Datasheet ADA4939-1/ADA4939-2 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Ultralow Distortion Differential ADC Driver |
| Pages / Page | 24 / 4 — ADA4939-1/ADA4939-2. Data Sheet. VOCM to VOUT, cm Performance. Table 2. … |
| Revision | A |
| File Format / Size | PDF / 597 Kb |
| Document Language | English |
ADA4939-1/ADA4939-2. Data Sheet. VOCM to VOUT, cm Performance. Table 2. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
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ADA4939-1/ADA4939-2 Data Sheet VOCM to VOUT, cm Performance Table 2. Parameter Test Conditions/Comments Min Typ Max Unit
VOCM DYNAMIC PERFORMANCE −3 dB Bandwidth 670 MHz Slew Rate VIN = 1.5 V to 3.5 V, 25% to 75% 2500 V/µs Input Voltage Noise (RTI) f = 100 kHz 7.5 nV/√Hz VOCM INPUT CHARACTERISTICS Input Voltage Range 1.3 3.5 V Input Resistance 8.3 9.7 11.5 kΩ Input Offset Voltage VOS, cm = VOUT, cm, VDIN+ = VDIN− = +VS/2 −3.7 ±0.5 +3.7 mV VOCM CMRR ΔVOUT, dm/ΔVOCM, ΔVOCM = ±1 V −90 −73 dB Gain ΔVOUT, cm/ΔVOCM, ΔVOCM = ±1 V 0.97 0.98 0.99 V/V
General Performance Table 3. Parameter Test Conditions/Comments Min Typ Max Unit
POWER SUPPLY Operating Range 3.0 5.25 V Quiescent Current per Amplifier 35.1 36.5 37.7 mA TMIN to TMAX variation 16 µA/°C Powered down 0.26 0.32 0.38 mA Power Supply Rejection Ratio ΔVOUT, dm/ΔVS, ΔVS = 1 V −90 −80 dB POWER-DOWN (PD) PD Input Voltage Powered down ≤1 V Enabled ≥2 V Turn-Off Time 500 ns Turn-On Time 100 ns PD Pin Bias Current per Amplifier Enabled PD = 5 V 30 µA Disabled PD = 0 V −200 µA OPERATING TEMPERATURE RANGE −40 +105 °C Rev. A | Page 4 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
VOCM DYNAMIC PERFORMANCE −3 dB Bandwidth 670 MHz Slew Rate VIN = 1.5 V to 3.5 V, 25% to 75% 2500 V/µs Input Voltage Noise (RTI) f = 100 kHz 7.5 nV/√Hz VOCM INPUT CHARACTERISTICS Input Voltage Range 1.3 3.5 V Input Resistance 8.3 9.7 11.5 kΩ Input Offset Voltage VOS, cm = VOUT, cm, VDIN+ = VDIN− = +VS/2 −3.7 ±0.5 +3.7 mV VOCM CMRR ΔVOUT, dm/ΔVOCM, ΔVOCM = ±1 V −90 −73 dB Gain ΔVOUT, cm/ΔVOCM, ΔVOCM = ±1 V 0.97 0.98 0.99 V/V
General Performance Table 3. Parameter Test Conditions/Comments Min Typ Max Unit
POWER SUPPLY Operating Range 3.0 5.25 V Quiescent Current per Amplifier 35.1 36.5 37.7 mA TMIN to TMAX variation 16 µA/°C Powered down 0.26 0.32 0.38 mA Power Supply Rejection Ratio ΔVOUT, dm/ΔVS, ΔVS = 1 V −90 −80 dB POWER-DOWN (PD) PD Input Voltage Powered down ≤1 V Enabled ≥2 V Turn-Off Time 500 ns Turn-On Time 100 ns PD Pin Bias Current per Amplifier Enabled PD = 5 V 30 µA Disabled PD = 0 V −200 µA OPERATING TEMPERATURE RANGE −40 +105 °C Rev. A | Page 4 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
