AD8682 Analog Devices, AD8682 Datasheet
AD8682
Specifications of AD8682
Available stocks
Related parts for AD8682
AD8682 Summary of contents
Page 1
... Portable medical instrumentation Supply current monitoring GENERAL DESCRIPTION The AD8682 and AD8684 are dual and quad low power, precision (1 mV) JFET amplifiers featuring excellent speed at low supply currents. The slew rate is typically 9 V/μs with a supply current under 250 μA per amplifier. These unity-gain stable amplifiers have a typical gain bandwidth of 3 ...
Page 2
... AD8682/AD8684 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 REVISION HISTORY 7/08—Rev Rev. B Changes to Phase Inversion Section ............................................ 10 Deleted Figure 33 ............................................................................ 10 Added Figure 33 and Figure 34..................................................... 10 Updated Outline Dimensions ....................................................... 12 7/07—Rev Rev. A Change to Figure 21 ...
Page 3
... V, −40°C ≤ T ≤ +85° kΩ distortion 0.01% S GBP Ø p-p 0 kHz Rev Page AD8682/AD8684 Min Typ Max 0.35 1 2 125 20 100 −11 +15 ≤ +85° 13.5 13.9 −13.9 −13 − ...
Page 4
... AD8682/AD8684 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage Input Voltage 1 Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) 1 For supply voltages less than ±18 V, the absolute maximum input voltage is equal to the supply voltage. ...
Page 5
... TYPICAL PERFORMANCE CHARACTERISTICS –20 –40 1k 10k 100k FREQUENCY (Hz) Figure 3. AD8682 Open-Loop Gain and Phase vs. Frequency ±15V 10kΩ –75 –50 – TEMPERATURE (°C) Figure 4. AD8682 Open-Loop Gain vs. Temperature ±15V 2kΩ ...
Page 6
... COMMON-MODE VOLTAGE (V) Figure 10. Input Bias Current vs. Common-Mode Voltage 480 T = 25°C A 475 470 465 460 455 450 0 ±5 ±10 SUPPLY VOLTAGE (V) Figure 11. AD8682 Supply Current vs. Supply Voltage V = ±15V 25° 10k ±15 ±20 Rev Page 25°C ...
Page 7
... FREQUENCY (Hz) Figure 16. AD8682 PSRR vs. Frequency SINK 8 SOURCE –50 – TEMPERATURE (°C) Figure 17. AD8682 Short-Circuit Current vs. Temperature 100 10k Figure 18. Maximum Output Swing vs. Frequency 140 120 100 –20 –40 –60 ...
Page 8
... AD8682/AD8684 400 360 320 280 240 200 160 120 TCV (µV/°C) OS Figure 21. AD8682 TCVOS Distribution SOIC_N Package –50 – TEMPERATURE (°C) Figure 22. AD8684 Open-Loop Gain vs. Temperature 100 VCL 40 30 ...
Page 9
... Figure 31. AD8684 TCVOS Distribution Package V = ±15V S 10M Rev Page AD8682/AD8684 V = ±15V 25°C A 100 × AD8684 (400 OP AMPS) –0.4 –0.2 0 0.2 0.4 0.6 0.8 V (µV) OS Figure 30. AD8684 VOS Distribution Package V = ± ...
Page 10
... AD8682/AD8684 APPLICATIONS INFORMATION The AD8682 and AD8684 are dual and quad JFET op amps that are optimized for high speed at low power. This combination makes these amplifiers excellent choices for battery-powered or low power applications that require above average performance. Applications benefiting from this performance combination include telecommunications, geophysical exploration, portable medical equipment, and navigational instrumentation ...
Page 11
... R1 1/4 2kΩ 1/4 AD8684 1/4 DAC8408 AD8684 HIGH PASS R3 2kΩ DAC 2 R2 1/4 2kΩ 1/4 AD8684 1/4 DAC8408 AD8684 Figure 35. Programmable State Variable Filter Rev Page AD8682/AD8684 ⎛ ⎞ ⎜ ⎟ ⎝ ⎠ 2π R1C1 256 ⎛ ⎞ ⎜ ⎟ ⎝ ⎠ ...
Page 12
... AD8682/AD8684 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012-A A CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN ...
Page 13
... Dimensions shown in millimeters and (inches) 5.10 5.00 4. 4.50 6.40 4.40 BSC 4. PIN 1 0.65 BSC 1.05 1.20 1.00 0.20 MAX 0.80 0.09 0.15 SEATING 0.05 0.30 PLANE COPLANARITY 0.19 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 39. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters Rev Page AD8682/AD8684 0.50 (0.0197) 45° 0.25 (0.0098) 8° 0° 1.27 (0.0500) 0.25 (0.0098) 0.40 (0.0157) 0.17 (0.0067) 0.75 8° 0.60 0° 0.45 ...
Page 14
... ORDERING GUIDE Model Temperature Range AD8682ARZ 1 −40°C to +85°C 1 AD8682ARZ-REEL −40°C to +85°C 1 AD8682ARZ-REEL7 −40°C to +85°C 1 AD8682ARMZ-R2 −40°C to +85°C 1 AD8682ARMZ-REEL −40°C to +85°C 1 AD8684ARZ −40°C to +85°C 1 AD8684ARZ-REEL −40°C to +85°C 1 AD8684ARZ-REEL7 − ...
Page 15
... NOTES Rev Page AD8682/AD8684 ...
Page 16
... AD8682/AD8684 NOTES ©2006–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06278-0-7/08(B) Rev Page ...