Datasheet ADA4940-2 (Analog Devices) - 6

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ADA4940-1/ADA4940-2 Data Sheet VS = 3 V
VOCM = Mid Supply, RF = RG = 1 kΩ, RL, dm = 1 kΩ, TA = 25°C, LFCSP package, unless otherwise noted. TMIN to TMAX = −40°C to +125°C. (See Figure 61 for the definition of terms.)
+DIN or –DIN to VOUT, dm Performance Table 6. Parameter Test Conditions/Comments Min Typ Max Unit
DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth VOUT, dm = 0.1 V p-p 240 MHz VOUT, dm = 0.1 V p-p, G = 2 200 MHz VOUT, dm = 0.1 V p-p, G = 5 70 MHz −3 dB Large Signal Bandwidth VOUT, dm = 2 V p-p 24 MHz VOUT, dm = 2 V p-p, G = 2 20 MHz VOUT, dm = 2 V p-p, G = 5 17 MHz Bandwidth for 0.1 dB Flatness VOUT, dm = 0.1 V p-p 14 MHz Slew Rate VOUT, dm = 2 V step 90 V/µs Settling Time to 0.1% VOUT, dm = 2 V step 37 ns Overdrive Recovery Time G = 2, VIN, dm = 3.6 V p-p, triangle wave 85 ns NOISE/HARMONIC PERFORMANCE HD2/HD3 VOUT, dm = 2 V p-p, fC = 50 kHz (HD2/HD3) −115/−121 dBc VOUT, dm = 2 V p-p, fC = 1 MHz (HD2/HD3) −104/−96 dBc IMD3 VOUT, dm = 2 V p-p, f1 = 1.9 MHz, f2 = 2.1 MHz −98 dBc Input Voltage Noise f = 100 kHz 3.9 nV/√Hz Input Current Noise f = 100 kHz 0.84 pA/√Hz Crosstalk VOUT, dm = 2 V p-p, fC = 1 MHz −110 dB INPUT CHARACTERISTICS Input Offset Voltage VIP = VIN = VOCM = 1.5 V −0.4 ±0.06 +0.4 mV Input Offset Voltage Drift TMIN to TMAX 1.2 µV/°C Input Bias Current −1.6 −1.1 µA Input Bias Current Drift TMIN to TMAX −4.5 nA/°C Input Offset Current −500 ±50 +500 nA Input Common-Mode Voltage Range −VS − 0.2 to V +VS − 1.2 Input Resistance Differential 33 kΩ Common mode 50 MΩ Input Capacitance 1 pF Common-Mode Rejection Ratio (CMRR) ΔVOS, dm/ΔVIN, cm, ∆VIN, cm = ±0.25 V dc 86 114 dB Open-Loop Gain 91 99 dB OUTPUT CHARACTERISTICS Output Voltage Swing Each single-ended output −VS + 0.08 to −VS + 0.04 to V +VS − 0.08 +VS − 0.04 Linear Output Current f = 1 MHz, RL, dm = 26 Ω, SFDR = −60 dBc 38 mA peak Output Balance Error f = 1 MHz, ΔVOUT, cm/ΔVOUT, dm −65 −60 dB Rev. C | Page 6 of 32 Document Outline Features Applications General Description Functional Block Diagrams Revision History Specifications VS = 5 V +DIN or –DIN to VOUT, dm Performance VOCM to VOUT, cm Performance General Performance VS = 3 V +DIN or –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 Terminology Definition of Terms Differential Voltage Common-Mode Voltage (CMV) Common-Mode Offset Voltage Differential VOS, Differential CMRR, and VOCM CMRR Balance Theory of Operation Applications Information Analyzing an Application Circuit Setting the Closed-Loop Gain Estimating the Output Noise Voltage Impact of Mismatches in the Feedback Networks Calculating the Input Impedance of an Application Circuit Terminating a Single-Ended Input Input Common-Mode Voltage Range Input and Output Capacitive AC Coupling Setting the Output Common-Mode Voltage DISABLE Pin Driving a Capacitive Load Driving a High Precision ADC Layout, Grounding, and Bypassing ADA4940-1 LFCSP Example Outline Dimensions Ordering Guide