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參數(shù)資料
| 型號(hào)： | MAX6657-MAX6659 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 【1∑C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms |
| 中文描述： | 【1ΣC，SMBus兼容，遠(yuǎn)端/本地溫度傳感器與過溫報(bào)警 |
| 文件頁數(shù)： | 14/17頁 |
| 文件大小： | 275K |
| 代理商： | MAX6657-MAX6659 |
M
control can be used to reduce the supply current in
portable-equipment applications. The conversion rate
byte
’
s POR state is 08h (16Hz). The MAX6657/
MAX6658/MAX6659 use only the 4 least-significant bits
(LSBs) of this register. The 4 most-significant bits
(MSBs) are
“
don
’
t care
”
and should be set to zero when
possible. The conversion rate tolerance is ±25% at any
rate setting.
Valid A/D conversion results for both channels are
available one total conversion time (125ms nominal,
156ms maximum) after initiating a conversion, whether
conversion is initiated through the
RUN
/STOP bit, hard-
ware
STBY
pin, one-shot command, or initial power-up.
Slave Addresses
The MAX6657/MAX6658 have a fixed address of
1001100. The MAX6659 can be programmed to have
one of three different addresses, allowing up to three
devices to reside on the same bus without address
conflicts. Table 8 lists address information.
The address pin state is checked at POR only, and the
address data stays latched to reduce quiescent supply
current due to the bias current needed for high-Z state
detection.
The MAX6657/MAX6658/MAX6659 also respond to the
SMBus Alert Response slave address (see
Alert
Response Address
section).
POR and UVLO
The MAX6657/MAX6658/MAX6659 have a volatile
memory. To prevent unreliable power-supply conditions
from corrupting the data in memory and causing erratic
behavior, a POR voltage detector monitors V
CC
and
clears the memory if V
CC
falls below 1.7V (typ, see
Electrical Characteristics
). When power is first applied
and V
CC
rises above 2.0V (typ), the logic blocks begin
operating, although reads and writes at V
CC
levels
below 3.0V are not recommended. A second V
CC
com-
parator and the ADC undervoltage lockout (UVLO)
comparator prevent the ADC from converting until there
is sufficient headroom (V
CC
= +2.8V typ).
Power-Up Defaults
Power-up defaults include:
ADC begins autoconverting at a 16Hz rate (legacy
resolution).
THIGH and TLOW registers are set to default limits,
respectively.
Interrupt latch is cleared.
Address-select pin is sampled (MAX6659 only).
Command register is set to 00h to facilitate quick
internal Receive Byte queries.
Hysteresis is set to 10
°
C.
Transistor type is set to a substrate or common col-
lector PNP.
14
______________________________________________________________________________________
DATA
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah-FFh
CONVERSION RATE (Hz)
0.0625
0.125
0.25
0.5
1
2
4
8
16
16
Reserved
ADD CONNECTION
ADDRESS
GND
1001100
V
CC
Floating
1001110
1001101
Table 8. Slave Address Decoding for
MAX6659
Note:
Extended resolution applies only for conversion rates of
4Hz or slower.
Table 7. Conversion-Rate
Control Byte
BIT
NAME
ADD7
ADD6
ADD5
ADD4
ADD3
ADD2
ADD1
1
FUNCTION
7 (MSB)
6
5
4
3
2
1
0 (LSB)
Provide the current
MAX6659 slave address
that was latched at POR
(Table 8)
Logic 1
Table 9. Read Format for Alert Response
Address (000 1100)
±1°C, SMBus-Compatible Remote/Local Temperature
Sensors with Overtemperature Alarms
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6657MSA | 功能描述:板上安裝溫度傳感器 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 |
| MAX6657MSA+ | 功能描述:板上安裝溫度傳感器 Remote/Local Temperature Sensor 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 |
| MAX6657MSA+T | 功能描述:板上安裝溫度傳感器 Remote/Local Temperature Sensor 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 |
| MAX6657MSA-T | 功能描述:板上安裝溫度傳感器 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 |
| MAX6657MSA-TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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