AD7416 Analog Devices, Inc., AD7416 Datasheet
AD7416
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AD7416 Summary of contents
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... 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 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 ...
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... AD7416/AD7417/AD7418 AD7417/AD7418–SPECIFICATIONS Parameter DC ACCURACY Resolution Minimum Resolution for Which No Missing Codes Are Guaranteed 2 Relative Accuracy 2 Differential Nonlinearity 2 Gain Error 2 Gain Error Match 2 Offset Error Offset Error Match ANALOG INPUTS Input Voltage Range 3 Input Leakage Current Input Capacitance 1 TEMPERATURE SENSOR Measurement Error Ambient Temperature 25° ...
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... V IN µ All Digital Inputs µ 400 pF OUT AD7416/AD7417/AD7418 µs See Figure 1 ns See Figure 1 ns See Figure 1 ns See Figure 1 ns See Figure 1 ns See Figure ...
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... AD7416/AD7417/AD7418 Pin No. Mnemonic Description 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 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 overtemperature register (OTR). ...
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... SCL 2 7 TOP VIEW OTI 3 6 (Not to Scale) GND 4 5 REV. G AD7416 PIN FUNCTION DESCRIPTION AD7418 PIN FUNCTION DESCRIPTION . The analog input channel is selected by writing to the REF pin should be tied to GND external reference is connected to the –5– ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7416/AD7417/AD7418 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... AD7416ARZ-REEL7* –40°C to +125°C AD7416ARM –40°C to +125°C AD7416ARM-REEL –40°C to +125°C AD7416ARM-REEL7 –40°C to +125°C AD7416ARMZ* –40°C to +125°C AD7416ARMZ-REEL* –40°C to +125°C AD7416ARMZ-REEL7* –40°C to +125°C AD7417ACHIPS AD7417AR –40°C to +125°C AD7417AR-REEL – ...
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... The AD7417 and AD7418 are single-channel and four-channel, 15 µs conversion time, 10-bit ADCs with on-chip temperature sensor, reference, and serial interface logic functions on a single chip. The AD7416 has no analog input channel and is intended for temperature measurement only. The ADC section consists of a conventional successive approximation converter based around a capacitor DAC ...
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... TRACK PHASE – SWITCH CLOSED Figure 3. Equivalent Analog Input Circuit ON-CHIP REFERENCE The AD7416/AD7417/AD7418 has an on-chip 1.2 V band gap reference that is gained switched capacitor amplifier to give an output of 2.5 V. The amplifier is only powered up at the REV. G start of the conversion phase and is powered down at the end of the conversion ...
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... INTERNAL REGISTER STRUCTURE The AD7417/AD7418 has seven internal registers, as shown in Figure 6. Six of these are data registers and one is an Address Pointer Register. The AD7416 has five internal registers (the ADC and Config2 Registers are not applicable to the AD7416). TEMPERATURE VALUE REGISTER ...
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... AD7418. Bits control the channel selection as outlined in Table VI. These bits should always for the AD7416. Bits D4 and D3 are used to set the length of the fault queue. D2 sets the sense of the OTI output. D1 selects the comparator or interrupt mode of operation, and selects the shutdown mode (Default ...
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... WRITING TO THE AD7416/AD7417/AD7418 Depending on the register being written to, there are three different writes for the AD7416/AD7417/AD7418. 1. Writing to the Address Pointer Register for a subsequent read. In order to read data from a particular register, the Address Pointer Register must contain the address of that register. If ...
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... MASTER SERIAL BUS ADDRESS BYTE Figure 12. Reading Two Bytes of Data from the T REV. G READING DATA FROM THE AD7416/AD7417/AD7418 Reading data from the AD7416/AD7417/AD7418 is a one or two byte operation. Reading back the contents of the Configura Register. HYST tion Register is a single byte read operation, as shown in Figure ...
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... HYST temperature remains, or subsequently falls again, below T OTI is also reset when the AD7416/AD7417/AD7418 is placed in shutdown mode by setting Bit D0 of the Configuration Regis- ter to 1. The OTI output requires an external pull-up resistor. This can be connected to a voltage different from V allow interfacing between 5 V and 3 ...
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... Water resistant varnishes and conformal coatings can be used for protection. The small size of the AD7416 package allows mounted inside sealed metal probes that provide a safe environment for the device. ...
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... CURRENT Figure 15. AD7416 Used as a Thermostat SYSTEM WITH MULTIPLE AD7416S The three LSBs of the AD7416’s serial address can be set by the user, allowing eight different addresses from 1001000 to 1001111. Figure 16 shows a system in which eight AD7416s are connected to a single serial bus, with their OTI outputs wire-ANDed together to form a common interrupt line ...
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... REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 8-Lead Mini Small Outline Package [MSOP] 3.00 BSC PIN 1 0.15 0.00 0.75 8 0.60 0 COPLANARITY 0. Standard Specification as defined by Philips. –17– AD7416/AD7417/AD7418 Narrow Body (R-8) Dimensions shown in millimeters and (inches) 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 5.80 (0.2284 0.50 (0.0196) 1.27 (0.0500) 1.75 (0.0688) BSC ...
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... AD7416/AD7417/AD7418 Revision History Location 8/04—Data Sheet Changed from REV REV. G. Changes to Figure Changes to READING DATA FROM THE AD7416/AD7417/AD7418 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Changes to POWER-ON-RESET section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7/03–Data Sheet Changed from REV REV. F. Updated FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Updated SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Updated ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Updated ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Updated PRODUCT HIGHLIGHTS ...
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