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Analog Devices Inc./Maxim Integrated MAX1241CCPA
- Part No.:
- MAX1241CCPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX1241CCPA.pdf
- Description:
- IC ADC 12BIT SAR 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,588
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Product details
Overview
MAX1241CCPA from Maxim Integrated is a low-power, 12-bit successive-approximation ADC with 73ksps throughput, 7.5µs conversion time, and SPI/QSPI/MICROWIRE-compatible 3-wire serial interface. It operates from +2.7V to +5.25V, requires an external reference (0V to VREF input range), and targets space-constrained, battery-powered data acquisition systems.
For engineers reviewing the MAX1241CCPA datasheet, MAX1241CCPA pinout, MAX1241CCPA application, or MAX1241CCPA equivalent, this device is selected for its combination of single-supply wide-voltage operation, sub-2µA shutdown current, ±1 LSB INL accuracy at 0°C to +70°C, and compatibility with microcontroller I/O ports without level-shifting.
Technical Context
The MAX1241CCPA implements a track/hold circuit with 1.5µs acquisition time and a 12-bit SAR core clocked by an internal oscillator. Its analog input accepts signals from 0V to VREF, where VREF is externally supplied and must be stable within 10Ω output impedance and ≤250µA load capability during conversion.
Digital control uses active-low CS to initiate conversion on its falling edge, SCLK to shift out 13-bit serial frames (1 EOC bit + 12 data bits, MSB-first), and SHDN as a three-level input that enables shutdown (<2µA) or selects external reference mode when left floating. The device outputs unipolar binary codes with 610µV/LSB step size at VREF = 2.500V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR architecture delivering 4096 discrete output codes |
| Throughput Rate | 73ksps maximum sampling rate with 7.5µs conversion time |
| INL Accuracy | ±1 LSB over 0°C to +70°C temperature range |
| Supply Voltage Range | +2.7V to +5.25V - supports direct connection to Li-ion, 3.3V, and 5V rails |
| Shutdown Current | ≤2µA - enables ultra-low average power in intermittent-sampling systems |
| Reference Requirement | External VREF input (0V to VDD); no internal reference - eliminates reference drift dependency |
| Serial Interface | 3-wire SPI/QSPI/MICROWIRE-compatible; DOUT high-impedance when CS = high |
Pinout & Package
MAX1241CCPA is housed in an 8-pin plastic DIP (PDIP) package with through-hole mounting and 0.3-inch body width. Pin spacing follows standard 0.1-inch grid.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply input | Accepts +2.7V to +5.25V; powers analog and digital sections |
| AIN (Pin 2) | Analog input | Single-ended input referenced to GND; 0V to VREF range, protected to ±0.3V beyond supplies |
| SHDN (Pin 3) | Three-level shutdown control | Floating or high disables internal reference and enables external REF; low forces <2µA shutdown |
| REF (Pin 4) | Reference voltage input | Accepts external VREF (1.0V to VDD); bypass with ≥0.1µF capacitor |
| GND (Pin 5) | Analog/digital ground | Single common ground node - critical for noise-sensitive ADC performance |
| CS (Pin 6) | Active-low chip select | Falling edge initiates conversion; high places DOUT in high-impedance state |
| SCLK (Pin 7) | Serial clock input | Drives data readout up to 2.1MHz; duty cycle unrestricted if ≥200ns per phase |
| DOUT (Pin 8) | Serial data output | MSB-first unipolar output; transitions on SCLK falling edge; high-impedance when CS = high |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | +2.7V to +5.25V operation enables direct use across 3.3V and 5V systems without regulators |
| Low-Power Shutdown | ≤2µA shutdown current reduces system-level power budget in sleep-mode sensor nodes |
| Fast Track/Hold | 1.5µs acquisition time supports accurate sampling of signals with source impedances ≤1kΩ |
| Microcontroller-Friendly Interface | 3-wire serial interface connects directly to GPIO pins - no external logic or level shifters required |
| High AC Performance | 70dB SINAD and 88dB SFDR at 10kHz input enable precision measurement in instrumentation-grade designs |
Applications
| Battery-Powered Data Loggers | Isolated Industrial Sensors |
|---|---|
Use Scenario: Continuous voltage/current monitoring in remote environmental sensors powered by coin cells or Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs from thermistors, RTDs, or current shunts. Use Value: 73ksps throughput and 2µA shutdown current extend battery life to multi-year intervals while maintaining 12-bit resolution. |
Use Scenario: Signal conditioning in DIN-rail-mounted process transmitters with galvanic isolation between field-side analog inputs and controller-side digital bus. IC Role / Device Role / Timing Role: Isolated-side ADC converting sensor outputs before transmission via RS-485 or CAN. Use Value: External reference support allows precise matching to isolated reference sources, ensuring end-to-end accuracy under varying supply conditions. |
| Portable Medical Instrumentation | Factory Floor Test Equipment |
Use Scenario: Handheld ECG or pulse oximeter units requiring compact, low-noise signal chain with minimal heat generation. IC Role / Device Role / Timing Role: Front-end ADC capturing bio-potential waveforms with DC-coupled amplification. Use Value: 1.5µs track/hold acquisition and 70dB SINAD preserve waveform fidelity without oversampling or complex filtering. |
Use Scenario: Automated test fixtures performing rapid parametric measurements on PCBAs using multiplexed analog channels. IC Role / Device Role / Timing Role: Channel-scanning ADC interfaced to FPGA-based sequencer for synchronized multi-point sampling. Use Value: SPI-compatible 3-wire interface enables deterministic timing control and 73ksps channel rate without CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 2.7V–5.25V supply; 12-bit SAR; 200ksps; internal reference only; SPI-only interface | Higher speed but lacks external reference flexibility and MICROWIRE/QSPI compatibility | Select when higher throughput is prioritized and reference stability is managed centrally |
| MAX11131AUT+T | 2.7V–3.6V supply; 12-bit SAR; 500ksps; internal reference; 4-wire SPI (adds DIN) | Wider bandwidth but narrower supply range and incompatible pinout/interface signaling | Select for high-speed portable instruments where 3.3V rail is fixed and layout space permits 4-wire routing |
Compared with ADS7822U and MAX11131AUT+T, MAX1241CCPA provides unique external reference support and triple-interface compatibility (SPI/QSPI/MICROWIRE) in an 8-pin PDIP, making it optimal for legacy microcontroller integration and reference-flexible industrial designs.
Availability
MAX1241CCPA is available at Aetrix Electronics and suitable for battery-powered systems, portable data logging, isolated data acquisition, and process control applications requiring stable component supply across extended production lifecycles.
Supply support for MAX1241CCPA 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 MAX1240/MAX1241 product line delivers low-power, high-accuracy 12-bit ADCs optimized for space- and energy-constrained remote sensing and portable instrumentation.
FAQ
What is the operating temperature range for MAX1241CCPA?
The MAX1241CCPA is specified for operation from 0°C to +70°C. This commercial-grade temperature range is confirmed in the Ordering Information table, where "C" denotes the 0°C to +70°C grade, and "CPA" indicates the 8-pin PDIP package. The device maintains ±1 LSB INL and full 73ksps throughput across this range.
Does MAX1241CCPA include an internal voltage reference?
No, MAX1241CCPA does not include an internal voltage reference. It requires an external reference applied to the REF pin, as explicitly stated in the General Description and Pin Description sections. The internal 2.5V reference is exclusive to the MAX1240 family; MAX1241 variants like MAX1241CCPA rely entirely on externally supplied VREF.
What package type is used for MAX1241CCPA?
MAX1241CCPA uses an 8-pin plastic dual in-line package (PDIP) with 0.3-inch body width. This is confirmed by the "CPA" suffix in the part number and the "8 PDIP" entry in the Ordering Information table. The pin configuration matches the standard top-view layout shown in the datasheet.
Can MAX1241CCPA interface directly with a standard SPI microcontroller?
Yes, MAX1241CCPA interfaces directly with standard SPI microcontrollers. Its 3-wire serial interface is explicitly compatible with SPI, QSPI, and MICROWIRE protocols. It requires only CS, SCLK, and DOUT connections - no DIN line - and operates with CPOL = 0 and CPHA = 0 timing, matching standard SPI master configurations.
What is the maximum clock frequency supported by MAX1241CCPA's serial interface?
The MAX1241CCPA supports a maximum SCLK frequency of 2.1MHz, as specified in the Electrical Characteristics table under "SCLK Clock Frequency". This applies across the full operating temperature range and supply voltage (2.7V to 5.25V). The minimum pulse width requirement is 200ns for both high and low phases.
MAX1241CCPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 73k
- Number of Inputs:
- 1
- Input Type:
- 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
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX1241CCPA FAQ
1.How can I place an order for MAX1241CCPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1241CCPA 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 MAX1241CCPA reliable?
The price and inventory of MAX1241CCPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1241CCPA is usually 5 days.
3.What payment methods are accepted for MAX1241CCPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1241CCPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1241CCPA?
MAX1241CCPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1241CCPA 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 MAX1241CCPA?
For technical support, including MAX1241CCPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1241CCPA requirements.
6.How does Aetrix verify that MAX1241CCPA is sourced from the original manufacturer or authorized distributors?
All MAX1241CCPA 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 MAX1241CCPA meets industry standards.
7.What is the process for return or replacement of MAX1241CCPA?
All MAX1241CCPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX1241CCPA, 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 MAX1241CCPA part is unused and in its original packaging.
Return procedure for MAX1241CCPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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