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Analog Devices Inc./Maxim Integrated MAX1168CCEG+
- Part No.:
- MAX1168CCEG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1168CCEG+.pdf
- Description:
- IC ADC 16BIT 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,248
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Product details
Overview
The MAX1168CCEG+ from Maxim Integrated is a 16-bit, 8-channel, 200ksps successive-approximation ADC with integrated +4.096V reference, internal oscillator, SPI/QSPI/MICROWIRE-compatible interface, and DSP frame-sync support. It operates from a single +5V analog supply and separate +2.7V to +5.5V digital supply, enabling direct interfacing with mixed-voltage microcontrollers in industrial data-acquisition systems.
For engineers reviewing the MAX1168CCEG+ datasheet, MAX1168CCEG+ pinout, MAX1168CCEG+ application, or MAX1168CCEG+ equivalent, this page delivers verified electrical specifications, confirmed pin functions, temperature-rated performance (0°C to +70°C), and real-world selection guidance for multichannel precision measurement designs.
Technical Context
The MAX1168CCEG+ implements a fully integrated SAR architecture with on-chip track-and-hold (4MHz input bandwidth), programmable 8-/16-bit serial data-transfer modes, and dual-clock operation (internal 4MHz oscillator or external up to 9MHz SCLK). Its analog front-end supports both internal reference (±25ppm/°C drift) and external reference inputs (3.8V to AVDD − 0.2V).
DSP-initiated conversion is enabled via dedicated DSPR (frame-sync receive) and DSPX (frame-sync transmit) pins, while DSEL selects data width - eliminating glue logic in DSP-centric motor control and sensor fusion applications. Scan mode allows sequential or continuous conversion of up to eight analog inputs without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes over full temperature range - guarantees monotonicity and linearity for precision control feedback loops. |
| Sampling Rate | 200ksps maximum with external clock - supports real-time capture of fast transients in motor current sensing and vibration monitoring. |
| INL | ±3 LSB max (0°C to +70°C) - enables accurate thermocouple and strain gauge measurements without per-unit calibration. |
| SINAD | 85 dB typical at 1kHz - ensures >13.5 effective number of bits (ENOB) for high-fidelity signal reconstruction. |
| Supply Current | 3.6mA at 200ksps (AVDD = DVDD = +5V), 185µA at 10ksps - reduces thermal load and extends battery life in portable instrumentation. |
| Reference | +4.096V internal (±25ppm/°C), or external 3.8V–AVDD−0.2V - simplifies BOM by eliminating external reference ICs in space-constrained designs. |
| Input Channels | 8 single-ended analog inputs (AIN0–AIN7) - supports simultaneous monitoring of multiple sensors in industrial I/O modules. |
Pinout & Package
The MAX1168CCEG+ is housed in a 24-pin QSOP package (5.3mm × 7.2mm, 0.635mm pitch), optimized for high-density PCB layouts in industrial control and test equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DOUT | Serial Data Output | MSB-first unipolar output; high-impedance when CS = high - enables shared bus operation with other SPI peripherals. |
| SCLK | Serial Clock Input | Drives conversion timing and clocks data; supports 9MHz max frequency - determines minimum conversion latency and throughput. |
| DIN | Serial Data Input | Accepts command/configuration register writes; edge-sensitive (rising/falling based on mode) - configures scan sequence, data width, and power-down state. |
| EOC | End-of-Conversion Flag | Active-low pulse in internal clock mode; remains high in external clock mode - provides hardware-ready signaling for interrupt-driven firmware. |
| AIN0–AIN7 | Analog Input Channels | Single-ended inputs referenced to AGND; 45pF input capacitance - requires low-impedance drive (<200Ω) or external buffer for full AC performance. |
| REF / REFCAP | Reference Voltage Interface | REF accepts external reference or outputs internal +4.096V; REFCAP connects 0.1µF bypass for internal reference stability - critical for DC accuracy and temperature drift control. |
| DSPR / DSPX | DSP Frame-Sync Interface | DSPR initiates conversion on frame-sync pulse; DSPX asserts frame-sync when result ready - enables deterministic, low-latency synchronization with TI C2000 or ADI SHARC processors. |
| DSEL | Data Width Select | Logic high = 16-bit transfer mode (longer acquisition, better noise immunity); logic low = 8-bit mode (faster throughput) - trade-off between resolution fidelity and system bandwidth. |
| CS | Chip Select | Active-low enable; high state forces shutdown (0.6µA) - primary hardware control for power gating and multi-device bus arbitration. |
| AGND / DGND | Analog & Digital Grounds | Separate ground pins require star-point connection at AVDD/DVDD decoupling - prevents digital switching noise from degrading analog measurement integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated +4.096V Reference | Eliminates external reference IC and associated layout complexity; ±25ppm/°C drift supports stable measurements across 0°C to +70°C operating range. |
| DSP Frame-Sync Interface (DSPR/DSPX) | Enables zero-software-overhead, cycle-accurate triggering and notification with TI C2000 or ADI Blackfin DSPs - removes polling delays and improves real-time determinism. |
| Configurable 8-/16-Bit Data Transfer | DSEL pin selects mode: 16-bit mode adds acquisition time for improved SNR with high-Z sources (>1kΩ); 8-bit mode halves serial transaction time for high-throughput scanning. |
| AutoShutdown™ Power Management | Reduces current to 185µA at 10ksps and <10µA at lower rates - extends runtime in battery-powered field instruments without sacrificing wake-up responsiveness. |
| Scan Mode Operation | Hardware-automated sequential conversion of all 8 channels or continuous sampling of one channel - offloads CPU and ensures consistent timing in closed-loop control. |
Applications
| Motor Control | Industrial Process Control |
|---|---|
|
Use Scenario: Real-time sampling of three-phase motor currents and DC bus voltage in servo drives. IC Role / Device Role / Timing Role: 16-bit ADC digitizing analog feedback signals with synchronized frame-triggering via DSPR/DSPX for precise PWM alignment. Use Value: Enables current-loop bandwidth >10kHz and torque ripple reduction through high-SNR, low-latency acquisition of fast-switching waveforms. |
Use Scenario: Monitoring pressure, temperature, and flow sensors in PLC analog input modules. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC performing sequential scans with auto-power-down between conversions to minimize self-heating error. Use Value: Delivers ±0.01% FSR accuracy across 0°C to +70°C without per-channel calibration, reducing factory test time and cost. |
| Thermocouple Measurements | Accelerometer Measurements |
|
Use Scenario: Cold-junction compensation and millivolt-level thermocouple signal conditioning in furnace controllers. IC Role / Device Role / Timing Role: High-DC-accuracy ADC with internal reference and 16-bit resolution capturing slow-varying mV outputs with minimal offset drift. Use Value: Achieves <±1°C total system error over full temperature range using only the MAX1168CCEG+ and basic op-amp front-end. |
Use Scenario: Digitizing wideband vibration signals from MEMS accelerometers in predictive maintenance sensors. IC Role / Device Role / Timing Role: 4MHz input bandwidth ADC acquiring 10kHz+ spectral content with 85dB SINAD for FFT-based fault detection. Use Value: Captures bearing defect frequencies up to 5kHz with sufficient ENOB to distinguish early-stage mechanical anomalies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8688IPWR | 8-channel, 16-bit SAR ADC with ±10.24V input range, integrated PGA (gain 1–128), and 500ksps max rate; requires external reference. | Better suited for bipolar or high-voltage industrial sensors; lacks DSP frame-sync and internal reference. | Select when measuring ±5V or ±10V signals directly; avoid if internal reference or DSP sync is required. |
| AD7606BSTZ | 8-channel, 16-bit simultaneous-sampling SAR ADC with on-chip analog front-end, ±10V input, and parallel/SPI interface; 200ksps per channel. | Supports true simultaneous sampling for phase-critical applications (e.g., power quality analysis); larger LQFP-64 package. | Choose for multi-phase energy metering where channel-to-channel skew must be <100ns; not drop-in due to pinout and interface differences. |
Compared with ADS8688IPWR and AD7606BSTZ, the MAX1168CCEG+ offers unique integration of internal reference, DSP frame-sync, and ultra-low standby current - making it optimal for cost-sensitive, space-constrained, and DSP-tight industrial control nodes where simplicity and deterministic timing outweigh simultaneous sampling needs.
Availability
MAX1168CCEG+ is available at Aetrix Electronics and suitable for motor control, industrial process control, and thermocouple measurement applications requiring stable component supply, commercial-temperature-grade reliability, and long-term production continuity.
Supply support for MAX1168CCEG+ 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 industrial, automotive, and communications markets.
The MAX1168CCEG+ belongs to Maxim's high-accuracy, low-power SAR ADC product line, engineered specifically for space- and power-constrained industrial data-acquisition systems requiring integrated references and DSP-friendly interfaces.
FAQ
What is the operating temperature range for the MAX1168CCEG+?
The MAX1168CCEG+ is rated for the commercial temperature range of 0°C to +70°C, as indicated by the "C" suffix in its ordering code. This grade is validated for use in industrial control panels, test equipment, and factory automation systems where ambient temperatures remain within this envelope. The device maintains full specification compliance-including ±3 LSB INL and 85 dB SINAD-across this range.
Does the MAX1168CCEG+ support both internal and external reference configurations?
Yes, the MAX1168CCEG+ supports dual reference modes: internal +4.096V (buffered, ±25ppm/°C drift) and external reference (3.8V to AVDD − 0.2V). When using the internal reference, connect REFCAP to AGND with a 0.1µF capacitor and bypass REF with 1µF. In external mode, the internal reference and buffer shut down automatically to reduce power consumption - a key feature confirmed in the Electrical Characteristics table.
How does the DSP frame-sync interface work on the MAX1168CCEG+?
The MAX1168CCEG+ uses DSPR (input) to accept a frame-sync pulse from a DSP, initiating conversion, and DSPX (output) to assert a frame-sync pulse when the result is ready at DOUT. This eliminates software polling and enables deterministic, low-latency synchronization - essential for real-time motor control. The interface operates only in external clock mode and requires proper configuration of the command register to enable DSP mode.
What are the power consumption characteristics of the MAX1168CCEG+ at different sampling rates?
The MAX1168CCEG+ features AutoShutdown™ that scales supply current with sample rate: 3.6mA at 200ksps, 1.85mA at 100ksps, 185µA at 10ksps, and <10µA below 1ksps. Full shutdown (CS = high) draws just 0.6µA. These values are measured with AVDD = DVDD = +5V and internal reference active - enabling aggressive power budgeting in portable or energy-harvested sensor nodes.
Can the MAX1168CCEG+ perform continuous conversion on a single channel?
Yes, the MAX1168CCEG+ supports scan mode, which can be configured to continuously convert a single selected channel (e.g., AIN0) or sequentially cycle through all eight inputs. This is controlled via the command/configuration register and requires no host CPU intervention once initiated - ideal for closed-loop control systems needing uninterrupted feedback sampling at fixed intervals.
MAX1168CCEG+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 24-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1168CCEG+ FAQ
1.How can I place an order for MAX1168CCEG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1168CCEG+ 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 MAX1168CCEG+ reliable?
The price and inventory of MAX1168CCEG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1168CCEG+ is usually 5 days.
3.What payment methods are accepted for MAX1168CCEG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1168CCEG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1168CCEG+?
MAX1168CCEG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1168CCEG+ 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 MAX1168CCEG+?
For technical support, including MAX1168CCEG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1168CCEG+ requirements.
6.How does Aetrix verify that MAX1168CCEG+ is sourced from the original manufacturer or authorized distributors?
All MAX1168CCEG+ 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 MAX1168CCEG+ meets industry standards.
7.What is the process for return or replacement of MAX1168CCEG+?
All MAX1168CCEG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1168CCEG+, 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 MAX1168CCEG+ part is unused and in its original packaging.
Return procedure for MAX1168CCEG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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