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參數(shù)資料
| 型號： | IRF7401 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Thermoelectric Cooler Controller |
| 中文描述： | 熱電冷卻器控制器 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 416K |
| 代理商： | IRF7401 |
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Tel: 781/329-4700 Fax: 781/326-8703
www.analog.comADN8830
Thermoelectric Cooler Controller
FEATURES
High Efficiency
Small Size: 5 mm 5 mm LFCSP
Low Noise: <0.5% TEC Current Ripple
Long-Term Temperature Stability: 0.01 C
Temperature Lock Indication
Temperature Monitoring Output
Oscillator Synchronization with an External Signal
Clock Phase Adjustment for Multiple Controllers
Programmable Switching Frequency up to 1 MHz
Thermistor Failure Alarm
Maximum TEC Voltage Programmability
APPLICATIONS
Thermoelectric Cooler (TEC) Temperature Control
Resistive Heating Element Control
Temperature Stabilization Substrate (TSS) Control
FUNCTIONAL BLOCK DIAGRAM
PID COMPENSATION
NETWORK
TEMPERATURE
MEASUREMENT
AMPLIFIER
PWM
CONTROLLER
FROM
THERMISTOR
TEMPERATURE
SET
INPUT
VOLTAGE
REFERENCE
V
REF
OSCILLATOR
FREQUENCY/PHASE
CONTROL
P-CHANNEL
(UPPER MOSFET)
N-CHANNEL
MOSFET
DRIVERS
P-CHANNEL
(LOWER MOSFET)
N-CHANNEL
GENERAL DESCRIPTION
The ADN8830 is a monolithic controller that drives a thermo-
electric cooler (TEC) to stabilize the temperature of a laser diode
or a passive component used in telecommunications equipment.
This device relies on a negative temperature coefficient (NTC)
thermistor to sense the temperature of the object attached to the
TEC. The target temperature is set with an analog input voltage
either from a DAC or an external resistor divider.
The loop is stabilized by a PID compensation amplifier with
high stability and low noise. The compensation network can be
adjusted by the user to optimize temperature settling time. The
component values for this network can be calculated based on
the thermal transfer function of the laser diode or obtained
from the lookup table given in the Application Notes section.
Voltage outputs are provided to monitor both the temperature of
the object and the voltage across the TEC. A voltage reference
of 2.5 V is also provided.
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