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DS1721S
+BOMSENSOR DIGITAL -55C-125C 8SOIC
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Nhà sản xuấtAnalog Devices Inc./Maxim tích hợp
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Ông. Phần #DS1721S
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Bảng dữ liệu DS1721S DataSheet
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Part Status | Active |
| Sensor Type | Digital, Local |
| Sensing Temperature - Local | -55°C ~ 125°C |
| Output Type | I2C |
| Voltage - Supply | 2.7V ~ 5.5V |
| Resolution | 11 b |
| Features | One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Standby Mode |
| Accuracy - Highest (Lowest) | ±1°C (±2°C) |
| Test Condition | -10°C ~ 85°C (-55°C ~ 125°C) |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | DS1721 |
Tổng quan
Description
Key features of the DS1721S include its ability to operate over a wide temperature range, typically from -55°C to +125°C, and its high resolution, often up to 0.5°C. The device is known for low power consumption, making it ideal for battery-powered applications. Its compact design enables integration into space-constrained devices.
The DS1721S also includes programmable thermostat settings, allowing the user to configure high and low-temperature alarms. This feature makes it useful in applications such as HVAC systems, refrigeration, and environmental monitoring systems. Overall, the DS1721S is valued for its precision, ease of use, and versatility in various temperature sensing applications.
Equivalent
1. LM75 from Texas Instruments
2. TMP102 from Texas Instruments
3. MCP9808 from Microchip Technology
4. STTS751 from STMicroelectronics
5. ADT7420 from Analog Devices
These sensors offer similar functionality with I2C interfaces and digital temperature measurement capabilities. When selecting equivalents, consider specifications like temperature range, accuracy, package type, and power consumption to ensure compatibility.
Features
1. Temperature Range: Measures temperatures from -55°C to +125°C with high accuracy.
2. Resolution: Provides 9-bit to 12-bit digital temperature readings, allowing for precision adjustments.
3. Interface: Utilizes an I²C-compatible interface for communication, making it easy to integrate with microcontrollers.
4. Power Supply: Operates over a wide voltage range from 2.7V to 5.5V, suitable for various applications.
5. Low Power Consumption: Ideal for battery-operated devices due to its low power usage.
6. Thermostat Functionality: Features programmable thermostat settings with user-defined temperature limits for control applications.
7. Non-Volatile Memory: Retains configuration settings even when powered down.
8. Small Form Factor: Available in a compact surface-mount package, facilitating ease of integration into PCB designs.
9. Applications: Commonly used in consumer electronics, industrial systems, and environmental monitoring due to its robustness and ease of use.
This combination of features makes the DS1721S suitable for a variety of temperature sensing applications.
Pinout
1. VDD: Power supply pin. Provides the voltage needed for the device operation.
2. GND: Ground pin. It serves as the return path for the power supply.
3. SDA: Serial Data Line. Used for bi-directional data transfer in I²C communication.
4. SCL: Serial Clock Line. Used to synchronize data transfer between the device and the controller in I²C communication.
5. A0: Address Input. Helps to set the I²C slave address to allow multiple devices on the same bus.
6. A1: Address Input. Works alongside A0 to configure the I²C slave address.
7. A2: Address Input. Further assists in setting the slave address for I²C communication.
8. OS: Output Signal. Can be used as an interrupt or thermostat output depending on the configuration.
The DS1721S uses these pins for precise temperature measurements and easy integration into digital systems using I²C protocols.