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AD7417:  10-Bit Digital Temperature Sensor (AD7416) and Four Single-Channel ADCs

Product Details


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 μs successive approximation converter, a 5-channel multiplexer, a temperature sensor, a clock oscillator, 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 multip-lexer 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 tempera-ture limits, and an open-drain overtemperature indicator (OTI) output is provided, which becomes active when a programmed 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.

An I2C® compatible serial interface allows the AD7416/AD7417/ AD7418 registers to be written to and read back. The three LSBs of the AD7416/AD7417 serial bus address can be selected, which allows up to eight AD7416/AD7417 devices to be connected to a single bus.

The AD7417 is available in a narrow body, 0.15 inch, 16-lead, small outline package (SOIC) and in a 16-lead, thin shrink, small outline package (TSSOP). The AD7416 and AD7418 are available in 8-lead SOIC and MSOP packages.

Product Highlights

  1. The AD7416/AD7417/AD7418 have an on-chip temperature sensor that allows an accurate measurement of the ambient temperature (±1°C @ 25°C, ±2°C overtemperature) to be made. The measurable temperature range is −40°C to +125°C. An overtemperature indicator is implemented by carrying out a digital comparison of the ADC code for Channel 0 (temperature sensor) with the contents of the on-chip TOTI setpoint register.
  2. The AD7417 offers a space-saving, 10-bit analog-to-digital solution with four external voltage input channels, an on-chip temperature sensor, an on-chip reference, and a clock oscillator.
  3. The automatic power-down feature enables the AD7416/ AD7417/AD7418 to achieve superior power performance. At slower throughput rates, the part can be programmed to operate in a low power shutdown mode, allowing further savings in power consumption.

Applications

  • Data acquisition with ambient temperature monitoring
  • Industrial process control
  • Automotive
  • Battery-charging applications
  • Personal computers

FEATURES and BENEFITS

  • 10-bit ADC with 15 μs and 30 μs conversion times
  • Single and 4 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
  • I2C-compatible serial interface
  • Selectable serial bus address allows connection of up to 8 AD7416/AD7417 devices to a single bus
  • AD7416 is a superior replacement for LM75

Functional Block Diagram for AD7417

Documentation

Title Content Type File Type
AD7416/AD7417/AD7418: 10-Bit Digital Temp Sensor (AD7416) and Four/Single-Channel ADCs Data Sheet  (Rev I, 11/2010) (pdf, 325 kB) Data Sheets PDF
AN-588: AD7416/AD7417/AD7418 Power-On Reset Circuit  (pdf, 29 kB)
If a large number of decoupling capacitors are used on the VDD line, re-applying power before VDD has discharged to 0 V can cause the AD7416/AD7417/AD7418 to reset into an unknown. state.
Application Notes PDF
ADT7301: Accurate, SPI-Compatible Temperature Sensor in SOT Package  (htm)
(analogZone September 1, 2003)
Product Reviews HTM
Selection Guide: Temperature Sensors  (pdf, 807 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

AD7417 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7417AR Status: Production 16 ld SOIC 16 Ind Tube, 48 $4.04 $3.44 N  Material Info PCN Purchase
AD7417AR-REEL Status: Production 16 ld SOIC 16 Ind Reel, 2500 - $3.44 N  Material Info PCN Purchase
AD7417ARU Status: Production 16 ld TSSOP 16 Ind Tube, 96 $3.85 $3.28 N  Material Info PCN Purchase
AD7417ARU-REEL Status: Production 16 ld TSSOP 16 Ind Reel, 2500 - $3.28 N  Material Info PCN Purchase
AD7417ARU-REEL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $3.28 N  Material Info PCN Purchase
AD7417ARUZ Status: Production 16 ld TSSOP 16 Ind Tube, 96 $3.51 $2.99 Y  Material Info PCN Purchase Sample
AD7417ARUZ-REEL Status: Production 16 ld TSSOP 16 Ind Reel, 2500 - $2.99 Y  Material Info PCN Purchase
AD7417ARUZ-REEL7 Status: Production 16 ld TSSOP 16 Ind Reel, 1000 - $2.99 Y  Material Info PCN Purchase
AD7417ARZ Status: Production 16 ld SOIC 16 Ind Tube, 48 $3.51 $2.99 Y  Material Info Notify Me Purchase
AD7417ARZ-REEL Status: Production 16 ld SOIC 16 Ind Reel, 2500 - $2.99 Y  Material Info PCN Purchase
AD7417ARZ-REEL7 Status: Production 16 ld SOIC 16 Ind Reel, 1000 - $2.99 Y  Material Info Notify Me Purchase
AD7417BR Status: Production 16 ld SOIC 16 Ind Tube, 48 $6.11 $5.13 N  Material Info PCN Purchase
AD7417BR-REEL Status: Last Time Buy 16 ld SOIC 16 Ind Reel, 2500 - $5.13 N  Material Info PCN/PDN Purchase
AD7417BR-REEL7 Status: Production 16 ld SOIC 16 Ind Reel, 1000 - $5.13 N  Material Info PCN Purchase
AD7417BRZ Status: Production 16 ld SOIC 16 Ind Tube, 48 $5.55 $4.67 Y  Material Info PCN Purchase Sample
AD7417BRZ-REEL Status: Production 16 ld SOIC 16 Ind Reel, 2500 - $4.67 Y  Material Info PCN Purchase
AD7417BRZ-REEL7 Status: Production 16 ld SOIC 16 Ind Reel, 1000 - $4.67 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD7417 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7416/7/8EBZ Status: Production Evaluation Board $151.80 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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