ADT7408CCPZ-R2 AD [Analog Devices], ADT7408CCPZ-R2 Datasheet
ADT7408CCPZ-R2
Related parts for ADT7408CCPZ-R2
ADT7408CCPZ-R2 Summary of contents
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FEATURES 12-bit temperature-to-digital converter ±2°C accuracy Operation from −20°C to +125°C Operation from 3.6 V 240 μA typical average supply current Selectable 1.5°C, 3°C, 6°C hysteresis 2 SMBus-/I C®-compatible interface Dual-purpose event pin: comparator or interrupt 8-lead ...
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ADT7408 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 4 Timing Diagram ........................................................................... 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin ...
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SPECIFICATIONS All specifications T = −20°C to +125° Table 1. Parameter Symbol TEMPERATURE SENSOR AND ADC Local Sensor Accuracy (C Grade) ADC Resolution Temperature Resolution Temperature Conversion Time Long Term Drift EVENT# OUTPUT (OPEN DRAIN) Output Low Voltage, ...
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ADT7408 TIMING CHARACTERISTICS T = −20°C to +125° 3 3.6 V, unless otherwise noted Table 2. 1 Parameter SCL Clock Frequency Bus Free Time Between a Stop (P) and Start (S) Condition Hold Time ...
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ABSOLUTE MAXIMUM RATINGS Table 3. Parameter SDA Input Voltage SDA Output Voltage SCL Input Voltage EVENT# Output Voltage Operating Temperature Range Storage Temperature ...
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ADT7408 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description SMBus/I C Serial Bus Address Selection Pin. Logic input. Can be set SMBus/I C Serial Bus Address ...
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TYPICAL PERFORMANCE CHARACTERISTICS 0 3.3V DD 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –40 – TEMPERATURE (°C) Figure 5. Temperature Accuracy 450 400 CONVERTING 3.3V 350 300 250 200 150 100 50 0 ...
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ADT7408 THEORY OF OPERATION CIRCUIT INFORMATION The ADT7408 is a 12-bit digital temperature sensor presented in 13 bits, including the sign bit format (see the bit map in the Temperature Value Register (Read Only) section). Its output is twos complement ...
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SMBus/I C slave address selection pins allow up to eight such devices to co-exist on the same bus. This means that up to eight memory modules can be supported, given that each module has one slave device address slot. ...
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ADT7408 REGISTERS The ADT7408 contains 16 accessible registers, shown in Table 5. The address pointer register is the only register that is eight bits; the other registers are 16 bits wide. On power-up, the address pointer register is loaded with ...
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CONFIGURATION REGISTER (READ/WRITE) This 16-bit read/write register stores various configuration modes for the ADT7408, as shown in Table 8 and the following bit map. Note that RFU means reserved for future use. MSB D15 D14 D13 D12 D11 D10 RFU ...
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ADT7408 Bit Description D10:D9 Hysteresis enable 00: Disable hysteresis 01: Enable hysteresis at 1.5°C 10: Enable hysteresis at 3°C 11: Enable hysteresis at 6° BELOW WINDOW BIT ABOVE WINDOW BIT T H – HYST Figure 11. ...
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TEMPERATURE TRIP POINT REGISTERS There are three temperature trip point registers. They are the alarm temperature upper boundary trip register, the alarm temperature lower boundary trip register, and the critical temperature trip register. Alarm Temperature Upper Boundary Trip Register (Read/Write) ...
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ADT7408 Table 9. Temperature Register Trip Status Description Bit Definition D13 Below alarm window Below alarm window D13 Temperature Alarm Status 0 Temperature is equal to or above the alarm window lower boundary temperature. 1 Temperature is below the alarm ...
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TEMPERATURE DATA FORMAT The values used in the temperature register and three temperature trip point registers are in twos complement format. The temperature register has a 12-bit resolution with 256°C 12 range with 1 LSB = 0.0625°C (256°C/2 temperature data ...
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ADT7408 EVENT PIN FUNCTIONALITY Figure 12 shows the three differently defined outputs of EVENT# corresponding to the temperature change. EVENT# can be programmed to be one of the three output modes in the configuration register. If while in interrupt mode ...
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SERIAL INTERFACE Control of the ADT7408 is carried out via the SMBus-/I compatible serial interface. The ADT7408 is connected to this bus as a slave and is under the control of a master device. 2 Figure 13 shows a typical ...
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ADT7408 2 SMBUS/I C COMMUNICATIONS The data registers in the ADT7408 are selected by the pointer register. At power-up the pointer register is set to 0x00, the location for the capability register. The pointer register latches the last location to ...
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Reading Data From the ADT7408 Reading data from the ADT7408 can take place in one of the following two ways: Writing to the Pointer Register for a Subsequent Read To read data from a particular register, the pointer register must ...
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ADT7408 1 SCL SDA START BY MASTER SERIAL BUS ADDRESS BYTE 1 SCL (CONTINUED) SDA (CONTINUED) REPEAT START BY MASTER SERIAL BUS ADDRESS BYTE 1 SCL (CONTINUED) SDA (CONTINUED LEAST SIGNIFICANT ...
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APPLICATION INFORMATION THERMAL RESPONSE TIME The time required for a temperature sensor to settle to a specified accuracy is a function of the thermal mass of the sensor and the thermal conductivity between the sensor and the object being sensed. ...
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... ADT7408 OUTLINE DIMENSIONS PIN 1 INDICATOR 0.90 MAX 0.85 NOM SEATING PLANE ORDERING GUIDE Temperature Model Range 2 ADT7408CCPZ-R2 −20°C to +125°C 2 ADT7408CCPZ-REEL −20°C to +125°C 2 ADT7408CCPZ-REEL7 −20°C to +125°C 1 Temperature accuracy is over the +75°C to +95°C temperature range Pb-free part. 3.00 ...
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NOTES Rev Page ADT7408 ...
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ADT7408 NOTES 2 Purchase of licensed I C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I Rights to use these components system, ...