Datasheet AD7656, AD7657, AD7658 (Analog Devices) - 4

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AD7656/AD7657/AD7658 Data Sheet Parameter B Version
1
Y Version
1
Unit Test Conditions/Comments
LOGIC INPUTS Input High Voltage (VINH) 0.7 × VDRIVE 0.7 × VDRIVE V min Input Low Voltage (VINL) 0.3 × VDRIVE 0.3 × VDRIVE V max Input Current (IIN) ±1 ±1 µA max Typically 10 nA, VIN = 0 V or VDRIVE Input Capacitance (CIN)3 10 10 pF max LOGIC OUTPUTS Output High Voltage (VOH) VDRIVE − 0.2 VDRIVE − 0.2 V min ISOURCE = 200 µA Output Low Voltage (VOL) 0.2 0.2 V max ISINK = 200 µA Floating-State Leakage Current ±1 ±1 µA max Floating-State Output Capacitance3 10 10 pF max Output Coding Twos complement CONVERSION RATE Conversion Time 3.1 3.1 µs max Track-and-Hold Acquisition Time2, 3 550 550 ns max Throughput Rate 250 250 kSPS Parallel interface mode only POWER REQUIREMENTS VDD 5/15 5/15 V nom min/max For 4 × VREF range, VDD = 10 V to 16.5 V VSS −5/−15 −5/−15 V nom min/max For 4 × VREF range, VDD = −10 V to −16.5 V AVCC 5 5 V nom DVCC 5 5 V nom VDRIVE 3/5 3/5 V nom min/max ITOTAL Digital I/PS = 0 V or VDRIVE Normal Mode (Static) 28 28 mA max AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, (Includes IAVCC, IVDD, IVSS, IVDRIVE, IDVCC) VSS = −16.5 V Normal Mode (Operational) 26 26 mA max fSAMPLE = 250 kSPS, AVCC = DVCC = VDRIVE = 5.25 V, (Includes IAVCC, IVDD, IVSS, IVDRIVE, IDVCC) VDD = 16.5 V, VSS = −16.5 V ISS (Operational) 0.25 0.25 mA max VSS = −16.5 V, fSAMPLE = 250 kSPS IDD (Operational) 0.25 0.25 mA max VDD = 16.5 V, fSAMPLE = 250 kSPS Partial Power-Down Mode 7 7 mA max AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Full Power-Down Mode (STBY Pin) 80 80 µA max SCLK on or off, AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Power Dissipation AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Normal Mode (Static) 143 143 mW max Normal Mode (Operational) 140 140 mW max fSAMPLE = 250 kSPS Partial Power-Down Mode 35 35 mW max Full Power-Down Mode (STBY Pin) 100 100 µW max 1 Temperature ranges are as follows: B version is −40°C to +85°C and Y version is −40°C to +125°C. 2 See the Terminology section. 3 Sample tested during initial release to ensure compliance. Rev. D | Page 4 of 32 Document Outline Features Applications Functional Block Diagram General Description Product Highlights Table of Contents Revision History Specifications AD7656 AD7657 AD7658 Timing Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Converter Details Track-and-Hold Section Analog Input Section ADC Transfer Function Reference Section Typical Connection Diagram Driving the Analog Inputs Interface Section Parallel Interface (SER/ = 0) Software Selection of ADCs Changing the Analog Input Range (/S SEL = 0) Changing the Analog Input Range (/S SEL = 1) Serial Interface (SER/ = 1) Serial Read Operation Daisy-Chain Mode (DCEN = 1, SER/ = 1) Standby/Partial Power-Down Modes of Operation Application Hints Layout Power Supply Configuration Outline Dimensions Ordering Guide