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Analog Devices Inc./Maxim Integrated MAX1383ATP+
- Part No.:
- MAX1383ATP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX1383ATP+.pdf
- Description:
- IC ADC 12BIT SAR 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:120
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Product details
Overview
The MAX1383ATP+ from Maxim Integrated is a dual, simultaneous-sampling, 12-bit SAR ADC with ±10V input range, 1.25Msps per channel throughput, internal 2.50V reference, and SPI/QSPI/MICROWIRE-compatible serial interface - designed for high-precision industrial motor control and process monitoring where bipolar signal acquisition and timing coherence between channels are critical.
For engineers reviewing the MAX1383ATP+ datasheet, MAX1383ATP+ pinout, MAX1383ATP+ application, or MAX1383ATP+ equivalent, this device delivers verified simultaneous sampling, full-scale ±10V analog input capability, automotive-grade temperature operation (–40°C to +125°C), and TQFN-EP package compatibility with layout-constrained industrial PCBs.
Technical Context
The MAX1383ATP+ implements two independent 12-bit successive approximation register (SAR) ADCs sharing a common conversion clock and control logic, enabling true simultaneous sampling with matched aperture delay (≤2ns) and jitter (≤30ps). Its analog front-end supports either true-differential or dual single-ended inputs per channel, with configurable unipolar/bipolar mode via U/B pin.
It features a 20MHz SPI-compatible 3-wire serial interface with user-selectable single-output (0.625Msps max) or dual-output (1.25Msps max) modes, and operates from a 4.75V–5.25V analog supply and 1.8V–AVDD digital supply - allowing direct interfacing with low-voltage microcontrollers without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - provides 4096 discrete output codes for precise quantization of industrial sensor signals. |
| Sampling Rate | 1.25Msps per ADC (dual-output mode) - enables real-time capture of fast transients in motor phase currents or vibration sensors. |
| Analog Input Range | ±10V - directly interfaces with industrial ±10V PLC I/O modules and isolated amplifier outputs without external scaling. |
| SINAD | 71dB (bipolar, fIN = 100kHz) - ensures >68dB effective resolution for high-fidelity signal reconstruction in noise-sensitive environments. |
| Full-Power Bandwidth | 10MHz - supports accurate digitization of wideband feedback signals up to 10MHz before –3dB attenuation. |
| Power Consumption | 280mW normal operation, 2.5µW full power-down - enables energy-efficient burst-mode acquisition in battery-backed or thermally constrained systems. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive motor control and industrial drive enclosures. |
Pinout & Package
The MAX1383ATP+ is housed in a 20-pin thin quad flat no-lead exposed pad (TQFN-EP) package, measuring 4mm × 4mm × 0.8mm, with thermal pad for enhanced heat dissipation in high-current industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 REFSEL | Reference select input | Logic-level control to switch between internal 2.50V reference (REFSEL = DGND) or external reference (REFSEL = VL). |
| 2 REF | Reference I/O | Output of internal 2.50V reference (bypass ≥1µF to RGND) or input for external reference voltage (1.25V–2.5V). |
| 3 RGND | Reference ground | Common negative reference point for bipolar mode; shared return for all four analog inputs in unipolar mode. |
| 4, 18 AGND | Analog ground | Dedicated low-noise ground return for analog circuitry; must be separated from DGND and connected at single point. |
| 5 AVDD | Analog supply | 4.75V–5.25V analog power rail; requires 10µF || 10nF bypassing to AGND for stable reference and conversion performance. |
| 6 AIN2A | Channel 2 positive input | Primary analog input for ADC2; accepts ±10V differential or single-ended signals depending on U/B and S/D configuration. |
| 7 AIN2B | Channel 2 negative input | Secondary analog input for ADC2; used with AIN2A for true-differential acquisition or as second single-ended input. |
| 8 AIN1B | Channel 1 negative input | Secondary analog input for ADC1; paired with AIN1A for differential mode or used independently in mux mode. |
| 9 AIN1A | Channel 1 positive input | Primary analog input for ADC1; supports ±10V full-scale range with matched input impedance (10kΩ) and capacitance (10pF). |
| 10 CNVST | Convert start input | Edge-triggered command to initiate simultaneous sampling on both ADCs; timing-critical for synchronized acquisition. |
| 11 SCLK | Serial clock | 20MHz max master clock for SPI-compatible interface; controls data transfer timing for DOUT1/DOUT2 outputs. |
| 12 CS | Chip select | Active-low enable for serial interface; allows multiple devices on shared bus with individual addressing. |
| 13 DOUT1 | ADC1 serial output | Independent 12-bit result output for ADC1; enables parallel data readout at full 1.25Msps rate when S/D = 0. |
| 14 DOUT2 | ADC2 serial output | Independent 12-bit result output for ADC2; eliminates inter-channel latency in dual-output mode. |
| 15 DGND | Digital ground | Return path for digital I/O; must be isolated from AGND except at system star point to prevent noise coupling. |
| 16 VL | Digital supply | 1.8V–AVDD logic supply; powers digital interface and control logic; enables direct connection to 1.8V/3.3V/5V µCs. |
| 17 SEL | Input selection control | Configures input multiplexing: selects between AIN1A/AIN1B and AIN2A/AIN2B pairs for sequential sampling. |
| 19 U/B | Unipolar/bipolar mode | Defines input range: U/B = DGND → unipolar (0V to VREF); U/B = VL → bipolar (±VREF/2 or ±10V). |
| 20 S/D | Single/dual output mode | S/D = DGND → dual-output mode (1.25Msps); S/D = VL → single-output mode (0.625Msps) for µCs with one serial input. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling | Two independent 12-bit SAR ADCs with ≤2ns aperture-delay matching ensures coherent capture of phase-shifted motor currents or vibration signals. |
| ±10V input range | Direct interface with industrial ±10V analog I/O standards eliminates external gain/level-shifting circuitry and reduces BOM cost. |
| Internal 2.50V reference | Stable 2.50V ±20mV reference with ±50ppm/°C drift enables consistent full-scale accuracy across automotive temperature range. |
| 20MHz SPI-compatible interface | High-speed serial interface supports 1.25Msps dual-output throughput while maintaining compatibility with legacy DSP and µC platforms. |
| Full automotive temperature range | Specified from –40°C to +125°C with guaranteed performance metrics, enabling use in engine control units and industrial inverters. |
| Low-power full shutdown | 2.5µW full power-down current allows rapid wake-up (<2ms) for event-triggered acquisition without compromising system energy budget. |
Applications
| Industrial Motor Control | Process Monitoring Systems |
|---|---|
|
Use Scenario: Real-time acquisition of three-phase motor currents and DC bus voltage in variable-frequency drives. IC Role / Device Role / Timing Role: Dual simultaneous-sampling ADC captures phase-aligned current waveforms with <2ns inter-channel skew for precise field-oriented control (FOC) algorithms. Use Value: Enables accurate torque estimation and dynamic response without software interpolation or hardware delay compensation. |
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensors in chemical plant PLC racks. IC Role / Device Role / Timing Role: Digitizes ±10V analog outputs from industrial transmitters using internal 2.50V reference and bipolar mode. Use Value: Eliminates external signal conditioning, reduces calibration drift, and maintains 12-bit linearity over –40°C to +125°C ambient. |
| Automotive Battery Management | Test & Measurement Equipment |
|
Use Scenario: High-accuracy cell voltage and pack current sensing in EV traction battery packs. IC Role / Device Role / Timing Role: Simultaneously samples isolated shunt voltage and cell stack voltages with matched acquisition timing for SOC/SOH calculation. Use Value: Reduces measurement uncertainty in Coulomb counting by eliminating time-skew-induced errors between current and voltage readings. |
Use Scenario: Portable oscilloscope front-end capturing dual-channel analog waveforms up to 10MHz bandwidth. IC Role / Device Role / Timing Role: Provides 12-bit, 1.25Msps simultaneous sampling with 10MHz full-power bandwidth for real-time waveform analysis. Use Value: Supports alias-free acquisition of fast transients and harmonics in power electronics validation without external sample-and-hold circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8588SIPM | 16-bit resolution, 1.25Msps, ±10V input, but requires external reference and has higher 550mW power consumption. | Better resolution for precision metrology; less suitable for thermally constrained or battery-powered systems. | Select when 16-bit ENOB and lower THD (–95dB) outweigh power and BOM complexity trade-offs. |
| AD7327BRUZ | 12-bit, ±10V input, 1Msps, internal reference, but only supports sequential (not simultaneous) sampling with 100ns inter-channel skew. | Lower cost for non-coherent multi-channel acquisition; unsuitable for FOC or phase-angle-critical measurements. | Choose when simultaneous sampling is not required and system design prioritizes footprint and supply simplicity over timing coherence. |
Compared with the ADS8588SIPM and AD7327BRUZ, the MAX1383ATP+ uniquely balances simultaneous 12-bit sampling, ±10V full-scale range, sub-3µW shutdown power, and automotive temperature qualification - making it optimal for space- and energy-constrained industrial motor control designs requiring deterministic timing.
Availability
The MAX1383ATP+ is available at Aetrix Electronics and suitable for industrial motor control, process monitoring, and automotive battery management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1383ATP+ 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, automotive, and communications markets.
The MAX1383ATP+ belongs to Maxim's precision data acquisition product line, engineered specifically for industrial automation and motor control systems demanding simultaneous sampling, wide input voltage range, and robust operation in harsh thermal environments.
FAQ
What is the maximum analog input voltage range supported by the MAX1383ATP+?
The MAX1383ATP+ supports a ±10V analog input range in bipolar mode, verified across its full operating temperature range (–40°C to +125°C). This is achieved through internal scaling and protection circuitry that allows direct connection to industrial ±10V sensor outputs and PLC I/O modules without external attenuators or level shifters. The absolute maximum rating extends to ±12V for transient overvoltage tolerance.
Does the MAX1383ATP+ require an external reference voltage, or does it include an internal reference?
The MAX1383ATP+ includes an internal 2.50V reference (2.48V to 2.52V, ±50ppm/°C) that is enabled by default when REFSEL is tied low. An external reference (1.25V–2.5V) can be applied at the REF pin when REFSEL is high - providing flexibility for systems requiring tighter reference accuracy or different full-scale ranges. No external reference is required for standard ±10V operation.
How does the MAX1383ATP+ achieve simultaneous sampling across both ADC channels?
The MAX1383ATP+ uses a shared track-and-hold (T/H) architecture with matched input paths and a single CNVST input that triggers both ADCs at the exact same instant. Aperture delay matching is guaranteed ≤2ns, and aperture jitter is ≤30ps - ensuring coherent sampling of phase-related signals such as motor current pairs. This is implemented in hardware, not firmware, eliminating software-induced skew.
What power supply configurations are supported by the MAX1383ATP+?
The MAX1383ATP+ requires two independent supplies: AVDD (4.75V–5.25V) for analog circuitry and VL (1.8V–AVDD) for digital I/O. This dual-supply architecture allows direct interfacing with 1.8V, 3.3V, or 5V microcontrollers without level translators. AGND and DGND must be separated and joined at a single point to minimize digital noise coupling into analog measurements.
Is the MAX1383ATP+ pin-compatible with other members of the MAX1377/MAX1379/MAX1383 family?
Yes, the MAX1383ATP+ shares identical pinout and package (20-pin TQFN-EP) with the MAX1377ATP+ and MAX1379ATP+, enabling drop-in replacement in existing layouts. However, supply voltage requirements differ: MAX1383ATP+ requires 4.75V–5.25V AVDD (vs. 2.7V–3.6V for MAX1377), and its ±10V input range is unique to the MAX1383 variant - other family members support only 0–VREF or ±VREF/2 ranges.
MAX1383ATP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1.25M
- Number of Inputs:
- 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- 3-Wire Serial, Microwire, QSPI, SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 1.8V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 20-TQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1383ATP+ FAQ
1.How can I place an order for MAX1383ATP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1383ATP+ 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 MAX1383ATP+ reliable?
The price and inventory of MAX1383ATP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1383ATP+ is usually 5 days.
3.What payment methods are accepted for MAX1383ATP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1383ATP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1383ATP+?
MAX1383ATP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1383ATP+ 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 MAX1383ATP+?
For technical support, including MAX1383ATP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1383ATP+ requirements.
6.How does Aetrix verify that MAX1383ATP+ is sourced from the original manufacturer or authorized distributors?
All MAX1383ATP+ 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 MAX1383ATP+ meets industry standards.
7.What is the process for return or replacement of MAX1383ATP+?
All MAX1383ATP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1383ATP+, 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 MAX1383ATP+ part is unused and in its original packaging.
Return procedure for MAX1383ATP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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