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Analog Devices Inc./Maxim Integrated MAX1282BEUE+
- Part No.:
- MAX1282BEUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1282BEUE+.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,977
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Product details
Overview
MAX1282BEUE+ from Maxim Integrated is a 12-bit, 4-channel, single-supply serial analog-to-digital converter (ADC) with internal +2.5V reference, 400ksps sampling rate, ±1 LSB INL, and TSSOP-16 package. It features software-configurable unipolar/bipolar and single-ended/pseudo-differential inputs, integrated track/hold, and SPI/QSPI/MICROWIRE-compatible 4-wire interface - used in portable data loggers and battery-powered medical instruments.
For engineers reviewing the MAX1282BEUE+ datasheet, MAX1282BEUE+ pinout, MAX1282BEUE+ application, or MAX1282BEUE+ equivalent, this page delivers verified electrical specs, thermal range (-40°C to +85°C), power modes (FULLPD = 2µA), and real-world interface timing for embedded system integration.
Technical Context
The MAX1282BEUE+ uses successive-approximation register (SAR) architecture with integrated track-and-hold, supporting 400ksps conversion at 6.4MHz SCLK. Its analog input multiplexer enables channel selection via 3-bit control word, and pseudo-differential mode operates on CH0/CH1 or CH2/CH3 pairs with COM as stable reference node.
It implements four software-selectable power modes (normal, REDP, FASTPD, FULLPD) and automatic wake-on-CS assertion. The internal reference buffer provides ±1.5% adjustability via REFADJ, and external reference support ranges from 1V to VDD with disable control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR - delivers 4096 discrete output codes with monotonic transfer function and no missing codes over temperature. |
| Sampling Rate | 400ksps - supports real-time acquisition of signals up to 200kHz full-linear bandwidth (−3dB point). |
| INL / DNL | ±1 LSB / ±1 LSB - ensures accurate code transition alignment and linearity critical for precision measurement systems. |
| Reference | Internal +2.500V ±0.8mV (±15ppm/°C TC) - eliminates need for external reference IC in space-constrained designs. |
| Supply Range | +4.5V to +5.5V - compatible with standard 5V logic rails and industrial power domains. |
| Power Consumption | 2.5mA (normal), 2µA (FULLPD) - enables ultra-low-power operation between conversions in battery-powered applications. |
| Operating Temp | −40°C to +85°C - qualified for industrial and extended-temperature embedded deployments. |
Pinout & Package
MAX1282BEUE+ is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad for thermal enhancement. Pin functions are validated per Maxim's 19-1688 Rev 0 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Positive supply inputs | Must be tied together and decoupled; dual VDD pins reduce supply noise coupling into analog section. |
| GND | Analog/digital ground | Single ground plane required; COM and analog inputs referenced to this node for ±0.5LSB stability. |
| CH0–CH3, COM | Analog input terminals | Support 4-channel single-ended or 2-channel pseudo-differential; COM sets zero-code voltage in SE mode. |
| REF, REFADJ | Reference buffer I/O | REF outputs 2.500V; REFADJ adjusts output ±1.5% or disables buffer when pulled to VDD1. |
| SCLK, DIN, DOUT, CS, SSTRB | Serial interface signals | 4-wire SPI-compatible interface; SSTRB provides strobe synchronized to MSB decision for DSP interfacing. |
| SHDN | Hardware shutdown control | Active-low input reduces supply current to 2µA; overrides software power modes for emergency low-power state. |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel analog mux + track/hold | Enables sequential sampling across sensors without external signal conditioning or sample-hold circuitry. |
| Software-configurable input mode | Single-ended or pseudo-differential operation selected via control byte - adapts to diverse sensor output types (e.g., thermocouples vs. RTDs). |
| Four programmable power modes | Reduces average current by >99% in FULLPD; auto-wake on CS allows burst-mode acquisition with minimal latency. |
| SPI/QSPI/MICROWIRE/TMS320 compatibility | Direct connection to microcontrollers and DSPs without level shifters or glue logic - simplifies firmware driver development. |
| Internal +2.5V reference with ±15ppm/°C TC | Meets 12-bit accuracy requirements over −40°C to +85°C without external trimming or calibration. |
Applications
| Portable Data Logging | Medical Instrumentation |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure at 100Hz intervals. IC Role / Device Role / Timing Role: ADC digitizes conditioned analog outputs from multiple sensors; internal reference ensures consistent scaling across operating temperature. Use Value: 2µA FULLPD current extends battery life to >5 years; 400ksps headroom supports future firmware upgrades adding vibration analysis. |
Use Scenario: Handheld ECG monitor acquiring lead-II differential signals with high common-mode rejection. IC Role / Device Role / Timing Role: Pseudo-differential mode digitizes CH0/CH1 pair; COM referenced to right-leg drive amplifier output for noise cancellation. Use Value: ±1 LSB INL preserves diagnostic waveform fidelity; 200kHz full-linear bandwidth captures QRS complex harmonics without aliasing. |
| Battery-Powered Test Equipment | Industrial Process Control |
Use Scenario: Portable multimeter measuring DC voltage, resistance, and diode drop using autoranging front-end. IC Role / Device Role / Timing Role: Configures CH0–CH3 for different attenuation/gain paths; unipolar mode maps 0–5V input to 0x000–0xFFF output. Use Value: Single 5V supply simplifies power architecture; internal reference eliminates drift-induced calibration drift during field use. |
Use Scenario: PLC analog input module monitoring 4–20mA transmitters across 4 channels in factory automation cabinet. IC Role / Device Role / Timing Role: CH0–CH3 accept conditioned current-loop voltages; bipolar mode supports offset calibration for zero-point adjustment. Use Value: −40°C to +85°C rating ensures reliability in uncontrolled environments; 76dB IMD prevents crosstalk between adjacent channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7816U | 8-pin SOIC, 200ksps, no internal reference, requires external REF (2.5V), 3.3V-only supply | Limited to lower-speed, single-channel systems with existing reference infrastructure | Choose when board space is constrained and external reference already available. |
| AD7490BRUZ | 16-pin TSSOP, 1MSPS, internal 2.5V ref, 2.7–5.25V supply, 16-channel mux, SPI-compatible | Higher speed and channel count; larger die size increases cost and power in static applications | Choose when upgrading to higher throughput or expanding channel density beyond 4 inputs. |
Compared with ADS7816U and AD7490BRUZ, MAX1282BEUE+ uniquely balances 400ksps performance, integrated reference, low-power FULLPD mode, and industrial temperature range in a compact TSSOP-16 - making it optimal for cost-sensitive, battery-operated 4-channel measurement systems requiring long-term stability.
Availability
MAX1282BEUE+ is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1282BEUE+ 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, medical, and communications applications.
The MAX1282BEUE+ belongs to Maxim's high-accuracy, low-power SAR ADC product line - engineered specifically for battery-operated and space-constrained measurement systems needing integrated reference and flexible input configuration.
FAQ
What is the maximum sampling rate supported by the MAX1282BEUE+?
The MAX1282BEUE+ supports a maximum sampling rate of 400ksps under specified conditions: VDD = +4.5V to +5.5V, fSCLK = 6.4MHz, and 16 clocks per conversion cycle. This rate is achievable only in normal operating mode with proper layout and decoupling; reduced-power modes lower effective throughput due to longer acquisition times.
Does the MAX1282BEUE+ require an external reference voltage?
No, the MAX1282BEUE+ includes an internal +2.500V reference with ±0.8mV initial accuracy and ±15ppm/°C temperature coefficient. An external reference can be used by disabling the internal buffer via REFADJ, but it is not required - the internal reference meets 12-bit linearity specifications across −40°C to +85°C.
How does the pseudo-differential input mode work on the MAX1282BEUE+?
In pseudo-differential mode, the MAX1282BEUE+ samples only the positive input (IN+) while holding the negative input (IN-) stable at COM or a selected channel. Valid pairs are CH0/CH1 and CH2/CH3. The IN- node must remain within ±0.5LSB of GND during conversion; dynamic signals on IN- introduce error unless amplitude and frequency satisfy tCONV-dependent limits.
What are the power-down current levels for the MAX1282BEUE+?
The MAX1282BEUE+ offers four power states: normal (2.5mA), reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA typical). FULLPD is entered via SHDN pin or software command; wake-up occurs automatically on CS assertion with <1µs turn-on time - enabling true burst-mode acquisition.
Is the MAX1282BEUE+ pin-compatible with the MAX1283BEUE+?
No, the MAX1282BEUE+ and MAX1283BEUE+ are not pin-compatible despite identical TSSOP-16 packaging. They differ in supply voltage range (MAX1282: 4.5–5.5V; MAX1283: 2.7–3.6V), clock frequency (6.4MHz vs. 4.8MHz), and sampling rate (400ksps vs. 300ksps). Interchange requires PCB redesign and firmware adaptation.
MAX1282BEUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 2, 4
- Input Type:
- Pseudo-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1282BEUE+ FAQ
1.How can I place an order for MAX1282BEUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1282BEUE+ 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 MAX1282BEUE+ reliable?
The price and inventory of MAX1282BEUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1282BEUE+ is usually 5 days.
3.What payment methods are accepted for MAX1282BEUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1282BEUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1282BEUE+?
MAX1282BEUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1282BEUE+ 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 MAX1282BEUE+?
For technical support, including MAX1282BEUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1282BEUE+ requirements.
6.How does Aetrix verify that MAX1282BEUE+ is sourced from the original manufacturer or authorized distributors?
All MAX1282BEUE+ 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 MAX1282BEUE+ meets industry standards.
7.What is the process for return or replacement of MAX1282BEUE+?
All MAX1282BEUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1282BEUE+, 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 MAX1282BEUE+ part is unused and in its original packaging.
Return procedure for MAX1282BEUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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