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Analog Devices Inc./Maxim Integrated MAX1174BCUP+
- Part No.:
- MAX1174BCUP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
MAX1174BCUP+.pdf
- Description:
- IC ADC 14BIT 135KSPS 20-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,738
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Product details
Overview
MAX1174BCUP+ from Maxim Integrated is a 14-bit, 135ksps successive-approximation ADC with ±5V bipolar analog input range, single +4.75V to +5.25V analog supply, and byte-wide parallel interface. It features factory-trimmed internal +4.096V reference, ±1LSB INL (max), and AutoShutdown™ reducing current to 0.5µA (typ) between conversions - ideal for precision industrial data-acquisition systems requiring low power and high DC accuracy.
For engineers reviewing the MAX1174BCUP+ datasheet, MAX1174BCUP+ pinout, MAX1174BCUP+ application, or MAX1174BCUP+ equivalent, key selection criteria include its ±5V input range compatibility, TSSOP-20 package footprint, 4.7µs max conversion time, and support for both internal/external reference configurations in battery-powered or space-constrained instrumentation designs.
Technical Context
The MAX1174BCUP+ implements a SAR architecture with integrated track-and-hold and input scaler enabling true ±5V bipolar operation from a single +5V analog supply. Its internal +4.096V reference is buffered and adjustable via REFADJ, with 35ppm/°C tempco and 4.056V–4.136V output tolerance.
Power management is controlled via R/C pin sequencing across CS falling edges: second edge selects standby (reference on, 3.7mA typ) or shutdown (reference off, 0.5µA typ); third edge enables data readout. HBEN toggles D0–D7 (low byte) or D8–D13 (high byte) on the parallel bus, with D13 as MSB and D0 as LSB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 distinct digital codes over full-scale range |
| Sampling Rate | 135ksps - supports real-time acquisition of signals up to ~67kHz Nyquist bandwidth |
| Analog Input Range | ±5V - enables direct interfacing with bipolar sensor outputs without external level-shifting |
| INL / DNL | ±1LSB (max) - ensures monotonicity and ≤0.006% full-scale linearity error for precision measurement |
| Conversion Time | 4.7µs (max) - defines minimum inter-conversion interval and system throughput latency |
| Supply Current | 5.2mA (typ, internal ref, 135ksps) - determines thermal load and battery life in portable applications |
| Reference Voltage | +4.096V (internal, ±40mV tolerance) - matches 14-bit code count (16384) for 250µV/LSB scaling |
Pinout & Package
MAX1174BCUP+ is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP), 4.4mm × 6.5mm body, 0.65mm pitch, exposed pad optional. Thermal performance supports operation at -40°C to +85°C (E-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 17–20 (D4/D12 to D0/D8) | Three-state parallel data output | D0–D7 = low byte; D8–D13 = high byte (D13 = MSB); high-Z during acquisition/conversion |
| 5 (R/C) | Read/Convert control | Configures standby/shutdown mode on second CS fall; enables data read on third CS fall |
| 6 (EOC) | End-of-conversion flag | Active-low signal indicating valid data ready for bus readout |
| 7 (AVDD), 16 (DVDD) | Analog/digital supply inputs | AVDD: +4.75V to +5.25V; DVDD: +2.7V to +5.25V - allows mixed-voltage logic interfacing |
| 8, 10 (AGND), 15 (DGND) | Analog/digital ground terminals | Separate AGND (pins 8,10) and DGND (pin 15) require star grounding near device for noise isolation |
| 9 (AIN) | Analog input | ±5V bipolar input with 10pF capacitance and ±1.8mA fault current limit |
| 11 (REFADJ) | Reference buffer adjust | Connect to AVDD to disable internal buffer; sink/source current for fine-tuning internal reference |
| 12 (REF) | Reference I/O | Outputs +4.096V (internal mode); accepts 3.8V–4.2V external reference (buffered mode) |
| 13 (HBEN) | High-byte enable | Logic-high selects D8–D13 on bus; logic-low selects D0–D7 - enables byte-wise microprocessor reads |
| 14 (CS) | Convert start | First fall powers up and initiates acquisition; second fall starts conversion; third fall loads data |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar ±5V input range | Eliminates need for external op-amp level-shifting circuitry when interfacing with ±5V sensors or transducers |
| Factory-trimmed +4.096V internal reference | Provides stable, calibrated reference without external components - reduces BOM count and layout area |
| AutoShutdown™ mode (0.5µA) | Extends battery life in intermittent-sampling applications by powering down reference and buffer between conversions |
| Byte-wide parallel interface | Enables direct connection to 8-bit microcontrollers via two read cycles - avoids serial protocol overhead and timing complexity |
| Single +5V analog supply operation | Simplifies power design by removing need for dual-rail supplies while supporting true bipolar input scaling |
Applications
| Industrial Process Control | Precision Instrumentation |
|---|---|
Use Scenario: Monitoring thermocouple or strain-gauge outputs in PLC analog input modules with cold-junction compensation. IC Role / Device Role / Timing Role: Primary ADC converting conditioned ±5V sensor signals into 14-bit digital values synchronized to controller scan cycle. Use Value: ±1LSB INL ensures <0.006% full-scale error across temperature, critical for regulatory compliance in process automation. | Use Scenario: High-resolution voltage measurement in portable multimeters or calibration standards. IC Role / Device Role / Timing Role: Core digitizer capturing stable DC/low-frequency signals with minimal quantization and harmonic distortion. Use Value: THD = –100dB and SNR = 85dB enable accurate spectral analysis and metrology-grade readings. |
| Data-Acquisition Systems | I/O Modules |
Use Scenario: Modular DAQ cards acquiring multiple ±5V channels in test benches for automotive ECU validation. IC Role / Device Role / Timing Role: Channel-specific ADC with parallel interface for low-latency, deterministic sampling in multi-channel synchronized capture. Use Value: 4.7µs conversion time and 135ksps rate support tight timing budgets in automated test equipment. | Use Scenario: DIN-rail mounted remote I/O units receiving ±5V field signals from pressure transmitters in oil & gas facilities. IC Role / Device Role / Timing Role: Isolated analog front-end ADC operating in extended temperature range (–40°C to +85°C). Use Value: TSSOP-20 package and robust input protection (±16.5V absolute max) ensure reliability in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit resolution, SPI interface, 100ksps, single +3V supply, no internal reference | Higher resolution but serial interface increases MCU overhead; requires external reference and level-shifting for ±5V inputs | Choose for higher precision where SPI is acceptable and external reference is already present |
| AD7940BRMZ | 14-bit, 100ksps, SPI interface, ±10V input range, internal reference, +5V supply | Wider input range but slower sampling; lacks byte-wide parallel interface and AutoShutdown™ | Choose when ±10V range is required and microcontroller has SPI resources but limited GPIO |
Compared with ADS8860IDRCT and AD7940BRMZ, the MAX1174BCUP+ uniquely combines ±5V bipolar input, byte-wide parallel interface, and sub-µA shutdown current - making it optimal for cost-sensitive, low-power, microcontroller-based DAQ systems needing rapid parallel data access without external reference components.
Availability
MAX1174BCUP+ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and data-acquisition systems requiring stable component supply, extended temperature operation, and long-term manufacturing continuity.
Supply support for MAX1174BCUP+ 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 MAX1156/MAX1158/MAX1174 family targets high-performance, low-power data-acquisition systems where single-supply operation, bipolar input capability, and integrated reference simplify front-end design.
FAQ
What is the analog input voltage range supported by the MAX1174BCUP+?
The MAX1174BCUP+ supports a ±5V bipolar analog input voltage range. This allows direct connection to sensors and transducers with symmetric output swings without external level-shifting circuitry. The input stage includes an internal scaler and protection limiting current to ±1.8mA, and absolute maximum rating is ±16.5V relative to AGND. This range is fixed per device variant and confirmed in the Electrical Characteristics table under "Input Range" for MAX1174.
Does the MAX1174BCUP+ include an internal voltage reference, and what is its accuracy?
Yes, the MAX1174BCUP+ includes a factory-trimmed internal voltage reference outputting +4.096V at the REF pin. Its accuracy is specified as 4.056V to 4.136V (±40mV, or ±0.98% of nominal) over temperature, with a tempco of ±35ppm/°C. The reference is internally buffered and adjustable via the REFADJ pin, and bypassing with a 10µF capacitor to AGND is required for stability.
How does the AutoShutdown™ feature work on the MAX1174BCUP+?
The AutoShutdown™ feature on the MAX1174BCUP+ is controlled by the R/C pin during the second falling edge of CS. Setting R/C high places the device in shutdown mode after conversion, reducing total supply current to 0.5µA (typ). The internal reference and buffer power down, requiring ≥12ms to wake up and settle before next conversion. This mode maximizes battery life in intermittent-sampling applications.
What package type and temperature grade does the MAX1174BCUP+ use?
The MAX1174BCUP+ uses a 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch) and is rated for the extended industrial temperature range of –40°C to +85°C. The 'B' in the part number denotes the ±1LSB INL grade, and 'CUP' indicates the TSSOP package; the '+' suffix confirms RoHS-compliant, lead-free packaging per Maxim's ordering conventions.
Can the MAX1174BCUP+ interface directly with 3.3V microcontrollers?
Yes, the MAX1174BCUP+ supports direct interface with 3.3V microcontrollers via its separate DVDD supply pin, which accepts +2.7V to +5.25V. Digital I/O thresholds are defined as VIH = 0.7×DVDD and VIL = 0.3×DVDD, so at DVDD = 3.3V, VIH ≈ 2.31V and VIL ≈ 0.99V - compatible with standard 3.3V logic. Output drive strength (VOH/VOL) is also specified across this DVDD range.
MAX1174BCUP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
MAX1174BCUP+ FAQ
1.How can I place an order for MAX1174BCUP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1174BCUP+ 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 MAX1174BCUP+ reliable?
The price and inventory of MAX1174BCUP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1174BCUP+ is usually 5 days.
3.What payment methods are accepted for MAX1174BCUP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1174BCUP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1174BCUP+?
MAX1174BCUP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1174BCUP+ 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 MAX1174BCUP+?
For technical support, including MAX1174BCUP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1174BCUP+ requirements.
6.How does Aetrix verify that MAX1174BCUP+ is sourced from the original manufacturer or authorized distributors?
All MAX1174BCUP+ 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 MAX1174BCUP+ meets industry standards.
7.What is the process for return or replacement of MAX1174BCUP+?
All MAX1174BCUP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1174BCUP+, 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 MAX1174BCUP+ part is unused and in its original packaging.
Return procedure for MAX1174BCUP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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