AD7989-1/AD7989-5Data Sheet VDD = 2.5 V, VIO = 1.71 V to 5.5 V, VREF = 5 V, TA = −40°C to +85°C, unless otherwise noted. Table 3. Parameter TestConditions/CommentsMinTypMaxUnit REFERENCE Voltage Range 2.4 5.1 V Load Current VREF = 5 V 250 μA SAMPLING DYNAMICS −3 dB Input Bandwidth 10 MHz Aperture Delay VDD = 2.5 V 2 ns DIGITAL INPUTS Logic Levels VIL VIO > 3 V –0.3 +0.3 × VIO V VIO ≤ 3 V –0.3 +0.1 × VIO V VIH VIO > 3 V 0.7 × VIO VIO + 0.3 V VIO ≤ 3 V 0.9 × VIO VIO + 0.3 V IIL −1 +1 μA IIH −1 +1 μA DIGITAL OUTPUTS Data Format Serial, 18 bits, twos complement Pipeline Delay Conversion results available immediately after completed conversion VOL ISINK = +500 μA 0.4 V VOH ISOURCE = −500 μA VIO − 0.3 V POWER SUPPLIES VDD 2.375 2.5 2.625 V VIO 1.71 5.5 V Standby Current1, 2 VDD and VIO = 2.5 V, 25°C 0.35 μA AD7989-1 Power Dissipation VDD = 2.625 V, VREF = 5 V, VIO = 3 V Total 10 kSPS throughput 70 86 μW 100 kSPS throughput 700 860 μW VDD Only 400 μW REF Only 170 μW VIO Only 130 μW AD7989-5 Power Dissipation VDD = 2.625 V, VREF = 5 V, VIO = 3 V Total 500 kSPS throughput 3.5 4.3 mW VDD Only 2 mW REF Only 0.85 mW VIO Only 0.65 mW Energy per Conversion 7.0 nJ/sample TEMPERATURE RANGE Specified Performance TMIN to TMAX −40 +85 °C 1 With all digital inputs forced to VIO or ground as required. 2 During acquisition phase. Rev. B | Page 4 of 24 Document Outline Features Applications General Description Typical Applications Circuit Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Single-Ended to Differential Driver Voltage Reference Input Power Supply Digital Interface CSB Mode, 3-Wire CSB Mode, 4-Wire Chain Mode Applications Information Interfacing to Blackfin® DSP Layout Evaluating AD7989-1/AD7989-5 Performance Outline Dimensions Ordering Guide
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