Datasheet ADA4939-1/ADA4939-2 (Analog Devices) - 5

link to page 16 link to page 15 link to page 15
Data Sheet ADA4939-1/ADA4939-2 3.3 V OPERATION
TA = 25°C, +VS = 3.3 V, −VS = 0 V, VOCM = +VS/2, RF = 402 Ω, RG = 200 Ω, RT = 60.4 Ω (when used), RL, dm = 1 kΩ, unless otherwise noted. All specifications refer to single-ended input and differential outputs, unless otherwise noted. Refer to Figure 42 for signal definitions.
±DIN to VOUT, dm Performance Table 4. Parameter Test Conditions/Comments Min Typ Max Unit
DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth VOUT, dm = 0.1 V p-p 1400 MHz Bandwidth for 0.1 dB Flatness VOUT, dm = 0.1 V p-p, ADA4939-1 300 MHz VOUT, dm = 0.1 V p-p, ADA4939-2 90 MHz Large Signal Bandwidth VOUT, dm = 2 V p-p 1400 MHz Slew Rate VOUT, dm = 2 V p-p, 25% to 75% 5000 V/µs Overdrive Recovery Time VIN = 0 V to 1.0 V step, G = 3.16 <1 ns NOISE/HARMONIC PERFORMANCE See Figure 41 for distortion test circuit Second Harmonic VOUT, dm = 2 V p-p, 10 MHz −100 dBc VOUT, dm = 2 V p-p, 70 MHz −90 dBc VOUT, dm = 2 V p-p, 100 MHz −83 dBc Third Harmonic VOUT, dm = 2 V p-p, 10 MHz −94 dBc VOUT, dm = 2 V p-p, 70 MHz −82 dBc VOUT, dm = 2 V p-p, 100 MHz −75 dBc IMD f1 = 70 MHz, f2 = 70.1 MHz, VOUT, dm = 2 V p-p −87 dBc f1 = 140 MHz, f2 = 140.1 MHz, VOUT, dm = 2 V p-p −70 dBc Voltage Noise (RTI) f = 100 kHz 2.3 nV/√Hz Input Current Noise f = 100 kHz 6 pA/√Hz Crosstalk f = 100 MHz, ADA4939-2 −80 dB INPUT CHARACTERISTICS Offset Voltage VOS, dm = VOUT, dm/2, VDIN+ = VDIN− = +VS/2 −3.5 ±0.5 +3.5 mV TMIN to TMAX variation ±2.0 µV/°C Input Bias Current −26 −10 +2.2 µA TMIN to TMAX variation ±0.5 µA/°C Input Offset Current −11.2 ±0.4 +11.2 Input Resistance Differential 180 kΩ Common mode 450 kΩ Input Capacitance 1 pF Input Common-Mode Voltage 0.9 2.4 V CMRR ∆VOUT, dm/∆VIN, cm, ∆VIN, cm = ±1 V −85 −75 dB OUTPUT CHARACTERISTICS Output Voltage Swing Maximum ∆VOUT, single-ended output, RF = RG = 10 kΩ 0.8 2.5 V Linear Output Current 75 mA Output Balance Error ∆VOUT, cm/∆VOUT, dm, ∆VOUT, dm = 1 V, f = 10 MHz, −61 dB see Figure 40 for test circuit Rev. A | Page 5 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS 5 V OPERATION ±DIN to VOUT, dm Performance VOCM to VOUT, cm Performance General Performance 3.3 V OPERATION ±DIN to VOUT, dm Performance VOCM to VOUT, cm Performance General Performance ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS OPERATIONAL DESCRIPTION DEFINITION OF TERMS Differential Voltage Common-Mode Voltage Balance THEORY OF OPERATION ANALYZING AN APPLICATION CIRCUIT SETTING THE CLOSED-LOOP GAIN STABLE FOR GAINS ≥2 ESTIMATING THE OUTPUT NOISE VOLTAGE IMPACT OF MISMATCHES IN THE FEEDBACK NETWORKS CALCULATING THE INPUT IMPEDANCE FOR AN APPLICATION CIRCUIT Terminating a Single-Ended Input INPUT COMMON-MODE VOLTAGE RANGE INPUT AND OUTPUT CAPACITIVE AC COUPLING MINIMUM RG VALUE OF 50 Ω SETTING THE OUTPUT COMMON-MODE VOLTAGE LAYOUT, GROUNDING, AND BYPASSING HIGH PERFORMANCE ADC DRIVING OUTLINE DIMENSIONS ORDERING GUIDE