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Analog Devices Inc./Maxim Integrated MAX1110CAP
- Part No.:
- MAX1110CAP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX1110CAP.pdf
- Description:
- IC ADC 8BIT SAR 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,953
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Product details
Overview
MAX1110CAP from Maxim Integrated is an 8-bit, 8-channel successive-approximation analog-to-digital converter (ADC) with internal track/hold, 2.048V reference, SPI/QSPI/MICROWIRE-compatible serial interface, and software-configurable unipolar/bipolar, single-ended/differential input modes. It operates from a single 2.7V–5.5V supply, draws only 85µA at 50ksps, and targets portable data loggers and hand-held measurement devices requiring low power and multichannel sampling.
For engineers reviewing the MAX1110CAP datasheet, MAX1110CAP pinout, MAX1110CAP application, or MAX1110CAP equivalent, key selection criteria include its 8-channel single-ended input capability, 1µs acquisition time, ±1 LSB total unadjusted error, 50ksps max sampling rate with external clock, and SSOP-20 package compatibility with space-constrained embedded sensor interfaces.
Technical Context
The MAX1110CAP implements a capacitive DAC-based successive-approximation architecture with integrated track/hold, supporting both internal (400kHz typ) and external (up to 2MHz) clock modes. Its analog front-end allows software-selectable input configurations via an 8-bit control byte, including channel selection (CH0–CH7), unipolar/bipolar mode, and single-ended/differential operation.
Conversion timing is tightly coupled to serial interface activity: in external clock mode, 10 SCLK cycles complete one conversion (including acquisition and SAR decision phases); in internal clock mode, SSTRB asserts for 25µs (typ) while conversion runs independently, enabling flexible host read timing without serial clock dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for moderate-precision sensor digitization |
| Sampling Rate | Up to 50ksps with external clock - supports real-time monitoring of sub-25kHz signals |
| Total Unadjusted Error | ±1 LSB (max) - ensures monotonicity and ≤0.4% full-scale accuracy without calibration |
| Supply Current | 85µA at 50ksps; 6µA in software power-down - enables multi-year battery life in solar-powered remote systems |
| Input Channels | 8 single-ended or 4 differential - provides flexible signal routing for multi-sensor industrial diagnostics |
| Reference | Internal 2.048V ±0.3% - eliminates external reference component and reduces BOM count |
| Serial Interface | SPI/QSPI/MICROWIRE-compatible 4-wire - interoperates with common microcontroller peripherals without protocol translation |
Pinout & Package
The MAX1110CAP is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, optimized for compact PCB layouts in portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 | Analog Input Channel | Primary single-ended inputs; configurable as positive side in differential pairs CH0/CH1, CH2/CH3 |
| CH4–CH7 | Analog Input Channel | Additional single-ended inputs; support differential pairs CH4/CH5, CH6/CH7 (MAX1110-specific) |
| COM | Analog Common Reference | Zero-code reference node; must be stable to ±0.5 LSB for accurate single-ended conversions |
| REFIN | Reference Voltage Input | Accepts internal REFOUT (2.048V) or external 1V–VDD reference; sets full-scale range |
| REFOUT | Internal Reference Output | Provides 2.048V reference; requires 1µF bypass capacitor to AGND for stability |
| VDD | Positive Supply | 2.7V–5.5V single supply; powers analog and digital sections |
| AGND / DGND | Analog/Digital Ground | Separate ground pins minimize noise coupling between ADC core and serial interface |
| CS | Active-Low Chip Select | Enables serial communication; places DOUT/SSTRB in high-impedance state when high |
| SCLK | Serial Clock Input | Drives data transfer and (in external mode) controls conversion speed; tolerant to 5.5V |
| DIN | Serial Data Input | Receives 8-bit control byte defining channel, mode, and clock configuration |
| DOUT | Serial Data Output | Outputs 8-bit conversion result MSB-first on SCLK falling edge |
| SSTRB | Serial Strobe Output | Signals end-of-conversion: pulses high (external mode) or goes high after 25µs (internal mode) |
| SHDN | Three-Level Shutdown Control | High-impedance = active; low = 10µA shutdown; high = reference disabled |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input topology | Single-ended or differential mode selected per conversion via control byte bits SGL/DIF and UNI/BIP |
| Integrated reference and track/hold | Eliminates need for external op-amps, references, or sample-hold ICs in basic data-acquisition designs |
| Low-power automatic shutdown | Reduces supply current to 6µA at 1ksps via software command or SHDN pin assertion |
| 5.5V-tolerant digital I/O | CS, SCLK, and DIN accept 3V or 5V logic levels - simplifies interfacing with mixed-voltage microcontrollers |
| Flexible clocking architecture | Supports both host-controlled (external) and autonomous (internal) conversion timing to match system latency requirements |
Applications
| Portable Data Logging | Hand-Held Measurement Devices |
|---|---|
Use Scenario: Battery-powered environmental sensor nodes recording temperature, humidity, and light intensity over days without recharge. IC Role / Device Role / Timing Role: MAX1110CAP digitizes multiple analog sensor outputs sequentially using its 8-channel MUX and internal reference, minimizing external components. Use Value: 85µA active current and 6µA shutdown current extend operational life; SSOP-20 footprint fits within tight handheld enclosures. | Use Scenario: Field-service multimeters capturing voltage, current, and resistance with real-time display updates. IC Role / Device Role / Timing Role: MAX1110CAP serves as the primary ADC engine, accepting differential inputs for noise-rejecting current sensing and single-ended for voltage rails. Use Value: ±1 LSB TUE ensures calibrated accuracy across operating temperature; SPI compatibility enables fast firmware-driven channel switching. |
| Medical Instruments | System Diagnostics |
Use Scenario: Portable ECG monitors acquiring lead-II biopotential signals with baseline stability and low noise. IC Role / Device Role / Timing Role: MAX1110CAP samples pseudo-differential electrode pairs (e.g., CH0/CH1) with COM referenced to mid-supply for bipolar operation. Use Value: Internal 2.048V reference and 1.5MHz small-signal bandwidth support clean acquisition of cardiac waveforms up to 10kHz. | Use Scenario: Industrial PLC modules monitoring motor winding voltages, thermocouple outputs, and supply rail health. IC Role / Device Role / Timing Role: MAX1110CAP performs periodic multichannel surveillance, triggered by watchdog timer or host MCU polling. Use Value: Software power-down between readings cuts average current; 8-channel flexibility replaces multiple discrete ADCs in compact I/O modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit, 4-channel, SPI interface, 200ksps max, no internal reference - requires external 2.5V reference | Higher speed but fewer channels; lacks software-configurable bipolar mode and integrated track/hold | Select when >50ksps sampling or tighter layout constraints justify added reference component |
| MAX1113CPE+ | 8-bit, 4-channel, 50ksps, internal reference, DIP-16 package - same family but fewer inputs and through-hole mounting | Same functional set but limited to 4 single-ended inputs; not pin-compatible due to different pin count and SSOP vs. DIP | Choose for legacy through-hole prototyping or where 4-channel suffices and board rework is acceptable |
Compared with ADS7822U and MAX1113CPE+, the MAX1110CAP uniquely combines 8-channel single-ended capability, integrated 2.048V reference, and SSOP-20 packaging - making it optimal for new space-constrained, battery-operated multichannel data loggers requiring minimal external components.
Availability
MAX1110CAP is available at Aetrix Electronics and suitable for portable data logging, hand-held measurement devices, and medical instruments requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1110CAP 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 and mixed-signal ICs for industrial, medical, and communications applications, emphasizing integration, low power, and reliability.
The MAX1110CAP belongs to Maxim's low-power serial ADC product line, engineered specifically for battery-operated and space-constrained embedded systems needing multichannel analog sensing with minimal external components.
FAQ
What is the maximum sampling rate supported by the MAX1110CAP?
The MAX1110CAP achieves a maximum sampling rate of 50ksps when using an external serial clock at 500kHz with 10 clock cycles per conversion. In internal clock mode, the conversion time is fixed at 25µs (typ), yielding ~40ksps theoretical throughput, though host read timing determines effective rate. The 50ksps figure assumes continuous external clocking and accounts for acquisition and SAR decision phases as specified in the electrical characteristics table.
Does the MAX1110CAP require an external voltage reference?
No, the MAX1110CAP does not require an external voltage reference. It integrates a precision 2.048V internal reference (REFOUT) with ±0.3% initial accuracy and ±50ppm/°C temperature coefficient. This reference can be used directly by connecting REFIN to REFOUT. An external reference between 1V and VDD may be applied to REFIN if higher accuracy or custom full-scale range is needed, but it is optional.
How many analog input channels does the MAX1110CAP support in single-ended mode?
The MAX1110CAP supports 8 analog input channels (CH0–CH7) in single-ended mode, as confirmed by the functional diagram, pin description, and ordering context specifying "MAX1110CAP/MAX1111CEE" where MAX1110 denotes the 8-channel variant. This is distinct from the MAX1111 (4-channel), and the SSOP-20 package physically accommodates all eight dedicated input pins plus COM.
What package type is used for the MAX1110CAP?
The MAX1110CAP is supplied in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, as explicitly stated in the General Description section and confirmed by the Pin Configurations reference in the datasheet. This surface-mount package measures 7.2mm × 5.3mm and is RoHS-compliant, designed for automated assembly in compact portable electronics.
Can the MAX1110CAP operate with a 3.3V supply voltage?
Yes, the MAX1110CAP fully supports 3.3V operation. Its specified supply voltage range is 2.7V to 5.5V, and all key performance parameters-including 85µA supply current at 50ksps, ±1 LSB total unadjusted error, and 500kHz external clock compatibility-are guaranteed across this range. Electrical characteristics tables explicitly list test conditions for VDD = 2.7V to 3.6V and VDD = 5.5V, confirming robust 3.3V functionality.
MAX1110CAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 50k
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1110CAP FAQ
1.How can I place an order for MAX1110CAP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1110CAP 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 MAX1110CAP reliable?
The price and inventory of MAX1110CAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1110CAP is usually 5 days.
3.What payment methods are accepted for MAX1110CAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1110CAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1110CAP?
MAX1110CAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1110CAP 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 MAX1110CAP?
For technical support, including MAX1110CAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1110CAP requirements.
6.How does Aetrix verify that MAX1110CAP is sourced from the original manufacturer or authorized distributors?
All MAX1110CAP 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 MAX1110CAP meets industry standards.
7.What is the process for return or replacement of MAX1110CAP?
All MAX1110CAP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1110CAP, 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 MAX1110CAP part is unused and in its original packaging.
Return procedure for MAX1110CAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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