ADT7317ARQ-REEL Analog Devices Inc, ADT7317ARQ-REEL Datasheet
ADT7317ARQ-REEL
Specifications of ADT7317ARQ-REEL
Related parts for ADT7317ARQ-REEL
ADT7317ARQ-REEL Summary of contents
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FEATURES ADT7316—four 12-bit DACs ADT7317—four 10-bit DACs ADT7318—four 8-bit DACs Buffered voltage output Guaranteed monotonic by design over all codes 10-bit temperature-to-digital converter Temperature range: −40°C to +120°C Temperature sensor accuracy of ±0.5°C Supply range: 2 5.5 V ...
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ADT7316/ADT7317/ADT7318 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configuration............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Functional Block Diagram .............................................................. 8 DAC AC Characteristics.................................................................. 9 Absolute Maximum Ratings.......................................................... 10 ESD Caution................................................................................ 10 Pin Configuration ...
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SPECIFICATIONS Temperature ranges for A version: –40°C to +120°C. V Table 1. Parameter 1 Min DAC DC PERFORMANCE ADT7318 Resolution Relative Accuracy Differential Nonlinearity ADT7317 Resolution Relative Accuracy Differential Nonlinearity ADT7316 Resolution Relative Accuracy Differential Nonlinearity Offset ...
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ADT7316/ADT7317/ADT7318 1 Parameter Min CONVERSION TIMES Slow ADC V DD Internal Temperature External Temperature Fast ADC V DD Internal Temperature External Temperature 4 ROUND ROBIN UPDATE RATE Slow ADC at 25°C Fast ADC at 25°C 5 DAC EXTERNAL REFERENCE INPUT ...
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Parameter Min DIGITAL OUTPUT Output High Voltage, V 2.4 OH Output Low Voltage Output High Current Output Capacitance, C OUT INT/INT Output Saturation Voltage TIMING CHARACTERISTICS Serial Clock Period, t ...
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ADT7316/ADT7317/ADT7318 DATA IN DATA OUT OUTPUT VOLTAGE NEGATIVE DAC CODE OFFSET ERROR ACTUAL IDEAL LOWER DEAD BAND CODES AMPLIFIER FOOTROOM NEGATIVE OFFSET ERROR Figure 2. DAC Transfer Function with Negative Offset OUTPUT VOLTAGE POSITIVE OFFSET ERROR DAC CODE Figure 3. ...
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TO OUTPUT Figure 5. Load Circuit for Access Time and Bus Relinquish Time Figure 6. Load Circuit for DAC Outputs SCLK t 3 DIN DOUT ...
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ADT7316/ADT7317/ADT7318 FUNCTIONAL BLOCK DIAGRAM ON-CHIP INTERNAL TEMPERATURE TEMPERATURE VALUE REGISTER SENSOR A-TO-D DD ANALOG VALUE CONVERTER MUX D– 8 REGISTER V EXTERNAL TEMPERATURE DD SENSOR VALUE REGISTER ADT7316/ ADT7317/ ADT7318 GND DD ADDRESS POINTER ...
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DAC AC CHARACTERISTICS Guaranteed by design and characterization, but not production tested 200 pF to GND; 4.7 kΩ All specifications Table 2. 1 Parameter Output Voltage Settling Time ADT7318 ADT7317 ADT7316 ...
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ADT7316/ADT7317/ADT7318 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter V to GND DD Digital Input Voltage to GND Digital Output Voltage to GND Reference Input Voltage to GND Operating Temperature Range Storage Temperature Range Junction Temperature 16-Lead QSOP 1 Power Dissipation 2 ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description Buffered Analog Output Voltage from DAC B. The output amplifier has rail-to-rail operation. OUT Buffered Analog Output Voltage from DAC ...
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ADT7316/ADT7317/ADT7318 TERMINOLOGY Relative Accuracy Relative accuracy or integral nonlinearity (INL measure of the maximum deviation, in LSBs, from a straight line passing through the endpoints of the DAC transfer function. Typical INL vs. code plots can be seen ...
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Multiplying Bandwidth The amplifiers within the DAC have a finite bandwidth. The multiplying bandwidth is a measure of this. A sine wave on the reference (with full-scale code loaded to the DAC) appears on the output. The multiplying bandwidth is ...
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ADT7316/ADT7317/ADT7318 TYPICAL PERFORMANCE CHARACTERISTICS 0.20 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 –0. 100 150 DAC CODE Figure 10. ADT7318 Typical INL Plot 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 0 200 400 600 DAC CODE Figure 11. ...
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INL WCP 0.20 0.15 0.10 0.05 DNL WCP 0 DNL WCN –0.05 INL WCN –0.10 1.0 1.5 2.0 2.5 3.0 3.5 V (V) REF Figure 16. ADT7318 INL Error and DNL Error vs. V 0.14 INL WCP 0.12 ...
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ADT7316/ADT7317/ADT7318 2.00 ADC OFF, DAC OUTPUTS AT 0V 1.95 1.90 1.85 1.80 1.75 2.7 3.1 3.5 3.9 4.3 V (V) CC Figure 22. Supply Current vs. Supply Voltage @25° 2.7 3.1 3.5 ...
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V (V) REF Figure 28. Full-Scale Error vs. V REF 2.329 REF 2.328 DAC OUTPUT LOADED TO MIDSCALE 2.327 2.326 2.325 2.324 ...
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ADT7316/ADT7317/ADT7318 3.3V DD COMMON-MODE 8 VOLTAGE = 100mV –2 –4 –6 1 100 200 300 NOISE FREQUENCY (Hz) Figure 34. External Temperature Error vs. Common-Mode Noise Frequency 70 V DIFFERENTIAL-MODE 60 VOLTAGE = ...
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THEORY OF OPERATION Directly after the power-up calibration routine, the ADT7316/ ADT7317/ADT7318 go into idle mode. In this mode, the device is not performing any measurements and is fully powered up. All four DAC outputs are ...
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ADT7316/ADT7317/ADT7318 FUNCTIONAL DESCRIPTION—VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTERS The ADT7316/ADT7317/ADT7318 have four resistor-string DACs fabricated on a CMOS process, with resolutions of 12, 10, and 8 bits, respectively. They contain four output buffer 2 amplifiers and are written to via an I ...
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OPTIONAL CAPACITOR 3nF MAX. CAN BE ADDED TO IMPROVE HIGH FREQUENCY NOISE REJECTION IN NOISY ENVIRONMENTS REMOTE SENSING TRANSISTOR (2N3906) The buffered/unbuffered option is controlled by the DAC Configuration register (Address 0x1B; see the Registers section). The LDAC ...
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ADT7316/ADT7317/ADT7318 Negative Temperatures = Offset Register Code ( dec ) (0 V Temp) where D7 of Offset Register Code is set to 1 for negative temperatures. Example − + Offset Register Code dec 40 Because ...
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FUNCTIONAL DESCRIPTION—MEASUREMENT TEMPERATURE SENSOR The ADT7316/ADT7317/ADT7318 contain an ADC with spe- cial input signal conditioning to enable operation with external and on-chip diode temperature sensors. When the ADT7316/ ADT7317/ADT7318 are operating in single-channel mode, the ADC continually processes the measurement ...
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ADT7316/ADT7317/ADT7318 Table 8. V Data Format 2. REF Digital Output V Value (V) Binary DD 2.5 01 0110 1110 3.0 01 1011 0111 3.5 10 0000 0000 4.0 10 0100 1001 4.5 10 1001 0010 5.0 ...
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The technique used in the ADT7316/ADT7317/ADT7318 is to measure the change in V when the device is operated at two BE different currents. This is given by ΔV = KT/q × ln (N) BE where Boltzmann’s constant. q ...
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ADT7316/ADT7317/ADT7318 INTERRUPTS The measured results from the internal temperature sensor, external temperature sensor, and the V DD the T /V (greater than comparison) and T HIGH HIGH than or equal to comparison) limits. An interrupt occurs if the measurement exceeds ...
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REGISTERS The ADT7316/ADT7317/ADT7318 contain registers that are used to store the results of external and internal temperature measurements, V value measurements, high and low tem- DD perature and supply voltage limits. They also set output DAC voltage levels, configure multipurpose ...
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ADT7316/ADT7317/ADT7318 REGISTER DESCRIPTIONS The bit maps in this section show the register default settings at power-up, unless otherwise noted. Interrupt Status 1 Register (Read-Only) [Address 0x00] This 8-bit, read-only register reflects the status of some of the interrupts that can ...
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External Temperature Value Register MSBs (Read-Only) [Address 0x08] This 8-bit, read-only register stores the external temperature value from the external temperature sensor in twos complement format. The 8 MSBs of the 10-bit value are stored in this register. Table 21. ...
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ADT7316/ADT7317/ADT7318 DAC D Register LSBs (Read/Write) [Address 0x16] This 8-bit read/write register contains the 4/2 LSBs of the ADT7316/ADT7317 DAC D word, respectively. The value in this register is combined with the value in the DAC D register MSBs and ...
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Control Configuration 3 Register (Read/Write) [Address 0x1A] This configuration register is an 8-bit read/write register that is used to set up some of the operating modes of the ADT7316/ ADT7317/ADT7318. Table 38. Control Configuration ...
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ADT7316/ADT7317/ADT7318 Interrupt Mask 1 Register (Read/Write) [Address 0x1D] This mask register is an 8-bit, read/write register that can be used to mask out any interrupts that can cause the INT/ INT pin to go active. Table 44. Interrupt Mask 1 ...
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External Analog Temperature Offset Register (Read/Write) [Address 0x22] This register contains the offset value for the external thermal voltage output. A twos complement number can be written to this register which is then added to the measured result before it ...
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ADT7316/ADT7317/ADT7318 External T Limit Register (Read/Write) [Address 0x28] LOW This limit register is an 8-bit, read/write register that stores the twos complement of the external temperature lower limit that causes an interrupt and activates the INT/ INT output (if enabled). ...
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CS A (START HIGH (START LOW) Figure 50. Serial Interface—Selecting and Locking SPI Protocol 1 SCL SDA START BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE 2 Figure 51. I C—Writing to the ...
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ADT7316/ADT7317/ADT7318 SERIAL INTERFACE There are two serial interfaces that can be used on this part, the and the SPI interface. The device powers up with the serial 2 interface mode, but it is not ...
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Writing to the ADT7316/ADT7317/ADT7318 Depending on the register being written to, there are two different writes for the ADT7316/ADT7317/ADT7318 not possible block write to this part, that is auto-increment. Writing to the Address ...
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ADT7316/ADT7317/ADT7318 Write Operation Figure 54 and Figure 55 show the timing diagrams for a write operation to the ADT7316/ADT7317/ADT7318. Data is clocked into the registers on the rising edge of SCLK. When the CS line is high, the DIN and ...
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CS 1 SCLK D6 DIN D7 D5 DOUT START CS 1 SCLK DIN DOUT START READ COMMAND Figure 57. SPI—Reading Two Bytes of Data From Two Sequential Registers CS SPI READ ...
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ADT7316/ADT7317/ADT7318 SMBUS/SPI INT/ INT The ADT7316/ADT7317/ADT7318 INT/ INT output is an interrupt line that signals an over-limit/under-limit event on any of the measurement channels if the interrupt on that event has not been disabled. The ADT7316/ADT7317/ADT7318 are slave-only devices and ...
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LAYOUT CONSIDERATIONS Digital boards can be electrically noisy environments, and care must be taken to protect the analog inputs from noise, particularly when measuring the very small voltages from a remote diode sensor. Take the following precautions: • Place the ...
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... ADT7318ARQZ-REEL −40°C to +120°C 1 ADT7318ARQZ-REEL7 −40°C to +120°C ADT7317ARQ −40°C to +120°C ADT7317ARQ-REEL −40°C to +120°C ADT7317ARQ-REEL7 −40°C to +120°C 1 ADT7317ARQZ −40°C to +120°C 1 ADT7317ARQZ-REEL −40°C to +120°C 1 ADT7317ARQZ-REEL7 −40°C to +120°C ADT7316ARQ − ...
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NOTES ADT7316/ADT7317/ADT7318 Rev Page ...
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ADT7316/ADT7317/ADT7318 NOTES ©2003–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02661-0-1/07(B) Rev Page ...