AD823 Analog Devices, AD823 Datasheet
AD823
Specifications of AD823
Available stocks
Related parts for AD823
AD823 Summary of contents
Page 1
... Gigaohm. It provides 16 MHz, −3 dB bandwidth, −108 dB THD @ 20 kHz, and a 22 V/µs slew rate with a low supply current of 2.6 mA per amplifier. The AD823 drives up to 500 pF of direct capacitive load as a follower and provides an output current of 15 mA, 0.5 V from the supply rails. This allows the amplifier to handle a wide range of load conditions ...
Page 2
... AD823 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Connection Diagram ....................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution .................................................................................. 6 REVISION HISTORY 11/11—Rev Rev. E Changes to Theory of Operation Section .................................... 13 Changes to Ordering Guide .......................................................... 19 6/10—Rev Rev. D Changes to Figure 34 ...................................................................... 11 Changes to Figure 36 ...................................................................... 13 5/10—Rev Rev. C Changes to Table 4 ............................................................................ 6 2/07— ...
Page 3
... 0 4.5 V OUT Sourcing to 2.5 V Sinking to 2 total MIN MAX MIN MAX Rev Page AD823 Min Typ Max 320 350 16 1 −108 −105 −63 0.2 0.8 0.3 2 0.5 ...
Page 4
... AD823 25° +3 kΩ to 1.65 V, unless otherwise noted Table 2. Parameter DYNAMIC PERFORMANCE −3 dB Bandwidth, V ≤ 0.2 V p-p O Full Power Response Slew Rate Settling Time to 0.1% to 0.01% NOISE/DISTORTION PERFORMANCE Input Voltage Noise Input Current Noise Harmonic Distortion Crosstalk kHz MHz ...
Page 5
... AD823 Unit MHz MHz V/µ nV/√Hz fA/√Hz dBc µV/° V/mV V/mV V Ω ...
Page 6
... AD823 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage Internal Power Dissipation PDIP (N) SOIC (R) Input Voltage (Common Mode) Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range N, R Operating Temperature Range Lead Temperature Range (Soldering, 10 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...
Page 7
... Figure 8. Typical Distribution of Input Bias Current + 100 100 TEMPERATURE (°C) Figure 9. Input Bias Current vs. Temperature 100 10 1 0.1 –16 –12 –8 – COMMON-MODE VOLTAGE (V) Figure 10. Input Bias Current vs. Common-Mode Voltage AD823 +V = +5V S 317 UNITS σ = 0.4pA 125 V = ±15V ...
Page 8
... AD823 110 V = ±2.5V S 100 100 10k LOAD RESISTANCE (Ω) Figure 11. Open-Loop Gain vs. Load Resistance 1000 R = 10kΩ L 100 = 1kΩ 100Ω 0.1 –2.5 –2.0 –1.5 –1.0 –0.5 0 0.5 OUTPUT VOLTAGE (V) Figure 12. Open-Loop Gain vs. Output Voltage, V –40 –50 –60 ...
Page 9
... Figure 20. Common-Mode Rejection Ratio vs. Frequency + – 25°C 0 25°C 0.01 0 LOAD CURRENT (mA) Figure 21. Output Saturation Voltage vs. Load Current 10 +125°C 8 +25°C 6 –55° SUPPLY VOLTAGE (±V) Figure 22. Quiescent Current vs. Supply Voltage AD823 1M 10M 100 20 ...
Page 10
... AD823 100 +PSRR –PSRR 100 1k 10k 100k FREQUENCY (Hz) Figure 23. Power Supply Rejection vs. Frequency + + 10k 100k 1M FREQUENCY (Hz) Figure 24. Large Signal Frequency Response 500mV 100kΩ 3V 100kΩ 2.9V p-p IN 50Ω 100kΩ Figure 25. Output Swing, +V ...
Page 11
... 50pF + 500mV GND Figure 33. Pulse Response 2kΩ 470pF + 500mV 200ns Figure 34. Pulse Response + AD823 R = 100kΩ 50pF + 200µs 100ns = 470 pF L ...
Page 12
... AD823 R = 100kΩ 50pF ±15V +10V –10V 5V Figure 35. Pulse Response ± 500ns Rev Page Data Sheet ...
Page 13
... The AD823 can drive 20 mA with the outputs within 0 the supply rails. The AD823 also offers outstanding precision for a high speed op amp. Input offset voltages maximum and offset drift of 2 µ ...
Page 14
... In fact, the AD823 has excellent cap-load drive capability for a high frequency op amp. Figure 34 shows the AD823 connected as a follower while driving 470 pF direct capacitive load. Under these conditions, the phase margin is approximately 20°. If greater phase margin ...
Page 15
... This is illustrated in Figure 7. A current limiting resistor should be used in series with the input of the AD823 if there is a possibility of the input voltage exceeding the positive supply by more than 300 mV input voltage is applied to the AD823 when ±V amplifier becomes damaged if left in that condition for more than 10 seconds kΩ ...
Page 16
... The circuit was tested with a 500 kHz sine wave input that was heavily low-pass filtered (60 dB) to minimize the harmonic content at the input to the AD823. The digital output of the AD1672 was analyzed by performing a fast Fourier transform (FFT). During the testing, it was observed that at 500 kHz, the output ...
Page 17
... Data Sheet Second-Order Low-Pass Filter Figure 43 depicts the AD823 configured as a second-order Butterworth low-pass filter. With the values as shown, the corner frequency equals 200 kHz. Component selection is shown in the following equations User Selected (Typical Values: 10 kΩ to 100 kΩ) ...
Page 18
... AD823 OUTLINE DIMENSIONS 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS. 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0 ...
Page 19
... AD823AR-REEL −40°C to +85°C AD823AR-REEL7 −40°C to +85°C AD823ARZ −40°C to +85°C AD823ARZ-RL −40°C to +85°C AD823ARZ-R7 −40°C to +85°C AD823AR-EBZ RoHS Compliant Part. Package Description 8-Lead PDIP 8-Lead SOIC_N 8-Lead SOIC_N, 13” Tape and Reel 8-Lead SOIC_N, 7” ...
Page 20
... AD823 NOTES ©1995–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00901-0-11/11(E) Rev Page Data Sheet ...