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Analog Devices Inc./Maxim Integrated MAX1156BCUP
- Part No.:
- MAX1156BCUP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1156BCUP.pdf
- Description:
- 14-BIT, 135KSPS ADC
- Quantity:
- Payment:
- Shipping:
Inventory:262
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Product details
Overview
MAX1156BCUP from Maxim Integrated is a 14-bit, 135ksps successive-approximation ADC with unipolar 0 to +10V analog input range, single +4.75V to +5.25V analog supply, and byte-wide parallel interface. It features ±1LSB INL (max), ±1LSB DNL (max), and AutoShutdown™ reducing current to 0.4mA (typ) at 10ksps - ideal for battery-powered industrial data-acquisition systems requiring high DC accuracy and low power.
For engineers reviewing the MAX1156BCUP datasheet, MAX1156BCUP pinout, MAX1156BCUP application, or MAX1156BCUP equivalent, this page delivers verified technical context, real-world timing behavior, confirmed package mapping to 20-pin TSSOP, and validated alternative options for precision analog-to-digital conversion in temperature monitoring and process control.
Technical Context
The MAX1156BCUP implements a SAR architecture with integrated track-and-hold and factory-trimmed internal +4.096V reference. Its input scaler enables true 0 to +10V unipolar operation from a single +5V analog supply, eliminating need for external level-shifting circuitry.
Conversion is controlled via three CS falling edges: first powers up and initiates acquisition, second starts conversion, third loads 14-bit result onto D0–D13 bus. HBEN toggles between high/low byte output, with D13 as MSB and D0 as LSB - supporting microprocessor interfacing without glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 distinct digital codes over full-scale range. |
| Sampling Rate | 135ksps maximum - supports real-time capture of signals up to ~67kHz Nyquist bandwidth. |
| Analog Input Range | 0 to +10V unipolar - matches industrial sensor outputs (e.g., 4–20mA transmitters with 250Ω shunt). |
| INL / DNL | ±1LSB (max) - ensures monotonicity and <0.006% full-scale linearity error for calibration-critical applications. |
| Supply Current | 2.9mA (ext ref, 135ksps) - enables >300hr runtime on a 1Ah Li-ion battery in continuous sampling mode. |
| AutoShutdown Current | 0.4mA (typ) at 10ksps - reduces average power by >90% during idle intervals in burst-mode DAQ. |
| THD | –100dB (typ) - preserves signal fidelity for precision instrumentation and medical-grade measurements. |
Pinout & Package
MAX1156BCUP is housed in a 20-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, optimized for compact industrial PCB layouts and compatible with standard reflow profiles. Thermal pad is not present; JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 17–20 (D0–D7/D8–D13) | Three-state parallel data output | D0 = LSB, D13 = MSB; HBEN selects high/low byte - enables direct µP bus connection without latching logic. |
| 5 (R/C) | Read/Convert control input | Configures standby vs. shutdown mode on second CS edge; controls reference power state for wake-up timing management. |
| 6 (EOC) | End-of-conversion flag | Active-low signal indicates valid data ready - synchronizes µP read cycle without polling overhead. |
| 7 (AVDD), 8 & 10 (AGND) | Analog power and ground | Separate analog rail and dual AGND pins require star grounding near device to minimize noise coupling into SAR core. |
| 9 (AIN) | Analog input terminal | Accepts 0 to +10V unipolar signal; internal scaler handles attenuation/level-shift - no external op-amp required for basic use. |
| 11 (REFADJ), 12 (REF) | Reference buffer control/output | REFADJ = 0.1µF bypass to AGND for internal ref; connect REFADJ to AVDD to disable buffer and use external 3.8–4.2V reference. |
| 13 (HBEN) | High-byte enable | Logic-high presents D8–D13 on bus; logic-low presents D0–D7 - supports 8-bit data bus interfaces with byte multiplexing. |
| 14 (CS) | Convert start command | Three-edge sequence (acquire → convert → output) eliminates need for external timing generator or clock distribution. |
| 15 (DGND), 16 (DVDD) | Digital power and ground | DVDD supports +2.7V to +5.25V logic - allows direct interface with 3.3V or 5V µPs without level translators. |
Key Features
| Feature | Design Value |
|---|---|
| Byte-wide parallel interface | 14-bit result delivered across D0–D13 with HBEN-controlled byte multiplexing - eliminates serial-to-parallel conversion latency. |
| Single-supply operation | +4.75V to +5.25V AVDD powers both analog core and internal reference - removes need for dual-rail supplies in portable systems. |
| Factory-trimmed internal reference | +4.096V ±0.98% (4.056V to 4.136V) with ±35ppm/°C tempco - enables absolute accuracy without external precision reference ICs. |
| AutoShutdown™ mode | Reduces total supply current to 0.4mA (typ) at 10ksps - extends battery life while maintaining fast wake-up (<12ms) for event-triggered sampling. |
| Input scaler architecture | Supports 0 to +10V input directly from +5V supply - avoids external resistive dividers that degrade SNR and introduce thermal drift errors. |
Applications
| Temperature Sensing and Monitoring | Industrial Process Control |
|---|---|
|
Use Scenario: Continuous logging of thermocouple or RTD outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC converting conditioned sensor voltage to 14-bit digital value synchronized to 10–100Hz control loop timing. Use Value: ±1LSB INL ensures <±0.006% full-scale error across –40°C to +85°C, enabling traceable calibration without per-unit trimming. |
Use Scenario: Analog feedback acquisition in servo drive current/voltage sensing circuits. IC Role / Device Role / Timing Role: High-speed sampling of motor phase currents with 135ksps rate to resolve PWM ripple artifacts. Use Value: –100dB THD preserves harmonic content for accurate current reconstruction, critical for field-oriented control algorithms. |
| I/O Modules | Data-Acquisition Systems |
|
Use Scenario: Universal analog input channel in modular I/O systems accepting 0–10V, 4–20mA, or ±10V signals. IC Role / Device Role / Timing Role: Configurable front-end ADC with software-selectable reference mode (internal/external) and power-down sequencing. Use Value: R/C-controlled standby/shutdown modes allow dynamic power scaling per channel - reducing system-level heat dissipation in dense chassis. |
Use Scenario: Portable handheld test equipment capturing transient waveforms from sensors or transducers. IC Role / Device Role / Timing Role: Low-power SAR ADC interfaced to ARM Cortex-M host via GPIO bit-banged parallel bus. Use Value: 2.9mA active current + 0.4mA AutoShutdown enables >10hr operation on two AA cells - meeting field-deployment runtime requirements. |
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 |
|---|---|---|---|
| ADS8325IPW | 16-bit resolution, SPI interface, no internal reference - requires external 4.096V ref and level-shifting for 3.3V µPs. | Better resolution but higher power (8.5mW @ 100ksps); lacks AutoShutdown and unipolar 0–10V native support. | Choose when 16-bit precision outweighs board space, power, and interface complexity trade-offs. |
| AD7940BRMZ | 14-bit, 100ksps, SPI interface, internal 2.5V ref - needs external op-amp for 0–10V scaling and level translation. | Lower sampling rate and fixed 2.5V reference limit dynamic range; no byte-multiplexed parallel output. | Prefer for cost-sensitive designs where SPI compatibility and smaller footprint offset loss of native 0–10V range. |
Compared with ADS8325IPW and AD7940BRMZ, the MAX1156BCUP uniquely combines native 0–10V unipolar input, byte-wide parallel interface, factory-trimmed 4.096V reference, and AutoShutdown - reducing BOM count, layout area, and firmware overhead in industrial DAQ.
Availability
MAX1156BCUP is available at Aetrix Electronics and suitable for industrial process control, temperature monitoring, and portable data-acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1156BCUP 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, medical, and communications applications.
The MAX1156BCUP belongs to Maxim's precision data-acquisition ADC family, designed specifically for battery-powered and space-constrained industrial systems needing high DC accuracy, low power, and simplified analog front-end integration.
FAQ
What is the operating temperature range for the MAX1156BCUP?
The MAX1156BCUP is specified for the commercial temperature range of 0°C to +70°C. This rating is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet. The 'B' grade denotes ±2LSB INL performance across this range, making it suitable for indoor industrial environments and non-automotive embedded systems where ambient temperatures remain within these limits. The MAX1156BCUP does not support extended –40°C to +85°C operation - that capability is reserved for 'E' grade variants like MAX1156BEUP.
Does the MAX1156BCUP include an internal voltage reference?
Yes, the MAX1156BCUP integrates a factory-trimmed +4.096V internal reference with ±0.98% initial accuracy (4.056V to 4.136V) and ±35ppm/°C temperature coefficient. This reference is buffered and available at the REF pin, requiring only a 10µF capacitor to AGND for stability. REFADJ provides adjustment capability via external resistor networks, and connecting REFADJ to AVDD disables the internal buffer to allow external reference injection - giving designers flexibility without adding discrete reference ICs.
How does the AutoShutdown™ feature work on the MAX1156BCUP?
The MAX1156BCUP enters AutoShutdown™ mode automatically after conversion when the R/C pin is driven high during the second falling edge of CS. In this state, the internal reference and buffer are powered down, reducing total supply current to 0.4mA (typ) at 10ksps. Wake-up requires ≥12ms for reference stabilization before the next valid conversion - a timing constraint explicitly defined in the Applications Information section. This behavior is distinct from standby mode (R/C low), where reference remains active for faster turn-on.
What is the analog input impedance of the MAX1156BCUP?
The MAX1156BCUP exhibits a nominal analog input resistance (RAIN) of 5.3kΩ in normal operation and 3.0kΩ in shutdown mode, as measured under 0 ≤ VAIN ≤ +10V conditions. This value is specified in the Electrical Characteristics table and reflects the effective impedance seen by the driving source due to internal scaling network and ESD protection structures. Designers must account for this loading effect when selecting input buffer amplifiers - especially for high-impedance sources like thermistors or piezoelectric sensors - to avoid gain error and settling-time degradation.
Can the MAX1156BCUP interface directly with a 3.3V microcontroller?
Yes, the MAX1156BCUP supports direct interface with 3.3V microcontrollers via its DVDD pin, which accepts +2.7V to +5.25V digital supply voltage. Logic thresholds (VIH = 0.7×DVDD, VIL = 0.3×DVDD) and output drive strength (VOH = DVDD – 0.4V, VOL = 0.4V) are fully compatible with 3.3V CMOS levels. No level-shifting circuitry is required - the parallel D0–D13 outputs, CS, R/C, HBEN, and EOC signals operate natively at 3.3V logic when DVDD = 3.3V, simplifying host processor integration.
MAX1156BCUP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 14
- 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:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- True Bipolar
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1156BCUP FAQ
1.How can I place an order for MAX1156BCUP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1156BCUP 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 MAX1156BCUP reliable?
The price and inventory of MAX1156BCUP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1156BCUP is usually 5 days.
3.What payment methods are accepted for MAX1156BCUP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1156BCUP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1156BCUP?
MAX1156BCUP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1156BCUP 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 MAX1156BCUP?
For technical support, including MAX1156BCUP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1156BCUP requirements.
6.How does Aetrix verify that MAX1156BCUP is sourced from the original manufacturer or authorized distributors?
All MAX1156BCUP 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 MAX1156BCUP meets industry standards.
7.What is the process for return or replacement of MAX1156BCUP?
All MAX1156BCUP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1156BCUP, 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 MAX1156BCUP part is unused and in its original packaging.
Return procedure for MAX1156BCUP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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