- 您现在的位置：买卖IC网 > PDF目录16848 > ADN8831ACPZ-REEL7 (Analog Devices Inc)IC THERMO COOLER CTRLR 32LFCSP PDF资料下载
参数资料
| 型号： | ADN8831ACPZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC THERMO COOLER CTRLR 32LFCSP |
| 产品变化通告： | ADN8831 Product Redesign & Datasheet Change |
| 标准包装： | 1 |
| 应用： | 热电冷却器 |
| 电流 - 电源： | 8mA |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ |
| 包装： | 标准包装 |
| 产品目录页面： | 789 (CN2011-ZH PDF) |
| 配用： | ADN8831-EVALZ-ND - BOARD EVAL FOR ADN8831 |
| 其它名称： | ADN8831ACPZ-REEL7DKR |
Data Sheet
APPLICATIONS INFORMATION
ADN8831
THERMISTOR INPUT
PID COMPENSATOR
MOSFET DRIVER
AMPLIFIER
A V = R FB /(R TH + R X ) – R FB /R
AMPLIFIER
A V = Z 2 /Z 1
A V = 5
SFB
SPGATE
PWM
SNGATE
LPF
IN1P
IN1N
Chop1
OUT1
IN2P
IN2N
Chop2
OUT2
CONTROL
LPGATE
TEC
LINEAR
LNGATE
LFB
V REF
2
3
4
5
6
7
17.68k?
R
V REF /2
V TEMPSET
7.68k?
R X
R FB
Z 1
Z 2
V OUT1
V OUT2
R TH
(10k? @ 25°C)
Figure 17. Signal Flow Block Diagram
? ? ? 1 1 ? ? ? ?
R TH = R R exp ? B ? ?
?? ? T T R ? ? ??
SIGNAL FLOW
The ADN8831 integrates two auto-zero amplifiers defined
as the Chop1 amplifier and the Chop2 amplifier. Both of the
amplifiers can be used as standalone amplifiers, therefore, the
shows the signal flow through the ADN8831 , and a typical
implementation of the temperature control loop using the Chop1
amplifier and the Chop2 amplifier.
In Figure 17, the Chop1 amplifier and the Chop2 amplifier are
T LOW and T HIGH are the endpoints of the temperature range and
T MID is the average. In some cases, with only B constant available ,
R TH is calculated using the following equation:
? ?
where:
R TH is a resistance at T [K].
R R is a resistance at T R [K].
R X = ? ? LOW MID
?
?
configured as the thermistor input amplifier and the PID
compensation amplifier, respectively. The thermistor input
amplifier gains the thermistor voltage then outputs to the PID
compensation amplifier. The PID compensation amplifier then
R X is calculated using the following equation:
? R R + R MID R HIGH ? 2 R LOW R HIGH
? R LOW + R HIGH ? 2 R MID
?
?
R FB
R FB
V OUT1 = ? ?
? + 1 ? ? × REF
compensates a loop response over the frequency domain.
The output from the compensation loop at OUT2 is fed to the
linear MOSFET gate driver. The voltage at LFB is fed with OUT2
into the PWM MOSFET gate driver. Including the external
transistors, the gain of the differential output section is fixed at 5.
Amplifier section.
THERMISTOR SETUP
The thermistor has a nonlinear relationship to temperature; near
optimal linearity over a specified temperature range can be
achieved with the proper value of R X placed in series with the
thermistor. First, the resistance of the thermistor must be
known, where
R LOW = R TH @ T LOW
R MID = R TH @ T MID
R HIGH = R TH @ T HIGH
THERMISTOR AMPLIFIER (Chop1)
The Chop1 amplifier can be used as a thermistor input amplifier.
In Figure 17, the output voltage is a function of the thermistor
temperature. The voltage at OUT1 is expressed as
? ? V
? R TH + R X R ? 2
where:
R TH is a thermistor.
R X is a compensation resistor.
R is calculated using the following equation:
R = R X + R TH @ 25 ° C
V OUT1 is centered around V REF /2 at 25°C. With the typical
values shown in Figure 17, an average temperature-to-voltage
coefficient is ?25 mV/°C at a range of +5°C to +45°C.
Rev. A | Page 15 of 20
相关PDF资料 |
PDF描述 |
|---|---|
| AD9524/PCBZ | BOARD EVAL FOR AD9524 |
| V150C12E150BF | CONVERTER MOD DC/DC 12V 150W |
| 0982660986 | CBL 27PS 0.5MM JMPR TYPE D 1.18" |
| H6MMH-3006G | DIP CABLE - HDM30H/AE30G/HDM30H |
| TCMD-25-T-02.00-01-N | CABLE ASSEM 2MM 50POS M-F 2" |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADN8831-EVALZ | 功能描述:BOARD EVAL FOR ADN8831 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| ADN8831XCP | 制造商:Analog Devices 功能描述:- Bulk |
| ADN8833ACBZ-R7 | 功能描述:IC THERMO COOLER DRIVER 25WLCSP 制造商:analog devices inc. 系列:* 零件状态:在售 标准包装:1 |
| ADN8833ACPZ-R2 | 功能描述:IC THERMO COOLER DRIVER 24LFCSP 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 应用:热电冷却器 电流 - 电源:2.1mA 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-WFQFN 裸露焊盘，CSP 供应商器件封装:24-LFCSP-WQ（4x4） 标准包装:1 |
| ADN8833ACPZ-R7 | 功能描述:IC THERMO COOLER DRIVER 24LFCSP 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 应用:热电冷却器 电流 - 电源:2.1mA 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-WFQFN 裸露焊盘，CSP 供应商器件封装:24-LFCSP-WQ（4x4） 标准包装:1 |
发布紧急采购，3分钟左右您将得到回复。