ADT7490ARQZ

更新时间： 2024-02-29 05:22:17

品牌	Logo	应用领域
亚德诺 - ADI		模拟IC 风扇信号电路光电二极管监控控制器
页数	文件大小	规格书
76页	1623K
描述
dBCool Remote Thermal Monitor and Fan Controller with PECI Interface

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技术参数
数据手册

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ADT7490ARQZ 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	SSOP	包装说明：	SSOP, SSOP24,.24
针数：	24	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.04	Is Samacsys：	N
模拟集成电路 - 其他类型：	ANALOG CIRCUIT	JESD-30 代码：	R-PDSO-G24
JESD-609代码：	e3	长度：	8.6614 mm
功能数量：	1	端子数量：	24
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装等效代码：	SSOP24,.24	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	1.7526 mm	子类别：	Motion Control Electronics
最大供电电流 (Isup)：	5 mA	最大供电电压 (Vsup)：	3.6 V
最小供电电压 (Vsup)：	3 V	标称供电电压 (Vsup)：	3.3 V
表面贴装：	YES	温度等级：	AUTOMOTIVE
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9116 mm	Base Number Matches：	1

ADT7490ARQZ 数据手册

ADT7490

Bit No. Mnemonic

R/W¹

Description

[5]

R1 THERM

Output Only

R/W

R1 = 1 enables THERM assertions when the Remote 1 temperature read is higher than the

Remote 1 THERM limit and the THERM pin is bidirectional. If THERM is configured as an output, the

THERM timer limit (Register 0x7A) should be set to 0xFF to avoid unwanted alerts from being

generated.

R1 = 0 indicates that the THERM pin is configured as a timer input only. Can also be disabled by

writing one of the following values to the Remote 1 THERM Temp Limit register (0x6A):

Writing −64°C in Offset 64 mode.

Writing −128°C in twos complement mode.

[6]

[7]

Local THERM

Output Only

R/W

R1 = 1 enables THERM assertions when the Local temperature read is higher than the Local

THERM limit and the THERM pin is bidirectional. If THERM is configured as an output, the THERM

timer limit (Register 0x7A) should be set to 0xFF to avoid unwanted alerts from being generated.

R1 = 0 indicates that the THERM pin is configured as a timer input only. Can also be disabled by

writing one of the below values to the Local THERM Limit register (0x6B):

Writing −64°C in Offset 64 mode.

Writing −128°C in twos complement mode.

R1 = 1 enables THERM assertions when the Remote 2 temperature read is higher than the

Remote 2 THERM limit and the THERMpin is bidirectional. If THERM is configured as an output

the THERM timer limit (Register 0x7A) should be set to 0xFF to avoid unwanted alerts from being

generated.

R2 THERM

Output Only

R1 = 0 indicates that the THERM pin is configured as a timer input only. C an also be disabled by

writing one of the below values to the Remote 2 THERM Temp Limit register (0x6C):

Writing −64°C in Offset 64 mode.

Writing −128°C in twos complement mode.

¹This register becomes read-only when the Configuration Register 1 (0x40) LOCK bit is set to 1. Any further attempts to write to this register have no effect.

Table 77. Register 0x7D—Configuration Register 4 (Power-On Default = 0x00)

Bit No.

Mnemonic R/W¹

Description

[1:0]

Pin 14 Func R/W

These bits set the functionality of Pin 14.

00 = TACH4 (default)

01 = THERM

10 = SMBALERT

11 = Reserved

[2]

THERM

Disable

R/W

THERM Disable = 0 enables THERM overtemperature output assuming THERM is correctly

configured (0x78, 0x7C, and 0x7D).

THERM Disable = 1 disables THERM overtemperature output on all channels.

THERM can also be disabled on any channel by:

Writing −64°C to the appropriate THERM temperature limit in Offset 64 mode.

Writing −128°C to the appropriate THERM temperature limit in twos complement mode.

Max/Full on THERM = 0 indicates that fans go to 100% when THERM temperature limit is exceeded.

[3]

Max/Full on R/W

THERM

Max/Full on THERM = 1 indicates that fans go to maximum speed (0x38, 0x39, 0x3A) when THERM

temperature limit is exceeded.

[4]

[5]

[6]

[7]

BpAtt

+2.5V_IN

BpAtt V_CCP

R/W

Bypass +2.5V_INattenuator. When set, the measurement scale for this channel changes from 0 V

(0x00) to 2.25 V (0xFF).

Bypass V_CCPattenuator. When set, the measurement scale for this channel changes from 0 V (0x00)

to 2.25 V (0xFF).

Bypass +5V_INattenuator. When set, the measurement scale for this channel changes from 0 V (0x00)

to 2.25 V (0xFF).

Bypass +12V_INattenuator. When set, the measurement scale for this channel changes from 0 V

(0x00) to 2.25 V (0xFF).

BpAtt +5V_INR/W

BpAtt

+12V_IN

R/W

¹This register becomes read-only when the Configuration Register 1 (0x40) LOCK bit is set to 1. Any further attempts to write to this register have no effect.

Rev. 0 | Page 70 of 76

1...67 68 697071 72 73...76

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