AD8027 Analog Devices, AD8027 Datasheet
AD8027
Specifications of AD8027
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AD8027 Summary of contents
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... The AD8027/AD8028 have a unique feature that allows the user to select the input crossover threshold voltage through the SELECT pin. This feature controls the voltage at which the complementary transistor input pairs switch ...
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... AD8027/AD8028 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 6 Maximum Power Dissipation ..................................................... 6 ESD Caution.................................................................................. 6 Typical Performance Characteristics ............................................. 8 Theory of Operation ...................................................................... 17 Input Stage................................................................................... 17 Crossover Selection .................................................................... 17 Output Stage................................................................................ 18 DC Errors .................................................................................... 18 REVISION HISTORY 3/05—Rev Rev. C Updated Format..................................................................Universal Change to Figure 1 ........................................................................... 1 10/03—Rev Rev. B Changes to Figure 1...........................................................................1 8/03— ...
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... V CM Three-state < ±20 μA 50% of input to <10% of final − −1 I Sinking and Sourcing V = 0 MHz, SELECT = low IN 30% overshoot SELECT = low V ± Rev Page AD8027/AD8028 Min Typ Max 138 190 90/100 35 120 80 4.3 1.6 0.1 0.2 −93 ...
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... AD8027/AD8028 25° kΩ to midsupply, unless otherwise noted Table 2. Parameter DYNAMIC PERFORMANCE −3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% NOISE/DISTORTION PERFORMANCE Spurious-Free Dynamic Range (SFDR) Input Voltage Noise Input Current Noise Differential Gain Error Differential Phase Error ...
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... Three-state < ±20 μA 50% of input to <10% of final – – kΩ L Sinking and sourcing V = 0 MHz, SELECT = low IN 30% Overshoot SELECT = low V ± Rev Page AD8027/AD8028 Min Typ Max 125 180 73/100 4.3 1.6 0.15 0.20 –89 200 ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. MAXIMUM POWER DISSIPATION The maximum safe power dissipation in the AD8027/AD8028 package is limited by the associated rise in junction temperature ( the die. The plastic encapsulating the die locally reaches J the junction temperature. At approximately 150° ...
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... SOIC-8 (125°C/W), SOT-23-6 (170°C/W), and MSOP-10 (130°C/W) packages on a JEDEC standard 4-layer board. Output Short Circuit Shorting the output to ground or drawing excessive current from the AD8027/AD8028 can likely cause catastrophic failure. 2.0 1.5 1.0 MSOP-10 SOT-23-6 0 ...
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... 200mV p-p OUT 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 0 FREQUENCY (MHz) Figure 5. AD8027 Small Signal Frequency Response for Various Supplies p-p OUT 0 –1 –2 – +3V S –4 –5 –6 –7 – +5V S – ...
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... 200mV p-p OUT –1 –2 – 0pF L –4 –5 –6 –7 –8 0 FREQUENCY (MHz) Figure 10. AD8027 Small Signal Frequency Response for Various OUT p-p OUT 1 0 –1 – p-p OUT –3 –4 0 FREQUENCY (MHz) Figure 11 ...
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... AD8027/AD8028 0.3V ICM S– 200mV p-p OUT SELECT = TRI – 0.2V ICM S+ SELECT = HIGH 1 0 – 0.2V ICM S– SELECT = TRI –2 –3 – ICM –5 SELECT = HIGH OR TRI –6 –7 –8 0 FREQUENCY (MHz) Figure 16. Small Signal Frequency Response vs. ...
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... L –40 –60 –80 –100 –120 –140 10 20 03327-A-023 Figure 27. Harmonic Distortion vs. Frequency and Gain Rev Page AD8027/AD8028 24.9Ω 1.0V p-p @ 2MHz OUT SELECT = TRI SELECT = HIGH SELECT = HIGH SELECT = TRI SECOND HARMONIC: SOLID LINE THIRD HARMONIC: DASHED LINE ...
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... AD8027/AD8028 0. ± 2.5V S 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 50mV/DIV –0.20 Figure 28. Small Signal Transient Response p-p OUT 2 ±2. p-p OUT 1.0 0 –1.0 –2.0 500mV/DIV Figure 29. Large Signal Transient Response 2 p OUT V = ±2.5V 2 p-p OUT 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 50mV/DIV –2.5 Figure 30 ...
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... Rev Page AD8027/AD8028 SELECT = TRI ± + INPUT COMMON-MODE VOLTAGE (V) COUNT = 1780 SELECT HIGH ...
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... AD8027/AD8028 290 270 SELECT = HIGH 250 230 210 SELECT = TRI 190 170 150 –5 –4 –3 –2 – INPUT COMMON-MODE VOLTAGE (V) Figure 40. Input Offset Voltage vs. Input Common-Mode Voltage, V 290 V = +5V S 270 250 SELECT = HIGH 230 210 SELECT = TRI 190 170 ...
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... Figure 50. Output Disabled—Impedance vs. Frequency – –20 –40 –60 –80 95 110 125 0 03327-A-047 Rev Page AD8027/AD8028 ±5V +5V + (mA) LOAD Figure 49. Open-Loop Gain vs. Load Current SELECT = LOW 1M 10M 100M FREQUENCY (Hz) +125° +5V ...
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... AD8027/AD8028 1.5 SELECT PIN (–2.0V TO –0.5V) 1.0 OUTPUT 0 100Ω 1kΩ L –0 10kΩ L –1.0 –1 100 150 TIME (ns) Figure 52. Enable Turn-On Timing 1.5 SELECT PIN (–2.0V TO –0.5V) 1.0 OUTPUT 0.5 = 100 Ω Ω –0.5 = 10k Ω –1 = ± 2.5V – ...
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... THEORY OF OPERATION The AD8027/AD8028 are rail-to-rail input/output amplifiers designed in the Analog Devices XFCB process. The XFCB process enables the AD8027/AD8028 to run on 2 supplies with 190 MHz of bandwidth and over 100 V/μs of slew rate. The AD8027/AD8028 have 4.3 nV/√Hz of wideband noise with 17 nV/√ ...
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... The size of the discontinuity is defined as Using the crossover select feature of the AD8027/AD8028 helps to avoid this region. In the event that the region cannot be avoided, the quantity (V this effect. ...
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... Resistor value impact on the application’s voltage noise • Amplifier loading effects The AD8027/AD8028 have an input capacitance of 2 pF. This input capacitance forms a pole with the amplifier’s feedback network, destabilizing the loop. For this reason generally desirable to keep the source resistances below 500 Ω, unless some capacitance is included in the feedback network ...
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... AD8027/AD8028 PCB Layout As with all high speed op amps, achieving optimum perform- ance from the AD8027/AD8028 requires careful attention to PCB layout. Particular care must be exercised to minimize lead lengths of the bypass capacitors. Excess lead inductance can influence the frequency response and even cause high frequency oscillations ...
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... When the input stage transitions from one input differential pair to the other, there is virtually no noticeable change in the output waveform. The disable time of the AD8027/AD8028 amplifiers is load- dependent. Typical data is presented in Table 7. See Figure 52 and Figure 53 for the actual switching measurements. Table 7. DISABLE Switching Speeds ...
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... Otherwise, a phase shift can occur O in the amplifier, causing instability and oscillations. In Figure 62, the AD8027/AD8028 part is configured MHz band-pass filter. The target specifications are f and a −3 dB pass band of 500 kHz. To start the design, select f Q, C1, and R4. Then use the following equations to calculate the ...
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... BSC 3.00 BSC 1 5 PIN 1 0.50 BSC 0.95 0.85 1.10 MAX 0.75 0.15 0.27 SEATING 0.23 0.00 PLANE 0.17 0.08 COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-187BA Figure 66. 10-Lead Mini Small Outline Package [MSOP] (RM-10) Dimensions shown in millimeters Rev Page AD8027/AD8028 0.50 (0.0196) × 45° 0.25 (0.0099) 8° 0° 1.27 (0.0500) 0.40 (0.0157) 10° 0.60 4° 0.45 0° 0.30 0.80 8° 0.60 0° 0.40 ...
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... AD8027/AD8028 ORDERING GUIDE Minimum Model Ordering Quantity AD8027AR 1 AD8027AR-REEL 2,500 AD8027AR-REEL7 1,000 1 AD8027ARZ 1 1 AD8027ARZ-REEL 2,500 AD8027ARZ-REEL7 1 1,000 AD8027ART-R2 250 AD8027ART-REEL 10,000 AD8027ART-REEL7 3,000 1 AD8027ARTZ-R2 250 1 AD8027ARTZ-REEL 10,000 1 AD8027ARTZ-REEL7 3,000 AD8028AR 1 AD8028AR-REEL 2,500 AD8028AR-REEL7 1,000 1 AD8028ARZ 1 AD8028ARZ-REEL 1 2,500 1 AD8028ARZ-REEL7 1,000 AD8028ARM ...