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AD5398BCPZ-REEL7 Fiches technique(PDF) 1 Page - Analog Devices |
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AD5398BCPZ-REEL7 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 16 page 120 mA, Current Sinking, 10-Bit, I2C DAC AD5398 FEATURES 120 mA current sink Available in 8-lead LFCSP package 2-wire (I2C®-compatible) serial interface 10-bit resolution Integrated current sense resistor 2.7 V to 5.5 V power supply Guaranteed monotonic over all codes Power-down to 0.5 μA typical Internal reference Ultralow noise preamplifier Power-down function Power-on reset CONSUMER APPLICATIONS Lens autofocus Image stabilization Optical zoom Shutters Iris/exposure Neutral density filter NDFs Lens covers Camera phones Digital still cameras Camera modules Digital video cameras (DVCs)/camcorders Camera-enabled devices Security cameras Web/PC cameras INDUSTRIAL APPLICATIONS Heater control Fan control Cooler (Peltier) control Solenoid control Valve control Linear actuator control Light control Current loop control FUNCTIONAL BLOCK DIAGRAM POWER-ON RESET 3 SDA 7 AGND 2 DGND 6 VDD 4 SCL 1 PD 8 ISINK RSENSE 3.3 Ω I2C SERIAL INTERFACE 10-BIT CURRENT OUTPUT DAC REFERENCE R AD5398 5 DGND Figure 1. GENERAL DESCRIPTION The AD5398 is a single 10-bit DAC with 120 mA output current sink capability. It features an internal reference and operates from a single 2.7 V to 5.5 V supply. The DAC is controlled via a 2-wire (I2C-compatible) serial interface that operates at clock rates up to 400 kHz. The AD5398 incorporates a power-on reset circuit, which ensures that the DAC output powers up to 0 V and remains there until a valid write takes place. It has a power-down feature that reduces the current consumption of the device to 1 μA max. The AD5398 is designed for autofocus, image stabilization, and optical zoom applications in camera phones, digital still cameras, and camcorders. The AD5398 also has many industrial applications, such as controlling temperature, light, and movement, over the range − 40°C to +85°C without derating. The I2C address range for the AD5398 is 0x18 to 0x1F inclusive. Rev. A 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 © 2005 Analog Devices, Inc. All rights reserved. |
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