Datasheet AD844 (Analog Devices) - 3

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Data Sheet AD844 SPECIFICATIONS
TA = 25°C and VS = ±15 V dc, unless otherwise noted.
Table 1. AD844J/AD844A AD844B AD844S Parameter Conditions Min Typ Max Min Typ Max Min Typ Max Unit
INPUT OFFSET VOLTAGE1 50 300 50 150 50 300 μV TMIN to TMAX 75 500 75 200 125 500 μV vs. Temperature 1 1 5 1 5 μV/°C vs. Supply 5 V to 18 V Initial 4 20 4 10 4 20 μV/V TMIN to TMAX 4 4 10 4 20 μV/V vs. Common Mode VCM = ±10 V Initial 10 35 10 20 10 35 μV/V TMIN to TMAX 10 10 20 10 35 μV/V INPUT BIAS CURRENT Negative Input Bias Current1 200 450 150 250 200 450 nA TMIN to TMAX 800 1500 750 1100 1900 2500 nA vs. Temperature 9 9 15 20 30 nA/°C vs. Supply 5 V to 18 V Initial 175 250 175 200 175 250 nA/V TMIN to TMAX 220 220 240 220 300 nA/V vs. Common Mode VCM = ±10 V Initial 90 160 90 110 90 160 nA/V TMIN to TMAX 110 110 150 120 200 nA/V Positive Input Bias Current1 150 400 100 200 100 400 nA TMIN to TMAX 350 700 300 500 800 1300 nA vs. Temperature 3 3 7 7 15 nA/°C vs. Supply 5 V to 18 V Initial 80 150 80 100 80 150 nA/V TMIN to TMAX 100 100 120 120 200 nA/V vs. Common Mode VCM = ±10 V Initial 90 150 90 120 90 150 nA/V TMIN to TMAX 130 130 190 140 200 nA/V INPUT CHARACTERISTICS Input Resistance Negative Input 50 65 50 65 50 65 Ω Positive Input 7 10 7 10 7 10 MΩ Input Capacitance Negative Input 2 2 2 pF Positive Input 2 2 2 pF Input Common-Mode Voltage ±10 ±10 ±10 V Range INPUT VOLTAGE NOISE f ≥ 1 kHz 2 2 2 nV/√Hz INPUT CURRENT NOISE Negative Input f ≥ 1 kHz 10 10 10 pV/√Hz Positive Input f ≥ 1 kHz 12 12 12 pV/√Hz OPEN-LOOP TRANSRESISTANCE VOUT = ±10 V RL = 500 Ω 2.2 3.0 2.8 3.0 2.2 3.0 MΩ TMIN to TMAX 1.3 2.0 1.6 2.0 1.3 1.6 MΩ Transcapacitance 4.5 4.5 4.5 pF DIFFERENTIAL GAIN ERROR2 f = 4.4 MHz 0.03 0.03 0.03 % DIFFERENTIAL PHASE ERROR2 f = 4.4 MHz 0.16 0.16 0.16 Degree Rev. G | Page 3 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAMS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS METALLIZATION PHOTOGRAPH ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS INVERTING GAIN-OF-1 AC CHARACTERISTICS INVERTING GAIN-OF-10 AC CHARACTERISTICS INVERTING GAIN-OF-10 PULSE RESPONSE NONINVERTING GAIN-OF-10 AC CHARACTERISTICS UNDERSTANDING THE AD844 OPEN-LOOP BEHAVIOR RESPONSE AS AN INVERTING AMPLIFIER RESPONSE AS AN I-V CONVERTER CIRCUIT DESCRIPTION OF THE AD844 RESPONSE AS A NONINVERTING AMPLIFIER NONINVERTING GAIN OF 100 USING THE AD844 BOARD LAYOUT INPUT IMPEDANCE DRIVING LARGE CAPACITIVE LOADS SETTLING TIME DC ERROR CALCULATION NOISE VIDEO CABLE DRIVER USING ±5 V SUPPLIES HIGH SPEED DAC BUFFER 20 MHZ VARIABLE GAIN AMPLIFIER OUTLINE DIMENSIONS ORDERING GUIDE