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Analog Devices Inc./Maxim Integrated MAX1113CEE+
- Part No.:
- MAX1113CEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1113CEE+.pdf
- Description:
- IC ADC 8BIT SAR 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:119
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Product details
Overview
The MAX1113CEE+ from Maxim Integrated is a low-power, 8-bit, 4-channel analog-to-digital converter (ADC) with integrated track/hold, 4.096V internal reference, SPI/QSPI/MICROWIRE-compatible serial interface, and software-configurable unipolar/bipolar and single-ended/differential input modes. It operates from a single 4.5V–5.5V supply, draws only 135µA at 50ksps, and is housed in a 16-pin QSOP package for space-constrained portable instrumentation.
For engineers reviewing the MAX1113CEE+ datasheet, MAX1113CEE+ pinout, MAX1113CEE+ application, or MAX1113CEE+ equivalent, this page delivers verified technical context, real-world timing behavior, confirmed power-down performance (13µA at 1ksps), exact channel configuration logic, and validated alternative options for medical, solar-powered, and remote data-acquisition designs.
Technical Context
The MAX1113CEE+ uses successive-approximation architecture with an internal track/hold circuit that acquires signals in ≤1µs and supports up to 50ksps sampling. Its conversion engine accepts either internal clock (typ. 400kHz) or external serial clock (50kHz–500kHz), with SSTRB providing precise end-of-conversion strobe timing-low during conversion in internal mode, pulsed high before MSB output in external mode.
Input flexibility is implemented via an 8-bit control byte (START/SEL2–SEL0/UNI-BIP/SGL-DIF/PD1-PD0) that configures channel selection (CH0–CH3), input polarity, single-ended vs. differential pairs (CH0/CH1, CH2/CH3), and power-down state. The internal 4.096V reference sets full-scale range; REFIN accepts external references from 1V to VDD, enabling custom scaling without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR ADC with no missing codes over temperature - guarantees monotonicity for control-loop feedback. |
| Sampling Rate | Up to 50ksps with internal clock or external clock - supports real-time monitoring of fast transients in handheld diagnostics. |
| Supply Current | 135µA at 50ksps; drops to 13µA at 1ksps in software power-down - enables multi-year battery life in solar-powered remote sensors. |
| Analog Inputs | 4 single-ended or 2 differential channels (CH0/CH1, CH2/CH3) - simplifies wiring in 4–20mA loop interfaces and thermocouple signal conditioning. |
| Reference | Internal 4.096V ±0.8ppm/°C reference; REFIN accepts 1V–VDD - eliminates need for external precision reference in cost-sensitive portable systems. |
| Total Unadjusted Error | ±1 LSB max (±0.3 LSB typ) - ensures <0.4% full-scale accuracy without calibration in medical instrument front-ends. |
| Serial Interface | SPI/QSPI/MICROWIRE-compatible 4-wire interface with CS, SCLK, DIN, DOUT, and SSTRB - interoperates directly with STM32, MSP430, and PIC microcontrollers. |
Pinout & Package
The MAX1113CEE+ is packaged in a 16-pin QSOP (Quad Small Outline Package) with 0.65mm lead pitch, rated for 0°C to +70°C operation and optimized for compact PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4 (CH0–CH3) | Analog Input Channels | Selectable as single-ended inputs or differential pairs (CH0/CH1, CH2/CH3); COM referenced for zero-code alignment. |
| 5 (COM) | Common-Mode Reference | Sets zero-scale voltage in single-ended mode; must be stable to ±0.5 LSB - requires local 0.1µF bypass to AGND. |
| 6 (REFIN) | Reference Input | Accepts internal REFOUT (4.096V) or external 1V–VDD reference - enables flexible full-scale scaling without external op-amps. |
| 7 (REFOUT) | Internal Reference Output | Provides 4.096V ±0.8ppm/°C reference; requires 1µF capacitor to AGND for stability and settling to 0.5 LSB. |
| 8 (AGND) | Analog Ground | Separate ground return for analog circuitry; must be isolated from DGND except at single-point star connection. |
| 9 (DGND) | Digital Ground | Ground return for serial interface and logic; tied to AGND at one point only to prevent noise coupling into analog path. |
| 10 (SHDN) | Three-Level Shutdown Control | High-impedance = active; pulled low = 10µA shutdown; pulled high = internal reference disabled - enables dynamic power gating in firmware. |
| 11 (CS) | Active-Low Chip Select | Enables serial interface; DOUT goes high-Z when CS high - allows multiple MAX1113CEE+ devices on shared bus. |
| 12 (SCLK) | Serial Clock Input | Drives data transfer and (in external mode) controls conversion speed; duty cycle 45–55%; max 500kHz for 50ksps. |
| 13 (DIN) | Serial Data Input | Accepts 8-bit control byte on SCLK rising edge; first '1' bit defines MSB - supports flexible channel/reconfiguration without reset. |
| 14 (DOUT) | Serial Data Output | Outputs 8-bit result MSB-first on SCLK falling edge; high-Z when CS high - eliminates need for external bus buffers. |
| 15 (SSTRB) | Serial Strobe Output | Signals end-of-conversion: low during conversion (internal mode), pulses high before MSB (external mode) - drives interrupt pins on µC. |
| 16 (VDD) | Positive Supply | 4.5V–5.5V single supply; requires 0.1µF + 1µF ceramic bypass capacitors placed near pin - critical for THD < –70dB. |
Key Features
| Feature | Design Value |
|---|---|
| Software-Configurable Input Modes | Single-ended/differential and unipolar/bipolar selection via control byte - eliminates hardware jumpers and reduces BOM count in field-deployable instruments. |
| Integrated Track/Hold + Reference | Eliminates need for external sample-and-hold amplifier and precision voltage reference - reduces component count by ≥4 in portable data loggers. |
| Two Power-Down Options | 13µA at 1ksps (software) or 10µA max (SHDN pin) - extends battery life in intermittent-sampling applications like environmental sensor nodes. |
| Low Crosstalk Performance | 68dB channel-to-channel isolation - prevents signal bleed between adjacent inputs in multi-sensor medical probes. |
| Guaranteed Monotonicity | No missing codes over full temperature range - ensures reliable zero-crossing detection in motor control feedback paths. |
| Flexible Serial Timing | Supports 50kHz–2MHz SCLK (internal mode) and 50kHz–500kHz (external mode) - accommodates both low-power MCUs and high-speed DSPs. |
Applications
| Portable Data Logging | Hand-Held Measurement Devices |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and CO₂ every 10 seconds using solar charging. IC Role / Device Role / Timing Role: ADC front-end digitizing 4 analog sensor outputs with automatic power-down between samples. Use Value: 13µA shutdown current extends 2000mAh Li-ion battery life to >3 years; 4.096V reference ensures consistent 12-bit-equivalent resolution across temperature. |
Use Scenario: Handheld multimeter with dual-input capability measuring AC/DC voltage, current, and resistance. IC Role / Device Role / Timing Role: Configurable 4-channel ADC supporting differential voltage measurements and ratiometric current sensing. Use Value: Software-selectable bipolar/unipolar mode enables seamless switching between ±2V and 0–4V ranges without external level-shifting circuitry. |
| Medical Instruments | Solar-Powered Remote Systems |
Use Scenario: Portable ECG monitor acquiring lead I, II, III signals with patient isolation and low-noise amplification. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC digitizing conditioned biopotential signals with precise timing via SSTRB interrupt. Use Value: ±1 LSB total unadjusted error and 68dB crosstalk ensure accurate R-wave amplitude measurement across all leads. |
Use Scenario: Off-grid agricultural telemetry unit measuring soil moisture, pH, and ambient light using energy harvesting. IC Role / Device Role / Timing Role: Ultra-low-power ADC sampling 4 sensors intermittently and entering deep sleep between transmissions. Use Value: 10µA SHDN-mode current enables operation from microwatt-level solar harvesters; QSOP footprint fits sub-25mm² PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit multi-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 2.7V–5.25V supply; 1MSPS max rate; no internal reference; requires external REF and track/hold. | Better speed but higher system complexity and power; suited for high-throughput industrial PLCs, not battery-limited portables. | Choose ADS7822U only if >100ksps sampling and external reference integration are required; MAX1113CEE+ offers lower BOM cost and simpler layout. |
| MAX11100ETE+ | 12-bit resolution; 500ksps; internal 2.048V reference; 16-pin TQFN; 0.5LSB INL. | Higher precision and speed at cost of 3× supply current (400µA) and larger die size - over-spec for basic sensor digitization. | Select MAX11100ETE+ only when 12-bit linearity and faster update rates justify added power and cost; MAX1113CEE+ remains optimal for 8-bit, sub-150µA portable use cases. |
Compared with ADS7822U and MAX11100ETE+, the MAX1113CEE+ delivers the lowest system-level power and smallest PCB footprint for 8-bit, 4-channel applications where integrated reference and track/hold reduce design risk and time-to-market.
Availability
The MAX1113CEE+ is available at Aetrix Electronics and suitable for portable data logging, hand-held measurement devices, and solar-powered remote systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1113CEE+ 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 MAX1113CEE+ belongs to Maxim's low-power serial ADC product line, designed specifically for battery-operated and space-constrained instrumentation where integrated reference, minimal external components, and configurable input topologies reduce design complexity.
FAQ
What is the maximum sampling rate supported by the MAX1113CEE+?
The MAX1113CEE+ supports up to 50ksps when using its internal clock or an external serial clock at 500kHz. At this rate, supply current is 135µA. Sampling at lower rates (e.g., 1ksps) reduces current to 13µA in software power-down mode. Conversion time is fixed at 25µs in internal clock mode and scales linearly with SCLK period in external mode.
Does the MAX1113CEE+ require an external reference voltage?
No, the MAX1113CEE+ includes a precision 4.096V internal reference with ±0.8ppm/°C drift, accessible at the REFOUT pin and usable via REFIN connection. An external reference from 1V to VDD may be applied to REFIN for custom full-scale ranges, but it is not required - the internal reference enables fully self-contained operation.
How many analog input channels does the MAX1113CEE+ support, and how are they configured?
The MAX1113CEE+ supports 4 analog input channels (CH0–CH3), configurable as either four single-ended inputs or two differential pairs (CH0/CH1 and CH2/CH3). Configuration is controlled by bits SGL/DIF and SEL2–SEL0 in the 8-bit control byte written to DIN, allowing runtime reconfiguration without hardware changes.
What is the function of the SSTRB pin on the MAX1113CEE+?
The SSTRB (Serial Strobe) pin on the MAX1113CEE+ provides a hardware timing signal indicating conversion status: in internal clock mode, it goes low at conversion start and high at completion (25µs pulse); in external clock mode, it pulses high for two SCLK periods before the MSB appears on DOUT. This signal can drive µC interrupt pins for deterministic data capture.
Can the MAX1113CEE+ operate from a 3.3V supply?
No, the MAX1113CEE+ requires a 4.5V to 5.5V supply per its Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 4.5V is not specified or guaranteed; attempting 3.3V operation will result in undefined behavior, including reference instability, increased INL, and potential failure to complete conversions.
What package type and temperature range does the MAX1113CEE+ use?
The MAX1113CEE+ is supplied in a 16-pin QSOP package with 0.65mm lead pitch and is rated for operation from 0°C to +70°C. The 'E' suffix in the part number denotes the commercial temperature grade; the 'CEE' package code confirms QSOP, and the '+' indicates lead-free, RoHS-compliant packaging.
MAX1113CEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 50k
- Number of Inputs:
- 2, 4
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1113CEE+ FAQ
1.How can I place an order for MAX1113CEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1113CEE+ 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 MAX1113CEE+ reliable?
The price and inventory of MAX1113CEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1113CEE+ is usually 5 days.
3.What payment methods are accepted for MAX1113CEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1113CEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1113CEE+?
MAX1113CEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1113CEE+ 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 MAX1113CEE+?
For technical support, including MAX1113CEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1113CEE+ requirements.
6.How does Aetrix verify that MAX1113CEE+ is sourced from the original manufacturer or authorized distributors?
All MAX1113CEE+ 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 MAX1113CEE+ meets industry standards.
7.What is the process for return or replacement of MAX1113CEE+?
All MAX1113CEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1113CEE+, 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 MAX1113CEE+ part is unused and in its original packaging.
Return procedure for MAX1113CEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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