參數(shù)資料
型號(hào)： MAX1447
廠(chǎng)商： Maxim Integrated Products, Inc.
元件分類(lèi)： 溫度/濕度傳感器
英文描述： 1C Remote and Local TEMPERATURE SENSOR with N-Factor and Series Resistance Correction 16-SSOP/QSOP -40 to 125
中文描述： 3位半和4位半、單片ADC，帶有LED驅(qū)動(dòng)器
文件頁(yè)數(shù)： 9/24頁(yè)
文件大?。?/td> 907K
代理商： MAX1447
M
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
_______________________________________________________________________________________
9
Pin Description
PIN
MAX1496
MAX1447/
MAX1498
NAME
FUNCTION
1
31
VNEG
-2.5V Charge-Pump Voltage Output. Connect a 0.1μF capacitor to GND.
2
32
REF-
Negative Reference Voltage Input. For internal-reference operation, connect REF- to GND.
For external-reference operation, bypass REF- to GND with a 0.1μF capacitor and set V
REF-
from -2.2V to +2.2V, provided V
REF+
> V
REF-
.
3
1
REF+
Positive Reference Voltage Input. For internal-reference operation, connect a 4.7μF
capacitor from REF+ to GND. For external-reference operation, bypass REF+ to GND with a
0.1μF capacitor and set V
REF+
from -2.2V to +2.2V, provided V
REF+
> V
REF-
.
4
2
AIN+
Positive Analog Input. Positive side of fully differential analog input. Bypass AIN+ to GND
with a 0.1μF or greater capacitor.
5
3
AIN-
Negative Analog Input. Negative side of fully differential analog input. Bypass AIN- to GND
with a 0.1μF or greater capacitor.
6
4
ISET
Segment Current Controller. Connect to ground through a resistor to set the segment
current. See Table 5 for current selection.
7
5
GND
Ground
8
—
V
DD
Analog and Digital Circuit Supply Voltage. Connect V
DD
to a +2.7V to +5.25V power supply.
Bypass V
DD
to GND with a 0.1μF capacitor and a 4.7μF capacitor.
9
8
INTREF
Internal-Reference Logic Input. Connect to GND to select external-reference mode. Connect
to DV
DD
for the MAX1447/MAX1498 and V
DD
for the MAX1496 to select the internal-
reference mode.
10
9
RANGE
Range Logic Input. RANGE controls the fully differential analog input range. Connect to
GND for the ±2V input range. Connect to DV
DD
(MAX1447/MAX1498) or V
DD
(MAX1496) for
the ±200mV input range.
11
10
DPSET1
Decimal-Point Logic-Input 1. Controls the decimal point of the LED. See the
Decimal-Point
Control
section.
12
11
DPSET2
Decimal-Point Logic-Input 2. Controls the decimal point of the LED. See the
Decimal-Point
Control
section.
13
12
PEAK
Peak Logic Input. Connect to DV
DD
(MAX1447/MAX1498) or V
DD
(MAX1496) to display the
highest ADC value on the LED. Connect to GND to disable the peak function.
14
13
HOLD
Hold Logic Input. Connect to DV
DD
(MAX1447/MAX1498) or V
DD
(MAX1496) to hold the
current ADC value on the LED. Connect to GND to update the LED at a rate of 2.5Hz and
disable the hold function. For the MAX1447, only placing the device into hold mode initiates
an offset mismatch calibration. Assert HOLD high for a minimum of 2s to ensure the
completion of offset mismatch calibration.
15
16
17
18
14
15
16
17
DIG0
DIG1
GLED
DIG2
Digit 0 Driver
Digit 1 Driver
Ground for LED Display Digit Driver
Digit 2 Driver
相關(guān)PDF資料
PDF描述
MAX1496EAI 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers
MAX1496EPI 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers
MAX1498ECJ 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers
MAX1447ECJ 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers
MAX1449 1C Remote and Local TEMPERATURE SENSOR with N-Factor and Series Resistance Correction 16-SSOP/QSOP -40 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1447ECJ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1447ECJ+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5-Digit 5sps ADC w/LED Drivers RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1447ECJ+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5-Digit 5sps ADC w/LED Drivers RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1447ECJ-T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1448EHJ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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