Datasheet AD7298-1 (Analog Devices) - 5

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AD7298-1 Parameter Min Typ Max Unit Test Conditions/Comments
LOGIC OUTPUTS Output High Voltage, VOH VDRIVE − 0.3 V VDRIVE < 1.8 VDRIVE − 0.2 V VDRIVE ≥ 1.8 Output Low Voltage, VOL 0.4 V Floating State Leakage Current ±0.01 ±1 μA Floating State Output Capacitance3 8 pF CONVERSION RATE Conversion Time 1 t2 + (16 × tSCLK) μs For VIN0 to VIN7 with one cycle latency Track-and-Hold Acquisition Time2, 3 100 ns Full-scale step input Throughput Rate 1 MSPS fSCLK = 20 MHz; for analog voltage conversions, one cycle latency POWER REQUIREMENTS Digital inputs = 0 V or VDRIVE VDD 2.8 3 3.6 V VDRIVE 1.65 3 3.6 V I 5 TOTAL VDD = 3.6 V, VDRIVE = 3.6 V Normal Mode (Operational) 5.8 6.4 mA Normal Mode (Static) 4.1 4.6 mA Partial Power-Down Mode 2.7 3.3 mA Full Power-Down Mode 1 1.6 μA TA = −40°C to +25°C 10 μA TA = −40°C to +125°C Power Dissipation6 Normal Mode (Operational) 17.4 19.2 mW VDD = 3 V, VDRIVE = 3 V 23 mW Normal Mode (Static) 14.8 16.6 mW Partial Power-Down Mode 9.8 11.9 mW Full Power-Down Mode 3.6 5.8 μW TA = −40°C to +25°C 36 μW TA = −40°C to +125°C 1 All specifications expressed in decibels are referred to full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified. 2 See the Terminology section. 3 Sample tested during initial release to ensure compliance. 4 Refers to the VREF pin specified for 25°C. 5 ITOTAL is the total current flowing in VDD and VDRIVE. 6 Power dissipation is specified with VDD = VDRIVE = 3.6 V, unless otherwise noted. Rev. A | Page 4 of 24 Document Outline Features Functional Block Diagram General Description Product Highlights Revision History Specifications Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Terminology Circuit Information Converter Operation Analog Input ADC Transfer Function VDRIVE The Internal or External Reference Control Register Modes of Operation Traditional Multichannel Mode of Operation Repeat Operation Power-Down Modes Normal Mode Partial Power-Down Mode Full Power-Down Mode Powering Up the AD7298-1 Reset Serial Interface Layout and Configuration Outline Dimensions Ordering Guide