Datasheet AD8317 (Analog Devices) - 6

AD8317 Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS INHI 1 8 INLO COMM 2 7 VPOS AD8317 CLPF 3 TOP VIEW 6 TADJ (Not to Scale) VSET 4 5 VOUT NOTES 1. EXPOSED PAD MUST BE
002 1-
CONNECTED TO GROUND VIA
54
A LOW IMPEDANCE PATH.
05 Figure 2. Pin Configuration
Table 3. Pin Function Descriptions Pin No. Mnemonic Description
1 INHI RF Input. Nominal input range of −50 dBm to 0 dBm, referenced to 50 Ω; ac-coupled RF input. 2 COMM Device Common. Connect to a low impedance ground plane. 3 CLPF Loop Filter Capacitor. In measurement mode, this capacitor sets the pulse response time and video bandwidth. In controller mode, the capacitance on this node sets the response time of the error amplifier/integrator. 4 VSET Setpoint Control Input for Controller Mode or Feedback Input for Measurement Mode. 5 VOUT Measurement and Controller Output. In measurement mode, VOUT provides a decreasing linear-in-dB representation of the RF input signal amplitude. In controller mode, VOUT is used to control the gain of a VGA or VVA with a positive gain sense (increasing voltage increases gain). 6 TADJ Temperature Compensation Adjustment. Frequency-dependent temperature compensation is set by connecting a ground-referenced resistor to this pin. 7 VPOS Positive Supply Voltage: 3.0 V to 5.5 V. 8 INLO RF Common for INHI. AC-coupled RF common. EPAD Exposed Pad. Exposed pad must be connected to ground via a low impedance path. Rev. D | Page 6 of 19 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 THEORY OF OPERATION USING THE AD8317 BASIC CONNECTIONS INPUT SIGNAL COUPLING OUTPUT INTERFACE SETPOINT INTERFACE TEMPERATURE COMPENSATION OF OUTPUT VOLTAGE MEASUREMENT MODE SETTING THE OUTPUT SLOPE IN MEASUREMENT MODE CONTROLLER MODE OUTPUT FILTERING OPERATION BEYOND 8 GHz EVALUATION BOARD DIE INFORMATION OUTLINE DIMENSIONS ORDERING GUIDE