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ADN8834ACPZ-R7

更新时间： 2024-11-24 19:42:11
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亚德诺 - ADI /
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28页 1258K
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Ultra compact 1.5 A Thermoelectric Cooler (TEC) Controller 

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ADN8834ACPZ-R7 数据手册

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Ultracompact, 1.5 A Thermoelectric Cooler  
(TEC) Controller  
Data Sheet  
ADN8834  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
VLIM/  
Patented high efficiency single inductor architecture  
Integrated low RDSON MOSFETs for the TEC controller  
TEC voltage and current operation monitoring  
No external sense resistor required  
Independent TEC heating and cooling current limit settings  
Programmable maximum TEC voltage  
2.0 MHz PWM driver switching frequency  
External synchronization  
Two integrated, zero drift, rail-to-rail chopper amplifiers  
Capable of NTC or RTD thermal sensors  
2.50 V reference output with 1% accuracy  
Temperature lock indicator  
VDD  
SD ILIM VTEC ITEC  
PVIN  
ERROR  
AMP  
TEC DRIVER  
IN1P  
IN1N  
TEC CURRENT  
AND VOLTAGE  
SENSE AND LIMIT  
LDR  
LINEAR  
POWER  
STAGE  
OUT1  
COMP  
AMP  
IN2P  
IN2N  
CONTROLLER  
SW  
PWM  
POWER  
STAGE  
SFB  
OUT2  
Available in a 25-ball, 2.5 mm × 2.5 mm WLCSP or in a  
24-lead, 4 mm × 4 mm LFCSP  
VOLTAGE  
REFERENCE  
OSCILLATOR  
APPLICATIONS  
TEC temperature control  
AGND  
VREF  
EN/SY  
PGNDx  
Optical modules  
Optical fiber amplifiers  
Figure 1.  
Optical networking systems  
Instruments requiring TEC temperature control  
GENERAL DESCRIPTION  
The ADN8834 is a monolithic TEC controller with an integrated  
TEC controller. It has a linear power stage, a pulse-width  
modulation (PWM) power stage, and two zero-drift, rail-to-rail  
operational amplifiers. The linear controller works with the PWM  
driver to control the internal power MOSFETs in an H-bridge  
configuration. By measuring the thermal sensor feedback  
voltage and using the integrated operational amplifiers as a  
proportional integral differential (PID) compensator to condition  
the signal, the ADN8834 drives current through a TEC to settle  
the temperature of a laser diode or a passive component attached  
to the TEC module to the programmed target temperature.  
The temperature control loop of the ADN8834 is stabilized by  
PID compensation utilizing the built in, zero drift chopper  
amplifiers. The internal 2.50 V reference voltage provides a 1%  
accurate output that is used to bias a thermistor temperature  
sensing bridge as well as a voltage divider network to program  
the maximum TEC current and voltage limits for both the heating  
and cooling modes. With the zero drift chopper amplifiers,  
extremely good long-term temperature stability is maintained via  
an autonomous analog temperature control loop.  
Table 1. TEC Family Models  
Device No. MOSFET  
Thermal Loop  
Package  
The ADN8834 supports negative temperature coefficient (NTC)  
thermistors as well as positive temperature coefficient (PTC)  
resistive temperature detectors (RTD). The target temperature is  
set as an analog voltage input either from a digital-to-analog  
converter (DAC) or from an external resistor divider.  
ADN8831  
ADN8833  
Discrete  
Integrated Digital  
Digital/analog  
LFCSP (CP-32-7)  
WLCSP (CB-25-7),  
LFCSP (CP-24-15)  
ADN8834  
Integrated Digital/analog  
WLCSP (CB-25-7),  
LFCSP (CP-24-15)  
Rev. A  
Document Feedback  
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. Specifications subject to change without notice. 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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Technical Support  
©2015 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
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ADN8834ACPZ-R7 替代型号

型号 品牌 替代类型 描述 数据表
ADN8834ACPZ-R2 ADI

完全替代

 Ultra compact 1.5 A Thermoelectric Cooler (TE

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