The AD7417 and AD7418 are 10-bit, 4-channel and single-channel ADCs with an on-chip temperature sensor thatcan operate from a single 2.7 V to 5.5 V power supply. Thedevices contain a 15 s successive approximation converter, a5-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 conversionis initiated, the resulting ADC code at the end of the conversiongives a measurement of the ambient temperature (±1 @ 25).On-chip registers can be programmed with high and low tem-perature limits, and anopen-drain overtemperature indicator(OTI) output is provided, which becomes active when a pro-grammed limit isexceeded.
A configuration register allows programming of the sense of theOTI output (active high or active low) and itsoperating mode(comparator or interrupt). A programmable fault queue counterallows the number of out-of-limit measurements that must occurbefore triggering the OTI output to be set to prevent spurioustriggering of the OTI output in noisy environments.
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Data Acquisition with Ambient Temperature MonitoringIndustrial Process ControlAutomotiveBattery-Charging ApplicationsPersonal Computers
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10-Bit ADC with 15 s and 30 us Conversion TimesSingle and Four Single-Ended Analog Input ChannelsOn-Chip Temperature Sensor: 40 to +125On-Chip Track-and-HoldOvertemperature IndicatorAutomatic Power-Down at the End of a ConversionWide Operating Supply Range: 2.7 V to 5.5 VI2C®Compatible Serial InterfaceSelectable Serial Bus Address Allows Connection of upto Eight AD7416/AD7417s to a Single BusAD7416 Is a Superior Replacement for LM75
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(TA = 25°C, unless otherwise noted.)
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to +7 V
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
Analog Input Voltage to AGND
AIN1 to AIN4 . . . . . . . . . . . . . . . . . . . 0.3 V to VDD + 0.3 V
Reference Input Voltage to AGND2 . . 0.3 V to VDD + 0.3 V
Digital Input Voltage to DGND . . . . . 0.3 V to VDD + 0.3 V
Digital Output Voltage to DGND . . . . 0.3 V to VDD + 0.3 V
Operating Temperature Range
A Version . . . . . . . . . . . . . . . . . . . . . . . . . 40 to +125
B Version . . . . . . . . . . . . . . . . . . . . . . . . . . 40 to +85
Storage Temperature Range . . . . . . . . . . . 65 to +150
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150
TSSOP, Power Dissipation . . . . . . . . . . . . . . . . . . . . 450 mW
QJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 120/W
Lead Temperature, Soldering . . . . . . . . . . . . . . . . . . . . 260
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
16-Lead SOIC Package, Power Dissipation . . . . . . . . 450 mW
QJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 100/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
8-Lead SOIC P
Post a Buying Lead
Required Field 
