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參數(shù)資料
| 型號(hào)： | MAX6689UP34+ |
| 廠商： | Maxim Integrated |
| 文件頁(yè)數(shù)： | 6/19頁(yè) |
| 文件大?。?/td> | 240K |
| 描述： | IC 7CH PREC TEMP MONITOR 20TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 74 |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | -40°C ~ 125°C，外部傳感器 |
| 精確度： | ±1°C 本地（最大），±3°C 遠(yuǎn)程（最大） |
| 拓?fù)洌?/td> | ADC，緩沖器，寄存器庫(kù) |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
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Detailed Description
The MAX6689 is a precision multichannel temperature
monitor that features one local and six remote tempera-
ture-sensing channels with a programmable alert
threshold for each temperature channel and a program-
mable overtemperature threshold for channels 1, 4, 5,
and 6 (see Figure 1). Communication with the MAX6689
is achieved through the SMBus serial interface and a
dedicated alert pin. The alarm outputs, OVERT and
ALERT, assert if the software-programmed temperature
thresholds are exceeded. ALERT typically serves as an
interrupt, while OVERT can be connected to a fan, sys-
tem shutdown, or other thermal-management circuitry.
ADC Conversion Sequence
In the default conversion mode, the MAX6689 starts the
conversion sequence by measuring the temperature on
channel 1, followed by 2, 3, local channel, 4, 5, and 6.
The conversion result for each active channel is stored
in the corresponding temperature data register.
In some systems, one of the remote thermal diodes may
be monitoring a location that experiences temperature
changes that occur much more rapidly than in the other
channels. If faster temperature changes must be moni-
tored in one of the temperature channels, the MAX6689
allows channel 1 to be monitored at a faster rate than
the other channels. In this mode (set by writing a 1 to bit
4 of the configuration 1 register), measurements of
channel 1 alternate with measurements of the other
channels. The sequence becomes channel 1, channel
2, channel 1, channel 3, channel 1, etc. Note that the
time required to measure all seven channels is consid-
erably greater in this mode than in the default mode.
Low-Power Standby Mode
Enter software standby mode by setting the STOP bit to
1 in the configuration 1 register. Enter hardware standby
by pulling STBY low. Software standby mode disables
the ADC and reduces the supply current to approxi-
mately 30礎(chǔ). Hardware standby mode halts the ADC
clock, but the supply current is approximately 350礎(chǔ).
During either software or hardware standby, data is
retained in memory. During hardware standby, the
SMBus interface is inactive. During software standby, the
SMBus interface is active and listening for commands.
The timeout is enabled if a start condition is recognized
on SMBus. Activity on the SMBus causes the supply cur-
rent to increase. If a standby command is received while
a conversion is in progress, the conversion cycle is inter-
7-Channel Precision Temperature Monitor
6 _______________________________________________________________________________________
PIN
NAME
FUNCTION
9
DXP5
Combined Current Source and A/D Positive Input for Channel 5 Remote Diode. Connect to the anode
of a remote-diode-connected temperature-sensing transistor. Leave floating or connect to V
CC
if no
remote diode is used. Place a 2200pF capacitor between DXP5 and DXN5 for noise filtering.
10
DXN5
Cathode Input for Channel 5 Remote Diode. Connect the cathode of the channel 1 remote-diode-
connected transistor to DXN5.
11
DXN6
Cathode Input for Channel 6 Remote Diode. Connect the cathode of the channel 1 remote-diode-
connected transistor to DXN6.
12
DXP6
Combined Current Source and A/D Positive Input for Channel 6 Remote Diode. Connect to the anode
of a remote-diode-connected temperature-sensing transistor. Leave floating or connect to V
CC
if no
remote diode is used. Place a 2200pF capacitor between DXP6 and DXN6 for noise filtering.
13
STBY
Active-Low Standby Input. Drive STBY logic-low to place the MAX6689 in standby mode, or logic-high
for operate mode. Temperature and threshold data are retained in standby mode.
14
N.C.
No Connection. Must be connected to ground.
15
OVERT
Overtemperature Active-Low, Open-Drain Output. OVERT asserts low when the temperature of
channels 1, 4, 5, and 6 exceeds the programmed threshold limit.
16
V
CC
Supply Voltage Input. Bypass to GND with a 0.1礔 capacitor.
17
ALERT
SMBus Alert (Interrupt), Active-Low, Open-Drain Output. ALERT asserts low when the temperature of
any channel exceeds the programmed ALERT threshold.
18
SMBDATA SMBus Serial-Data Input/Output. Connect to a pullup resistor.
19
SMBCLK
SMBus Serial-Clock Input. Connect to a pullup resistor.
20
GND
Ground
Pin Description (continued)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX6690MEE+ | IC TEMP SENSOR SMBUS 16-QSOP |
| MAX6692YMSA+ | IC SENSOR REMOTE SMBUS 8SOIC |
| MAX6693UP9A+T | IC TEMP MONITOR 7CH 20-TSSOP |
| MAX6694TE9A+T | IC TEMP MONITOR 5CH 16TQFN |
| MAX6695YAUB+ | IC SENSOR TEMP SMBUS 10-UMAX |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6689UP34+ | 功能描述:板上安裝溫度傳感器 7Ch Precision Temperature Monitor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MAX6689UP34+T | 功能描述:板上安裝溫度傳感器 7Ch Precision Temperature Monitor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MAX6689UP34-T | 制造商:Maxim Integrated Products 功能描述:7-CHANNEL PRECISION TEMPERATURE MONITOR - Tape and Reel |
| MAX6689UP38 | 制造商:Maxim Integrated Products 功能描述:7-CHANNEL PRECISION TEMPERATURE MONITOR - Rail/Tube |
| MAX6689UP38-T | 制造商:Maxim Integrated Products 功能描述:7-CHANNEL PRECISION TEMPERATURE MONITOR - Tape and Reel |
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