Overview
The ADN8834ACBZ-R7 is a highly integrated thermoelectric cooler (TEC) controller produced by Analog Devices Inc. This ultracompact device is designed to control the temperature of laser diodes or other components attached to a TEC module. It supports both negative temperature coefficient (NTC) thermistors and positive temperature coefficient (PTC) resistive temperature detectors (RTD). The ADN8834 features an autonomous analog temperature control loop stabilized by PID compensation, ensuring excellent long-term temperature stability.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Operating Temperature Range | - | - | -40 | - | 125 | °C |
| Package Type | - | - | - | - | 25-Ball WLCSP (2.54mm x 2.54mm) | - |
| N-MOSFET RDS_ON (WLCSP, VPVIN = 5.0 V) | RDS_NS(ON) | - | 40 | 60 | 80 | mΩ |
| N-MOSFET RDS_ON (WLCSP, VPVIN = 3.3 V) | RDS_NS(ON) | - | 45 | 65 | 85 | mΩ |
| Leakage Current (P-MOSFET) | ISW_P_LKG | - | 0.1 | - | 10 | µA |
| Leakage Current (N-MOSFET) | ISW_N_LKG | - | 0.1 | - | 10 | µA |
| Internal Oscillator Frequency | fOSC | EN/SY high | 1.85 | 2.0 | 2.15 | MHz |
| Current Sense Gain (VPVIN = 3.3 V) | RCS | - | 0.525 | - | - | V/A |
| Current Measurement Accuracy (700 mA ≤ ILDR ≤ 1.5 A, VPVIN = 3.3 V) | ILDR_ERROR | - | -10 | - | 10 | % |
Key Features
- Supports both NTC thermistors and PTC resistive temperature detectors (RTD)
- Autonomous analog temperature control loop with PID compensation for long-term temperature stability
- Internal 2.50 V reference voltage for accurate thermistor biasing and voltage divider network
- Zero drift chopper amplifiers for enhanced temperature stability
- Programmable maximum TEC current and voltage limits for both heating and cooling modes
- Compact 25-Ball WLCSP (2.54mm x 2.54mm) package
Applications
The ADN8834ACBZ-R7 is ideal for applications requiring precise temperature control, such as:
- Laser diode temperature control
- Optical communication systems
- Industrial and medical equipment
- Aerospace and defense systems
- High-reliability temperature control in various electronic devices
Q & A
- What is the operating temperature range of the ADN8834ACBZ-R7?
The operating temperature range is from -40°C to 125°C. - What types of temperature sensors does the ADN8834ACBZ-R7 support?
The device supports both NTC thermistors and PTC resistive temperature detectors (RTD). - What is the package type of the ADN8834ACBZ-R7?
The package type is a 25-Ball WLCSP (2.54mm x 2.54mm). - What is the maximum current handling capability of the ADN8834ACBZ-R7?
The device can handle up to 1.5 A of TEC current. - How is the temperature control loop stabilized in the ADN8834ACBZ-R7?
The temperature control loop is stabilized by PID compensation using built-in zero drift chopper amplifiers. - What is the internal oscillator frequency of the ADN8834ACBZ-R7?
The internal oscillator frequency is between 1.85 MHz and 2.15 MHz. - How accurate is the current measurement in the ADN8834ACBZ-R7?
The current measurement accuracy is within ±10% for currents between 700 mA and 1.5 A. - What is the purpose of the internal 2.50 V reference voltage in the ADN8834ACBZ-R7?
The internal 2.50 V reference voltage is used to bias the thermistor temperature sensing bridge and the voltage divider network. - Can the ADN8834ACBZ-R7 be used in high-reliability applications?
Yes, the device is suitable for high-reliability temperature control in various electronic devices. - Is the ADN8834ACBZ-R7 RoHS compliant?
Yes, the device is RoHS compliant.
