Datasheet AD795 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Low Power, Low Noise Precision FET Op Amp |
| Pages / Page | 21 / 4 — AD795. SPECIFICATIONS. Table 1. AD795JR. Parameter. Test … |
| Revision | C |
| File Format / Size | PDF / 334 Kb |
| Document Language | English |
AD795. SPECIFICATIONS. Table 1. AD795JR. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
Text Version of Document
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AD795 SPECIFICATIONS
At +25°C and ±15 V dc, unless otherwise noted.
Table 1. AD795JR Parameter Test Conditions/Comments Min Typ Max Unit
INPUT OFFSET VOLTAGE1 Initial Offset 100 500 μV Offset TMIN − TMAX 300 1000 μV vs. Temperature 3 10 μV/°C vs. Supply (PSRR) 86 110 dB vs. Supply (PSRR) TMIN − TMAX 84 100 dB INPUT BIAS CURRENT2 Either Input VCM = 0 V 1 2 pA Either Input at TMAX = 70°C VCM = 0 V 23 nA Either Input VCM = +10 V 1 nA Offset Current VCM = 0 V 0.1 1.0 pA Offset Current at TMAX = 70°C VCM = 0 V 2 nA OPEN-LOOP GAIN VO = ±10 V RL ≥ 10 kΩ 110 120 dB RL ≥ 10 kΩ 100 108 dB INPUT VOLTAGE NOISE 0.1 Hz to 10 Hz 1.0 3.3 μV p-p f = 10 Hz 20 50 nV/√Hz f = 100 Hz 12 40 nV/√Hz f = 1 kHz 11 17 nV/√Hz f = 10 kHz 9 11 nV/√Hz INPUT CURRENT NOISE f = 0.1 Hz to 10 Hz 13 fA p-p f = 1 kHz 0.6 fA/√Hz FREQUENCY RESPONSE Unity Gain, Small Signal G = −1 1.6 MHz Full Power Response VO = 20 V p-p, RL = 2 kΩ 16 kHz Slew Rate, Unity Gain VO = 20 V p-p, RL = 2 kΩ 1 V/μs SETTLING TIME3 To 0.1% 10 V step 10 μs To 0.01% 10 V step 11 μs Overload Recovery4 50% overdrive 2 μs Total Harmonic f = 1 kHz Distortion R1 ≥ 10 kΩ, VO = 3 V rms −108 dB INPUT IMPEDANCE Differential VDIFF = ±1 V 1012||2 Ω||pF Common Mode 1014||2.2 Ω||pF INPUT VOLTAGE RANGE Differential5 ±20 V Common-Mode Voltage ±10 ±11 V Over Maximum Operating Temperature ±10 V Common-Mode Rejection Ratio VCM = ±10 V 90 110 dB TMIN − TMAX 86 100 dB OUTPUT CHARACTERISTICS Voltage RL ≥ 2 kΩ VS − 4 VS − 2.5 V TMIN − TMAX VS − 4 V Current VOUT = ±10 V ±5 ±10 mA Short circuit ±15 mA Rev. C | Page 3 of 20 Document Outline Features Applications Connection Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Minimizing Input Current Circuit Board Notes Offset Nulling AC Response with High Value Source and Feedback Resistance Overload Issues Input Protection Preamplifier Applications Minimizing Noise Contributions Using a T Network A pH Probe Buffer Amplifier Outline Dimensions Ordering Guide
AD795 SPECIFICATIONS
At +25°C and ±15 V dc, unless otherwise noted.
Table 1. AD795JR Parameter Test Conditions/Comments Min Typ Max Unit
INPUT OFFSET VOLTAGE1 Initial Offset 100 500 μV Offset TMIN − TMAX 300 1000 μV vs. Temperature 3 10 μV/°C vs. Supply (PSRR) 86 110 dB vs. Supply (PSRR) TMIN − TMAX 84 100 dB INPUT BIAS CURRENT2 Either Input VCM = 0 V 1 2 pA Either Input at TMAX = 70°C VCM = 0 V 23 nA Either Input VCM = +10 V 1 nA Offset Current VCM = 0 V 0.1 1.0 pA Offset Current at TMAX = 70°C VCM = 0 V 2 nA OPEN-LOOP GAIN VO = ±10 V RL ≥ 10 kΩ 110 120 dB RL ≥ 10 kΩ 100 108 dB INPUT VOLTAGE NOISE 0.1 Hz to 10 Hz 1.0 3.3 μV p-p f = 10 Hz 20 50 nV/√Hz f = 100 Hz 12 40 nV/√Hz f = 1 kHz 11 17 nV/√Hz f = 10 kHz 9 11 nV/√Hz INPUT CURRENT NOISE f = 0.1 Hz to 10 Hz 13 fA p-p f = 1 kHz 0.6 fA/√Hz FREQUENCY RESPONSE Unity Gain, Small Signal G = −1 1.6 MHz Full Power Response VO = 20 V p-p, RL = 2 kΩ 16 kHz Slew Rate, Unity Gain VO = 20 V p-p, RL = 2 kΩ 1 V/μs SETTLING TIME3 To 0.1% 10 V step 10 μs To 0.01% 10 V step 11 μs Overload Recovery4 50% overdrive 2 μs Total Harmonic f = 1 kHz Distortion R1 ≥ 10 kΩ, VO = 3 V rms −108 dB INPUT IMPEDANCE Differential VDIFF = ±1 V 1012||2 Ω||pF Common Mode 1014||2.2 Ω||pF INPUT VOLTAGE RANGE Differential5 ±20 V Common-Mode Voltage ±10 ±11 V Over Maximum Operating Temperature ±10 V Common-Mode Rejection Ratio VCM = ±10 V 90 110 dB TMIN − TMAX 86 100 dB OUTPUT CHARACTERISTICS Voltage RL ≥ 2 kΩ VS − 4 VS − 2.5 V TMIN − TMAX VS − 4 V Current VOUT = ±10 V ±5 ±10 mA Short circuit ±15 mA Rev. C | Page 3 of 20 Document Outline Features Applications Connection Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Minimizing Input Current Circuit Board Notes Offset Nulling AC Response with High Value Source and Feedback Resistance Overload Issues Input Protection Preamplifier Applications Minimizing Noise Contributions Using a T Network A pH Probe Buffer Amplifier Outline Dimensions Ordering Guide
