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NXP Semiconductors NE1617ADS,112
- Part No.:
- NE1617ADS,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Analog and Digital Output
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
NE1617ADS,112.pdf
- Description:
- SENSOR DIGITAL -40C-125C 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,961
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Product details
Overview
NE1617ADS,112 from NXP Semiconductors is a dual-channel SMBus temperature monitor IC that measures local (on-die) and remote (diode-connected transistor) temperatures with ±2 °C accuracy at 60–100 °C for local sensing and ±3 °C over the same range for remote sensing. It features programmable over/undertemperature alarms, one-shot conversion mode, and hardware/software standby control - deployed in microprocessor thermal management systems such as desktop and notebook CPU thermal monitoring.
For engineers reviewing the NE1617ADS,112 datasheet, NE1617ADS,112 pinout, NE1617ADS,112 application, or NE1617ADS,112 equivalent, key selection criteria include its 16-pin SSOP package, SMBus 2-wire interface up to 100 kHz, 3–5.5 V supply range, 70 μA operating current, and support for Intel Pentium III–compatible thermal diodes.
Technical Context
The NE1617ADS,112 integrates an analog multiplexer, integrating A-to-D converter, and SMBus interface to sequentially sample local and remote diode sensors using two precision current sources (10 μA and 100 μA). Temperature data is stored in 8-bit two's complement format across dedicated registers (RIT/RET), updated per conversion cycle.
Its fault detection logic monitors D+/D− open/short conditions and asserts ALERT on limit violations or sensor disconnection. Address configuration via ADD0/ADD1 supports nine unique SMBus slave addresses, enabling multi-device thermal monitoring on a single bus without conflict.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 5.5 V - compatible with both 3.3 V and 5 V system rails; 5.5 V tolerant inputs |
| Operating Current | 70 μA typical at 3.3 V - enables low-power thermal monitoring without burdening system power budget |
| Standby Current | 3 μA typical - reduces power during idle periods while retaining register state and SMBus responsiveness |
| Local Accuracy | ±2 °C from 60 °C to 100 °C - meets tight thermal throttling requirements for CPU die temperature tracking |
| Remote Accuracy | ±3 °C from 60 °C to 100 °C - calibrated for Intel Pentium III substrate PNP diodes and discrete 2N3904/2N3906 transistors |
| SMBus Speed | Up to 100 kHz - supports standard-mode SMBus timing without requiring high-speed bus infrastructure |
| Conversion Rate | Programmable from 0.0625 Hz to 8 Hz - allows trade-off between update latency and average supply current (67–180 μA) |
Pinout & Package
NE1617ADS,112 is housed in a 16-lead plastic shrink small outline package (SSOP16, SOT519-1), 3.9 mm body width, 0.635 mm lead pitch - optimized for compact PCB layouts in space-constrained computing modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TEST1) | Factory test pin | Not connected in application circuits; must float or tie to GND per datasheet guidance |
| 2 (VDD) | Positive supply | Requires 0.1 μF decoupling capacitor to ground for stable ADC operation |
| 3 (D+) | Remote sensor positive terminal | Connects to emitter of PNP or base/collector of NPN diode-connected transistor |
| 4 (D−) | Remote sensor negative terminal | Connects to collector of PNP or emitter of NPN; forms differential pair with D+ |
| 6 (ADD1), 10 (ADD0) | Address select inputs | Three-state logic (GND/VDD/n.c.) sets one of nine SMBus slave addresses |
| 7, 8 (GND) | Ground reference | Dual ground pins reduce noise coupling into analog measurement path |
| 11 (ALERT) | Open-drain interrupt output | Active-low signal indicating temperature limit violation or remote diode fault; requires external 10 kΩ pull-up |
| 12 (SDATA) | SMBus bidirectional data | Open-drain I/O; shares bus with other SMBus slaves; supports write/read/send/receive protocols |
| 14 (SCLK) | SMBus clock input | Master-generated clock synchronizes all SMBus transactions |
| 15 (STBY) | Hardware standby control | LOW forces immediate standby mode; inhibits ADC conversion and one-shot commands |
Key Features
| Feature | Design Value |
|---|---|
| No calibration required | Uses 10:1 ratio current sourcing to eliminate diode saturation current dependency - ensures absolute temperature linearity without factory trimming |
| Remote diode compatibility | Validated for Intel Pentium III substrate PNP diodes and discrete 2N3904/2N3906 transistors - eliminates need for custom sensor characterization |
| Programmable alarm thresholds | Separate high/low limits for local and remote channels stored in nonvolatile-equivalent registers - enables independent thermal trip points per sensor |
| One-shot conversion mode | Initiates immediate temperature acquisition on command - supports on-demand diagnostics without altering free-running update rate |
| ESD robustness | 2000 V HBM / 1000 V CDM - withstands handling and board-level ESD events common in PC manufacturing environments |
Applications
| Desktop Computers | Notebook Computers |
|---|---|
Use Scenario: Real-time CPU and chipset thermal monitoring during sustained workloads and thermal throttling events. IC Role / Device Role / Timing Role: Dual-channel temperature monitor providing local die and remote VRM/heat sink temperature feedback to BIOS or EC firmware. Use Value: Enables precise thermal margining and dynamic frequency scaling based on validated ±2 °C local accuracy and SMBus-accessible registers. | Use Scenario: Compact thermal supervision of CPU, GPU, and battery pack in space-constrained mobile platforms. IC Role / Device Role / Timing Role: SMBus slave device delivering synchronized local/remote temperature readings to embedded controller for fan speed and power state control. Use Value: Leverages 3 μA standby current and hardware STBY pin to minimize quiescent power during sleep states without losing thermal context. |
| Smart Battery Packs | Industrial Controllers |
Use Scenario: Monitoring cell stack temperature and protection circuit temperature in Li-ion battery management systems. IC Role / Device Role / Timing Role: Remote diode interface to thermistor or PNP substrate sensor; local sensor tracks BMS IC junction temperature. Use Value: Uses open-drain ALERT output to trigger immediate battery shutdown on overtemperature - critical for safety-critical cutoff response. | Use Scenario: Thermal oversight of PLC CPU modules, motor drive FETs, and power supply sections in factory automation equipment. IC Role / Device Role / Timing Role: Standalone SMBus temperature node reporting to industrial backplane controller via shared system management bus. Use Value: Nine configurable addresses allow up to nine NE1617ADS,112 units on one bus - simplifies multi-zone thermal mapping without address conflicts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1617EEE+ | Pin-compatible but Maxim停产型号; identical SMBus protocol and register map; ±2.5 °C local accuracy over 0–70 °C only | Limited industrial temp range (−40 °C to +85 °C vs. NE1617ADS,112's −40 °C to +125 °C) | Use only if legacy MAX1617 design reuse is required and extended temperature operation is not needed. |
| ADM1021ARQZ | Functionally similar dual-channel SMBus monitor; ±3 °C local accuracy at 25 °C; no hardware STBY pin - standby controlled solely via SMBus register | Lacks dedicated STBY pin; requires software polling to enter/exit standby - increases firmware complexity | Prefer when board layout already accommodates ADM1021 footprint and SMBus-only control suffices. |
Compared with MAX1617EEE+ and ADM1021ARQZ, NE1617ADS,112 offers broader operating temperature (−40 °C to +125 °C), hardware STBY pin for deterministic low-power entry, and tighter local accuracy (±2 °C) across CPU-relevant ranges - making it optimal for modern microprocessor thermal management where reliability and responsiveness are critical.
Availability
NE1617ADS,112 is available at Aetrix Electronics and suitable for desktop computers, notebook computers, and industrial controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for NE1617ADS,112 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The NE1617ADS,112 belongs to NXP's precision analog sensor product line, designed specifically for high-accuracy thermal monitoring in microprocessor-based systems where SMBus integration and multi-sensor capability are essential.
FAQ
What is the operating temperature range of the NE1617ADS,112?
The NE1617ADS,112 operates across −40 °C to +125 °C ambient temperature. Its local sensor achieves ±2 °C accuracy from 60 °C to 100 °C and ±3 °C from −40 °C to +125 °C; remote sensor accuracy is ±3 °C (60–100 °C) and ±5 °C (−40 °C to +125 °C). This range supports deployment in demanding CPU and industrial environments where junction temperatures exceed 100 °C.
How does the NE1617ADS,112 interface with remote temperature sensors?
The NE1617ADS,112 interfaces with remote diode-connected transistors via D+ and D− pins, sourcing 10 μA and 100 μA currents to measure ΔVBE. It supports Intel Pentium III substrate PNP diodes and discrete transistors like 2N3904/2N3906. An external 2200 pF capacitor between D+ and D− is recommended to filter high-frequency noise without introducing measurement error.
Does the NE1617ADS,112 require calibration during system integration?
No, the NE1617ADS,112 requires no calibration. Its dual-current-source architecture cancels out diode saturation current variation, yielding temperature-proportional output directly traceable to absolute temperature. The device is factory trimmed for ideality factor n = 1.008, and offset correction can be applied via register if using non-standard diodes - but baseline operation is fully calibrated out-of-box.
What are the power modes supported by the NE1617ADS,112?
The NE1617ADS,112 supports three power modes: normal operation (70 μA typical), software standby (set RUN/STOP bit in config register; retains SMBus activity), and hardware standby (STBY pin LOW; disables ADC and one-shot). In hardware standby, supply current drops to <10 μA with registers retained - enabling rapid wake-up without reinitialization.
Can multiple NE1617ADS,112 devices share the same SMBus?
Yes, up to nine NE1617ADS,112 devices can coexist on a single SMBus. Address pins ADD0 and ADD1 accept GND/VDD/n.c. states, generating nine unique 7-bit slave addresses (e.g., 0011000 to 1001110). Address latching occurs at power-up and before each conversion, ensuring stable addressing even with floating pins - critical for multi-node thermal monitoring.
NE1617ADS,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local/Remote
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -40°C ~ 125°C
- Output Type:
- SMBus
- Voltage - Supply:
- 3V ~ 5.5V
- Resolution:
- 7 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Standby Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- 60°C ~ 100°C (0°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SSOP
NE1617ADS,112 FAQ
1.How can I place an order for NE1617ADS,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for NE1617ADS,112 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 NE1617ADS,112 reliable?
The price and inventory of NE1617ADS,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NE1617ADS,112 is usually 5 days.
3.What payment methods are accepted for NE1617ADS,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NE1617ADS,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NE1617ADS,112?
NE1617ADS,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NE1617ADS,112 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 NE1617ADS,112?
For technical support, including NE1617ADS,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NE1617ADS,112 requirements.
6.How does Aetrix verify that NE1617ADS,112 is sourced from the original manufacturer or authorized distributors?
All NE1617ADS,112 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 NE1617ADS,112 meets industry standards.
7.What is the process for return or replacement of NE1617ADS,112?
All NE1617ADS,112 units undergo pre-shipment inspection (PSI). If there is an issue with NE1617ADS,112, 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 NE1617ADS,112 part is unused and in its original packaging.
Return procedure for NE1617ADS,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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