AD8651 Analog Devices, AD8651 Datasheet
AD8651
Specifications of AD8651
Available stocks
Related parts for AD8651
AD8651 Summary of contents
Page 1
... TOP VIEW OUT 3 6 (Not to Scale) – CONNECT Figure 1. 8-Lead MSOP (RM- AD8651 + – +IN OUT 3 TOP VIEW 6 (Not to Scale) – CONNECT Figure 3. 8-Lead SOIC_N (R-8) The AD865x family features the newest generation of DigiTrim® ...
Page 2
... AD8651/AD8652 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Specifications..................................................................................... 3 Electrical Characteristics............................................................. 3 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Typical Performance Characteristics ............................................. 6 Applications..................................................................................... 14 Theory of Operation .................................................................. 14 Rail-to-Rail Output Stage...................................................... 14 Rail-to-Rail Input Stage ......................................................... 14 REVISION HISTORY 8/06—Rev Rev. C Changes to Figure 1 to Figure 4 ...................................................... 1 Changes to Figure 7 and Figure 9 ...
Page 3
... GBP ± step + V × 1. THD + 600 Ω kHz kHz 100 kHz kHz n Rev Page AD8651/AD8652 Min Typ 100 ≤ 2 ≤ 2 –0 < +2 < +2 ...
Page 4
... Large Signal Voltage Gain OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit Output Current POWER SUPPLY Power Supply Rejection Ratio Supply Current AD8651 AD8652 INPUT CAPACITANCE Differential Common Mode DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Settling Time, 0.01% Overload Recovery Time ...
Page 5
... GND 0 Table 4. Thermal Resistance ±6.0 V Package Type Indefinite 8-Lead MSOP (RM) 4000 V 8-Lead SOIC_N (R) −65°C to +150°C −40°C to +125°C −65°C to +150°C 300°C Rev Page AD8651/AD8652 θ θ Unit JA JC 210 45 °C/W 158 43 °C/W ...
Page 6
... AD8651/AD8652 TYPICAL PERFORMANCE CHARACTERISTICS (µV) OS Figure 5. Input Offset Voltage Distribution 300 V = ±2. 200 100 0 –100 –200 –300 – TEMPERATURE (°C) Figure 6. Input Offset Voltage vs. Temperature TCV (µV/°C) OS Figure 7 ...
Page 7
... 110 250µA L 105 100 95 90 150 –50 Rev Page AD8651/AD8652 = 250µ 100 TEMPERATURE (° ±2.5V S 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 15. CMRR vs. Frequency V = ±2. 100 TEMPERATURE (°C) Figure 16. CMRR vs. Temperature ...
Page 8
... AD8651/AD8652 100 – TEMPERATURE (°C) Figure 17. CMRR vs. Temperature 100 80 +PSRR 60 –PSRR 100 1k 10k 100k FREQUENCY (Hz) Figure 18. PSRR vs. Frequency 100 – TEMPERATURE (°C) Figure 19. PSRR vs. Temperature 100 10 1 100 150 ±2. ...
Page 9
... V = ±2. 1kΩ 100 150 100k V = ±2.5V S 200 250 Rev Page AD8651/AD8652 V = ±2. 1MΩ 47pF 100 50k 500k 5M 50M FREQUENCY (Hz) Figure 26. Closed-Loop Gain vs. Frequency 2. 10M FREQUENCY (Hz) Figure 27 ...
Page 10
... AD8651/AD8652 TIME (10µs/DIV) Figure 29. Small Signal Response ±2. 200mV – CAPACITANCE (pF) Figure 30. Small Signal Overshoot vs. Load Capacitance 2. –200mV TIME (200ns/DIV) Figure 31. Negative Overload Recovery Time V = ±2. 200mV – ...
Page 11
... S 2.696 2.695 2.694 2.693 2.692 2.691 2.690 3 –50 Figure 39. Output Voltage Swing High vs. Temperature 3.00 2.50 2.00 1.50 1.00 0.50 0 150 –50 Figure 40. Output Voltage Swing Low vs. Temperature Rev Page AD8651/AD8652 V = ±1.35V CURRENT LOAD (mA 2. 250µ 100 150 TEMPERATURE (° ...
Page 12
... AD8651/AD8652 TIME (200µs/DIV) Figure 41. No Phase Reversal TIME (100µs/DIV) Figure 42. Large Signal Response TIME (10µs/DIV) Figure 43. Small Signal Response ±1.35V Figure 44. Small Signal Overshoot vs. Load Capacitance V = ±1.35V ...
Page 13
... V = ±1.35V S –20 –45 –40 –60 –90 –80 –100 –135 –120 –140 –180 100 10M 100M Rev Page AD8651/AD8652 V = ±1.35V 1kΩ 100 TEMPERATURE (°C) Figure 50. Open-Loop Gain vs. Temperature V = ±1.35V 1MΩ 47pF 100 ...
Page 14
... AD8651/AD8652 APPLICATIONS THEORY OF OPERATION The AD865x family consists of voltage feedback, rail-to-rail input and output precision CMOS amplifiers that operate from 2 5 power supply voltage. These amplifiers use Analog Devices, Inc. DigiTrim technology to achieve a higher degree of precision than is available from most CMOS amplifiers ...
Page 15
... Another effect that can cause leakage currents is the charge absorption of the insulator material itself. Minimizing the amount of material between the input leads and the guard ring helps to reduce the absorption. Also, low absorption materials, such as Teflon® or ceramic, may be necessary in some instances. Rev Page AD8651/AD8652 ...
Page 16
... Ω and were chosen AD865x R – – 200mV S – V Figure 57. Snubber Network 0 0.05 V OUT 0.02 0.01 0.005 0.002 OPA350 0.001 AD8651 20 50 100 500 1k 2k FREQUENCY (Hz) Figure 58. Total Harmonic Distortion V OUT +3.5V/–1.5V = 2.0V p-p 5k 20k ...
Page 17
... Figure 60. Frequency Response of AD865x Driving a 16-Bit ADC V OUT 47pF 1µF Table 6. Data Acquisition Solution of Figure 60 Parameter THD + N SFDR 2nd Harmonics 3rd Harmonics = 250kSPS = 45kHz 80 90 100 110 120 Rev Page AD8651/AD8652 5V 10kΩ 33Ω 10kΩ AD865x 2 – V – 2.7nF 1kΩ ...
Page 18
... AD8651/AD8652 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 2. PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 0.15 0.38 0.23 0.00 0.22 0.08 COPLANARITY SEATING 0.10 PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 62. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 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° ...
Page 19
... AD8651ARMZ-REEL –40°C to +125°C 1 AD8651ARMZ-R2 –40°C to +125°C AD8651AR –40°C to +125°C AD8651AR-REEL –40°C to +125°C AD8651AR-REEL7 –40°C to +125°C AD8651ARZ 1 –40°C to +125°C 1 AD8651ARZ-REEL –40°C to +125°C 1 AD8651ARZ-REEL7 –40°C to +125°C 1 AD8652ARMZ-R2 – ...
Page 20
... AD8651/AD8652 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C03301-0-8/06(C) Rev Page ...