEEE+ is sourced from the original manufacturer or authorized distributors?
All MAX1067BEEE+ 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 MAX1067BEEE+ meets industry standards.
7.What is the process for return or replacement of MAX1067BEEE+?
All MAX1067BEEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1067BEEE+, 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 MAX1067BEEE+ part is unused and in its original packaging.
Return procedure for MAX1067BEEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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