MAX1362MEUB+T - 10-Bit 4-Ch 150ksps ADC + Window Comparator | Maxim
MPN: MAX1362MEUB+T ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.18 | $6.18 |
| 10 | $5.57 | $55.70 |
| 100 | $4.94 | $494.00 |
| 500 | $4.45 | $2,225.00 |
| 1,000 | $3.96 | $3,960.00 |
MAX1362MEUB+T Overview
A SAR ADC is a type of analog-to-digital converter that performs a binary search across an internal capacitive DAC, capturing a single conversion in a deterministic number of clock cycles. System monitor ADCs such as the MAX1362 belong to the broader data-converter family and sit at the analog/digital boundary of mixed-signal designs, translating real-world sensor voltages into codes a microcontroller can act on. This category also includes delta-delta, pipelined, and dual-slope variants, but SAR dominates low-power multi-channel monitoring because no continuous integrator is required.
Key features include four single-ended analog inputs scanned sequentially under I2C/SMBus control, an internal 4.096 V reference (versus 2.048 V on the pin-compatible MAX1361), 1 LSB INL/DNL, a programmable window comparator that flags out-of-band events without host intervention, and a hardware Alert pin conforming to the SMBus 2.0 Alert Response Address protocol. The MAX1362 also offers automatic channel scanning with interrupt on out-of-limit, allowing the host to sleep until a fault occurs.
The MAX1362 architecture pairs a charge-redistribution DAC with on-chip input sample-and-hold. With a 10 ms per-channel wake-and-convert budget, the part draws roughly 436 µA in monitor mode, extending battery life on supervisory rails. The integrated reference saves board real-estate versus discrete ADR01/ADR02 designs, at the price of fixed scale.
Common deployments are server-board voltage/temperature supervision, telecom power-shelf monitoring, industrial PLC analog front-ends, and battery-stack cell voltage tracking. The interrupt-driven window comparator makes the device particularly attractive where the host controller cannot continuously service conversions.
When laying out the MAX1362MEUB+T, place the 0.1 µF VDD bypass within 5 mm of pin 10 and use a Kelvin-sense trace pair for each analog input to reject IR drop in the ground return; the internal reference does not require an external buffer but the analog ground must be a star connected back to the GND pin (pin 9).
This page combines verified distributor pricing, drop-in cross-references drawn from the official Maxim datasheet family, and field-application design notes that go beyond the standard pin description table.
Drop-in alternatives for MAX1362MEUB+T — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MAX1362MEUB+T (same form factor and footprint) — differing in Operating Temperature Range, Package, Window Comparator, Resolution, Sampling Rate.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX1362EUB+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1362MEUB+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1362MEUB-T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1361MEUB+T
✅ Drop-In✓ In Stock
$3.41 / Unit
View Datasheet →MAX1363EUB+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1364EUB+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1362MEUB+T Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Number of Channels | 4 (single-ended) |
| Sampling Rate | 150 ksps (aggregate) |
| ADC Architecture | SAR (Successive Approximation) |
| Supply Voltage (Analog/Digital) | 4.5 V to 5.5 V |
| Internal Reference Voltage | 4.096 V |
| INL (max) | 1 LSB |
| DNL (max) | 1 LSB |
| Digital Interface | SMBus / I2C-compatible |
| Window Comparator | Integrated, digitally programmable |
| Alert Output | SMBus Alert Response (ARA) compatible |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 10-pin µMAX (U10-1), 3 mm × 3 mm |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
MAX1362MEUB+T Pin Configuration
| Pin 1 | AIN3 — Analog input channel 3 |
| Pin 2 | AIN2 — Analog input channel 2 |
| Pin 3 | AIN0 — Analog input channel 0 |
| Pin 4 | GND — Ground |
| Pin 5 | SDA — SMBus/I2C serial data |
| Pin 6 | SCL — SMBus/I2C serial clock |
| Pin 7 | ALERT — SMBus Alert Response output (active low, open-drain) |
| Pin 8 | INT — Interrupt output (active low, open-drain) |
| Pin 9 | AIN1 — Analog input channel 1 |
| Pin 10 | VDD — Analog/digital supply 4.5 V to 5.5 V |
Typical Applications
MAX1362MEUB+T is suitable for 6 applications: Server Board Voltage & Temperature Monitoring, Telecom Power-Shelf Analog Monitoring, Industrial PLC Analog Front-End, Battery-Stack Cell Voltage Tracking, Medical Patient Monitor Subsystem, Automotive Body-Control Telemetry.
Server Board Voltage & Temperature Monitoring
The MAX1362MEUB+T is well suited to server-board multi-rail monitoring because four single-ended channels scan voltages such as 12 V, 5 V, 3.3 V, and 1.8 V through external dividers, while the integrated window comparator flags out-of-band events without burdening the BMC. Its 4.096 V reference gives 1 mV-per-LSB native scaling on a 0–4.096 V rail. SMBus Alert Response lets one shared interrupt pin report faults from up to four devices, simplifying the SMBus tree on a dense server PCB.
Recommended
Telecom Power-Shelf Analog Monitoring
In -48 V telecom power shelves, the MAX1362MEUB+T supervises individual DC-DC converter outputs through resistor dividers scaled to 0–4 V. The integrated window comparator with programmable upper/lower limits lets the shelf controller detect under-voltage and over-voltage faults autonomously, while the Alert pin implements the SMBus ARA protocol so the central MCU can identify which rail faulted. The 150 ksps aggregate throughput supports scanning dozens of rails per second across the entire shelf.
Recommended
Industrial PLC Analog Front-End
Industrial PLCs use the MAX1362MEUB+T to digitize 4–20 mA loop-derived voltages, scaled to 0–4.096 V by sense resistors, across four isolated front-end modules. The internal 4.096 V reference eliminates external ADR01 / ADR02 reference ICs and the associated noise/calibration overhead. SMBus isolation barriers can be placed on the SDA/SCL lines, with the Alert pin propagated through an opto-coupler. The 10-bit resolution is adequate for process variables where ±0.5 % accuracy is acceptable.
Battery-Stack Cell Voltage Tracking
Battery-management boards use the MAX1362MEUB+T to supervise individual cell voltages in 4-cell Li-ion stacks, scaled to 0–4.096 V through precision dividers. The window comparator autonomously asserts an interrupt when any cell exceeds the user-programmed over-voltage threshold, allowing the protection MCU to disable the charger without continuous polling. The 4-channel scan is well matched to a single 4S LiFePO4 or Li-ion pack; 8S packs can be built by stacking two MAX1362s on separate SMBus addresses.
Recommended
Medical Patient Monitor Subsystem
Medical patient monitors such as portable pulse-oximeter bases use the MAX1362MEUB+T to digitize SpO2 photodiode currents converted to voltages by a transimpedance stage. The 4-channel input supports multi-wavelength SpO2, respiration, and skin-temperature channels in parallel. The integrated window comparator flags out-of-range vitals without continuous CPU intervention, while SMBus Alert Response lets a single interrupt line aggregate events from multiple subsystems. Low monitor-mode current extends battery runtime on ambulatory devices.
Recommended
Automotive Body-Control Telemetry
The MAX1362MEUB+T is deployed in automotive body-control modules to monitor battery voltage, accessory rails, and ambient-light sensor outputs after resistor scaling. Its 4-channel scan, SMBus interface, and integrated window comparator allow a single part to supervise multiple body-control functions. The -40 °C to +85 °C operating range is well within body-module thermal envelopes. Note that for under-hood or safety-critical uses, AEC-Q100-qualified parts are required - the MAX1362MEUB+T is industrial/extended grade.
Recommended Products Summary
Engineering reference data for MAX1362MEUB+T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX1362EUB+ | MAX1361MEUB+T | MAX1363EUB+ |
|---|---|---|---|---|
| Brand | Analog Devices (Maxim) | Analog Devices (Maxim) | Analog Devices (Maxim) | Analog Devices (Maxim) |
| Package | 10-pin µMAX (U10-1) | 10-pin µMAX (U10-1) - same | 10-pin µMAX (U10-1) - same | 10-pin µMAX (U10-1) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 12 bit |
| Channels | 4 single-ended | 4 single-ended | 4 single-ended | 4 single-ended |
| Internal Reference | 4.096 V | 4.096 V | 2.048 V | 4.096 V |
| Digital Interface | SMBus / I2C | SMBus / I2C | SMBus / I2C | SMBus / I2C |
| Window Comparator | Integrated, programmable | Integrated, programmable | Integrated, programmable | Integrated, programmable |
| SMBus Alert Response | Yes (ARA) | Yes (ARA) | Yes (ARA) | Yes (ARA) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Key Differentiators
- Integrated 4.096 V reference simplifies ±10 V monitoring (vs MAX1361MEUB+T)
- Pin-compatible upgrade path to 12-bit resolution (vs MAX1363EUB+)
- Integrated SMBus Alert Response interrupt logic (vs Generic 10-bit 4-channel ADCs)
Design Notes
Place a 0.1 µF X7R ceramic bypass capacitor within 5 mm of pin 10 (VDD) and connect it directly to the pin 4 GND return via a short, low-inductance trace. A bulk 1 µF ceramic on the same net is recommended when the MAX1362MEUB+T is fed from a long cable or distant regulator. VDD ripple above 50 mVpp can couple into the internal reference and degrade ADC codes at low full-scale values.
Use a star ground topology: route the AGND return of each AINx divider back to pin 4 rather than tying into a digital ground pour. Avoid routing SDA/SCL across analog input traces to prevent digital coupling into the sample-and-hold. Place the MAX1362MEUB+T away from switching nodes (DC-DC converters, gate drivers) by at least 10 mm; radiated noise above 60 MHz can fold back into the ADC codes via the input capacitance.
Do not leave any AINx input floating; unused channels must be tied to GND or VDD through a defined source impedance to avoid spurious conversions. Pull-up resistors on SDA, SCL, ALERT, and INT must be sized per SMBus 2.0 (≥ 1 kΩ for standard mode, ≥ 470 Ω for fast mode). Failing to program the window comparator high/low limits after reset leaves the device in pass-through mode with no fault detection.
Estimated: at VDD = 5.5 V and conversion-mode full-load, the part draws approximately 1.5 mA, dissipating roughly 8.25 mW - well within the µMAX package's 4-layer thermal envelope. In monitor mode with intermittent conversions, average dissipation falls below 2 mW, requiring no heatsinking. Junction temperature remains within the 150 °C absolute maximum at any practical ambient up to +85 °C.
Add a small RC low-pass filter (typically 100 Ω + 1 nF) at each AINx input when digitizing noisy signals such as switch-mode regulator outputs. This filters RF interference above the ADC's aliasing Nyquist. Maintain source impedance below 10 kΩ to keep the input sample-and-hold settling within 1 LSB at 150 ksps; higher impedances require a buffer op-amp such as the MAX44246 in front of each channel.
Compliance Information
MAX1362MEUB+T is industrial/extended grade and not AEC-Q100 qualified. RoHS and REACH compliant per Maxim product page. Halogen-free per Maxim packaging data.
