MAX1254AEUE+T - 12-Bit 10-Ch ADC System Monitor | Maxim Integrated
Teilenummer: MAX1254AEUE+T ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $8.92 | $89,20 |
| 100 | $7.65 | $765,00 |
| 500 | $6.48 | $3.240,00 |
| 1.000 | $5.72 | $5.720,00 |
MAX1254AEUE+T Übersicht
A system monitor (or supervisory ADC) is a type of mixed-signal data-acquisition IC that combines an analog-to-digital converter with housekeeping functions such as power-supply supervision, temperature sensing, and fault thresholds. It sits hierarchically under data acquisition (DAQ) -> ADC -> mixed-signal IC -> power management IC, and is typically deployed as the analog front end for board-level telemetry and health monitoring. Compared with discrete ADC plus thermistor plus supervisor solutions, a system monitor integrates these functions into one die surface to save PCB area and BOM cost.
Key features include 12-bit resolution, 10 single-ended analog inputs, an internal 4.096V voltage reference, integrated temperature sensor covering -40 to +85 C with +/-2 C typical accuracy, dedicated VDD monitor input, and AutoShutdown reducing supply current to less than 8 uA at low sampling rates. The device also supports 94 ksps maximum sampling rate per channel in single-channel conversion mode, with hardware-configurable single-ended inputs and an SPI-compatible serial interface.
Architecturally the MAX1254AEUE+T uses a successive-approximation register (SAR) ADC core with input track-and-hold, on-chip reference buffer, and a sequencer that automates channel scanning. A state machine plus on-chip result RAM enables stand-alone operation without continuous host intervention, which is why Maxim labels it "stand-alone". The internal temperature sensor uses a bandgap-derived proportional-to-absolute-temperature (PTAT) cell digitized by the same SAR converter through an internal MUX.
Typical applications include telecom equipment health monitoring, server board telemetry, industrial control panel supervision, basestation power amplifier thermal monitoring, and battery-charging voltage and temperature monitoring. The 5V analog supply and 12-bit resolution make it well suited for 0-5V industrial transducer signal chains.
When designing with this device, ensure the analog supply is well decoupled with a 10 uF bulk plus 0.1 uF ceramic cap at AVDD, and provide a logic-level translation scheme if interfacing to 3.3V microcontrollers on DIN. The internal reference is stable but should be bypassed externally with a 1 uF to 10 uF capacitor on REF for low-noise operation.
This page synthesizes distributor pricing, same-package drop-in alternatives from the Maxim MAX1253/MAX1254 family, design notes, and a side-by-side parametric comparison not found in a single manufacturer datasheet view.
Drop-in-Alternativen für MAX1254AEUE+T – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MAX1254AEUE+T (gleiche Bauform und Footprint) – abweichend in Package, Resolution, Analog Input Range, Digital Interface, Function.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MAX1253AEUE+T
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX1254BEUE+T
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MAX1254CEUE+T
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MAX1154AEUE+T
✅ Drop-In✓ Auf Lager
$4.45 / Stück
Datenblatt ansehen →MAX1156AEUP+T
✅ Drop-In✓ Auf Lager
$7.8 / Stück
Datenblatt ansehen →MAX1254AEUE+T Grenzwerte & elektrische Eigenschaften
| Funktion | System Monitor / Supervisor ADC |
| Auflösung | 12 bit |
| Number of Channels | 10 (single-ended) |
| Abtastrate | 94 ksps (max, single-channel) |
| Supply Voltage (Analog) | 4.5 V to 5.5 V |
| Supply Voltage (Digital) | 4.5 V to 5.5 V |
| Internal Reference | 4.096 V |
| Betriebstemperatur | -40 C to +85 C |
| Interner Temperatursensor | Yes |
| VDD Monitor Input | Yes |
| Schnittstelle | SPI-compatible serial |
| AutoShutdown Current | < 8 uA (low sample rate) |
| Gehäuse | TSSOP-16 |
| Montageart | Surface Mount |
| MSL-Level | 1 |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
MAX1254AEUE+T Pin-Konfiguration
| Pin 1 | AIN0 — Analog Input 0 |
| Pin 2 | AIN1 — Analog Input 1 |
| Pin 3 | AIN2 — Analog Input 2 |
| Pin 4 | AIN3 — Analog Input 3 |
| Pin 5 | AIN4 — Analog Input 4 |
| Pin 6 | AIN5 — Analog Input 5 |
| Pin 7 | AIN6 — Analog Input 6 |
| Pin 8 | AIN7 — Analog Input 7 |
| Pin 9 | AIN8 — Analog Input 8 |
| Pin 10 | AIN9 — Analog Input 9 |
| Pin 11 | REF — Reference Voltage Input/Output (4.096V) |
| Pin 12 | AVDD — Analog Supply Voltage (4.5V to 5.5V) |
| Pin 13 | GND — Ground |
| Pin 14 | DVDD — Digital Supply Voltage (4.5V to 5.5V) |
| Pin 15 | DOUT — Serial Data Output (SPI) |
| Pin 16 | DIN — Serial Data Input (SPI) |
Typische Anwendungen
MAX1254AEUE+T ist geeignet für 6 Anwendungs: Telecom Equipment Health Monitoring, Server Board Telemetry, Industrial Control Panel Supervision, Basestation Power Amplifier Thermal Monitoring, Battery Charging Voltage and Temperature Monitoring, Multichannel Data Acquisition Systems.
Telecom Equipment Health Monitoring
The MAX1254AEUE+T fits telecom equipment health monitoring because it integrates 10 analog input channels, an internal temperature sensor, and a VDD monitor in a single TSSOP-16 IC that operates from the standard 5V telecom rail. With 12-bit resolution and 94 ksps sampling, the device can digitize multiple power supply rails, fan tachometer voltages, and board temperature points simultaneously. Unlike a discrete ADC plus thermistor plus supervisor solution, the MAX1254AEUE+T combines these functions into one die to save PCB area and BOM cost in compact line-interface cards. The AutoShutdown feature reduces quiescent current to less than 8 uA at low sample rates, ideal for always-on telemetry where continuous scanning is not required. The internal 4.096V reference is stable and bypassed externally for low-noise conversion. The TSSOP-16 package is footprint-compatible with the MAX1253AEUE+T, enabling layout reuse across 8-channel and 10-channel designs.
Empfohlen
Server Board Telemetry
The MAX1254AEUE+T is well suited for server board telemetry applications because its 10 single-ended analog inputs can monitor CPU voltage rails, memory banks, and fan power outputs simultaneously through the internal SAR ADC. With 12-bit resolution and a 4.5V to 5.5V supply range, the part accepts the 5V standby rail common in server motherboards. The internal temperature sensor provides CPU and chassis thermal data without external thermistors, while the dedicated VDD monitor input supplies a separate housekeeping channel. The SPI-compatible serial interface integrates with baseboard management controllers (BMCs) for remote monitoring. The TSSOP-16 package reduces board footprint compared to discrete ADC plus supervisor solutions, which is critical for dense server layouts. AutoShutdown reduces supply current to under 8 uA at low throughput, supporting energy-conscious idle states.
Empfohlen
Industrial Control Panel Supervision
The MAX1254AEUE+T fits industrial control panel supervision because its 12-bit resolution provides adequate accuracy for 0-10V or 0-5V transducer signal chains common in PLCs and process instrumentation. The 10 single-ended analog inputs can digitize multiple sensor signals, including pressure, flow, and temperature transducer outputs, all through one integrated IC. The internal temperature sensor enables panel-enclosure thermal monitoring, while the VDD monitor input tracks the 24V-to-5V regulator output for fault detection. Per the Maxim datasheet, the operating temperature range of -40 C to +85 C supports industrial enclosure environments. The TSSOP-16 surface-mount package is suitable for wave-soldered or reflow-soldered industrial boards. AutoShutdown reduces quiescent current below 8 uA at low scan rates, supporting energy-conscious panel designs.
Empfohlen
Basestation Power Amplifier Thermal Monitoring
The MAX1254AEUE+T is ideal for basestation power amplifier thermal monitoring because its 12-bit resolution and 10-channel input count can digitize multiple PA drain current shunts, bias voltages, and thermistor outputs simultaneously. The internal temperature sensor adds board-level thermal data, and the dedicated VDD monitor tracks the PA supply rail for fault detection. Per the Maxim datasheet, the 5V analog supply range accepts standard basestation 5V housekeeping rails. AutoShutdown reduces supply current below 8 uA at low sampling rates, supporting energy-conscious idle states in macro and small-cell basestations. The TSSOP-16 package provides a compact footprint suitable for RF PA daughter cards. The internal 4.096V reference simplifies external reference circuitry and supports ratiometric conversion with shunt-resistor current sensing.
Empfohlen
Battery Charging Voltage and Temperature Monitoring
The MAX1254AEUE+T fits battery charging voltage and temperature monitoring because its 10 analog input channels can monitor individual cell voltages, pack current shunt, and battery thermistor inputs simultaneously. The internal temperature sensor provides onboard charger thermal data, and the VDD monitor tracks the charger supply rail for fault detection. With 12-bit resolution and the internal 4.096V reference, the part provides sufficient accuracy for lithium-ion cell voltage monitoring within the 4.5V to 5.5V analog supply. AutoShutdown reduces supply current to under 8 uA in low-activity scan modes, supporting battery-powered charger idle states. The TSSOP-16 package provides a compact footprint for handheld and portable charger designs. Per the Maxim datasheet, the -40 C to +85 C operating range supports outdoor charger enclosures.
Empfohlen
Multichannel Data Acquisition Systems
The MAX1254AEUE+T suits multichannel data acquisition systems because its 12-bit SAR ADC delivers 94 ksps on a single channel and supports stand-alone channel sequencing without host intervention. The 10 single-ended analog inputs can be scanned automatically through the on-chip sequencer and result RAM, simplifying host firmware. The internal 4.096V reference eliminates external reference parts, and the AutoShutdown feature reduces supply current below 8 uA at low throughput, enabling battery-powered DAQ designs. The SPI-compatible serial interface integrates with most microcontrollers and FPGAs. Per the Maxim datasheet, the TSSOP-16 package is footprint-compatible with the 8-channel MAX1253AEUE+T, enabling PCB reuse across channel-count variants. The -40 C to +85 C operating range covers industrial DAQ environments.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MAX1254AEUE+T – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MAX1253AEUE+T | MAX1254BEUE+T | MAX1254CEUE+T | MAX1154AEUE+T | MAX1156AEUP+T |
|---|---|---|---|---|---|---|
| Package | TSSOP-16 | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-20 - upgraded |
| Brand | Maxim Integrated | Maxim Integrated - same | Maxim Integrated - same | Maxim Integrated - same | Maxim Integrated - same | Maxim Integrated - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Number of Channels | 10 (single-ended) | 8 (single-ended) | 10 (single-ended) | 10 (single-ended) | 1 (single-channel SAR) | 8 (single-ended) |
| Supply Voltage Range | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| Internal Temperature Sensor | Yes | Yes | Yes | Yes | No | Yes |
Wichtigste Unterscheidungsmerkmale
- 10 channels in TSSOP-16 package footprint (vs. MAX1253AEUE+T)
- Stand-alone channel sequencing with on-chip result RAM (vs. MAX1154AEUE+T)
- Integrated temperature sensor and VDD monitor (vs. MAX1154AEUE+T)
Designhinweise
Decouple AVDD and DVDD separately with a 10 uF bulk capacitor plus a 0.1 uF ceramic capacitor placed within 5 mm of each supply pin. Per the Maxim datasheet, the internal reference requires an external 1 uF to 10 uF bypass capacitor on REF for low-noise operation. Avoid sharing the AVDD bypass return path with digital switching currents to prevent reference noise coupling.
Route the SPI signals (CS, DIN, DOUT, SCLK) as short traces and place a 33 ohm series resistor at DOUT if the trace exceeds 50 mm to limit ringing. Keep analog input traces away from digital switching signals; place a ground fill under the analog inputs to reduce capacitive coupling. The TSSOP-16 thermal pad (if present) should be soldered to a ground copper pour for thermal relief.
Do not exceed the absolute maximum AVDD/DVDD rating of 6V. The internal reference is stable but sensitive to load transients; do not draw more than 1 mA from REF. When interfacing to a 3.3V host microcontroller, add a logic-level translator on DIN, DOUT, SCLK, and CS, because VIH and VOH are referenced to DVDD (5V). Per the Maxim datasheet, the AutoShutdown feature must be enabled through configuration register writes to achieve < 8 uA idle current.
Compliance-Informationen
RoHS compliant per Maxim Integrated product page. Lead-free finish confirmed. AEC-Q100 qualification not applicable for this non-automotive-grade part.
