AD7314ARMZ - 10-Bit Digital Temp Sensor | Analog Devices
MPN: AD7314ARMZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.8182 | $6.82 |
| 10 | $4.9242 | $49.24 |
| 100 | $4.3561 | $435.61 |
| 500 | $4.1667 | $2,083.35 |
| 1,000 | $3.9773 | $3,977.30 |
Drop-in alternatives for AD7314ARMZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7314ARMZ-REEL7
✓ In Stock
$3.9773 / Unit
View Datasheet →AD7314ARM
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ADT7301ARMZ
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ADM1032ARMZ
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LM74CIM-3
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TMP121AIDBVR
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AD7314ARMZ Maximum Ratings & Electrical Characteristics
| Output Type | Digital |
| Sensor Type | Local |
| Temperature Range | -35°C to +85°C |
| Resolution | 10 bit (0.25°C/LSB) |
| Supply Voltage Range | 2.65 V to 5.5 V |
| Interface | SPI / MICROWIRE |
| Max Clock Frequency | 5 MHz |
| Accuracy | ±2°C |
| Package | 8-Lead MSOP |
| Mounting Type | Surface Mount |
| Supply Current | [DATA_NEEDED: Supply current] |
| Shutdown Mode | Yes |
| ID Pin | Yes (Pin 7, 1 kΩ pull-down) |
| RoHS Status | Compliant |
| Operating Temperature | -35°C to +85°C |
AD7314ARMZ Pin Configuration
| Pin 1 | SCLK — Serial clock input |
| Pin 2 | DIN — Serial data input |
| Pin 3 | DOUT — Serial data output |
| Pin 4 | CS — Chip select (active low) |
| Pin 5 | GND — Ground |
| Pin 6 | VDD — Power supply (2.65V to 5.5V) |
| Pin 7 | ID — Device ID (1 kΩ pull-down) |
| Pin 8 | NC — No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7314ARMZ is suitable for 6 applications: PC Thermal Management, Industrial Process Control, Environmental Monitoring, Battery Management Systems, Portable Medical Devices, Automotive Climate Control.
PC Thermal Management
The AD7314ARMZ monitors CPU or system temperature in desktop and laptop PCs. Its 10-bit resolution (0.25°C) and SPI interface allow direct connection to the motherboard's embedded controller or Super I/O chip. The small MSOP package fits in tight spaces near heat sources. With a supply range of 2.65V to 5.5V, it can operate from the 3.3V standby rail. The shutdown mode reduces power when the system is idle, contributing to energy efficiency. The ID pin enables multiple sensors on the same bus for monitoring different zones.
Recommended
Industrial Process Control
In industrial environments, the AD7314ARMZ provides accurate temperature readings for process control and equipment protection. Its -35°C to +85°C range covers most industrial applications. The SPI/MICROWIRE interface ensures compatibility with PLCs and microcontrollers. The device's low supply current and shutdown mode are beneficial for remote sensors powered over long cables. The ID pin allows multiple sensors to be addressed on a single bus, simplifying wiring in multi-zone monitoring systems. The ±2°C accuracy is sufficient for most control loops.
Recommended
Environmental Monitoring
The AD7314ARMZ is used in environmental monitoring systems to track ambient temperature in data centers, greenhouses, and weather stations. Its low power consumption and small size make it ideal for battery-powered loggers. The digital output eliminates the need for calibration and simplifies data acquisition. The device can be read via SPI by a microcontroller or Raspberry Pi. The shutdown mode extends battery life between readings. The wide supply voltage range allows operation from a single lithium cell or USB power.
Recommended
Battery Management Systems
In battery management systems (BMS), the AD7314ARMZ monitors battery pack temperature to prevent overheating and ensure safe charging. Its small footprint and low power consumption are ideal for integration into battery packs. The SPI interface allows the BMS controller to read temperature data quickly. The device's operating range of -35°C to +85°C covers the typical battery temperature range. The ID pin enables multiple sensors to monitor individual cells or modules. The shutdown mode reduces power draw when the BMS is idle.
Recommended
Portable Medical Devices
The AD7314ARMZ is suitable for portable medical devices that require temperature monitoring, such as wearable health monitors and portable diagnostic equipment. Its low supply voltage (2.65V to 5.5V) and low power consumption are critical for battery operation. The small MSOP package allows for compact device design. The digital output simplifies integration with microcontrollers and wireless transceivers. The device's accuracy of ±2°C is adequate for many medical applications, though higher accuracy may be needed for clinical thermometers. The shutdown mode helps extend battery life.
Recommended
Automotive Climate Control
The AD7314ARMZ can be used in automotive climate control systems to monitor cabin and ambient temperatures. Its operating range of -35°C to +85°C covers automotive temperature extremes. The SPI interface allows integration with the vehicle's body control module. The device's small size and low power consumption are beneficial for in-dash mounting. The ID pin enables multiple sensors for zone-based climate control. While not AEC-Q100 qualified, it can be used in non-safety-critical applications. The shutdown mode reduces power when the vehicle is off.
Recommended
Recommended Products Summary
Engineering reference data for AD7314ARMZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7314ARMZ-REEL7 | AD7314ARM | ADT7301ARMZ | ADM1032ARMZ | LM74CIM-3 |
|---|---|---|---|---|---|---|
| Package | 8-Lead MSOP | 8-Lead MSOP | 8-Lead MSOP | 8-Lead MSOP | 8-Lead MSOP | 8-Lead MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 13 bit | 8 bit (local), 11 bit (remote) | 12 bit |
| Accuracy | ±2°C | ±2°C | ±2°C | ±0.5°C | ±3°C (local), ±1°C (remote) | ±1.25°C (max) |
| Supply Voltage | 2.65V to 5.5V | 2.65V to 5.5V | 2.65V to 5.5V | 2.7V to 5.5V | 3.0V to 5.5V | 2.4V to 5.5V |
| Interface | SPI / MICROWIRE | SPI / MICROWIRE | SPI / MICROWIRE | SPI | SMBus | SPI |
| ID Pin | Yes | Yes | Yes | No | No | No |
| Shutdown Mode | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- ID pin for multi-sensor bus addressing (vs ADT7301ARMZ)
- Lower supply voltage range (vs ADM1032ARMZ)
- SPI/MICROWIRE interface (vs ADM1032ARMZ)
Design Notes
Place a 0.1µF decoupling capacitor as close as possible to the VDD pin (Pin 6) and GND (Pin 5) to filter high-frequency noise. For accurate temperature readings, ensure the sensor is not placed near heat-generating components on the PCB unless that is the intended measurement point. Use a solid ground plane to minimize thermal gradients.
The ID pin (Pin 7) has a 1 kΩ internal pull-down resistor. If not used, leave it floating or connect to GND. Do not drive it high, as this may cause excessive current draw. When using multiple sensors on the same bus, the ID pin can be used to differentiate devices, but ensure the bus capacitance is within limits.
For SPI communication, keep the serial clock (SCLK) and data lines (DIN/DOUT) short and avoid routing them near high-speed digital signals to prevent crosstalk. Use series resistors (e.g., 33Ω) on the clock and data lines if the traces are long. The maximum clock frequency is 5 MHz, so ensure the microcontroller's SPI peripheral is configured correctly.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
