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Analog Devices Inc./Maxim Integrated MAX174CCPI+
- Part No.:
- MAX174CCPI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
MAX174CCPI+.pdf
- Description:
- IC ADC 12BIT LOW PWR HISPD 28DIP
- Quantity:
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Product details
Overview
The MAX174CCPI+ from Maxim Integrated is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) with integrated buried-zener voltage reference and on-chip clock. It delivers 8μs maximum conversion time, ±1/2 LSB integral nonlinearity at +25°C (MAX174AC/BC grade), 150mW power dissipation at ±15V supplies, and supports pin-strappable unipolar (0 to +10V/+20V) or bipolar (±5V/±10V) input ranges. It is used in high-speed data acquisition systems requiring stable, self-contained conversion without external timing or reference components.
For engineers reviewing the MAX174CCPI+ datasheet, MAX174CCPI+ pinout, MAX174CCPI+ application, or MAX174CCPI+ equivalent, this page provides verified technical context, real-world interface timing constraints, confirmed analog input configuration options, and validated alternative parts for industrial process control and DSP front-end designs where 12-bit accuracy and 8μs throughput are critical.
Technical Context
The MAX174CCPI+ employs a successive approximation register (SAR) architecture with a 2.5kΩ-output-impedance internal DAC and zero-crossing comparator. Its conversion cycle begins with the SAR preset to mid-scale, followed by bit-by-bit comparison against the analog input using resistor-ladder feedback - 5kΩ for 10V span, 10kΩ for 20V span.
It supports three operational modes: full microprocessor interface (using CS, CE, R/C, A0, and 12/8), 8-bit bus interleave (left-justified, A0-controlled byte selection), and stand-alone mode (R/C pulse-triggered). The internal 10V reference exhibits 10ppm/°C drift and supplies up to 2mA for REFIN and BIPOFF biasing under ±15V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes with no missing codes over temperature. |
| Max Conversion Time | 8 μs - enables ≥125 kSPS sustained sampling in high-speed data acquisition systems. |
| Integral Nonlinearity | ±1/2 LSB (MAX174AC/BC grade at +25°C) - ensures monotonicity and ≤0.012% full-scale linearity error. |
| Reference Output | 10.00 V ±2 mV (no load) - precision low-drift zener source eliminates need for external reference in most applications. |
| Power Dissipation | 150 mW at ±15V - BiCMOS process reduces thermal load vs. comparable bipolar ADCs by 3×. |
| Analog Input Ranges | 0 to +10V, 0 to +20V, ±5V, or ±10V - selected via pin strapping (10VIN/20VIN/BIPOFF/REFIN), no external resistors required. |
| Digital Interface | Three-state parallel outputs (D0–D11), 8-/12-/16-bit bus compatible - supports direct connection to 8-bit microcontrollers via A0/12/8-controlled byte readout. |
Pinout & Package
MAX174CCPI+ is supplied in a 28-pin plastic DIP (PDIP) package with 0.6-inch width, lead finish matte tin, and JEDEC MS-001 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VL | Logic supply input (+4.5V to +5.5V) - powers digital core and output buffers; decoupled separately from analog rails. |
| 2 | 12/8 | Data format select - low = 8-bit bus interleave (two-byte read), high = 12-bit word output. |
| 3 | CS | Chip-select input - must be low to enable device; used with CE/R/C for full microprocessor control. |
| 4 | A0 | Byte address/short-cycle input - controls 12-bit vs. 8-bit conversion length during start; selects MSB/LSB byte during read. |
| 5 | R/C | Read/Convert control - low = initiate conversion, high = enable data read; also serves as trigger in stand-alone mode. |
| 6 | CE | Chip-enable input - high to activate device; faster propagation than CS, preferred for timing-critical convert starts. |
| 7 | VCC | Positive analog supply (+11.4V to +16.5V) - powers internal DAC, reference, and analog circuitry. |
| 8 | REFOUT | +10V reference output - low-noise, low-drift zener source; drives REFIN and BIPOFF; can supply 2mA total load. |
| 9 | AGND | Analog ground - reference point for internal reference and analog inputs; must be tied directly to system analog ground. |
| 10 | REFIN | Reference input - accepts external reference or connects to REFOUT for internal reference use. |
| 11 | VEE | Negative analog supply (−11.4V to −16.5V) - completes dual-supply rail for analog section and reference buffer. |
| 12 | BIPOFF | Bipolar offset input - tied to REFOUT for ±5V/±10V operation; enables offset binary coding. |
| 13 | 10VIN | 10V-span analog input - used with AGND for 0 to +10V or ±5V ranges; 5kΩ input impedance. |
| 14 | 20VIN | 20V-span analog input - used with AGND for 0 to +20V or ±10V ranges; 10kΩ input impedance. |
| 15 | DGND | Digital ground - return for VL, CE, CS, R/C, A0, 12/8, and data outputs; connected to AGND at single point per layout guidelines. |
| 16–27 | D0–D11 | Three-state data outputs - latched 12-bit result; output format determined by A0 and 12/8 states during read cycle. |
| 28 | STS | Status output - high during conversion, low when data valid; used for polling or interrupt generation. |
Key Features
| Feature | Design Value |
|---|---|
| Complete ADC with reference and clock | Eliminates need for external timing generator or precision reference IC - reduces BOM count and layout complexity. |
| No missing codes over temperature | Guarantees monotonic transfer function across full operating range (−40°C to +85°C for MAX174E grade), essential for closed-loop control. |
| 150ns max data access time | Enables tight timing margins in fast microprocessor interfaces - supports 8-MHz bus clocks with minimal wait states. |
| Pin-strappable input ranges | Supports four standard analog input configurations (0–10V, 0–20V, ±5V, ±10V) without external gain/offset resistors or jumpers. |
| Monolithic BiCMOS construction | Reduces power by 3× versus legacy bipolar ADCs while maintaining 12-bit accuracy - lowers thermal stress in dense PCB layouts. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensor outputs in PLC-based control cabinets. IC Role / Device Role / Timing Role: Primary ADC digitizing 4–20mA loop signals conditioned to 0–10V range, synchronized to PLC scan cycle via STS polling. Use Value: 8μs conversion time allows oversampling at >100 kSPS to suppress 50/60Hz noise; internal reference ensures long-term calibration stability without field recalibration. |
Use Scenario: Front-end digitization in portable oscilloscopes and automated test equipment capturing transient waveforms. IC Role / Device Role / Timing Role: High-fidelity analog capture stage feeding FPGA-based signal processing pipeline; triggered by external event or STS edge. Use Value: ±1/2 LSB INL preserves waveform fidelity; 150ns access time enables direct connection to 8-bit microcontrollers without glue logic. |
| Digital Signal Processing Systems | Electro-Mechanical Control Units |
|
Use Scenario: Real-time motor current and position feedback acquisition in servo drive controllers. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple analog channels (via multiplexer) into DSP memory with deterministic latency. Use Value: Stand-alone R/C-triggered mode simplifies timing integration; bipolar ±10V input supports differential current-sense amplifier outputs. |
Use Scenario: Sensor fusion in industrial robotics arms measuring joint torque, acceleration, and thermal gradients. IC Role / Device Role / Timing Role: Multi-channel ADC interfacing to isolated analog front-ends; operates in full-control mode with CE/CS handshake. Use Value: 12-bit resolution resolves sub-millivolt changes in strain gauge bridges; internal reference removes dependency on noisy system power rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX174ACWI+ | Same die, WSOIC-28 package (7.6mm × 12.8mm); identical electrical specs and timing. | Requires surface-mount assembly; better thermal performance and board space efficiency than PDIP. | Select when PCB real estate or thermal management is constrained; pin-compatible but not footprint-compatible with MAX174CCPI+. |
| AD7874KNZ | 12-bit SAR ADC with 10μs conversion time, ±2.5 LSB INL, external reference required, 28-pin PDIP. | Lacks integrated reference and clock; requires external 10V ref and timing source - increases component count and layout sensitivity. | Choose only if legacy AD7874 design reuse is mandatory; MAX174CCPI+ offers superior accuracy, lower power, and higher speed with reduced system complexity. |
Compared with MAX174ACWI+, MAX174CCPI+ offers identical performance in through-hole assembly; compared with AD7874KNZ, it integrates reference and clock to eliminate two external ICs and improve long-term drift stability by 3×.
Availability
MAX174CCPI+ is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, and electro-mechanical control units requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX174CCPI+ 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 MAX174 series belongs to Maxim's precision data acquisition product line, designed specifically for applications demanding self-contained, high-speed 12-bit conversion without external timing or reference dependencies.
FAQ
What is the operating temperature range for the MAX174CCPI+?
The MAX174CCPI+ is rated for the extended industrial temperature range of −40°C to +85°C (E-grade), as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. This makes it suitable for deployment in harsh environments such as factory automation cabinets and outdoor instrumentation enclosures where ambient temperatures exceed commercial limits.
Does the MAX174CCPI+ require external decoupling capacitors?
Yes, the MAX174CCPI+ requires dedicated decoupling: a 4.7μF tantalum capacitor in parallel with a 0.1μF ceramic capacitor on both VCC and VEE pins, referenced to AGND; and separate 0.1μF ceramics on VL and each analog input pin. These values are specified in the Power-Supply Bypassing section and are mandatory to prevent code instability due to supply noise.
Can the MAX174CCPI+ operate with ±12V supplies instead of ±15V?
Yes, the MAX174CCPI+ supports VCC = +11.4V to +16.5V and VEE = −11.4V to −16.5V, fully covering ±12V operation. However, at ±12V, the internal reference cannot drive additional external loads beyond REFIN and BIPOFF - unlike at ±15V where it supplies up to 2mA total. This is explicitly noted in the Internal Reference section.
How is bipolar input range configured on the MAX174CCPI+?
Bipolar input range (±5V or ±10V) is configured by connecting BIPOFF to REFOUT and selecting either 10VIN or 20VIN as the analog input node. No external resistors are needed - the internal trimmed resistor ladder automatically scales the transfer function to offset binary coding, as detailed in Figures 14 and 15 and Table 3 of the datasheet.
What is the purpose of the STS pin on the MAX174CCPI+?
The STS (Status) pin on the MAX174CCPI+ is an open-collector output that goes high during conversion and returns low when the 12-bit result is latched and ready for readout. It enables interrupt-driven or polled data acquisition - eliminating blind waits - and can directly drive the HOLD input of a track-and-hold amplifier when properly timed, as described in the Track-and-Hold Interface section.
MAX174CCPI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
MAX174CCPI+ FAQ
1.How can I place an order for MAX174CCPI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX174CCPI+ 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 MAX174CCPI+ reliable?
The price and inventory of MAX174CCPI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX174CCPI+ is usually 5 days.
3.What payment methods are accepted for MAX174CCPI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX174CCPI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX174CCPI+?
MAX174CCPI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX174CCPI+ 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 MAX174CCPI+?
For technical support, including MAX174CCPI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX174CCPI+ requirements.
6.How does Aetrix verify that MAX174CCPI+ is sourced from the original manufacturer or authorized distributors?
All MAX174CCPI+ 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 MAX174CCPI+ meets industry standards.
7.What is the process for return or replacement of MAX174CCPI+?
All MAX174CCPI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX174CCPI+, 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 MAX174CCPI+ part is unused and in its original packaging.
Return procedure for MAX174CCPI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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