My Inquiry
My Account
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:
- IC ADC 10BIT SAR 20QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:135
Please send an inquiry. Send us your inquiry, and we will respond immediately.
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), 16-entry FIFO, and internal 2.5V reference. 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. It is used in industrial control systems for real-time voltage and temperature monitoring.
For engineers reviewing the MAX1029BCEP+ datasheet, MAX1029BCEP+ pinout, MAX1029BCEP+ application, or MAX1029BCEP+ equivalent, this page delivers verified technical context, exact pin functions, confirmed ADC performance metrics (±1 LSB INL/DNL, 62dB SINAD), package mapping to 20-pin QSOP, and two validated alternative parts with documented functional and application differences.
Technical Context
The MAX1029BCEP+ implements a fully differential successive-approximation register (SAR) architecture with on-chip track-and-hold, supporting both single-ended and true differential acquisition. Its internal oscillator enables internally timed conversions in clock modes 00, 01, and 10, while clock mode 11 supports externally clocked operation up to 300ksps using SCLK.
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 data independently, allowing burst acquisition without serial bus contention - critical for deterministic sampling in embedded supervision applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC - delivers 1024 discrete output codes for precise analog digitization. |
| Sampling Rate | 300ksps maximum - supports high-speed transient capture in data-acquisition systems. |
| INL / DNL | ±1 LSB - guarantees monotonicity and no missing codes across –40°C to +85°C. |
| Temperature Accuracy | ±1.2°C over full temperature range - enables reliable system thermal monitoring without external calibration. |
| Reference | Internal 2.5V ±0.8% (2.48V–2.52V) - eliminates need for external reference component and reduces BOM count. |
| Supply Current | 1.75mA typical at 300ksps - enables low-power operation in battery-backed or energy-constrained designs. |
| SPI Interface Speed | 10MHz SCLK - allows fast readout of FIFO contents and minimizes host processor overhead. |
Pinout & Package
MAX1029BCEP+ is housed in a 20-pin QSOP (Quad Small Outline Package) with 0.65mm pitch and standard JEDEC MO-137AC footprint. The package is RoHS-compliant and lead(Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for analog and digital sections; must be connected to system ground plane. |
| 2–11 | AIN0–AIN9 | Analog input channels - configurable as 12 single-ended or 6 true differential pairs (e.g., AIN0/AIN1). |
| 12 | CNVST/AIN11 | Active-low conversion start input or analog input 11 - dual-function pin controlled by setup register. |
| 13 | REF-/AIN10 | Negative reference input or analog input 10 - used for external differential reference or additional channel. |
| 14 | REF+ | Positive reference input - accepts internal 2.5V reference or external reference up to VDD + 50mV. |
| 15 | VDD | +2.7V to +3.6V power supply - bypassed with 0.1μF capacitor to GND for noise suppression. |
| 16 | SCLK | Serial clock input - clocks data in/out; supports 40–60% duty cycle and up to 10MHz frequency. |
| 17 | CS | Active-low chip select - enables serial interface when low; places DOUT in high-impedance state when high. |
| 18 | DIN | Serial data input - latched on rising edge of SCLK; used to write setup, conversion, and averaging registers. |
| 19 | DOUT | Serial data output - outputs FIFO data MSB-first on falling edge of SCLK; tri-stated when CS = high. |
| 20 | EOC | End-of-conversion output - active-low signal indicating completion of last requested operation. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip FIFO buffer | 16-deep storage for ADC results plus one temperature reading - decouples conversion timing from host readout latency. |
| True differential T/H architecture | Supports 6 differential channel pairs with common-mode rejection - improves noise immunity in industrial environments. |
| Internal temperature sensor | ±1.2°C accuracy over –40°C to +85°C, 1/8°C resolution - enables self-monitoring without external sensors. |
| Configurable clock modes | Four selectable modes (00–11) - enables flexible triggering (CNVST pulse, internal timer, or external SCLK) for diverse system timing needs. |
| Unipolar/bipolar input support | Software-selectable ranges: 0–VREF (unipolar) or ±VREF/2 (bipolar) - accommodates both DC-coupled and AC-coupled signal sources. |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and flow sensor outputs in PLC-based control cabinets. IC Role / Device Role / Timing Role: Simultaneous 12-channel voltage digitization and on-chip temperature sensing for ambient thermal compensation. Use Value: Eliminates external multiplexer and reference ICs; FIFO enables burst sampling during communication gaps without data loss. |
Use Scenario: Portable ECG and SpO₂ monitor acquiring biopotential signals and battery/ambient temperature. IC Role / Device Role / Timing Role: Low-noise, low-power ADC with integrated temp sensor for dual-purpose signal and system health monitoring. Use Value: 1.75mA supply current at 300ksps extends battery life; ±1 LSB linearity ensures clinical-grade measurement fidelity. |
| Data Logger for Environmental Sensors | Power Supply Supervision Unit |
|
Use Scenario: Battery-powered field logger recording thermocouple, RTD, and humidity transducer outputs over extended periods. IC Role / Device Role / Timing Role: High-impedance-tolerant analog front-end with programmable acquisition time and internal reference stability. Use Value: Internal 2.5V reference (±30ppm/°C TC) maintains accuracy across temperature swings; scan mode automates multi-channel sequencing. |
Use Scenario: Real-time voltage margining and thermal derating in telecom power modules and server VRMs. IC Role / Device Role / Timing Role: Fast 300ksps sampling of rail voltages and heatsink temperature for closed-loop feedback control. Use Value: EOC signal provides deterministic interrupt timing; FIFO prevents overrun during high-frequency polling cycles. |
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. | Higher precision required; no on-chip thermal monitoring needed; design already uses external reference. | Select when resolution >10-bit and speed >300ksps are mandatory, and thermal sensing is handled separately. |
| AD7476AARMZ | 12-bit, 1MSPS, single-channel, no FIFO, no temp sensor, 2.7–5.25V supply, SPI-compatible. | Point-measurement only; no multiplexing or temperature capability; simpler layout and lower cost. | Choose for cost-sensitive, single-signal applications where multichannel and thermal features are unnecessary. |
Compared with MAX1029BCEP+, ADS7953IRHBT offers higher resolution and speed but lacks integrated temperature sensing and FIFO buffering, increasing system-level complexity. AD7476AARMZ reduces integration and cost but sacrifices channel count, on-chip intelligence, and thermal awareness - making it suitable only for basic single-input use cases.
Availability
MAX1029BCEP+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical instrumentation, and environmental data logging requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX1027/MAX1029/MAX1031 product line was designed for compact, low-power multichannel data acquisition in space-constrained embedded systems requiring integrated temperature sensing and deterministic timing.
FAQ
What is the operating temperature range for the MAX1029BCEP+?
The MAX1029BCEP+ is specified for operation from 0°C to +70°C, as indicated by the 'C' grade suffix in its ordering code. This commercial-grade temperature range is validated per the device's absolute maximum ratings and electrical characteristics tables, with all key parameters-including INL, DNL, and temperature sensor accuracy-guaranteed across this span.
Does the MAX1029BCEP+ require an external reference voltage?
No, the MAX1029BCEP+ does not require an external reference voltage. It includes a factory-trimmed internal 2.5V reference (2.48V–2.52V) with ±30ppm/°C temperature coefficient. External reference inputs (REF+/REF−) are optional and only needed when higher precision or custom reference levels are required - the internal reference remains active for temperature measurements regardless of REFSEL setting.
How many analog input channels does the MAX1029BCEP+ support?
The MAX1029BCEP+ supports 12 single-ended analog input channels (AIN0–AIN11) or 6 true differential channel pairs (e.g., AIN0/AIN1, AIN2/AIN3, etc.). This configuration is fixed per the MAX1029 family definition and confirmed in the Pin Description table and Functional Diagram - it differs from the 8-channel MAX1027 and 16-channel MAX1031 variants.
What is the purpose of the FIFO in the MAX1029BCEP+?
The FIFO in the MAX1029BCEP+ is a 16-deep buffer that stores ADC conversion results and temperature readings independently. It allows the device to perform multiple internally timed conversions - including scan sequences and temperature measurements - without host intervention. This prevents data loss during serial bus contention and enables deterministic sampling intervals in real-time embedded systems.
Can the MAX1029BCEP+ operate with a 5V supply?
No, the MAX1029BCEP+ cannot operate with a 5V supply. Its absolute maximum VDD rating is +6V, but its specified operating range is strictly +2.7V to +3.6V. Applying 5V violates the recommended operating conditions and risks parametric degradation or permanent damage, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections of the datasheet.
MAX1029BCEP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- 6, 12
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- 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:
- 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.
MAX1029BCEP+ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
