Datasheet AD7457 (Analog Devices) - 5

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AD7457 Parameter Test Conditions/Comments B Version1 Unit
POWER REQUIREMENTS VDD 2.7/5.25 V min/max I 7, 8 DD During Conversion6 VDD = 4.75 V to 5.25 V 1.5 mA max VDD = 2.7 V to 3.6 V 1.2 mA max Normal Mode (Static) SCLK on or off 0.5 mA typ Normal Mode (Operational) VDD = 4.75 V to 5.25 V 0.7 mA max VDD= 2.7 V to 3.6 V 0.33 mA max Power-Down SCLK on or off 1 µA max Power Dissipation Normal Mode (Operational) VDD = 5 V 3 mW max VDD = 3 V 0.9 mW max Power-Down VDD = 5 V; SCLK on or off 5 µW max VDD = 3 V; SCLK on or off 3 µW max 1 Temperature range for B version: −40°C to +85°C. 2 See the Terminolo s gy ection. 3 Analog inputs with slew rates exceeding 27 V/µs (full-scale input sine wave > 3.5 MHz) within the acquisition time may cause an incorrect result to be returned by the converter. 4 A dc input is applied to VIN– to provide a pseudo ground for VIN+. 5 The AD7457 is functional with a reference input range of 100 mV to VDD. 6 Guaranteed by characterization. 7 See the Power Consumptio sect n ion. 8 Measured with a full-scale dc input. Rev. A | Page 4 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT ANALOG INPUT STRUCTURE DIGITAL INPUTS REFERENCE SECTION SERIAL INTERFACE POWER CONSUMPTION MICROPROCESSOR INTERFACING AD7457 to ADSP-218x APPLICATION HINTS GROUNDING AND LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE