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ADT7318:  ±0.5°C Accurate Digital Temperature Sensor and Quad Voltage Output 8-Bit DACs

The ADT7316/ADT7317/ADT7318*combine a 10-bit temperature-to-digital converter and a quad 12-/10-/8-bit DAC, respectively, in a 16-lead QSOP. This includes a bandgap temperature sensor and a 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25°C. The ADT7316/ ADT7317/ADT7318 operate from a single 2.7 V to 5.5 V supply. The output voltage of the DAC ranges from 0 V to ...More

ADT7318:  ±0.5°C Accurate Digital Temperature Sensor and Quad Voltage Output 8-Bit DACs

Product Description

The ADT7316/ADT7317/ADT7318*combine a 10-bit temperature-to-digital converter and a quad 12-/10-/8-bit DAC, respectively, in a 16-lead QSOP. This includes a bandgap temperature sensor and a 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25°C. The ADT7316/ ADT7317/ADT7318 operate from a single 2.7 V to 5.5 V supply. The output voltage of the DAC ranges from 0 V to 2 VREF, with an output voltage settling time of 7 μs typically. The ADT7316/ ADT7317/ADT7318 provide two serial inter-face options, a 4-wire serial interface that is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, and a 2-wire SMBus/I2C interface. They feature a standby mode that is controlled via the serial interface.

The reference for the four DACs is derived either internally or from two reference pins (one per DAC pair). The outputs of all DACs may be updated simultaneously using the software LDAC function or external LDAC pin.

The ADT7316/ADT7317/ADT7318 incorporate a power-on-reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. The ADT7316/ADT7317/ADT7318 wide supply voltage range, low supply current, and SPI-/I2C-compatible interface make them ideal for a variety of applications, including personal computers, office equipment, and domestic appliances.

Applications

  • Portable battery-powered instruments
  • Personal computers
  • Telecommunications systems
  • Electronic test equipment
  • Domestic appliances
  • Process control

    • *Protected by the following U.S. patent numbers: 5,764,174; 5,867,012;6,097,239; 6,169,442. Other patents pending.

    Data Sheet, Rev. B, 1/07

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    • ADT7316—four 12-bit DACs
    • ADT7317—four 10-bit DACs
    • Buffered voltage output
    • Guaranteed monotonic by design over all codes
    • 10-bit temperature-to-digital converter
    • Temperature sensor accuracy of ±0.5°C Supply range: 2.7 V to 5.5 V
    • Temperature range: −40°C to +120°C
    • DAC output range: 0 V to 2 VREF
    • Power-down current : <10 μA
    • Internal 2.28 VREF option
    • Double-buffered input logic
    • Buffered/unbuffered reference input option
    • Output Type: Digital
    • Sensor Output: DSP Serial,I²C ®,MICROWIRE (TM),QSPI (TM),SMBus,SPI (TM)
    • Temp Res(°C/LSB): 0.25°C/LSB
    • Supply Voltage Range: +2.7V to +5.5V
    • Temp Range(s): -40 to +120

    Functional Block Diagram for ADT7318

    类似产品

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    Part# Temp Res(°C/LSB) 25°C Temp Error (Deg C) Resolution (Bits) # Chan DAC Outputs Interface Temp Range(s) Supply Voltage Range Product Description Price* (1000-4999) Sensor Output Supply Current
    TMP03 0.3 ±3 16 0 --- PWM -40 to +100 +4.5V to +7V Serial PWM-Output Temperature Sensor w/ Open-Collector Output $3.27 PWM 1.3mA
    TMP04 0.3 ±3 16 0 --- PWM -40 to +100 +4.5V to +7V Serial PWM-Output Temperature Sensor w/ CMOS/TTL Output $3.27 PWM 1.3mA
    AD7814 0.25 n/a 10 0 --- Serial, SPI -55 to +125 +2.7V to +5.5V 10-Bit Digital Temperature Sensor in 6-Lead SOT-23 $1.00 DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM) 400µA
    AD7414 0.25 n/a 10 0 --- I2C, Serial -40 to +125 +2.7V to +5.5V SMBus/I2C, 10-Bit Digital Temperature Sensor in 6-Pin SOT w/ SMBus Alert and Over-Temperature Pin $1.04 I²C ®, SMBus 900µA
    AD7415 0.25 ±2 10 0 --- I2C, Serial -40 to +125 +2.7V to +5.5V SMBus/I2C, 10-Bit Digital Temperature Sensor in 5-Pin SOT $1.04 I²C ®, SMBus 900µA
    AD7416 0.25 n/a 10 0 --- I2C, Serial -40 to +125 +2.7V to +5.5V 10-Bit Temperature-to-Digital Converter, -40°C to +125°C, ±2°C Accuracy $1.00 I²C ® 1mA
    AD7314 0.25 ±1 10 0 --- Serial, SPI -35 to +85 +2.65V to +5.5V Low Voltage, 10-Bit Digital Temperature Sensor in 8-Lead µSOP $0.66 DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM) 300µA
    AD7818 0.25 ±1 10 1 --- Serial, SPI -40 to +85 +2.7V to +5.5V 9 µs, 10-Bit ADC w/ On-Chip Temperature Sensor & Over-Temperature Output $2.34 MICROWIRE (TM), QSPI (TM), SPI (TM) 2mA
    AD7418 0.25 ±1 10 2 --- I2C, Serial -40 to +125 +2.7V to +5.5V 10-Bit ADC, Programmable Hi-Low Temp Limits w/ Over-Temp Alert, , Auto Pwr Dwn @ EOC $2.34 I²C ® 600µA
    ADT7316 0.25 ±0.5 10 3 12-Bit x 4 I2C, I2C/SPI, Serial, SM Bus, SPI -40 to +120 +2.7V to +5.5V SPI/I2C® Compatible,10-Bit Digital Temperature Sensor With Quad Voltage-Output 12-Bit DAC $3.72 I²C ®, QSPI (TM), SMBus, SPI (TM) 3mA
    ADT7317 0.25 ±0.5 10 3 10-Bit x 4 I2C, I2C/SPI, SM Bus, SPI -40 to +120 +2.7V to +5.5V SPI/I2C® Compatible,10-Bit Digital Temperature Sensor w/ Quad 10-Bit Voltage Output DAC $3.65 DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SMBus, SPI (TM) 3mA
    ADT7318 0.25 +0.5 10 3 8-Bit x 4 I2C, I2C/SPI, Serial, SM Bus, SPI -40 to +120 +2.7V to +5.5V SPI/I2C® Compatible,10-Bit Digital Temperature Sensor & Quad Voltage Output 8-Bit DAC $3.56 DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SMBus, SPI (TM) 3mA
    AD7817 0.25 ±1 10 4 --- Serial, SPI -40 to +85 +2.7V to +5.5V 4-Channel, 9 µs, 10-Bit ADC with On-Chip Temperature Sensor & Over-Temperature Flag $3.29 MICROWIRE (TM), QSPI (TM), SPI (TM) 2mA
    AD7417 0.25 ±1 10 5 --- I2C, Serial -40 to +125 +2.7V to +5.5V 4-Channel, 10-Bit ADC w/ on-Chip Temperature Sensor, Programmable Setpoints, and Overtemp Flag Out $2.99 I²C ® 600µA
    ADT7516 0.25 n/a 10 7 12-Bit x 4 I2C/SPI, Serial, SPI -40 to +120 +2.7V to +5.5V SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 12-Bit Voltage DAC Control Outputs $3.72 I²C ®, SPI (TM) 3mA
    ADT7517 0.25 n/a 10 7 10-Bit x 4 I2C/SPI, Serial, SPI -40 to +120 +2.7V to +5.5V SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 10-Bit Voltage DAC Control Outputs $3.65 DSP Serial, I²C ®, SPI (TM) 3mA
    ADT7519 0.25 n/a 10 7 8-Bit x 4 I2C/SPI, Serial -40 to +120 +2.7V to +5.5V SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 8-Bit Voltage DAC Control Outputs $3.56 DSP Serial, I²C ®, SPI (TM) 3mA
    ADT7411 0.25 +0.5 10 10 --- I2C, I2C/SPI, Serial, SPI -40 to +120 +2.7V to +5.5V SPI®-/I2C®-Compatible, 10-Bit ADC w/ Local & Remote Temp Msmt, 8 GP Analog Inputs, and VDD monitor $2.22 DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SPI (TM) 3mA
    ADT7408 0.0625 ±1 12 0 --- I2C, SM Bus -20 to +125 +3V to +3.6V ± 2 Degree C Accurate, 12-Bit Digital Temperature Sensor $0.87 I²C ®, SMBus 550µA
    ADT75 0.0625 n/a 12 0 --- I2C, Serial, SM Bus -55 to +125 +3V to +5.5V ±1 Deg C Accuracy, 12-Bit Digital Temperature Sensor $0.66 I²C ®, SMBus 525µA
    ADT7301 0.03125 n/a 13 0 --- Serial, SPI -40 to +150 +2.7V to +5.5V 13-Bit, ±1ºC Accurate, MicroPower Digital Temperature Sensor in 6-Lead SOT-23 and 8-Lead MSOP $1.21 DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM) 2.2µA
    ADT7302 0.03125 n/a 13 0 --- Serial, SPI -40 to +125 +2.7V to +5.25V ±2°C Accurate, MicroPower Digital Temperature Sensor in 6-Lead SOT-23 $0.78 DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM) 2.2mA
    TMP06 0.025 ±0.5 12 0 --- PWM -40 to +150 +2.7V to +5.5V 0.5°C Accurate PWM Temperature Sensor in 5-Lead SC-70 or SOT-23 w/ Open Drain Output $0.66 PWM 650µA
    TMP05 0.025 ±0.5 12 0 --- PWM -40 to +150 +2.7V to +5.5V 0.5°C Accurate PWM Temperature Sensor in 5-Lead SC-70 or SOT-23 w/ CMOS/TTL Output $0.70 PWM 650µA
    ADT7310 0.0078 ±0.5 16 0 n/a Serial, SPI -55 to +150 +2.7V to +5.5V ±0.5 Deg C Accurate, 16-Bit Digital SPI Temperature Sensor $1.95 SPI (TM) 230µA
    ADT7410 0.0078 ±0.5 16 0 --- I2C -55 to +150 +2.7V to +5.5V ±0.5°C Accurate, 16-Bit Digital I2C Temperature Sensor $1.95 I²C ® 230µA
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    Sorted by Temperature Resolution (Ascending) and # of External ADC Input Channels (Ascending)


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