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Analog Devices Inc./Maxim Integrated MAX1296AEEG+
- Part No.:
- MAX1296AEEG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1296AEEG+.pdf
- Description:
- IC ADC 12BIT 420KSPS 24-QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,891
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Product details
Overview
MAX1296AEEG+ from Maxim Integrated is a 12-bit, 420ksps successive-approximation ADC with integrated +2.5V reference, single +5V supply operation, and parallel 12-bit interface. It supports 2-channel single-ended or 1-channel pseudo-differential analog input configurations, software-selectable unipolar/bipolar mode, and fast 2µs wake-up from shutdown - ideal for portable patient monitoring and industrial data-acquisition systems requiring low power and compact footprint.
For engineers reviewing the MAX1296AEEG+ datasheet, MAX1296AEEG+ pinout, MAX1296AEEG+ application, or MAX1296AEEG+ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The MAX1296AEEG+ implements a SAR architecture with an internal 6MHz full-power bandwidth track/hold stage and on-chip clock generation. Its control byte (D7–D0) configures acquisition mode (internal/external), input polarity (unipolar/bipolar), signal topology (single-ended/pseudo-differential), channel selection (CH0/CH1), and power-down state (full/standby/shutdown).
It features tri-state parallel output (D0–D11, INT), software-configurable reference sourcing (internal +2.5V or external), and automatic power-down between conversions - reducing supply current to 2µA in shutdown while maintaining 420ksps throughput in active mode with 2.8mA typical IDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 LSB = 610 µV at +2.5V reference for precise sensor digitization. |
| Sampling Rate | 420ksps - supports real-time capture of signals up to 350kHz full-linear bandwidth without aliasing. |
| INL / DNL | ±0.5 LSB / ±1 LSB - ensures monotonicity and <0.012% end-point linearity error across temperature. |
| Power Consumption | 2.8mA @ 420ksps, 400µA @ 10ksps, 2µA shutdown - enables battery life extension in portable medical devices. |
| Analog Input Range | 0V to +2.5V (unipolar) or ±1.25V (bipolar) - matches common sensor output spans without external level-shifting. |
| Reference | +2.5V internal bandgap (±20ppm/°C TC, ±100mV adjust range) - eliminates need for external reference IC in space-constrained designs. |
| Package | 24-pin QSOP (5.3mm × 7.2mm) - compatible with standard surface-mount assembly and fits high-density PCB layouts. |
Pinout & Package
MAX1296AEEG+ is housed in a 24-pin QSOP package with exposed pad (RoHS-compliant, moisture sensitivity level 3). Pin functions are electrically validated per Maxim's official datasheet Rev 2 (12/02).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0, CH1 | Analog Input Channels | Accept single-ended signals referenced to COM; support pseudo-differential measurement when paired (CH0–CH1). |
| COM | Analog Ground Reference | Sets zero-code voltage in single-ended mode; must remain stable to ±0.5 LSB during conversion. |
| REF, REFADJ | Reference Buffer I/O | REF outputs +2.5V internal reference (bypass with 4.7µF); REFADJ adjusts or disables internal reference. |
| CS, WR, RD | Digital Control Inputs | Enable chip select, write configuration/control byte, and read 12-bit result via parallel bus. |
| INT | Interrupt Output | Active-low open-drain flag signaling conversion completion and data readiness on D0–D11 bus. |
| D0–D11 | Three-State Data Bus | Output 12-bit result (unipolar binary / bipolar two's complement); tri-stated when CS high. |
| VDD, GND | Power Supply Terminals | Single +5V analog/digital supply; requires local 0.1µF ceramic bypass at VDD pin. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input topology | Selects 2-channel single-ended or 1-channel pseudo-differential mode via SGL/DIF bit - adapts to sensor wiring without hardware change. |
| Internal +2.5V reference with trim | Delivers ±0.5 LSB INL over -40°C to +85°C; REFADJ pin allows ±100mV fine adjustment or external reference substitution. |
| Two power-down modes | Standby (1.0mA @ 100ksps) and full shutdown (2µA) reduce average power in burst-sampling applications like energy meters. |
| Fast wake-up & acquisition | 2µs wake-up from shutdown; 2.1µs conversion time (13-clock cycle) enables rapid response to transient events. |
| Tri-state parallel interface | Direct connection to 16-bit µP data buses; INT pin simplifies interrupt-driven firmware polling without busy-wait loops. |
Applications
| Portable Patient Monitoring | Industrial Data Logging |
|---|---|
|
Use Scenario: Continuous acquisition of ECG, SpO₂, or temperature sensor outputs in handheld clinical devices. IC Role / Device Role / Timing Role: Primary ADC digitizing analog front-end signals with low-latency parallel interface and minimal power draw. Use Value: 2.8mA active current and 2µA shutdown extend battery life >72 hours; ±0.5 LSB INL ensures diagnostic-grade accuracy. |
Use Scenario: Multi-sensor environmental monitoring (voltage, current, temp) in remote industrial nodes. IC Role / Device Role / Timing Role: Central 12-bit converter interfacing with multiplexed analog inputs under µP control. Use Value: Software-selectable unipolar/bipolar mode accommodates diverse sensor ranges; 420ksps rate captures transients in motor control feedback. |
| Energy Management Systems | Touchscreen Controller Interface |
|
Use Scenario: High-precision current/voltage sampling in smart metering and power quality analyzers. IC Role / Device Role / Timing Role: Precision ADC providing metrology-grade digitization with internal reference stability. Use Value: ±20ppm/°C reference TC and 350kHz full-linear bandwidth enable accurate RMS calculation across temperature and frequency. |
Use Scenario: Digitizing resistive touchscreen panel voltages in embedded HMI systems. IC Role / Device Role / Timing Role: Low-latency ADC converting X/Y coordinate analog signals with fast wake-up for touch event detection. Use Value: 2µs wake-up and 2.1µs conversion minimize touch response latency; 24-pin QSOP eases routing in tight display module layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit parallel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1296BEEG+ | Same 24-pin QSOP package and pinout; ±1 LSB INL (vs. ±0.5 LSB for MAX1296AEEG+) | Acceptable where <0.025% linearity error is sufficient (e.g., non-critical industrial sensing) | Select MAX1296BEEG+ for cost-sensitive designs where ±1 LSB INL meets system accuracy requirements. |
| ADS7822U | 8-pin SOIC, SPI interface, 1 MSPS, +2.7V to +5.25V supply - no parallel bus or internal reference | Requires µP SPI peripheral and external reference; better suited for low-pin-count, higher-speed designs | Choose ADS7822U only if board layout favors serial interface and external reference integration is acceptable. |
Compared with MAX1296AEEG+, MAX1296BEEG+ trades 0.5 LSB linearity for lower cost in identical packaging, while ADS7822U replaces parallel simplicity with SPI flexibility and higher speed at the expense of added reference and interface complexity.
Availability
MAX1296AEEG+ is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, and energy management systems requiring stable component supply, extended temperature operation (-40°C to +85°C), and long-term production continuity.
Supply support for MAX1296AEEG+ 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 U.S.-based semiconductor company specializing in precision analog, mixed-signal, and high-reliability ICs for industrial, medical, and communications markets.
The MAX1296AEEG+ belongs to Maxim's low-power, high-accuracy data-acquisition ADC family - designed specifically for battery-operated instrumentation and space-constrained systems demanding integrated reference and parallel interface simplicity.
FAQ
What is the operating temperature range of the MAX1296AEEG+?
The MAX1296AEEG+ is rated for industrial operation from -40°C to +85°C, as confirmed by its "E" grade suffix and ordering information table. This extended range supports deployment in harsh environments such as factory automation controllers and outdoor energy meters where ambient temperatures exceed commercial limits. The device maintains ±0.5 LSB INL and stable +2.5V reference performance across this full span.
Does the MAX1296AEEG+ require an external clock source?
No - the MAX1296AEEG+ includes an internal clock generator enabling full operation with only a +5V supply and no external timing components. When configured for internal clock mode (D7=1, D6=0), it delivers a fixed 3.6µs conversion time. External clock operation (D7=1, D6=1) supports frequencies from 100kHz to 7.6MHz but is optional, not required.
How many analog input channels does the MAX1296AEEG+ support?
The MAX1296AEEG+ supports two analog input channels (CH0 and CH1) in single-ended mode, or one pseudo-differential pair (CH0–CH1) - as explicitly stated in the General Description and Pin Configurations section. Unlike the 6-channel MAX1294, the MAX1296AEEG+ is optimized for dual-sensor or differential measurement applications with minimal pin count.
Can the internal reference of the MAX1296AEEG+ be disabled?
Yes - the MAX1296AEEG+ allows disabling of its internal +2.5V reference by connecting REFADJ to VDD, as specified in the Pin Description and Electrical Characteristics tables. This enables use of a higher-precision external reference (e.g., REF5025) when system-level accuracy demands exceed the ±20ppm/°C TC and ±0.5 LSB INL of the internal reference.
What is the purpose of the COM pin on the MAX1296AEEG+?
The COM pin on the MAX1296AEEG+ serves as the analog ground reference for single-ended measurements, setting the zero-code voltage point. In pseudo-differential mode, it provides the stable return node for the negative input (IN−), and must remain within ±0.5 LSB of GND during conversion to preserve accuracy - typically achieved using a 0.1µF capacitor to GND as recommended in the datasheet.
MAX1296AEEG+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 420k
- Number of Inputs:
- 1, 2
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- Parallel
- 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:
- 24-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1296AEEG+ FAQ
1.How can I place an order for MAX1296AEEG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1296AEEG+ 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 MAX1296AEEG+ reliable?
The price and inventory of MAX1296AEEG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1296AEEG+ is usually 5 days.
3.What payment methods are accepted for MAX1296AEEG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1296AEEG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1296AEEG+?
MAX1296AEEG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1296AEEG+ 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 MAX1296AEEG+?
For technical support, including MAX1296AEEG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1296AEEG+ requirements.
6.How does Aetrix verify that MAX1296AEEG+ is sourced from the original manufacturer or authorized distributors?
All MAX1296AEEG+ 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 MAX1296AEEG+ meets industry standards.
7.What is the process for return or replacement of MAX1296AEEG+?
All MAX1296AEEG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1296AEEG+, 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 MAX1296AEEG+ part is unused and in its original packaging.
Return procedure for MAX1296AEEG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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