Datasheet AD8476 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Low Power, Unity Gain Fully Differential Amplifier & ADC Driver |
| Pages / Page | 24 / 3 — Data Sheet. AD8476. SPECIFICATIONS. Table 1. B Grade. A Grade. Parameter. … |
| Revision | B |
| File Format / Size | PDF / 516 Kb |
| Document Language | English |
Data Sheet. AD8476. SPECIFICATIONS. Table 1. B Grade. A Grade. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
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Data Sheet AD8476 SPECIFICATIONS
VS = +5 to ±5 V, VOCM = midsupply, VOUT = V+OUT − V−OUT, RL = 2 kΩ differential, referred to output (RTO), TA = 25°C, unless otherwise noted.
Table 1. B Grade A Grade Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth VOUT = 200 mV p-p 6 6 MHz −3 dB Large Signal Bandwidth VOUT = 2 V p-p 1 1 MHz Slew Rate VOUT = 2 V step 10 10 V/µs Settling Time to 0.01% VOUT = 2 V step 1.0 1.0 µs Settling Time to 0.001% VOUT = 2 V step 1.6 1.6 µs NOISE/DISTORTION1 THD + N f = 10 kHz, VOUT = 2 V p-p, −102 −102 dB 22 kHz filter HD2 f = 10 kHz, VOUT = 2 V p-p −126 −126 dB HD3 f = 10 kHz, VOUT = 2 V p-p −128 −128 dB IMD3 f1 = 95 kHz, f2 = 105 kHz, −82 −82 dBc VOUT = 2 V p-p Output Voltage Noise f = 0.1 Hz to 10 Hz 6 6 µV p-p Spectral Noise Density f = 10 kHz 39 39 nV/√Hz GAIN 1 1 V/V Gain Error RL = ∞ 0.02 0.04 % Gain Drift −40°C ≤ TA ≤ +125°C 1 1 ppm/°C Gain Nonlinearity VOUT = 4 V p-p 5 5 ppm OFFSET AND CMRR Differential Offset2 50 200 50 500 µV vs. Temperature −40°C ≤ TA ≤ +125°C 900 900 µV Average TC −40°C ≤ TA ≤ +125°C 1 4 1 4 µV/°C vs. Power Supply (PSRR) VS = ±2.5 V to ±9 V 90 90 dB Common-Mode Offset2 50 50 µV Common-Mode Rejection VIN,cm = ±5 V 90 80 dB Ratio INPUT CHARACTERISTICS Input Voltage Range3 Differential input −VS + 0.05 +VS − 0.05 −VS + 0.05 +VS − 0.05 V Single-ended input 2(−VS + 0.05) 2(+V − 0.05) 2(−VS + 0.05) 2(+VS − 0.05) V Impedance4 Vcm = VS/2 Single-Ended Input 13.3 13.3 kΩ Differential Input 20 20 kΩ Common-Mode Input 10 10 kΩ OUTPUT CHARACTERISTICS Output Swing VS = +5 V −VS + 0.125 +VS − 0.14 −VS + 0.125 +VS − 0.14 VS = ±5 V −VS + 0.155 +VS − 0.18 −VS + 0.155 +VS − 0.18 Output Balance Error ∆VOUT,cm/∆VOUT,dm 90 80 dB Output Impedance 0.1 0.1 Ω Capacitive Load Per output 20 20 pF Short-Circuit Current Limit 35 35 mA VOCM CHARACTERISTICS VOCM Input Voltage Range −VS + 1 +VS − 1 −VS + 1 +VS − 1 V VOCM Input Impedance 500 500 kΩ VOCM Gain Error 0.05 0.05 % Rev. B | Page 3 of 24 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Overview Circuit Information Output Common-Mode Voltage (VOCM) DC Precision Input Voltage Range Driving the AD8476 Power Supplies Applications Information Typical Configuration Single-Ended-to-Differential Conversion Setting the Output Common-Mode Voltage Low Power ADC Driving Outline Dimensions Ordering Guide
Data Sheet AD8476 SPECIFICATIONS
VS = +5 to ±5 V, VOCM = midsupply, VOUT = V+OUT − V−OUT, RL = 2 kΩ differential, referred to output (RTO), TA = 25°C, unless otherwise noted.
Table 1. B Grade A Grade Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth VOUT = 200 mV p-p 6 6 MHz −3 dB Large Signal Bandwidth VOUT = 2 V p-p 1 1 MHz Slew Rate VOUT = 2 V step 10 10 V/µs Settling Time to 0.01% VOUT = 2 V step 1.0 1.0 µs Settling Time to 0.001% VOUT = 2 V step 1.6 1.6 µs NOISE/DISTORTION1 THD + N f = 10 kHz, VOUT = 2 V p-p, −102 −102 dB 22 kHz filter HD2 f = 10 kHz, VOUT = 2 V p-p −126 −126 dB HD3 f = 10 kHz, VOUT = 2 V p-p −128 −128 dB IMD3 f1 = 95 kHz, f2 = 105 kHz, −82 −82 dBc VOUT = 2 V p-p Output Voltage Noise f = 0.1 Hz to 10 Hz 6 6 µV p-p Spectral Noise Density f = 10 kHz 39 39 nV/√Hz GAIN 1 1 V/V Gain Error RL = ∞ 0.02 0.04 % Gain Drift −40°C ≤ TA ≤ +125°C 1 1 ppm/°C Gain Nonlinearity VOUT = 4 V p-p 5 5 ppm OFFSET AND CMRR Differential Offset2 50 200 50 500 µV vs. Temperature −40°C ≤ TA ≤ +125°C 900 900 µV Average TC −40°C ≤ TA ≤ +125°C 1 4 1 4 µV/°C vs. Power Supply (PSRR) VS = ±2.5 V to ±9 V 90 90 dB Common-Mode Offset2 50 50 µV Common-Mode Rejection VIN,cm = ±5 V 90 80 dB Ratio INPUT CHARACTERISTICS Input Voltage Range3 Differential input −VS + 0.05 +VS − 0.05 −VS + 0.05 +VS − 0.05 V Single-ended input 2(−VS + 0.05) 2(+V − 0.05) 2(−VS + 0.05) 2(+VS − 0.05) V Impedance4 Vcm = VS/2 Single-Ended Input 13.3 13.3 kΩ Differential Input 20 20 kΩ Common-Mode Input 10 10 kΩ OUTPUT CHARACTERISTICS Output Swing VS = +5 V −VS + 0.125 +VS − 0.14 −VS + 0.125 +VS − 0.14 VS = ±5 V −VS + 0.155 +VS − 0.18 −VS + 0.155 +VS − 0.18 Output Balance Error ∆VOUT,cm/∆VOUT,dm 90 80 dB Output Impedance 0.1 0.1 Ω Capacitive Load Per output 20 20 pF Short-Circuit Current Limit 35 35 mA VOCM CHARACTERISTICS VOCM Input Voltage Range −VS + 1 +VS − 1 −VS + 1 +VS − 1 V VOCM Input Impedance 500 500 kΩ VOCM Gain Error 0.05 0.05 % Rev. B | Page 3 of 24 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Overview Circuit Information Output Common-Mode Voltage (VOCM) DC Precision Input Voltage Range Driving the AD8476 Power Supplies Applications Information Typical Configuration Single-Ended-to-Differential Conversion Setting the Output Common-Mode Voltage Low Power ADC Driving Outline Dimensions Ordering Guide
