Datasheet AD8260 (Analog Devices) - 4

ManufacturerAnalog Devices
DescriptionHigh Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
Pages / Page32 / 4 — AD8260. Data Sheet. Parameter. Test Conditions/Comments. Min. Typ. Max. …
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AD8260. Data Sheet. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit

AD8260 Data Sheet Parameter Test Conditions/Comments Min Typ Max Unit

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AD8260 Data Sheet Parameter Test Conditions/Comments Min Typ Max Unit
Output Third-Order Intercept, RLOAD = 50 Ω VOUT = 1 V p-p, f = 10 MHz 33 dBm VOUT = 2 V p-p, f = 10 MHz 40 dBm VOUT = 1 V p-p, f = 45 MHz 23 dBm VOUT = 2 V p-p, f = 45 MHz 28 dBm PREAMPLFIER AND VGA—GENERAL PARAMETERS −3 dB Small Signal Bandwidth VOUT = 10 mV p-p, gain code = 0110 230 MHz −3 dB Large Signal Bandwidth VOUT = 1 V p-p, gain code = 0110 165 MHz VOUT = 2 V p-p, gain code = 0110 135 MHz Slew Rate VOUT = 1 V p-p, gain code = 0110 330 V/µs VOUT = 1.6 V p-p, gain code = 0110 335 V/µs Input Voltage Noise f = 10 MHz (shorted input) 2.4 nV/√Hz f = 10 MHz (input open) 6.2 nV/√Hz Noise Figure Maximum gain (gain code = 1011), RS = 50 Ω, 10.2 dB unterminated Maximum gain (gain code = 1011), RS = 50 Ω, 15.5 dB shunt terminated with 50 Ω Output-Referred Noise Maximum gain (gain code = 1011), gain = 24 dB (input 38 nV/√Hz short) Maximum gain (gain code = 1011), gain = 24 dB (input 98.1 nV/√Hz open) Minimum gain (gain code = 0001), gain = −6 dB 25 nV/√Hz Output Impedance DC to 10 MHz ≤3 Ω Output Signal Range (per Pin) RLOAD ≥ 500 Ω VMDO ± 0.7 V VS = +5 V VMDO ± 1.4 V VS = ±5 V ±3.6 V Input Signal Range Preamplifier input VMDO ± 0.3 V Output Offset Voltage Maximum gain (gain code = 1011), gain = 24 dB, 3 σ −50 ±20 +50 mV limits PREAMPLIFIER AND VGA—DYNAMIC PERFORMANCE Harmonic Distortion Gain code = 0110, gain = 9 dB, VOUT = 1 V p-p HD2 f = 1 MHz −90 dBc HD3 −87 dBc HD2 f = 10 MHz −75 dBc HD3 −58 dBc Harmonic Distortion Gain code = 1011, gain = 24 dB, VOUT = 2 V p-p HD2 f = 1 MHz −94 dBc HD3 −90 dBc HD2 f = 10 MHz −61 dBc HD3 −84 dBc Input 1 dB Compression Point Minimum gain (gain code = 0001), gain = −6 dB 1.9 dBm (preamplifier limited) Maximum gain (gain code = 1011), gain = 24 dB −9.2 dBm (VGA limited) MTPR (In-Band) VOUT = 1.4 V p-p maximum, 10 tones, 2 MHz to 22 MHz −68 dBc with missing tone at 12 MHz (spacing 2 MHz), gain code = 1011, gain = 24 dB VOUT = 1.4 V p-p maximum, 16 tones, 2 MHz to 38 MHz −61 dBc with missing tones at 10 MHz, 20 MHz, 30 MHz, and 40 MHz (spacing 2 MHz) Two-Tone Intermodulation Distortion (IMD3) Gain code = 1011, gain = 24 dB VOUT = 1 V p-p, f1 = 10 MHz, f2 = 11 MHz −92 dBc VOUT = 2 V p-p, f1 = 10 MHz, f2 = 11 MHz −77 dBc VOUT = 1 V p-p, f1 = 45 MHz, f2 = 46 MHz −50 dBc VOUT = 2 V p-p, f1 = 45 MHz, f2 = 46 MHz −36 dBc Output Third-Order Intercept Gain code = 1011, gain = 24 dB VOUT = 1 V p-p, f = 10 MHz 44 dBm VOUT = 2 V p-p, f = 10 MHz 43 dBm VOUT = 1 V p-p, f = 45 MHz 27 dBm VOUT = 2 V p-p, f = 45 MHz 22 dBm Rev. B | Page 4 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION OVERVIEW HIGH CURRENT DRIVER AMPLIFIER PRECAUTIONS TO BE OBSERVED DURING HALF-DUPLEX OPERATION VMID BUFFER PREAMPLIFIER PREAMPLIFIER NOISE DGA GAIN CONTROL OUTPUT STAGE ATTENUATOR SINGLE-SUPPLY OPERATION AND AC COUPLING POWER-UP/POWER-DOWN SEQUENCE LOGIC INTERFACES APPLICATIONS INFORMATION EVALUATION BOARD CONNECTING THE EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE