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Analog Devices Inc./Maxim Integrated MAX1038AEEE+
- Part No.:
- MAX1038AEEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1038AEEE+.pdf
- Description:
- IC ADC 8BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:781
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Product details
Overview
MAX1038AEEE+ from Maxim Integrated is a low-power, 8-bit, 12-channel analog-to-digital converter (ADC) with integrated track/hold, 4.096V internal reference, I²C-compatible 2-wire serial interface, and operation from 4.5V to 5.5V supply. It delivers 188ksps throughput, ±1 LSB total unadjusted error (TUE), and supports software-configurable unipolar/bipolar and single-ended/pseudo-differential input modes for precision sensor monitoring in battery-constrained systems.
For engineers reviewing the MAX1038AEEE+ datasheet, MAX1038AEEE+ pinout, MAX1038AEEE+ application, or MAX1038AEEE+ equivalent, key selection considerations include its 16-pin QSOP package, 12-channel multiplexed analog input architecture, AutoShutdown™ power management down to 1µA, and compatibility with both internal and external reference voltages (1V to VDD).
Technical Context
The MAX1038AEEE+ employs successive-approximation register (SAR) conversion with an internal switched-capacitor DAC and on-chip track/hold circuitry. Its analog input mux supports 12 single-ended or 6 pseudo-differential channels, with channel selection controlled via CS[3:0] bits in the configuration register.
It operates in two clock modes: internal 2.25MHz oscillator or external SCL-driven timing, enabling flexible system synchronization. The I²C interface supports Fast Mode (400kHz) and High-Speed Mode (1.7MHz), with programmable slave address 1100101 and automatic acknowledge handling per transfer cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR ADC - delivers discrete digital output codes with 256 distinct levels per conversion. |
| Total Unadjusted Error (TUE) | ±1 LSB - ensures full-scale accuracy within ±0.39% of VREF without calibration. |
| Sampling Rate | 188 ksps - supports real-time acquisition of signals up to ~200 kHz full-linear bandwidth. |
| Supply Voltage Range | 4.5V to 5.5V - compatible with standard 5V logic and industrial power rails. |
| Internal Reference | 4.096V - provides stable, factory-trimmed reference enabling ratiometric measurement without external components. |
| Power Consumption | 350 µA at 188 ksps - enables >10-year battery life in low-duty-cycle remote sensing applications. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial environments without derating. |
Pinout & Package
MAX1038AEEE+ is housed in a 16-pin QSOP (Quarter Size Outline Package) with 0.154" body width and 0.025" lead pitch, optimized for high-density PCB layouts while maintaining hand-solderability and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–3, 5–7, 14–16 | AIN0–AIN10 | Analog input channels - support 12-channel single-ended or 6-channel pseudo-differential acquisition. |
| 4 | AIN3/REF | Configurable terminal - functions as analog input AIN3 or reference voltage source/sink depending on SEL[2:1] setup. |
| 13 | AIN11/REF | Configurable terminal - dual-role input/reference pin, enabling flexible reference routing or expanded channel count. |
| 9 | SCL | I²C clock input - controls data timing; supports Fast Mode (400kHz) and High-Speed Mode (1.7MHz). |
| 10 | SDA | I²C bidirectional data line - handles command writes, conversion result reads, and register configuration. |
| 11 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane for noise immunity. |
| 12 | VDD | Positive supply input - requires local 0.1µF ceramic bypass capacitor to GND for stable ADC operation. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ power management | Reduces supply current to <1µA between conversions - eliminates need for external enable control in intermittent sampling. |
| Integrated 4.096V reference | Factory-trimmed ±0.5% initial accuracy with 120ppm/°C tempco - removes external reference IC and reduces BOM count. |
| Software-configurable input mode | Single-ended or pseudo-differential operation selected via SGL/DIF bit - adapts to diverse sensor topologies without hardware change. |
| Internal FIFO with channel-scan mode | Enables autonomous multi-channel sequencing - offloads microcontroller during burst acquisition cycles. |
| High-speed I²C interface | 1.7MHz High-Speed Mode support - achieves 188ksps without requiring custom serial protocols or FPGA logic. |
Applications
| Handheld Portable Applications | Medical Instruments |
|---|---|
Use Scenario: Battery-powered multimeter or environmental sensor node acquiring temperature, humidity, and pressure readings every 100ms. IC Role / Device Role / Timing Role: Primary 12-channel front-end ADC performing synchronized analog digitization and I²C packetization. Use Value: 350µA active current and AutoShutdown™ extend AA battery life beyond 3 years in typical duty-cycled operation. | Use Scenario: Portable ECG monitor measuring differential lead voltages across multiple electrode pairs. IC Role / Device Role / Timing Role: Pseudo-differential ADC capturing biopotential signals with common-mode rejection >75dB. Use Value: Configurable bipolar/unipolar mode and 4.096V reference enable precise 12-bit-equivalent dynamic range within 8-bit resolution constraints. |
| Battery-Powered Test Equipment | System Supervision |
Use Scenario: Field-deployable power analyzer logging rail voltages, current shunt outputs, and thermal sensor data. IC Role / Device Role / Timing Role: Multi-channel system monitor ADC interfacing directly to microcontroller via I²C without level-shifting. Use Value: 12-channel integration eliminates external MUX and reduces PCB area by >30% versus discrete 4-channel solutions. | Use Scenario: Industrial PLC module monitoring 12 analog inputs including motor current feedback, supply rail margins, and ambient temperature. IC Role / Device Role / Timing Role: Embedded supervision ADC providing real-time fault detection through continuous channel scanning. Use Value: Internal FIFO and SCAN[1:0]-controlled channel sequencing allow deterministic 188ksps aggregate throughput across all channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit, 4-channel, SPI interface, 2.7V–5.25V supply, no internal reference | Limited to 4 inputs; requires external reference and SPI host - less suitable for I²C-based compact designs | Choose when SPI interface and minimal channel count suffice and external reference is already present. |
| MAX1138AEEE+ | 10-bit, 12-channel, same 16-pin QSOP, identical I²C interface and pinout, 4.096V reference | Higher resolution (10-bit) with same footprint and software compatibility - direct upgrade path for improved SNR | Choose when 10-bit resolution is required and layout reuse is critical; shares identical power, timing, and register map. |
Compared with ADS7822U and MAX1138AEEE+, the MAX1038AEEE+ offers optimal balance of channel density, I²C simplicity, and ultra-low power in 5V systems - whereas ADS7822U trades channels and interface convenience for SPI flexibility, and MAX1138AEEE+ upgrades resolution without changing board design or firmware.
Availability
MAX1038AEEE+ is available at Aetrix Electronics and suitable for handheld portable applications, medical instruments, and battery-powered test equipment requiring stable component supply across extended industrial temperature ranges.
Supply support for MAX1038AEEE+ 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 MAX1036–MAX1039 family was designed for ultra-low-power, multichannel data acquisition in space- and energy-constrained embedded systems - emphasizing integration, I²C simplicity, and guaranteed industrial temperature operation.
FAQ
What is the maximum sampling rate supported by the MAX1038AEEE+?
The MAX1038AEEE+ supports a maximum sampling rate of 188 ksps when operating in High-Speed Mode (1.7 MHz I²C clock) with external clocking. This rate is achievable across all 12 channels in channel-scan mode, with conversion time fixed at 4.7 µs per sample and track/hold acquisition time of 588 ns.
Does the MAX1038AEEE+ require an external reference voltage?
No, the MAX1038AEEE+ includes a factory-trimmed 4.096V internal reference with ±0.5% initial accuracy and 120 ppm/°C temperature coefficient. An external reference (1V to VDD) may be used instead, but is not required - the internal reference eliminates BOM cost and layout complexity in most 5V applications.
How many analog input channels does the MAX1038AEEE+ support, and what configurations are available?
The MAX1038AEEE+ supports 12 analog input channels. These can be configured as 12 single-ended inputs or 6 pseudo-differential pairs using the SGL/DIF bit in the configuration register. In pseudo-differential mode, the '–' input must remain stable within ±0.1 LSB relative to GND during conversion.
What power-saving features does the MAX1038AEEE+ implement?
The MAX1038AEEE+ implements AutoShutdown™, reducing supply current to less than 1 µA between conversions. At lower throughput rates (e.g., 10 ksps), current drops to 8 µA; at 1 ksps, it falls to 2 µA. This feature is fully automatic and requires no host intervention, making it ideal for battery-operated wake-on-event architectures.
Is the MAX1038AEEE+ pin-compatible with other devices in the MAX1036–MAX1039 family?
Yes, the MAX1038AEEE+ shares identical 16-pin QSOP packaging and pinout with MAX1039AEEE+, differing only in internal reference voltage (4.096V vs. 2.048V). It is not pin-compatible with the 8-pin SOT23-packaged MAX1036/MAX1037 variants due to different channel count and package geometry.
MAX1038AEEE+ 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:
- 8
- Sampling Rate (Per Second):
- 188k
- Number of Inputs:
- 6, 12
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- 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:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1038AEEE+ FAQ
1.How can I place an order for MAX1038AEEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1038AEEE+ 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 MAX1038AEEE+ reliable?
The price and inventory of MAX1038AEEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1038AEEE+ is usually 5 days.
3.What payment methods are accepted for MAX1038AEEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1038AEEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1038AEEE+?
MAX1038AEEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1038AEEE+ 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 MAX1038AEEE+?
For technical support, including MAX1038AEEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1038AEEE+ requirements.
6.How does Aetrix verify that MAX1038AEEE+ is sourced from the original manufacturer or authorized distributors?
All MAX1038AEEE+ 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 MAX1038AEEE+ meets industry standards.
7.What is the process for return or replacement of MAX1038AEEE+?
All MAX1038AEEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1038AEEE+, 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 MAX1038AEEE+ part is unused and in its original packaging.
Return procedure for MAX1038AEEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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