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Analog Devices Inc./Maxim Integrated MAX1029BCEP
- Part No.:
- MAX1029BCEP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1029BCEP.pdf
- Description:
- 10-BIT 300KSPS ADCS WITH FIFO
- Quantity:
- Payment:
- Shipping:
Inventory:6,940
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Product details
Overview
MAX1029BCEP from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±1.2°C error over –40°C to +85°C), internal 2.5V reference (±30ppm/°C drift), and 16-entry FIFO. It supports 12 single-ended or 6 true-differential input channels in unipolar/bipolar modes, operates from a single +3V supply, and interfaces via 10MHz SPI/QSPI/MICROWIRE-compatible 3-wire serial port. Used in industrial control systems for multichannel voltage and temperature monitoring.
For engineers reviewing the MAX1029BCEP datasheet, MAX1029BCEP pinout, MAX1029BCEP application, or MAX1029BCEP equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts - all grounded in Maxim's official documentation and package-specific data for the 20-pin QSOP variant.
Technical Context
The MAX1029BCEP implements a fully differential successive-approximation register (SAR) ADC architecture with on-chip track-and-hold, supporting both single-ended and true-differential acquisition. Its internal oscillator enables autonomous conversion timing in clock modes 00, 01, and 10, while mode 11 accepts external SCLK up to 4.8MHz for precise 300ksps sampling.
It integrates a dedicated temperature-sensing path using the internal reference, delivering results in two's complement format at 1/8°C resolution. The 16-deep FIFO buffers conversion results and temperature readings independently, allowing burst acquisition without serial bus contention - critical for deterministic data logging in embedded supervision systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR - delivers 1024 discrete output codes with no missing codes over temperature. |
| Sampling Rate | 300ksps max - supports high-speed transient capture in system supervision and data-acquisition applications. |
| INL / DNL | ±1 LSB each - ensures monotonicity and linearity critical for closed-loop control feedback accuracy. |
| Internal Reference | 2.50V ±20mV, ±30ppm/°C - eliminates need for external precision reference in cost-sensitive industrial designs. |
| Temperature Sensor | ±1.2°C error over –40°C to +85°C - enables reliable board-level thermal monitoring without calibration. |
| Supply Current | 1.75mA at 300ksps (internal ref) - enables low-power operation in battery-backed or energy-constrained systems. |
| Digital Interface | 10MHz SPI/QSPI/MICROWIRE-compatible 3-wire - interoperable with standard microcontroller peripherals without protocol translation. |
Pinout & Package
MAX1029BCEP is housed in a 20-pin QSOP (Quad Small Outline Package) with 0.65mm pitch and exposed pad not present (unlike TQFN variants). Pin functions are validated per Maxim's Rev 5 datasheet (19-2854) and match the MAX1029-specific pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN9 | Analog Input Channels | 10 configurable single-ended inputs or 5 true-differential pairs (e.g., AIN0/AIN1); supports unipolar (0–VREF) or bipolar (±VREF/2) ranges. |
| REF-/AIN10 | Negative Reference / Analog Input | Configurable as negative input for external differential reference or as 11th analog channel (AIN10); REF- must be ≤500mV when used externally. |
| CNVST/AIN11 | Conversion Start / Analog Input | Active-low hardware trigger for conversions; doubles as 12th analog input (AIN11) when CNVST function disabled via setup register. |
| REF+ | Positive Reference Input | Accepts internal 2.5V reference or external reference up to VDD+50mV; requires 0.1μF bypass to GND for stability. |
| GND | Ground Reference | Analog and digital ground common pin - must be connected to low-impedance system ground plane to maintain INL/DNL performance. |
| VDD | Power Supply | +2.7V to +3.6V supply; bypassed with 0.1μF capacitor to minimize noise coupling into ADC core and reference. |
| SCLK | Serial Clock Input | Accepts 40–60% duty cycle clock up to 10MHz; controls data latching (DIN) and output timing (DOUT) edges. |
| CS | Chip Select | Active-low enable for serial interface; places DOUT in high-impedance state when high, enabling multi-device bus sharing. |
| DIN | Serial Data Input | Latches 8-bit command bytes (MSB first) on rising SCLK edge; used to write to conversion, setup, averaging, and mode registers. |
| DOUT | Serial Data Output | Outputs 16-bit result (MSB first) on falling SCLK edge; holds oldest FIFO entry until read; high-Z when CS = VDD. |
| EOC | End-of-Conversion Flag | Active-low open-drain signal indicating valid data ready; goes low after each conversion in clock mode 01, or after last requested result in modes 00/10. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16-entry FIFO | Enables autonomous multichannel scanning (up to 12 channels) and temperature measurement without CPU polling or interrupt overhead. |
| True differential track-and-hold | Rejects common-mode noise and DC offsets in industrial environments - essential for accurate sensor signal conditioning. |
| Internal temperature sensor | Provides board-level thermal monitoring with ±1.2°C accuracy across full industrial temperature range, independent of external components. |
| Four selectable clock modes | Supports flexible timing: hardware-triggered (CNVST), software-controlled (serial register), internally timed, or externally clocked - adapts to real-time system constraints. |
| AutoShutdown™ | Reduces supply current to <0.5μA during idle periods - extends battery life in portable data loggers and remote sensors. |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
Use Scenario: Continuous monitoring of 8–12 sensor outputs (thermocouples, RTDs, pressure transducers) in PLC I/O modules. IC Role / Device Role / Timing Role: Central multichannel ADC performing synchronized voltage and temperature sampling at 100–300ksps with FIFO buffering. Use Value: Eliminates need for external FIFO or microcontroller intervention during burst acquisition, reducing firmware complexity and jitter in control loops. |
Use Scenario: Portable ECG/SpO₂ monitor acquiring lead voltages and ambient temperature for calibration compensation. IC Role / Device Role / Timing Role: Low-power, single-supply ADC handling differential biopotential signals and on-board thermal sensing with minimal external components. Use Value: Internal 2.5V reference and ±1.2°C temp sensor enable clinical-grade accuracy without trimming or external references, meeting IEC 60601-1 leakage limits. |
| Data Logger for Environmental Sensors | Embedded System Supervision |
Use Scenario: Battery-powered field logger recording temperature, humidity (via analog output sensors), and supply rail voltages over weeks. IC Role / Device Role / Timing Role: Power-optimized ADC executing scheduled conversions with AutoShutdown between samples; stores results in FIFO for batch SPI reads. Use Value: 1.75mA active current and sub-μA shutdown current extend battery life >6 months at 10s sampling intervals - validated per typical operating characteristics (toc06/toc10). |
Use Scenario: Real-time monitoring of FPGA/ASIC core voltage, die temperature, and auxiliary rails in telecom base station control cards. IC Role / Device Role / Timing Role: System health monitor interfacing directly to host processor via SPI, providing calibrated voltage and temperature telemetry. Use Value: Channel-to-channel offset matching (±0.1 LSB) ensures consistent gain tracking across multiple supply measurements, improving fault detection reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRHBT | 12-bit resolution, 1MSPS, SPI interface, no integrated temp sensor, requires external reference. | Better resolution/speed for precision instrumentation; lacks on-chip thermal monitoring. | Select when higher resolution outweighs need for integrated temperature sensing and internal reference. |
| AD7476AARMZ | 12-bit, 1MSPS, single-channel, no FIFO, no temp sensor, internal reference only. | Lower channel count, no scan capability - suited for point-measurement rather than multichannel supervision. | Choose for cost-sensitive, single-signal applications where MAX1029BCEP's 12-channel flexibility is unnecessary. |
Compared with ADS7953IRHBT and AD7476AARMZ, the MAX1029BCEP uniquely combines 12-channel multiplexing, integrated temperature sensing, FIFO buffering, and internal reference in a single 20-pin QSOP - making it optimal for compact, self-contained system supervision where component count and thermal awareness are critical.
Availability
MAX1029BCEP is available at Aetrix Electronics and suitable for industrial process monitoring, patient vital sign acquisition, environmental data logging, and embedded system supervision requiring stable component supply across extended temperature ranges.
Supply support for MAX1029BCEP 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 industrial, medical, and communications applications - emphasizing integration, reliability, and low-power operation.
The MAX1027/MAX1029/MAX1031 family was engineered specifically for multichannel data acquisition in space-constrained, thermally variable environments - integrating ADC, FIFO, temperature sensor, and reference to reduce bill-of-materials and layout complexity.
FAQ
What is the maximum sampling rate supported by the MAX1029BCEP?
The MAX1029BCEP achieves a maximum sampling rate of 300ksps when using an external clock in clock mode 11 (CKSEL1/CKSEL0 = 11) with SCLK up to 4.8MHz. This rate is sustained across all 12 input channels in scan mode, and the device maintains ±1 LSB INL/DNL performance at full speed - verified in the Electrical Characteristics table under "Conversion Rate" and "Dynamic Specifications" sections of the datasheet.
Does the MAX1029BCEP require an external reference voltage?
No, the MAX1029BCEP includes a factory-trimmed internal 2.5V reference with ±20mV initial accuracy and ±30ppm/°C temperature coefficient - sufficient for most industrial monitoring applications. An external differential reference can be applied via REF+ and REF- pins if higher precision or custom full-scale range is needed, but the internal reference remains mandatory for temperature measurements.
How many analog input channels does the MAX1029BCEP support?
The MAX1029BCEP supports 12 single-ended analog inputs (AIN0–AIN11) or 6 true-differential input pairs (e.g., AIN0/AIN1, AIN2/AIN3, etc.). This is explicitly defined in the General Description and Pin Description sections, and confirmed by the ordering information showing MAX1029BCEP+T in 20-pin QSOP - matching the MAX1029 variant (not MAX1027 or MAX1031).
What is the accuracy of the internal temperature sensor in the MAX1029BCEP?
The internal temperature sensor in the MAX1029BCEP has a measurement error of ±1.2°C over the full –40°C to +85°C operating range, with ±0.7°C accuracy at +25°C. Temperature resolution is 1/8°C, and results are delivered in two's complement format - all specified in the "INTERNAL TEMPERATURE SENSOR" subsection of the Electrical Characteristics table.
Can the MAX1029BCEP operate from a single +3V supply?
Yes, the MAX1029BCEP is fully specified for operation from a single +2.7V to +3.6V supply, with typical performance characterized at +3V. It draws only 1.75mA at 300ksps with internal reference enabled, and features AutoShutdown™ to reduce current to under 0.5μA in idle states - making it suitable for battery-powered and low-voltage industrial systems.
MAX1029BCEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- 6, 12
- Input Type:
- Differential, Single Ended
- Data Interface:
- 3-Wire, Microwire, QSPI, 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- Internal Oscillator, Temperature Sensor
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1029BCEP FAQ
1.How can I place an order for MAX1029BCEP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1029BCEP 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 MAX1029BCEP reliable?
The price and inventory of MAX1029BCEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1029BCEP is usually 5 days.
3.What payment methods are accepted for MAX1029BCEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1029BCEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1029BCEP?
MAX1029BCEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1029BCEP 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 MAX1029BCEP?
For technical support, including MAX1029BCEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1029BCEP requirements.
6.How does Aetrix verify that MAX1029BCEP is sourced from the original manufacturer or authorized distributors?
All MAX1029BCEP 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 MAX1029BCEP meets industry standards.
7.What is the process for return or replacement of MAX1029BCEP?
All MAX1029BCEP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1029BCEP, 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 MAX1029BCEP part is unused and in its original packaging.
Return procedure for MAX1029BCEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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