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參數(shù)資料
| 型號： | ADT7476ARQZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | ROHS COMPLIANT, MO-137AE, QSOP-24 |
| 文件頁數(shù)： | 10/72頁 |
| 文件大?。?/td> | 5219K |
| 代理商： | ADT7476ARQZ-REEL7 |
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ADT7476
Rev. B | Page 18 of 72
Table 6. Conversion Time with Averaging Disabled
Channel
Measurement Time (ms)
Voltage Channels
0.7
Remote Temperature 1
7
Remote Temperature 2
7
Local Temperature
1.3
When Bit 7 of Configuration Register 6 (0x10) is set, the default
round-robin cycle time increases to 240 ms.
Bypass All Voltage Input Attenuators
Setting Bit 5 of Configuration Register 2 (0x73) removes the
attenuation circuitry from the 2.5 V, VCCP, VCC, 5 V, and 12 V
inputs. This allows the user to directly connect external sensors
or rescale the analog voltage measurement inputs for other
applications. The input range of the ADC without the attenua-
tors is 0 V to 2.25 V.
Bypass Individual Voltage Input Attenuators
Bits [7:4] of Configuration Register 4 (0x7D) can be used to
bypass individual voltage channel attenuators.
Table 7. Bypassing Individual Voltage Input Attenuators
Using Configuration Register 4 (0x7D)
Bit
Channel Attenuated
4
Bypass 2.5 V attenuator
5
Bypass VCCP attenuator
6
Bypass 5 V attenuator
7
Bypass 12 V attenuator
Configuration Register 2 (0x73)
Bit 4 = 1, averaging off.
Bit 5 = 1, bypass input attenuators.
Bit 6 = 1, single-channel convert mode.
TACH1 Minimum High Byte Register (0x55)
Bits [7:5] select ADC channel for single-channel convert mode.
Single-Channel ADC Conversion
While single-channel mode is intended as a test mode that can
be used to increase sampling times for a specific channel,
therefore helping to analyze that channel’s performance in
greater detail, it can also have other applications.
Setting Bit 6 of Configuration Register 2 (0x73) places the
ADT7476 into single-channel ADC conversion mode. In this
mode, the ADT7476 can read a single voltage channel only. The
selected voltage input is read every 0.7 ms. The appropriate
ADC channel is selected by writing to Bits [7:5] of the TACH1
minimum high byte register (0x55).
Table 8. Programming Single-Channel ADC Mode
Register 0x55, Bits [7:5]
Channel Selected1
000
2.5 V
001
VCCP
010
VCC
011
5 V
100
12 V
101
Remote 1 temperature
110
Local temperature
111
Remote 2 temperature
1 In the process of configuring single-channel ADC conversion mode, the
TACH1 minimum high byte is also changed, possibly trading off TACH1
minimum high byte functionality with single-channel mode functionality.
.
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| ADT7481ARMZ-001 | 功能描述:板上安裝溫度傳感器 2 CH TEMP SNSR/ALARM 2 WIRE SMBUS INTRFCE RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
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