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AD7417ARUZ-REEL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
AD7416/AD7417/AD7418
Rev. I | Page 7 of 24
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C, unless otherwise noted.
Table 3.
Parameter Rating
V
DD
to AGND −0.3 V to +7 V
V
DD
to DGND −0.3 V to +7 V
Analog Input Voltage to AGND
A
IN1
to A
IN4
−0.3 V to V
DD
+ 0.3 V
Reference Input Voltage to AGND
1
−0.3 V to V
DD
+ 0.3 V
Digital Input Voltage to DGND −0.3 V to V
DD
+ 0.3 V
Digital Output Voltage to DGND −0.3 V to V
DD
+ 0.3 V
Operating Temperature Range
A Version −40°C to +125°C
B Version −40°C to +85°C
Storage Temperature Range −65°C to +150°C
Junction Temperature 150°C
TSSOP, Power Dissipation 450 mW
θ
JA
Thermal Impedance 120°C/W
Lead Temperature, Soldering 260°C
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
16-Lead SOIC Package, Power Dissipation 450 mW
θ
JA
Thermal Impedance 100°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
8-Lead SOIC Package, Power Dissipation 450 mW
θ
JA
Thermal Impedance 157°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
MSOP Package, Power Dissipation 450 mW
θ
JA
Thermal Impedance 206°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
1
If the reference input voltage is likely to exceed V
DD
by more than 0.3 V (for
example, during power-up) and the reference is capable of supplying 30 mA
or more, it is recommended to use a clamping diode between the REF
IN
pin
and the V
DD
pin. Figure 5 shows how the diode should be connected.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
REF
IN
BAT81
AD7417
V
DD
01126-025
Figure 5. Diode Connection
ESD CAUTION
AD7416/AD7417/AD7418
Rev. I | Page 8 of 24
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
NC
1
SDA
2
SCL
3
OTI
4
NC
16
CONVST
15
V
DD
14
A0
13
REF
IN
5
A1
12
GND
6
A2
11
A
IN1
7
A
IN4
10
A
IN2
8
A
IN3
9
NC = NO CONNECT
AD7417
TOP VIEW
(Not to Scale)
01126-005
Figure 6. AD7417 Pin Configuration (SOIC/TSSOP)
Table 4. AD7417 Pin Function Descriptions
Pin No. Mnemonic Description
1, 16 NC No Connection. Do not connect anything to this pin.
2 SDA Digital I/O. Serial bus bidirectional data. Push-pull output.
3 SCL Digital Input. Serial bus clock.
4 OTI
This pin is a logic output. The overtemperature indicator (OTI) is set if the result of a conversion on Channel 0
(temperature sensor) is greater than an 8-bit word in the T
OTI
setpoint register. The signal is reset at the end of a
serial read operation. Open-drain output.
5 REF
IN
Reference Input. An external 2.5 V reference can be connected to the AD7417 at this pin. To enable the on-chip
reference, the REF
IN
pin should be tied to GND. If an external reference is connected to the AD7417, the internal
reference shuts down.
6 GND Ground reference for track-and-hold, comparator and capacitor DAC, and digital circuitry.
7 to 10 A
IN1
to A
IN4
Analog Input Channels. The AD7417 has four analog input channels. The input channels are single-ended with
respect to GND. The input channels can convert voltage signals in the range of 0 V to VREF. A channel is selected by
writing to the configuration register of the AD7417.
11 A2 Digital Input. This is the highest programmable bit of the serial bus address.
12 A1 Digital Input. This is the middle programmable bit of the serial bus address.
13 A0 Digital Input. This is the lowest programmable bit of the serial bus address.
14 V
DD
Positive Supply Voltage, 2.7 V to 5.5 V.
15
CONVST
Logic Input Signal. Convert start signal. The rising edge of this signal fully powers up the part. The power-up time
for the part is 4 s. If the CONVST pulse is greater than 4 s, the falling edge of CONVST places the track-and-hold
mode into hold mode and initiates a conversion. If the pulse is less than 4 s, an internal timer ensures that the
track-and-hold does not go into hold, and conversion is not initiated until the power-up time has elapsed. The
track-and-hold goes into track mode again at the end of conversion (see the section). Operating Modes
AD7416/AD7417/AD7418
Rev. I | Page 9 of 24
SDA
1
SCL
2
OTI
3
GND
4
V
DD
8
A0
7
A1
6
A2
5
AD7416
TOP VIEW
(Not to Scale)
0
1126-006
SDA
1
SCL
2
OTI
3
GND
4
CONVST
8
V
DD
7
REF
IN
6
A
IN
5
AD7418
TOP VIEW
(Not to Scale)
01126-007
Figure 7. AD7416 Pin Configuration (SOIC/MSOP) Figure 8. AD7418 Pin Configuration (SOIC/MSOP)
Table 5. AD7416 Pin Function Descriptions
Pin No. Mnemonic Description
1 SDA Digital I/O. Serial bus bidirectional data. Push-pull output.
2 SCL Digital Input. Serial bus clock.
3 OTI
This pin is a logic output. The OTI is set if the result of a conversion on Channel 0 (temperature sensor) is greater
than an 8-bit word in the T
OTI
setpoint register. The signal is reset at the end of a serial read operation. Open-drain
output.
4 GND Ground reference for track-and-hold, comparator and capacitor DAC, and digital circuitry.
5 A2 Digital Input. This is the highest programmable bit of the serial bus address.
6 A1 Digital Input. This is the middle programmable bit of the serial bus address.
7 A0 Digital Input. This is the lowest programmable bit of the serial bus address.
8 V
DD
Positive Supply Voltage, 2.7 V to 5.5 V.
Table 6. AD7418 Pin Function Descriptions
Pin No. Mnemonic Description
1 SDA Digital I/O. Serial bus bidirectional data. Push-pull output.
2 SCL Digital Input. Serial bus clock.
3 OTI
This is a logic output. The OTI is set if the result of a conversion on Channel 0 (temperature sensor) is greater than
an 8-bit word in the T
OTI
setpoint register. The signal is reset at the end of a serial read operation. Open-drain
output.
4 GND Ground reference for track-and-hold, comparator and capacitor DAC, and digital circuitry.
5 A
IN
Analog Input Channel. The input channel is single-ended with respect to GND. The input channel can convert
voltage signals in the range of 0 V to VREF. The analog input channel is selected by writing to the configuration
register of the AD7418 and choosing Channel 4.
6 REF
IN
Reference Input. An external 2.5 V reference can be connected to the AD7418 at this pin. To enable the on-chip
reference, the REF
IN
pin should be tied to GND. If an external reference is connected to the AD7418, the internal
reference shuts down.
7 V
DD
Positive Supply Voltage, 2.7 V to 5.5 V.
8
CONVST
Logic Input Signal. Convert start signal. The rising edge of this signal fully powers up the part. The power-up time
for the part is 4 s. If the
CONVST
pulse is greater than 4 s, the falling edge of
CONVST
places the track-and-hold
mode into hold mode and initiates a conversion. If the pulse is less than 4 s, an internal timer ensures that the
track-and-hold does not go into hold, and conversion is not initiated until the power-up time has elapsed. The
track-and-hold goes into track mode again at the end of conversion (see the section). Operating Modes
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

AD7417ARUZ-REEL

Mfr. #:
Buy AD7417ARUZ-REEL
Manufacturer:
Analog Devices Inc.
Description:
Board Mount Temperature Sensors 4CH I2C W/ ON-CHIP TEMP SENSOR IC
Lifecycle:
New from this manufacturer.
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