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Analog Devices Inc./Maxim Integrated MAX11603EEE+T
- Part No.:
- MAX11603EEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX11603EEE+T.pdf
- Description:
- IC ADC 8BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,528
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Product details
Overview
MAX11603EEE+T from Maxim Integrated is an 8-bit, 8-channel, low-power analog-to-digital converter with integrated track/hold, 2.048V internal reference, I²C-compatible 2-wire serial interface, and operation from a single 2.7V–3.6V supply. It delivers 188ksps throughput with 350µA supply current and supports software-configurable unipolar/bipolar and single-ended/pseudo-differential input modes. It is used in battery-powered medical instruments and portable test equipment requiring compact, low-quiescent ADCs.
For engineers reviewing the MAX11603EEE+T datasheet, MAX11603EEE+T pinout, MAX11603EEE+T application, or MAX11603EEE+T equivalent, key selection criteria include its 8-channel pseudo-differential capability, ±1 LSB total unadjusted error (TUE), 16-pin QSOP package, 2.048V internal reference, and guaranteed operation across –40°C to +85°C.
Technical Context
The MAX11603EEE+T employs successive-approximation architecture with internal track/hold and a switched-capacitor DAC. Its analog input multiplexer selects among eight single-ended or four pseudo-differential channels, with acquisition time dependent on source impedance and clock mode (internal or external).
It uses a dedicated REF pin (Pin 1) for internal/external reference selection and supports both Fast Mode (400kHz) and High-Speed Mode (1.7MHz) I²C timing. The device enters AutoShutdown™ between conversions, reducing current to <1µA at low throughput - critical for energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - provides 256 discrete output codes for moderate-precision sensing applications. |
| Input Channels | 8 single-ended or 4 pseudo-differential - enables multi-sensor monitoring without external MUX. |
| Total Unadjusted Error (TUE) | ±1 LSB - ensures end-point accuracy within ±0.4% of full-scale range with 2.048V reference. |
| Sampling Rate | 188ksps - supports real-time capture of signals up to ~200kHz full-linear bandwidth. |
| Supply Voltage | 2.7V to 3.6V - compatible with Li-ion and 3.3V logic systems without level-shifting. |
| Internal Reference | 2.048V ±120ppm/°C - stable, factory-trimmed reference enabling ratiometric or absolute measurements. |
| Power Consumption | 350µA at 188ksps; 1µA in power-down - extends battery life in portable instrumentation. |
Pinout & Package
MAX11603EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), optimized for space-constrained PCB layouts while maintaining thermal and signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | REF | Reference input/output - configured via SEL[2:1] bits; decoupled with 0.01µF capacitor when using internal reference. |
| 2–9 | AIN0–AIN7 | Analog input channels - support software-selectable single-ended or pseudo-differential pairing (e.g., AIN0+/AIN1–). |
| 10–11 | N.C. | No connection - must remain unconnected per datasheet; not internally bonded. |
| 12 | SCL | I²C clock input - accepts Fast Mode (400kHz) or High-Speed Mode (1.7MHz) timing. |
| 13 | SDA | I²C bidirectional data line - requires external pull-up resistor (≥500Ω) and supports ACK/NACK handshaking. |
| 14 | GND | Analog/digital ground - common return for reference, analog inputs, and digital interface; must be low-impedance. |
| 15 | VDD | Positive supply - bypassed to GND with 0.1µF ceramic capacitor to suppress switching noise. |
| 16 | N.C. | No connection - electrically isolated; no routing or stitching required. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ | Reduces supply current to <1µA between conversions - eliminates need for external enable control in intermittent sampling. |
| I²C High-Speed Mode | 1.7MHz clock rate - cuts conversion readout time by >4× vs. standard 100kHz I²C, improving system responsiveness. |
| Pseudo-differential Input | 4-channel mode with common-mode rejection ≥75dB - rejects shared noise in sensor bridges or thermocouple interfaces. |
| Configurable Input Range | Unipolar (0–VREF) or bipolar (±VREF/2) via BIP/UNI bit - supports both ground-referenced and differential transducer outputs. |
| Internal Track/Hold | 588ns acquisition time - enables accurate sampling of fast-rising signals without external T/H circuitry. |
Applications
| Portable Medical Sensors | Battery-Powered Test Equipment |
|---|---|
Use Scenario: Monitoring ECG electrode offsets and temperature-compensated biopotential signals in handheld diagnostic devices. IC Role / Device Role / Timing Role: 8-channel ADC digitizing analog front-end outputs with synchronized channel scanning and low-latency I²C readout. Use Value: 350µA active current and AutoShutdown™ extend single-charge battery life beyond 100 hours in clinical-grade portable units. |
Use Scenario: Capturing voltage, current, and resistance readings in handheld multimeters and calibration tools. IC Role / Device Role / Timing Role: Central ADC interfacing with precision op-amp gain stages and auto-ranging circuits via I²C. Use Value: ±1 LSB TUE and 2.048V internal reference eliminate external reference ICs, reducing BOM count and layout area. |
| Solar-Powered Remote Systems | System Supervision |
Use Scenario: Measuring panel voltage, battery SOC, and environmental temperature in off-grid solar telemetry nodes. IC Role / Device Role / Timing Role: Low-power ADC acquiring multiple sensor inputs during brief wake-up intervals powered by supercapacitors. Use Value: 1µA shutdown current and 2.7V minimum supply allow operation directly from partially charged LiFePO₄ cells. |
Use Scenario: Monitoring rail voltages, fan tachometers, and thermal diodes in industrial embedded controllers. IC Role / Device Role / Timing Role: System health monitor ADC scanning 8 supply rails and sensors in background polling mode. Use Value: Internal FIFO and channel-scan mode enable autonomous multi-channel acquisition without CPU intervention. |
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, 3.3V-only supply, no internal reference - requires external 2.5V reference. | Limited to 4 inputs; lacks pseudo-differential mode and AutoShutdown™ - higher system-level power management overhead. | Select when SPI is preferred over I²C and board space allows external reference and buffering. |
| MAX11602EEE+ | Identical 16-pin QSOP package and pinout; differs only in internal reference (4.096V vs. 2.048V) and supply range (4.5–5.5V). | Requires 5V rail; unsuitable for 3.3V-only systems - but offers doubled full-scale range for high-voltage sensor interfaces. | Choose for 5V systems needing higher resolution headroom or compatibility with legacy 4.096V reference designs. |
Compared with ADS7822U and MAX11602EEE+, the MAX11603EEE+T uniquely combines 8-channel count, 2.048V reference, 2.7–3.6V operation, and I²C interface - making it optimal for compact, battery-operated 3.3V systems where channel density and power efficiency are prioritized over extended full-scale range.
Availability
MAX11603EEE+T is available at Aetrix Electronics and suitable for battery-powered test equipment, portable medical instruments, and solar-powered remote systems requiring stable component supply and long-term manufacturability.
Supply support for MAX11603EEE+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 demanding industrial, medical, and communications applications.
The MAX11600–MAX11605 family was engineered for ultra-low-power, multichannel data acquisition in space- and energy-constrained portable systems - emphasizing integration, configurability, and guaranteed industrial temperature performance.
FAQ
What is the maximum sampling rate of the MAX11603EEE+T?
The MAX11603EEE+T achieves a maximum sampling rate of 188ksps when using the external clock mode and operating at VDD = 3.3V. This rate is supported across the full industrial temperature range (–40°C to +85°C) and corresponds to a conversion time of 4.7µs per sample. At lower throughput rates (e.g., 10ksps), supply current drops to 8µA, enabling adaptive power scaling.
Does the MAX11603EEE+T require an external reference voltage?
No, the MAX11603EEE+T includes a factory-trimmed 2.048V internal reference with ±120ppm/°C temperature coefficient. It can operate fully autonomously using this reference. However, it also supports external references from 1.0V to VDD, allowing system-level calibration or ratiometric measurement flexibility - the REF pin (Pin 1) serves dual purpose based on SEL[2:1] configuration.
Can the MAX11603EEE+T perform pseudo-differential conversions?
Yes, the MAX11603EEE+T supports pseudo-differential mode across four channel pairs (e.g., AIN0+/AIN1–) via the SGL/DIF bit in the configuration byte. In this mode, only the positive input is actively sampled by the track/hold; the negative input must remain stable within ±0.5 LSB relative to GND. Common-mode rejection exceeds 75dB, making it suitable for bridge-based sensors.
What is the function of the AutoShutdown™ feature in the MAX11603EEE+T?
AutoShutdown™ automatically powers down the MAX11603EEE+T's analog and digital circuitry between conversions, reducing supply current to less than 1µA at low throughput rates. This feature eliminates the need for external sleep/wake control logic and significantly extends battery life in intermittent-sampling applications such as remote sensor nodes and handheld diagnostics.
Which package type is used for the MAX11603EEE+T?
The MAX11603EEE+T is supplied in a 16-pin QSOP (Quarter-Size Outline Package) with 0.635mm lead pitch and dimensions of 5.3mm × 10.2mm. This RoHS-compliant, lead-free package provides robust thermal performance and is compatible with standard surface-mount assembly processes - distinct from the 8-pin SOT23 used for the 4-channel MAX11601 variants.
MAX11603EEE+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:
- 4, 8
- Input Type:
- Pseudo-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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11603EEE+T FAQ
1.How can I place an order for MAX11603EEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11603EEE+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 MAX11603EEE+T reliable?
The price and inventory of MAX11603EEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11603EEE+T is usually 5 days.
3.What payment methods are accepted for MAX11603EEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11603EEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11603EEE+T?
MAX11603EEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11603EEE+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 MAX11603EEE+T?
For technical support, including MAX11603EEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11603EEE+T requirements.
6.How does Aetrix verify that MAX11603EEE+T is sourced from the original manufacturer or authorized distributors?
All MAX11603EEE+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 MAX11603EEE+T meets industry standards.
7.What is the process for return or replacement of MAX11603EEE+T?
All MAX11603EEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11603EEE+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 MAX11603EEE+T part is unused and in its original packaging.
Return procedure for MAX11603EEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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