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Analog Devices Inc./Maxim Integrated MAX1038AEEE+T
- Part No.:
- MAX1038AEEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1038AEEE+T.pdf
- Description:
- IC ADC 8BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX1038AEEE+T from Maxim Integrated is a 12-channel, 8-bit 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 system supervision and battery-powered test equipment.
For engineers reviewing the MAX1038AEEE+T datasheet, MAX1038AEEE+T pinout, MAX1038AEEE+T application, or MAX1038AEEE+T equivalent, this page provides verified electrical specifications, QSOP-16 package mapping, I²C timing compliance (up to 1.7MHz), channel-scan FIFO operation, and real-world design implications of its 350µA active current and AutoShutdown™ power management.
Technical Context
The MAX1038AEEE+T employs successive-approximation architecture with an internal switched-capacitor DAC and on-chip track/hold circuitry. Its 12-input multiplexer supports pseudo-differential mode where only the '+' input is sampled while the '−' input must remain stable within ±0.1 LSB relative to GND.
It operates in two clock modes: internal (2.25MHz oscillator) or external (SCL-driven), with conversion time fixed at 4.7µs in external-clock mode. The device uses a 9-bit address byte (including R/W bit) and factory-set slave address 1100101, requiring HS-mode enable via master code 00001XXX to achieve full 188ksps throughput.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes; sufficient for basic sensor digitization and supervisory monitoring. |
| Total Unadjusted Error (TUE) | ±1 LSB - guarantees monotonicity and no missing codes across −40°C to +85°C industrial range. |
| Input Channels | 12 single-ended or 6 pseudo-differential - enables multi-sensor acquisition without external MUX, reducing BOM count. |
| Supply Voltage Range | 4.5V to 5.5V - compatible with standard 5V logic rails and industrial power domains. |
| Max Sampling Rate | 188ksps - supports undersampling of signals up to 2MHz bandwidth with anti-alias filtering. |
| I²C Interface Speed | Up to 1.7MHz (HS-mode) - reduces data transfer latency versus standard 400kHz Fast Mode by >4×. |
| Active Supply Current | 350µA at 188ksps - enables >10-year battery life in low-duty-cycle remote sensing applications. |
Pinout & Package
MAX1038AEEE+T is housed in a 16-pin QSOP (Quarter-Size Outline Package) with 0.65mm pitch, 5.3mm × 10.2mm body size, and exposed pad not present. This RoHS-compliant, lead-free package supports reflow soldering and offers thermal resistance (θJA) of ~120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–3, 5–7, 14–16 | AIN0–AIN10 | Analog input channels; each configurable as single-ended or pseudo-differential '+' input. |
| 4 | AIN3/REF | Configurable terminal: analog input AIN3 or reference voltage source/sink (4.096V internal ref). |
| 13 | AIN11/REF | Configurable terminal: analog input AIN11 or reference voltage source/sink (4.096V internal ref). |
| 9 | SCL | I²C clock input; controls data timing; must be pulled high; supports 400kHz Fast Mode or 1.7MHz High-Speed Mode. |
| 10 | SDA | I²C bidirectional data line; open-drain; requires external pull-up; carries configuration bytes and conversion results. |
| 11 | GND | Analog/digital ground reference; must be connected to low-impedance system ground plane. |
| 12 | VDD | Positive supply input; bypass with 0.1µF ceramic capacitor directly to GND for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ power management | Reduces supply current to <1µA between conversions-critical for intermittent sampling in solar-powered systems. |
| Internal 4.096V reference | Provides stable, temperature-compensated full-scale reference without external components; TCREF = 120ppm/°C. |
| Channel-scan FIFO | Automatically sequences through up to 12 channels in software-defined order, eliminating host CPU polling overhead. |
| Pseudo-differential input mode | Rejects common-mode noise up to 75dB (CMRR), enabling accurate measurement in electrically noisy industrial environments. |
| Software-configurable polarity | Unipolar (0 to VREF) or bipolar (±VREF/2) operation selected per conversion-supports both sensor and signal monitoring use cases. |
Applications
| Handheld Portable Applications | Battery-Powered Test Equipment |
|---|---|
|
Use Scenario: Compact multimeter measuring voltage, current, and temperature across multiple sensors using a single microcontroller. IC Role / Device Role / Timing Role: 12-channel ADC digitizing analog front-end signals with automatic channel scanning and I²C streaming to MCU. Use Value: Eliminates need for external multiplexer and reference IC, reducing PCB area by >30% and component count by 3–4 parts. |
Use Scenario: Field-deployable calibration tool acquiring thermocouple, RTD, and DC voltage readings under varying ambient conditions. IC Role / Device Role / Timing Role: Precision 8-bit digitizer with ±1 LSB TUE and 75dB CMRR rejecting EMI from nearby switching supplies. Use Value: Maintains accuracy over −40°C to +85°C without recalibration; 350µA active current extends 3.7V Li-ion battery life to >200 hours at 10ksps. |
| Solar-Powered Remote Systems | System Supervision |
|
Use Scenario: Off-grid environmental monitor logging solar panel voltage, battery SOC, and ambient temperature every 5 minutes. IC Role / Device Role / Timing Role: Low-power ADC entering AutoShutdown™ between measurements; awakened by MCU timer interrupt. Use Value: Achieves average current <2µA in duty-cycled operation-enabling >5-year deployment on a single 12Ah LiFePO₄ battery. |
Use Scenario: Industrial PLC monitoring rail voltages, fan tachometers, and temperature sensors across 12 subsystems. IC Role / Device Role / Timing Role: Centralized analog acquisition node interfacing to host controller via I²C with configurable scan sequence. Use Value: Reduces firmware complexity via hardware-managed channel sequencing; supports real-time fault detection with <5µs conversion latency. |
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, 2.7–5.25V supply, no internal reference - requires external 2.5V ref. | Limited to 4 inputs; lacks FIFO and AutoShutdown; higher interface overhead due to SPI framing. | Choose when SPI is preferred and channel count ≤4; avoid if reference integration or ultra-low quiescent current is required. |
| MAX1138EEE+ | 10-bit, 12-channel, same QSOP-16 package, 4.096V internal ref, I²C interface, 2.7–3.6V or 4.5–5.5V supply. | Higher resolution (10-bit) but lower max throughput (100ksps); identical pinout and register map - drop-in upgrade path. | Choose when improved resolution justifies 2× code density and slightly reduced speed; fully compatible layout and firmware. |
Compared with MAX1038AEEE+T, ADS7822U trades channel count and power efficiency for interface flexibility, while MAX1138EEE+ offers higher resolution with identical footprint and control architecture-making it a direct performance upgrade without PCB revision.
Availability
MAX1038AEEE+T is available at Aetrix Electronics and suitable for handheld portable applications, battery-powered test equipment, and solar-powered remote systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1038AEEE+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 industrial, medical, and communications applications.
The MAX1036–MAX1039 family targets low-power, multichannel data acquisition in space- and energy-constrained systems-emphasizing integration of reference, clock, and interface to minimize external components.
FAQ
What is the maximum sampling rate supported by the MAX1038AEEE+T?
The MAX1038AEEE+T achieves a maximum sampling rate of 188ksps when operating in I²C High-Speed Mode (1.7MHz SCL) with external clocking. This requires the master to first issue the HS-mode enable code (00001XXX), then send a repeated START and slave address. In Fast Mode (400kHz), the practical limit drops to ~44ksps due to bus timing constraints.
Does the MAX1038AEEE+T require an external reference voltage?
No, the MAX1038AEEE+T includes a factory-trimmed 4.096V internal reference with 120ppm/°C temperature coefficient. It can also operate with an external reference from 1V to VDD, but doing so disables the internal reference buffer and increases supply current by ~10µA at 188ksps. The internal reference is enabled by default at power-up (SEL[2:1] = 11).
How many analog input channels does the MAX1038AEEE+T support in pseudo-differential mode?
The MAX1038AEEE+T supports six pseudo-differential input pairs (AIN0–AIN1, AIN2–AIN3, ..., AIN10–AIN11) when configured via the SGL/DIF bit. Each pair uses one channel as the '+' input (sampled) and another as the '−' input (held stable). The device's 12-channel MUX allows flexible pairing, but only one differential conversion occurs per transaction.
What is the meaning of "AutoShutdown™" in the context of the MAX1038AEEE+T?
AutoShutdown™ is a proprietary power-saving feature of the MAX1038AEEE+T that automatically powers down the ADC core, reference buffer, and internal oscillator between conversions. When idle, it reduces supply current to less than 1µA-enabling multi-year operation in intermittently sampled applications like environmental monitors or smart meters powered by primary batteries.
Can the MAX1038AEEE+T operate from a 3.3V supply?
No, the MAX1038AEEE+T is specified only for 4.5V to 5.5V operation. Its internal 4.096V reference and analog front-end circuitry require minimum headroom above the reference voltage. Attempting 3.3V operation violates Absolute Maximum Ratings and will result in undefined behavior, failed conversions, or permanent damage. For 2.7–3.6V systems, use the pin-compatible MAX1039AEEE+T (2.048V reference).
MAX1038AEEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX1038AEEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1038AEEE+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 MAX1038AEEE+T reliable?
The price and inventory of MAX1038AEEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1038AEEE+T is usually 5 days.
3.What payment methods are accepted for MAX1038AEEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1038AEEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1038AEEE+T?
MAX1038AEEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1038AEEE+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 MAX1038AEEE+T?
For technical support, including MAX1038AEEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1038AEEE+T requirements.
6.How does Aetrix verify that MAX1038AEEE+T is sourced from the original manufacturer or authorized distributors?
All MAX1038AEEE+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 MAX1038AEEE+T meets industry standards.
7.What is the process for return or replacement of MAX1038AEEE+T?
All MAX1038AEEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1038AEEE+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 MAX1038AEEE+T part is unused and in its original packaging.
Return procedure for MAX1038AEEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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