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ADT7317ARQ Datasheet(PDF) 1 Page - Analog Devices |
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ADT7317ARQ Datasheet(HTML) 1 Page - Analog Devices |
1 / 44 page ±0.5°C Accurate Digital Temperature Sensor and Quad Voltage Output 12-/10-/8-Bit DACs ADT7316/ADT7317/ADT7318 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2003–2007 Analog Devices, Inc. All rights reserved. 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: 2.7 V to 5.5 V 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 Power-on reset to 0 V Simultaneous update of outputs (LDAC function) On-chip rail-to-rail output buffer amplifier I2C®-, SMBus-, SPI®-, QSPI™-, MICROWIRE™-, and DSP- compatible 4-wire serial interface SMBus packet error checking (PEC) compatible 16-lead QSOP APPLICATIONS Portable battery-powered instruments Personal computers Telecommunications systems Electronic test equipment Domestic appliances Process control PIN CONFIGURATION 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VOUT-A VREF-AB CS D+ VDD GND VOUT-B VOUT-D VREF-CD SCL/SCLK INT/INT D– LDAC DOUT/ADD SDA/DIN VOUT-C TOP VIEW (Not to Scale) ADT7316/ ADT7317/ ADT7318 Figure 1. GENERAL DESCRIPTION The ADT7316/ADT7317/ADT73181combine a 10-bit temperature-to-digital converter and a quad 12-/10-/8-bit DAC, respectively, in a 16-lead QSOP. This includes a band gap 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. 1 Protected by the following U.S. patent numbers: 5,764,174; 5,867,012; 6,097,239; 6,169,442. |
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