link to page 14 AD8368Data SheetPIN CONFIGURATION AND FUNCTION DESCRIPTIONSLIIEBDMTOPENVPSVPSMOICIN432102222921GAIN 118 ICOMDETO 217 ICOMHPFL 3AD836816 ICOMDECL 4TOP VIEW15 DECL(Not to Scale)DETI 514 DECLOCOM 613 VPSI789011121OOOMTPPSIPSIVVOCOUVPSVPS 2 NOTES 00 1. EXPOSED PAD. CONNECT EPAD TO LOW 5907- IMPEDANCE GROUND. 0 Figure 2. Pin Configuration Table 4. Pin Function Descriptions Pin No.MnemonicDescription 1 GAIN Gain Control. 2 DETO Detector Output. Provides an output error current for the AGC function. 3 HPFL High-Pass Filter Connection. A capacitor to ground sets the corner frequency of the internal output offset control loop that controls the minimum usable input frequency. 4, 14, 15 DECL Decoupling Pin. Nominally ~VS/2. Decoupling capacitance may need to be adjusted for AGC operation (see the Applications Information section). 5 DETI Detector Input. DC level referenced to DECL pin. 6, 7 OCOM Connect OCOM to low impedance ground. 8 OUTP Signal Output. Must be ac-coupled. 9, 10 VPSO Positive Supply Voltage, 4.5 V to 5.5 V. VPSO and VPSI must be connected together externally and properly bypassed. 11, 12, 13, 22, 23 VPSI Positive Supply Voltage, 4.5 V to 5.5 V. VPSO and VPSI must be connected together externally and properly bypassed. 16, 17, 18, 20 ICOM Connect ICOM to low impedance ground. 19 INPT Signal Input. Must be ac-coupled. 21 MODE Gain Direction Control. High for positive slope. Low for negative slope. 24 ENBL Apply a Positive Voltage (2.5 V VENBL VPSI) to Activate Device. EPAD Exposed Pad. Connect the exposed pad to low impedance ground. Rev. C | Page 6 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT DESCRIPTION INPUT ATTENUATOR AND INTERPOLATOR FIXED-GAIN STAGE AND OUTPUT BUFFER OUTPUT OFFSET CORRECTION INPUT AND OUTPUT IMPEDANCES GAIN CONTROL INTERFACE APPLICATIONS INFORMATION VGA OPERATION AGC OPERATION STABILITY AND LAYOUT CONSIDERATIONS EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE
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