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參數(shù)資料
| 型號： | MAX6691 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 熱敏電阻 |
| 英文描述： | Four-Channel Thermistor Temperature-to-Pulse- Width Converter |
| 中文描述： | 四通道、熱敏電阻溫度至脈寬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 151K |
| 代理商： | MAX6691 |
General Description
The MAX6691 four-channel thermistor temperature-to-
pulse-width converter measures the temperatures of up
to four thermistors and converts them to a series of out-
put pulses whose widths are related to the thermistors’
temperatures. Each of the four thermistors and an
external fixed resistor (R
EXT
) form a voltage-divider that
is driven by the MAX6691’s internal voltage reference
(V
REF
). V
REF
and the voltage across R
EXT
are mea-
sured and converted to a pulse.
The MAX6691 has a single open-drain I/O pin that can
be readily connected to a variety of microcontrollers.
The microcontroller initiates a conversion by pulling the
I/O pin low and releasing it. When conversion is done,
the MAX6691 signals the end of conversion by pulling
the I/O pin low once again. The pulse corresponding to
the first thermistor is sent immediately after the release
of the I/O pin.
The on-chip power-management circuitry reduces the
average thermistor current to minimize errors due to
thermistor self-heating. Between conversions, the
MAX6691 falls into a 10μA (max) sleep mode, where
the voltage reference is disabled and the supply cur-
rent is at its minimum.
The MAX6691 is available in a 10-pin μMAX package
and is specified from -55°C to +125°C temperature
range.
Applications
HVAC
Home Appliances
Medical Devices
Features
o
Simple Single-Wire Interface
o
Measures Up to Four Thermistor Temperatures
o
Low-Average Thermistor Current Minimizes Self-
Heating Errors
o
Internal Voltage Reference Isolates Thermistor
from Power-Supply Noise
o
Accommodates Any Thermistor Temperature
Range
M
Four-Channel Thermistor Temperature-to-Pulse-
Width Converter
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
1
2
3
4
5
10
9
8
7
6
V
CC
I/O
N.C.
GND
T4
T3
T2
T1
MAX6691
μ
MAX
TOP VIEW
R+
R-
Pin Configuration
1
2
3
4
5
10
9
8
7
6
V
CC
I/O
N.C.
GND
T4
T3
T2
T1
MAX6691
TOP VIEW
R+
R-
T4
T3
T2
T1
MICRO-
CONTROLLER
10k
V
CC
R
EXT
Typical Application Circuit
19-2304; Rev 0; 1/02
Ordering Information
PART
TEMP RANGE
-55
°
C to +125
°
C
PIN-PACKAGE
10 μMAX
MAX6691MUB
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6691MUB | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC - 多種 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 分辨率:8 bit 工作電源電壓:2.7 V to 5.5 V 功耗: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Reel |
| MAX6691MUB+ | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC - 多種 4Ch Thermistor Temp to-Pulse-Width RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 分辨率:8 bit 工作電源電壓:2.7 V to 5.5 V 功耗: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Reel |
| MAX6691MUB+T | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC - 多種 4Ch Thermistor Temp to-Pulse-Width RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 分辨率:8 bit 工作電源電壓:2.7 V to 5.5 V 功耗: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Reel |
| MAX6691MUB-T | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC - 多種 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 分辨率:8 bit 工作電源電壓:2.7 V to 5.5 V 功耗: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Reel |
| MAX6692EVKIT | 功能描述:板上安裝溫度傳感器 Evaluation System/Evaluation Kit for the MAX6648 MAX6649 MAX6692 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 |
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