Datasheet > ADN8834

ADN8834

更新时间： 2024-11-10 14:57:43

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
28页	2271K
描述
超紧凑1.5 A热电冷却器(TEC)控制器

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ADN8834 数据手册

Data Sheet

ADN8834

Ultracompact, 1.5 A Thermoelectric Cooler (TEC) Controller

FEATURES

FUNCTIONAL BLOCK DIAGRAM

► Patented high efficiency single inductor architecture

► Integrated low R_DSONMOSFETs 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

► Available in a 25-ball, 2.5 mm × 2.5 mm WLCSP or in a 24-lead,

4 mm × 4 mm LFCSP

Figure 1.

► AEC-Q100 qualified for automotive applications

APPLICATIONS

► TEC temperature control

► Optical modules

► Optical fiber amplifiers

► Optical networking systems

► Instruments requiring TEC temperature control

GENERAL DESCRIPTION

The ADN8834¹is a monolithic TEC controller with an integrated

TEC controller. It has a linear power stage, a pulse-width modula-

tion (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 differen-

tial (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 program-

med target temperature.

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 con-

trol loop.

Table 1. TEC Family Models

Device No.

MOSFET

Thermal Loop

Package

ADN8831

ADN8833

Discrete

Digital/analog

Digital

LFCSP (CP-32-7)

Integrated

WLCSP (CB-25-7),

LFCSP (CP-24-15)

The ADN8834 supports negative temperature coefficient (NTC)

thermistors as well as positive temperature coefficient (PTC) resis-

tive 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.

ADN8834

Integrated

Digital/analog

WLCSP (CB-25-7),

LFCSP (CP-24-15)

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

Product is covered by U.S. Patent No. 6,486,643.

Rev. C

Information furnished by Analog Devices is believed to be accurate and reliable "as is". 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.

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与ADN8834相关器件

型号	品牌	获取价格	描述	数据表
ADN8834ACPZ-R2	ADI	获取价格	Ultra compact 1.5 A Thermoelectric Cooler (TE
ADN8834ACPZ-R7	ADI	获取价格	Ultra compact 1.5 A Thermoelectric Cooler (TE
ADN8834MB-EVALZ	ADI	获取价格	Ultracompact, 3 A Thermoelectric Cooler (TEC) Controller
ADN8835	ADI	获取价格	Ultracompact 4A, 15V, Full Bridge Driver with SPI
ADN8835ACPZ-R7	ADI	获取价格	Ultracompact, 3 A Thermoelectric Cooler (TEC) Controller
ADN8835CP-EVALZ	ADI	获取价格	Ultracompact, 3 A Thermoelectric Cooler (TEC) Controller
ADN9001	ASI	获取价格	Diode,
ADN9001-00	ASI	获取价格	Mixer Diode, Low Barrier, X Band, Silicon, DIE-9
ADN9001-01	ASI	获取价格	Mixer Diode, Low Barrier, X Band, 2000ohm Z(V) Max, Silicon,
ADN9001-19	ASI	获取价格	Mixer Diode, Low Barrier, X Band, Silicon,

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