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參數(shù)資料
| 型號： | EVAL-AD7417EB |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 10-Bit Digital Temperature Sensor (AD7416) and Single/Four-Channel ADC (AD7417/AD7418) |
| 中文描述： | 10位數(shù)字溫度傳感器（I2C接口芯片AD7416）和單/四通道ADC（AD7417/AD7418） |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 325K |
| 代理商： | EVAL-AD7417EB |
REV. G
AD7416/AD7417/AD7418
10-Bit Digital Temperature Sensor (AD7416) and
Four Single-Channel ADCs (AD7417/AD7418)
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Tel: 781/329-4700 Fax: 781/326-8703
www.analog.comFEATURES
10-Bit ADC with 15 s and 30 s Conversion Times
Single and Four Single-Ended Analog Input Channels
On-Chip Temperature Sensor: –40 C to +125 C
On-Chip Track-and-Hold
Overtemperature Indicator
Automatic Power-Down at the End of a Conversion
Wide Operating Supply Range: 2.7 V to 5.5 V
I
2
C
Compatible Serial Interface
Selectable Serial Bus Address Allows Connection of up
to Eight AD7416/AD7417s to a Single Bus
AD7416 Is a Superior Replacement for LM75
APPLICATIONS
Data Acquisition with Ambient Temperature Monitoring
Industrial Process Control
Automotive
Battery-Charging Applications
Personal Computers
FUNCTIONAL BLOCK DIAGRAMS
V
DD
OTI
GND
SDA
SCL
FAULT
QUEUE
COUNTER
SETPOINT
COMPARATOR
T
OTI
SETPOINT
REGISTER
T
HYST
SETPOINT
TEMPERATURE
VALUE
REGISTER
A0
A1
A2
CONFIGURATION
REGISTER
SERIAL BUS
INTERFACE
BAND GAP
TEMPERATURE
SENSOR
10-BIT
ANALOG-DIGITAL
CONVERTER
ADDRESS
POINTER
REGISTER
AD7416
CONTROL
LOGIC
A > B
REF
IN
V
DD
OTI
SCL
SDA
A2
A1
A0
CONVST
A
IN1
A
IN2
A
IN3
A
IN4
+
TEMP
SENSOR
SAMPLING
CAPACITOR
V
BALANCE
CLOCK
A
B
REF
2.5V
CHARGE
DISTRIBUTION
DAC
I
2
C
INTERFACE
MUX
OVERTEMP REG
NC
NC GND
DATA OUT
NC = NO CONNECT
AD7417
CONTROL
LOGIC
A > B
V
DD
OTI
SCL
SDA
A
IN1
+
SAMPLING
CAPACITOR
V
BALANCE
CLOCK
A
B
I
2
C
INTERFACE
MUX
OVERTEMP REG
GND
DATA OUT
TEMP
SENSOR
REF
IN
CONVST
REF
2.5V
CHARGE
DISTRIBUTION
DAC
AD7418
GENERAL DESCRIPTION
The AD7417 and AD7418 are 10-bit, 4-channel and single-
channel ADCs with an on-chip temperature sensor that
can operate from a single 2.7 V to 5.5 V power supply. The
devices contain a 15
μ
s successive approximation converter, a
5-channel multiplexer, a temperature sensor, a clock oscilla-
tor, a track-and-hold, and a reference (2.5 V). The AD7416
is a temperature-monitoring only device in an 8-lead package.
The temperature sensor on the parts can be accessed via multi-
plexer Channel 0. When Channel 0 is selected and a conversion
is initiated, the resulting ADC code at the end of the conversion
gives a measurement of the ambient temperature (
±
1
°
C @ 25
°
C).
On-chip registers can be programmed with high and low tem-
perature limits, and an open-drain overtemperature indicator
(OTI) output is provided, which becomes active when a pro-
grammed limit is exceeded.
A configuration register allows programming of the sense of the
OTI output (active high or active low) and its operating mode
(comparator or interrupt). A programmable fault queue counter
allows the number of out-of-limit measurements that must occur
before triggering the OTI output to be set to prevent spurious
triggering of the OTI output in noisy environments.
(continued on page 7)
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相關(guān)代理商/技術(shù)參數(shù) |
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| EVAL-AD7418EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit Digital Temperature Sensor (AD7416) and Single/Four-Channel ADC (AD7417/AD7418) |
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| EVAL-AD7441CB | 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
| EVAL-AD7441CBZ | 制造商:Analog Devices 功能描述:PSEUDO DIFFERENTIAL INPUT, 1 MSPS, 10-/12-BIT ADCS IN AN 8-L - Bulk |
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