參數(shù)資料
型號(hào)： MAX1098CEAE+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 4/20頁(yè)
文件大?。?/td> 0K
描述： IC ADC 10BIT SERIAL 16-SSOP
標(biāo)準(zhǔn)包裝： 2,000
位數(shù)： 10
采樣率（每秒）： 900
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 16-SSOP
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 6 個(gè)差分，單極
MAX1098/MAX1099
10-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
12
______________________________________________________________________________________
Converter Operation
Figure 2 shows a simplified model of the converter
input structure. Once initiated, a voltage conversion
requires 64 fCLK periods, where fCLK is the internal
master clock. Each conversion is preceded by 13 fCLK
periods of warm-up time, performed in twelve 4 fCLK
period cycles, and followed by three fCLK periods to
load the output register. SSTRB falls at the beginning of
a conversion and rises at the end of a conversion.
Inputs IN+ and IN- charge capacitors CHOLDP and
CHOLDN, respectively, during the acquisition interval
that occurs during the first fCLK period of the first con-
version cycle. In the second fCLK period, the T/H
switches open so that charge is retained on CHOLDP
and CHOLDN as a sample of the differential voltage
between IN+ and IN-. This charge is transferred to the
ADC during the third and fourth fCLK periods.
The reference sampling process begins in the second
conversion cycle and continues until the conversion is
complete. Sampling occurs during the second and
fourth fCLK periods to yield an effective doubling of the
reference voltage. The reference sampling requirement
is signal dependent and may or may not occur in every
subsequent conversion cycle.
Temperature conversion is nothing more than subtract-
ing the results of two sequential voltage conversions. The
only difference is that output registers are not loaded at
the end of the first conversion. Thus, temperature con-
versions require 2 x 64 - 3 = 125 fCLK periods. Figures
3a and 3b show timing diagrams for voltage and tem-
perature conversions, respectively.
Track/Hold
The T/H stage for the MAX1098/MAX1099 is a simple
switched-capacitor sampling operation. The time
required for the T/H stage to acquire an input signal is
a function of how fast its input capacitance is charged.
If the signal source impedance is high, the acquisition
time lengthens and more time must be allowed
between conversions. The acquisition time (tACQ) is the
maximum time the device takes to acquire the signal.
Calculate this with the following equation:
tACQ = 7 (Rs + RIN) CIN
where Rs is the source impedance of the input signal,
RIN is the T/H input impedance (40k
), and CIN is the
TIMING/CONTROL
LOGIC
FULLY
DIFFERENTIAL
A/D
OUTPUT
GAIN
OF 2
IN+
IN-
REF
TRACK AND HOLD
CHOLDP
4pF
CHOLDN
4pF
CREF
4pF
RR
30k
RIN
40k
RIN
40k
T/H
Figure 2. Converter Input Structure
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1098-MAX1099 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:10-Bit Serial-Output Temperature Sensors with 5-Channel ADC
MAX1099 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:10-Bit Serial-Output Temperature Sensors with 5-Channel ADC
MAX1099AEAE 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
MAX1099AEAE+ 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
MAX1099AEAE+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
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