Overview
The AD22105ARZ-REEL, produced by Analog Devices Inc., is a low-voltage, resistor-programmable thermostatic switch. This solid-state device is designed to switch accurately at any temperature within its wide operating range of -40°C to +150°C. It requires only one external programming resistor to set the desired temperature threshold. The AD22105 is suitable for various applications, including battery-powered devices and industrial control systems, due to its low power consumption and single power supply voltage operation from +2.7 V to +7.0 V.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Temperature Accuracy (Ambient Setpoint) | ACC | ±0.5 | ±2.0 | °C | |
| Temperature Setpoint Accuracy | ACCT | -40°C ≤ TA ≤ +125°C | ±3.0 | °C | |
| Power Supply Rejection | PSR | 2.7 V1 < VS < 7.0 V | ±0.05 | ±0.15 | °C/V |
| Hysteresis | HYS | 4.1 | °C | ||
| Output Low Voltage | VOL | 250 | 400 | mV | |
| Supply Voltage Range | VS | 2.7 | 7.0 | V | |
| Supply Current (Output Low) | ISON | 120 | µA | ||
| Supply Current (Output High) | ISOFF | 90 | µA | ||
| Internal Pull-Up Resistor | RPULL-UP | 140 | 200 | 260 | kΩ |
| Turn-On Settling Time | tON | 5 | µs | ||
| Operating Temperature Range | -40 | +150 | °C |
Key Features
- Resistor-Programmable Setpoint: The AD22105 allows users to set the desired temperature threshold using a single external resistor.
- Low Voltage Operation: Operates on a single power supply voltage from +2.7 V to +7.0 V, making it suitable for battery-powered applications.
- Wide Operating Temperature Range: Functions accurately over a temperature range of -40°C to +150°C.
- Low Power Consumption: Minimizes self-heating errors and maximizes battery life with a low power dissipation of 230 µW @ 3.3 V.
- Internal Pull-Up Resistor: Includes an optional internal 200 kΩ pull-up resistor to facilitate driving light loads such as CMOS inputs.
- Hysteresis: Features approximately 4°C of hysteresis to prevent rapid thermal on/off cycling.
Applications
- Battery-Powered Devices: Suitable for use in devices where low power consumption is critical.
- Industrial Control Systems: Ideal for temperature monitoring and control in industrial environments.
- Automotive Systems: Can be used in automotive applications where temperature monitoring is essential.
- Medical Devices: Applicable in medical devices that require precise temperature control and monitoring.
Q & A
- What is the operating temperature range of the AD22105?
The AD22105 operates over a temperature range of -40°C to +150°C.
- What is the power supply voltage range for the AD22105?
The AD22105 operates on a single power supply voltage from +2.7 V to +7.0 V.
- How is the setpoint temperature programmed on the AD22105?
The setpoint temperature is programmed using a single external resistor.
- What is the hysteresis of the AD22105?
The AD22105 features approximately 4°C of hysteresis to prevent rapid thermal on/off cycling.
- Does the AD22105 include an internal pull-up resistor?
Yes, the AD22105 includes an optional internal 200 kΩ pull-up resistor.
- What is the typical supply current of the AD22105 when the output is low?
The typical supply current when the output is low (ISON) is 120 µA.
- What is the maximum output voltage of the AD22105?
The maximum output voltage (with RPULL-UP) is 11 V.
- Is the AD22105 RoHS compliant?
Yes, the AD22105 is RoHS compliant.
- What is the package type of the AD22105ARZ-REEL?
The AD22105ARZ-REEL comes in an 8-Lead Standard Small Outline Package (SOIC_N).
- What is the turn-on settling time of the AD22105?
The turn-on settling time (tON) is approximately 5 µs.
