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Analog Devices Inc./Maxim Integrated MAX1177ACUP+
- Part No.:
- MAX1177ACUP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1177ACUP+.pdf
- Description:
- IC ADC 16BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,789
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Product details
Overview
The MAX1177ACUP+ from Maxim Integrated is a 16-bit, 135ksps successive-approximation ADC with 0V to +10V analog input range, single +4.75V to +5.25V analog supply, and byte-wide parallel interface. It features ±3 LSB INL, -100dB THD, and AutoShutdown™ mode for battery-powered data-acquisition systems in industrial process control.
For engineers reviewing the MAX1177ACUP+ datasheet, MAX1177ACUP+ pinout, MAX1177ACUP+ application, or MAX1177ACUP+ equivalent, key selection considerations include internal/external reference support, high-precision DC accuracy (±3 LSB INL), low-power shutdown (0.5µA), TSSOP-20 package compatibility, and 0–10V input scaling architecture.
Technical Context
The MAX1177ACUP+ employs a SAR architecture with integrated track-and-hold and factory-trimmed internal clock, enabling full 16-bit conversion in 4.7µs without external timing components. Its input scaler supports direct 0–10V analog input on a single +5V supply, eliminating external level-shifting circuitry.
Power management is implemented via R/C-controlled standby (3.7mA) or shutdown (0.5µA) modes, selected on the second CS falling edge. Reference operation is flexible: internal +4.096V buffered reference (±35ppm/°C tempco) or external 3.8–4.2V reference at REF/REFADJ pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct output codes for high-fidelity signal digitization |
| Sampling Rate | 135ksps - supports real-time acquisition of signals up to ~67kHz Nyquist bandwidth |
| INL | ±3 LSB - ensures monotonicity and <0.005% full-scale linearity error across temperature |
| THD | -100dB - enables clean spectral performance for precision instrumentation and medical sensing |
| Analog Input Range | 0V to +10V - accommodates industrial sensor outputs (e.g., 4–20mA loop receivers, RTD bridges) without external amplification |
| Supply Current | 2.9mA (ext ref) / 3.8mA (int ref) at 135ksps - enables low-power embedded DAQ with minimal thermal load |
| AutoShutdown Current | 0.5µA - extends battery life in intermittent-sampling applications like remote monitoring nodes |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade industrial control and test equipment environments |
Pinout & Package
MAX1177ACUP+ is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, 4.4mm body width, and exposed pad for thermal dissipation. Pin layout supports compact PCB layout with separate analog/digital ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0/D8–D7/D15 | Tri-state parallel data outputs | Byte-multiplexed 16-bit result: HBEN selects D0–D7 (LSB) or D8–D15 (MSB) on bus |
| R/C | Read/Convert control input | Configures power mode (standby/shutdown) and triggers data read on third CS edge |
| EOC | End-of-conversion flag | Active-low signal indicates valid conversion result ready for readback |
| CS | Chip select / convert start | First edge powers up device; second starts conversion; third loads data onto bus |
| HBEN | High-byte enable | Controls byte multiplexing: logic high presents MSB (D8–D15), low presents LSB (D0–D7) |
| AIN | Analog input | 0–10V input node scaled internally to match DAC range; requires external buffer for 16-bit accuracy |
| REF / REFADJ | Reference I/O | REF outputs +4.096V (internal) or accepts 3.8–4.2V (external); REFADJ adjusts internal ref or disables buffer when tied to AVDD |
| AVDD / DVDD | Analog & digital supplies | Separate rails allow interfacing with 2.7–5.25V logic while maintaining analog integrity |
| AGND / DGND | Analog & digital grounds | Must be connected at single point near device to minimize noise coupling between domains |
Key Features
| Feature | Design Value |
|---|---|
| 0–10V input scaling | Eliminates external op-amp gain stages for industrial voltage sensors, reducing BOM count and board area |
| Factory-trimmed internal reference | +4.096V output with ±35ppm/°C drift enables stable 16-bit measurements without external reference IC |
| Byte-wide parallel interface | Reduces microcontroller GPIO usage vs. serial interfaces; supports fast burst reads in µP-based DAQ systems |
| AutoShutdown™ mode | 0.5µA quiescent current between conversions extends battery life in portable instrumentation |
| Single +5V analog supply | Simplifies power design by removing need for dual-rail analog supplies in mixed-signal systems |
Applications
| Temperature Sensing and Monitoring | Industrial Process Control |
|---|---|
Use Scenario: Digitizing thermocouple or RTD bridge outputs in HVAC controllers and PLC analog input modules. IC Role / Device Role / Timing Role: High-accuracy ADC capturing slow-varying temperature signals with ±3 LSB INL and low offset drift (16µV/°C). Use Value: Enables sub-0.1°C resolution over wide temperature ranges without calibration overhead. | Use Scenario: Converting 4–20mA current-loop sensor outputs in factory automation I/O modules. IC Role / Device Role / Timing Role: Direct 0–10V input interface to shunt-resistor voltage drops, supporting 135ksps sampling for fast transient detection. Use Value: Eliminates external signal conditioning, reducing component count and improving long-term stability. |
| I/O Modules | Precision Instrumentation |
Use Scenario: Serving as the core ADC in modular data-acquisition cards for test benches and SCADA systems. IC Role / Device Role / Timing Role: Parallel 16-bit interface synchronizes with µP DMA engines for zero-wait-state data streaming. Use Value: Achieves sustained 135ksps throughput with deterministic timing, critical for real-time control loops. | Use Scenario: Front-end digitization in portable oscilloscopes, spectrum analyzers, and medical ECG monitors. IC Role / Device Role / Timing Role: Low THD (-100dB) and high SFDR (92dB) preserve signal fidelity for FFT-based analysis. Use Value: Supports accurate harmonic distortion measurement and dynamic range analysis without post-processing correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, SPI interface, 2.5–5.5V supply, no internal reference | Higher speed but serial interface increases µP overhead; requires external reference and driver | Choose for higher throughput where SPI is preferred and external reference is acceptable |
| AD7682BRMZ | 16-bit, 250ksps, pseudo-differential input, 2.3–5.5V supply, internal reference | Lower input range (±VREF), differential architecture better for noisy industrial environments | Choose for noise-immune measurements where bipolar input or lower supply voltage is required |
Compared with ADS8860IDRCT and AD7682BRMZ, the MAX1177ACUP+ offers unique value in 0–10V single-ended input support, byte-wide parallel interface for minimal µP intervention, and integrated 0.5µA AutoShutdown-making it optimal for cost-sensitive, battery-operated, high-precision DAQ where simplicity and ultra-low quiescent current are critical.
Availability
MAX1177ACUP+ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and battery-powered data-acquisition systems requiring stable component supply and long-term manufacturability.
Supply support for MAX1177ACUP+ 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 MAX1177ACUP+ belongs to Maxim's high-accuracy data-converter family, engineered specifically for low-power, single-supply, high-resolution digitization in space- and energy-constrained systems.
FAQ
What is the maximum sampling rate of the MAX1177ACUP+?
The MAX1177ACUP+ achieves a maximum sampling rate of 135ksps under standard operating conditions (AVDD = DVDD = +5V, external reference). This rate is guaranteed across the full 0°C to +70°C temperature range and supports real-time capture of signals with up to ~67kHz bandwidth while maintaining 16-bit resolution and specified AC performance (SINAD ≥ 85dB).
Does the MAX1177ACUP+ require an external reference voltage?
No, the MAX1177ACUP+ includes a factory-trimmed internal reference providing +4.096V at the REF pin, with ±35ppm/°C temperature coefficient. An external reference (3.8V–4.2V) may be used by connecting REFADJ to AVDD and driving REF directly-but the internal reference eliminates BOM cost and simplifies design for most precision applications.
How does the AutoShutdown™ feature work on the MAX1177ACUP+?
The MAX1177ACUP+ enters AutoShutdown™ mode when R/C is held high during the second falling edge of CS, powering down the internal reference and buffer after conversion. This reduces total supply current to 0.5µA (typical), extending battery life in intermittent-sampling applications. Wake-up time from shutdown is 12ms to achieve 16-bit accuracy, requiring careful timing coordination in firmware.
What is the purpose of the HBEN pin on the MAX1177ACUP+?
The HBEN (High-Byte Enable) pin on the MAX1177ACUP+ controls byte multiplexing of the 16-bit parallel output. When HBEN = high, D8–D15 (MSB byte) appear on the data bus; when HBEN = low, D0–D7 (LSB byte) are presented. This allows 8-bit microcontrollers to read the full 16-bit result in two consecutive cycles without requiring wider data buses.
Can the MAX1177ACUP+ interface directly with 3.3V logic systems?
Yes, the MAX1177ACUP+ supports digital interface voltages from +2.7V to +5.25V on DVDD, making it fully compatible with 3.3V microcontrollers and FPGAs. Its VOH (DVDD – 0.4V min) and VOL (0.4V max) specifications ensure reliable logic-level translation without level shifters, provided DVDD is set to 3.3V and proper bypassing (0.1µF to DGND) is implemented.
MAX1177ACUP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 135k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- 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:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1177ACUP+ FAQ
1.How can I place an order for MAX1177ACUP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1177ACUP+ 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 MAX1177ACUP+ reliable?
The price and inventory of MAX1177ACUP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1177ACUP+ is usually 5 days.
3.What payment methods are accepted for MAX1177ACUP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1177ACUP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1177ACUP+?
MAX1177ACUP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1177ACUP+ 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 MAX1177ACUP+?
For technical support, including MAX1177ACUP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1177ACUP+ requirements.
6.How does Aetrix verify that MAX1177ACUP+ is sourced from the original manufacturer or authorized distributors?
All MAX1177ACUP+ 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 MAX1177ACUP+ meets industry standards.
7.What is the process for return or replacement of MAX1177ACUP+?
All MAX1177ACUP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1177ACUP+, 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 MAX1177ACUP+ part is unused and in its original packaging.
Return procedure for MAX1177ACUP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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