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Analog Devices Inc./Maxim Integrated MAX1283BCUE
- Part No.:
- MAX1283BCUE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1283BCUE.pdf
- Description:
- 4-CHANNEL, SERIAL 12-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:705
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Product details
Overview
MAX1283BCUE from Maxim Integrated is a 12-bit, 4-channel serial analog-to-digital converter (ADC) operating from a single +2.7V to +3.6V supply, featuring internal +2.5V reference, 300ksps sampling rate, and software-configurable unipolar/bipolar pseudo-differential inputs - used in battery-powered medical instruments and portable data loggers.
For engineers reviewing the MAX1283BCUE datasheet, MAX1283BCUE pinout, MAX1283BCUE application, or MAX1283BCUE equivalent, this page delivers verified electrical specs, TSSOP-16 pin functions, real-world use cases, and two validated alternative ADCs for low-voltage, multi-channel acquisition systems.
Technical Context
The MAX1283BCUE employs successive-approximation register (SAR) architecture with integrated track/hold and 4-channel analog multiplexer. It uses an external serial clock (up to 4.8MHz) to drive conversion timing and supports SPI/QSPI/MICROWIRE-compatible 4-wire interface with SSTRB strobe output for TMS320 DSP synchronization.
It features four software-selectable power modes (normal, reduced-power, fast power-down, full power-down), enabling dynamic current scaling from 2.5mA down to 2µA. Input configuration is programmable for single-ended or pseudo-differential operation, with COM pin serving as common-mode reference and zero-code anchor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes over full-scale range, sufficient for precision sensor digitization in portable instrumentation. |
| Sampling Rate | 300ksps - supports Nyquist-limited bandwidth up to 150kHz; enables capture of audio-band and low-MHz transients via undersampling. |
| Supply Voltage | +2.7V to +3.6V - compatible with Li-ion and 3.3V system rails without level-shifting; eliminates need for dedicated ADC supply. |
| INL / DNL | ±1.0 LSB / ±1.0 LSB - ensures monotonicity and <0.025% full-scale linearity error, critical for closed-loop control and calibration-sensitive measurements. |
| Reference | Internal +2.500V ±1.5% - buffered, adjustable via REFADJ pin; removes external reference component while maintaining 12-bit accuracy across temperature. |
| Power Modes | Normal (2.5mA), REDP (1.3mA), FASTPD (0.9mA), FULLPD (2µA) - allows adaptive power management between conversions in energy-constrained devices. |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade embedded applications including handheld test equipment and industrial HMI front-ends. |
Pinout & Package
MAX1283BCUE is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch), thermally enhanced for compact PCB layouts and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Positive supply inputs | Must be tied together and decoupled locally; dual pins reduce IR drop and improve PSR in high-speed conversion cycles. |
| GND | Analog/digital ground reference | Single ground plane required; separates analog input return (COM) from digital I/O return to minimize noise coupling. |
| CH0–CH3, COM | Analog input channels and common reference | Supports 4 single-ended or 2 pseudo-differential pairs; COM sets zero-code voltage and must remain stable within ±0.5LSB. |
| REF, REFADJ | Reference buffer output / adjustment terminal | REF provides 2.500V ±1.5%; pulling REFADJ to VDD1 disables internal buffer for external reference use (1V to VDD). |
| SCLK, DIN, DOUT, CS, SSTRB | Serial interface signals | 4-wire SPI-compatible interface; SSTRB enables direct TMS320 sync; CS controls tri-state outputs and initiates conversion sequence. |
| SHDN | Hardware shutdown control | Active-low pin reduces supply current to 2µA (typ); complements software power modes for ultra-low-quiescent standby. |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel analog multiplexer + track/hold | Enables sequential sampling of multiple sensors without external signal conditioning; acquisition time ≤625ns ensures fidelity at 300ksps. |
| Software-configurable input mode | Single-ended or pseudo-differential operation selected via control byte; supports bipolar measurement (±VREF/2) without external op-amps. |
| Internal reference buffer with ±1.5% accuracy | Eliminates external reference IC and trimming components; REFADJ allows fine-tuning or disabling for precision external references. |
| Four selectable power modes | Full power-down (2µA) enables >100-hour battery life in intermittent-sampling applications; automatic wake-on-CS simplifies firmware design. |
| TSSOP-16 package with thermal pad option | Compact footprint fits space-constrained portable designs; exposed pad (if present) improves thermal resistance by ~30°C/W vs. standard TSSOP. |
Applications
| Portable Data Logging | Medical Instruments |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure over 72-hour intervals. IC Role / Device Role / Timing Role: ADC digitizes four analog sensor outputs sequentially using internal multiplexer and auto-shutdown between samples. Use Value: 2.5mA active current and 2µA full power-down extend CR2032 battery life beyond 12 months; internal reference ensures consistent calibration across temperature. |
Use Scenario: Handheld ECG monitor acquiring lead-I, II, III signals plus respiration waveform at bedside. IC Role / Device Role / Timing Role: Configured in pseudo-differential mode to reject common-mode noise from patient-coupled electrodes; COM referenced to Wilson central terminal. Use Value: ±1.0 LSB INL/DNL maintains diagnostic accuracy; 300ksps supports 100Hz Nyquist bandwidth with margin for filtering and oversampling. |
| Battery-Powered Instruments | Process Control Sensors |
Use Scenario: Field-deployable pH/ORP meter with LCD display, microcontroller, and USB charging circuitry. IC Role / Device Role / Timing Role: Digitizes calibrated analog output from ion-selective electrode amplifier; uses unipolar mode with COM = GND. Use Value: Single 3.3V supply simplifies power architecture; internal 2.5V reference avoids drift from LDO output tolerance and load regulation. |
Use Scenario: Modular PLC analog input module measuring 4–20mA loop signals from pressure, flow, and level transmitters. IC Role / Device Role / Timing Role: Interfaces to isolated current-to-voltage converters; configured for single-ended inputs with programmable gain via external resistor network. Use Value: 0°C to +70°C rating matches industrial enclosure ambient; channel-to-channel offset matching (±0.2 LSB) minimizes inter-channel calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, multi-channel, serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200ksps, +2.7V to +5.25V supply, no internal reference - requires external 2.5V ref and driver. | Lower resolution limits use in precision medical or calibration-critical systems; better suited for cost-sensitive industrial monitoring. | Select when 8-bit accuracy suffices and board space permits external reference + op-amp driver. |
| MAX11100ETE+ | 12-bit, 500ksps, +2.7V to +3.6V, internal 2.048V ref, 8-channel, SPI-only (no SSTRB), 16-TQFN package. | Higher channel count and speed but lacks TMS320 strobe support; TQFN requires different layout and reflow profile than TSSOP. | Choose for higher throughput or more channels where DSP sync is not required and TQFN assembly is available. |
Compared with ADS7822U and MAX11100ETE+, the MAX1283BCUE uniquely balances 12-bit precision, 300ksps speed, TMS320-compatible strobe output, and TSSOP-16 manufacturability - making it optimal for battery-powered, DSP-linked portable instrumentation where layout simplicity and reference stability are critical.
Availability
MAX1283BCUE is available at Aetrix Electronics and suitable for portable data logging, battery-powered medical instruments, and industrial process sensor interfaces requiring stable component supply and long-term production continuity.
Supply support for MAX1283BCUE 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 demanding industrial, medical, and communications applications.
The MAX1282/MAX1283 family targets low-power, multi-channel data acquisition in space- and energy-constrained systems - delivering integrated signal chain functionality (MUX, T/H, reference, serial interface) in minimal footprint.
FAQ
What is the maximum sampling rate supported by the MAX1283BCUE?
The MAX1283BCUE supports a maximum sampling rate of 300ksps, achieved with a 4.8MHz serial clock and 16-clock conversion cycle. This rate is specified under conditions of +2.7V to +3.6V supply, fSCLK = 4.8MHz, and TA = 0°C to +70°C. At lower clock frequencies, the effective sampling rate scales linearly - e.g., 2.4MHz yields 150ksps. The MAX1283BCUE datasheet confirms this performance in the ELECTRICAL CHARACTERISTICS-MAX1283 table.
Does the MAX1283BCUE require an external reference voltage?
No, the MAX1283BCUE does not require an external reference voltage. It integrates a buffered +2.500V ±1.5% reference (VREF) with adjustable range via the REFADJ pin. External reference operation is optional: pulling REFADJ to VDD1 disables the internal buffer, allowing use of an external reference from 1.0V to VDD. The MAX1283BCUE's internal reference meets 12-bit accuracy requirements across its operating temperature range.
How many analog input channels does the MAX1283BCUE support, and what configurations are available?
The MAX1283BCUE supports four analog input channels (CH0–CH3) plus a common (COM) pin, configurable in either single-ended or pseudo-differential mode via software control. In single-ended mode, each channel references COM; in pseudo-differential mode, CH0/CH1 and CH2/CH3 form two differential pairs. The device does not support true differential sampling - only the positive input is actively sampled, while the negative side must remain stable within ±0.5LSB during conversion.
What power-saving modes are available on the MAX1283BCUE, and how do they affect supply current?
The MAX1283BCUE offers four software-selectable power modes: normal (2.5mA), reduced-power (REDP, 1.3mA), fast power-down (FASTPD, 0.9mA), and full power-down (FULLPD, 2µA). All modes retain register contents and allow automatic wake-up via CS or serial activity. FULLPD halts internal clocking and reference buffer, achieving ultra-low quiescent current ideal for intermittent-sampling battery applications. These values are measured at VDD = 3.0V and TA = +25°C per the MAX1283 electrical characteristics table.
Is the MAX1283BCUE pin-compatible with the MAX1282BCUE?
Yes, the MAX1283BCUE is pin-compatible with the MAX1282BCUE - both use identical 16-pin TSSOP packages and share identical pinout, interface protocol, and register map. The key difference lies in supply voltage range (MAX1282: +4.5V to +5.5V; MAX1283: +2.7V to +3.6V) and corresponding performance specs (e.g., MAX1282 achieves 400ksps, while MAX1283 achieves 300ksps). System-level replacement requires verifying supply rail compatibility and recalibrating timing parameters.
MAX1283BCUE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- 2, 4
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- 4-Wire Serial, 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1283BCUE FAQ
1.How can I place an order for MAX1283BCUE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1283BCUE 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 MAX1283BCUE reliable?
The price and inventory of MAX1283BCUE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1283BCUE is usually 5 days.
3.What payment methods are accepted for MAX1283BCUE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1283BCUE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1283BCUE?
MAX1283BCUE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1283BCUE 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 MAX1283BCUE?
For technical support, including MAX1283BCUE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1283BCUE requirements.
6.How does Aetrix verify that MAX1283BCUE is sourced from the original manufacturer or authorized distributors?
All MAX1283BCUE 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 MAX1283BCUE meets industry standards.
7.What is the process for return or replacement of MAX1283BCUE?
All MAX1283BCUE units undergo pre-shipment inspection (PSI). If there is an issue with MAX1283BCUE, 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 MAX1283BCUE part is unused and in its original packaging.
Return procedure for MAX1283BCUE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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