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Analog Devices Inc./Maxim Integrated MAX1113EEE
- Part No.:
- MAX1113EEE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1113EEE.pdf
- Description:
- MULTICHANNEL, SERIAL 8-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:3,763
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Product details
Overview
MAX1113EEE from Maxim Integrated is an 8-bit, 4-channel serial analog-to-digital converter (ADC) with internal track/hold, 4.096V reference, and SPI/QSPI/MICROWIRE-compatible interface. It operates from a single 4.5V–5.5V supply, draws only 135µA at 50ksps, and supports software-configurable unipolar/bipolar and single-ended/differential inputs. It is designed for low-power portable data acquisition in industrial and medical instrumentation.
For engineers reviewing the MAX1113EEE datasheet, MAX1113EEE pinout, MAX1113EEE application, or MAX1113EEE equivalent, this page delivers verified technical identity, validated pin functions, confirmed operating temperature range (–40°C to +85°C), real-world timing behavior (25µs typical conversion time in internal clock mode), and precise input configuration logic for CH0–CH3 and COM.
Technical Context
The MAX1113EEE uses successive-approximation architecture with integrated track/hold and programmable clock source (internal or external). Its analog front-end supports pseudo-differential sampling via configurable channel pairs (CH0/CH1, CH2/CH3), with COM referenced zero-code voltage and ±0.5 LSB stability requirement.
Digital control is implemented via an 8-bit serial command byte (START, SEL2–SEL0, UNI/BIP, SGL/DIF, PD1, PD0), enabling dynamic reconfiguration of input mode, channel, polarity, and power state without hardware changes. The SSTRB output provides deterministic end-of-conversion signaling synchronized to SCLK falling edges or internal timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes with monotonic transfer function and no missing codes over temperature. |
| Sampling Rate | Up to 50ksps - supports real-time monitoring of signals up to 1.5MHz small-signal bandwidth using undersampling techniques. |
| Supply Current | 135µA at 50ksps; drops to 13µA in software power-down at 1ksps - enables battery operation in solar-powered remote systems. |
| Reference Voltage | Internal 4.096V ±0.4mV (typ) - sets full-scale range; also accepts external 1V–VDD reference for custom scaling. |
| Total Unadjusted Error | ±1 LSB (max), ±0.3 LSB (typ) - ensures accurate digitization without factory calibration in most embedded applications. |
| Input Configuration | 4 single-ended or 2 differential channels - selected dynamically via SGL/DIF bit and channel address bits in control byte. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-temperature embedded environments. |
Pinout & Package
The MAX1113EEE is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), optimized for space-constrained PCB layouts in handheld and portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 | Analog Input Channels | Selectable as single-ended inputs (vs. COM) or differential pairs (CH0/CH1, CH2/CH3); require stable COM reference within ±0.5 LSB. |
| COM | Common-Mode Reference | Sets zero-code voltage; must be decoupled and held stable - critical for accuracy in both unipolar and bipolar modes. |
| REFIN | Reference Input | Accepts internal REFOUT (4.096V) or external 1V–VDD reference; determines full-scale analog input range. |
| REFOUT | Internal Reference Output | Provides 4.096V ±0.4mV reference; requires 1µF bypass capacitor to AGND for settling to 0.5 LSB. |
| AGND / DGND | Analog & Digital Grounds | Separate ground pins minimize digital noise coupling into analog path; must be connected at single point on PCB. |
| VDD | Power Supply | 4.5V–5.5V single supply; requires local 0.1µF + 1µF bypassing to AGND near pin for stable operation. |
| CS | Active-Low Chip Select | Enables serial interface; DOUT and SSTRB enter high-impedance state when CS = high (external clock mode only). |
| SCLK | Serial Clock Input | Drives data I/O and (in external mode) controls conversion speed; supports 50kHz–500kHz (ext.) or internal ~400kHz clock. |
| DIN | Serial Data Input | Accepts 8-bit control byte on rising SCLK edges; first logic "1" defines MSB - tolerant of leading zeros. |
| DOUT | Serial Data Output | Outputs 8-bit result MSB-first on falling SCLK edges; high-impedance when CS = high (external mode). |
| SSTRB | Serial Strobe Output | Signals conversion status: pulses high for two clocks before MSB (ext. mode), or low for 25µs then high (int. mode). |
| SHDN | Three-Level Shutdown Control | High-impedance = active; pulled low = 10µA shutdown; pulled high = internal reference disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input topology | Single-ended (CH0–CH3 vs. COM) or differential (CH0/CH1, CH2/CH3) selected per conversion via control byte - eliminates external mux hardware. |
| Internal track/hold with 1µs min acquisition time | Supports accurate sampling of sources with ≤2.4kΩ impedance; tACQ = 6 × (RS + 6.5kΩ) × 18pF - enables direct sensor interfacing. |
| Flexible clocking architecture | Switch between internal (~400kHz) or external (50kHz–500kHz) conversion clock via PD0 bit - simplifies µP firmware and improves noise immunity. |
| Low-power automatic shutdown | 13µA at 1ksps (software-triggered) or 10µA (SHDN pin) - extends battery life in portable data loggers without sacrificing wake-up latency. |
| SPI/QSPI/MICROWIRE compatibility | Uses CPOL = 0, CPHA = 0 timing; supports simultaneous transmit/receive - integrates seamlessly with standard microcontroller peripherals. |
Applications
| Portable Data Logging | Hand-Held Measurement Devices |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure every 10 seconds. IC Role / Device Role / Timing Role: ADC digitizes conditioned analog outputs from multiple sensors; internal clock mode allows µP to initiate conversion and read result asynchronously. Use Value: 135µA active current and 13µA shutdown current extend AA battery life beyond 1 year; 4-channel capability reduces component count vs. discrete ADCs. |
Use Scenario: Pocket-sized multimeter acquiring voltage, current, and resistance readings with auto-ranging. IC Role / Device Role / Timing Role: Configures CH0 for voltage measurement (single-ended), CH1 for shunt current sensing (differential), and CH2 for thermistor bias (unipolar). Use Value: Software-selectable unipolar/bipolar and single-ended/differential modes eliminate manual range switching; 8-bit resolution meets Class II meter requirements. |
| Medical Instruments | Solar-Powered Remote Systems |
Use Scenario: Portable ECG front-end capturing lead-II differential signals with baseline drift compensation. IC Role / Device Role / Timing Role: Uses CH0/CH1 differential pair for signal acquisition; COM tied to mid-supply for bipolar operation; SSTRB triggers interrupt on completion. Use Value: ±1 LSB TUE and 68dB channel-to-channel crosstalk ensure clinical-grade waveform fidelity; 4.096V reference enables precise 1mV/bit scaling. |
Use Scenario: Off-grid weather station transmitting sensor data via LoRaWAN every 15 minutes using energy harvested from solar panel. IC Role / Device Role / Timing Role: Samples anemometer, rain gauge, and solar irradiance sensors during brief wake-up window; powered entirely from supercapacitor. Use Value: 10µA SHDN current minimizes quiescent drain; internal reference eliminates need for external precision voltage source - reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit multi-channel serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit, 4-channel, SPI-only interface; no internal reference; requires external 2.5V ref; 1.5µs conversion time. | Higher speed but lacks bipolar mode and internal track/hold - needs external op-amp buffering for high-Z sources. | Choose when system already has precision 2.5V reference and demands faster throughput than MAX1113EEE's 25µs internal mode. |
| MAX1110EUA+ | 8-bit, 8-channel, same package and pinout as MAX1112; shares identical register map and timing; –40°C to +85°C grade. | Offers double the channel count (8 SE) but consumes 150µA at 50ksps - higher power and larger input mux capacitance. | Choose when additional analog inputs are needed without changing PCB layout or firmware driver logic. |
Compared with ADS7822U and MAX1110EUA+, the MAX1113EEE uniquely combines internal 4.096V reference, software-configurable bipolar/single-ended operation, and ultra-low 13µA shutdown current - making it optimal for space- and energy-constrained portable instrumentation where design simplicity and long battery life are critical.
Availability
MAX1113EEE is available at Aetrix Electronics and suitable for portable data logging, hand-held measurement devices, and solar-powered remote systems requiring stable component supply across industrial temperature ranges.
Supply support for MAX1113EEE 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 MAX1112/MAX1113 product line delivers compact, low-power serial ADCs with integrated references and flexible input architectures - specifically engineered for battery-operated and space-constrained embedded data-acquisition systems.
FAQ
What is the maximum sampling rate supported by the MAX1113EEE?
The MAX1113EEE achieves up to 50ksps when using an external 500kHz serial clock in external clock mode. In internal clock mode, the typical conversion time is 25µs (40ksps), but effective throughput depends on µP read timing. The device guarantees no missing codes and ±1 LSB total unadjusted error across this full range.
Does the MAX1113EEE require an external reference voltage?
No - the MAX1113EEE includes a precision internal 4.096V reference accessible at the REFOUT pin, which can be directly connected to REFIN. An external reference (1V to VDD) may be used instead for custom full-scale ranges, but is not required for standard operation.
How does the SHDN pin function on the MAX1113EEE?
The SHDN pin on the MAX1113EEE is a three-level input: high-impedance enables normal operation; pulled low reduces supply current to ≤10µA; pulled high disables the internal reference while keeping digital circuitry active. This enables fine-grained power control without resetting configuration registers.
Can the MAX1113EEE perform differential measurements?
Yes - the MAX1113EEE supports true pseudo-differential measurements on CH0/CH1 and CH2/CH3 pairs. In differential mode, the device samples the voltage difference while maintaining COM as the common-mode reference point, with specified crosstalk of 68dB and offset matching of ±0.1 LSB.
What is the purpose of the SSTRB output on the MAX1113EEE?
The SSTRB output on the MAX1113EEE provides deterministic end-of-conversion signaling: in internal clock mode, it goes low for 25µs then high; in external clock mode, it pulses high for two SCLK periods before MSB output. This allows interrupt-driven µP firmware to avoid polling and minimize latency in time-critical acquisition loops.
MAX1113EEE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 50k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- 4-Wire, Microwire, QSPI, 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:
- 4.5V ~ 5.5V
- Voltage - Supply, Digital:
- 4.5V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1113EEE FAQ
1.How can I place an order for MAX1113EEE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1113EEE 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 MAX1113EEE reliable?
The price and inventory of MAX1113EEE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1113EEE is usually 5 days.
3.What payment methods are accepted for MAX1113EEE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1113EEE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1113EEE?
MAX1113EEE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1113EEE 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 MAX1113EEE?
For technical support, including MAX1113EEE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1113EEE requirements.
6.How does Aetrix verify that MAX1113EEE is sourced from the original manufacturer or authorized distributors?
All MAX1113EEE 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 MAX1113EEE meets industry standards.
7.What is the process for return or replacement of MAX1113EEE?
All MAX1113EEE units undergo pre-shipment inspection (PSI). If there is an issue with MAX1113EEE, 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 MAX1113EEE part is unused and in its original packaging.
Return procedure for MAX1113EEE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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