AD8000

AD8000 (Rev.D)

Document overview

• Manufacturer or author: Analog Devices, Inc.
• PDF pages: 19

Technical content

1.5 GHz Ultrahigh Speed Op Amp

Rev. D DOCUMENT FEEDBACK TECHNICAL SUPPORT Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. All Analog Devices products contained herein are subject to release and availability.

FEATURES

►High speed ►1.5 GHz, −3 dB bandwidth (G = +1) ►650 MHz, full power bandwidth (G = +2, VO = 2 V p-p) ►Slew rate: 4100 V/µs ►0.1% settling time: 12 ns ►Excellent video specifications ►0.1 dB flatness: 170 MHz ►Differential gain: 0.02% ►Differential phase: 0.01° ►Output overdrive recovery: 22 ns ►Low noise: 1.6 nV/√Hz input voltage noise ►Low distortion over wide bandwidth ►75 dBc SFDR at 20 MHz ►62 dBc SFDR at 50 MHz ►Input offset voltage: 1 mV typical ►High output current: 100 mA ►Wide supply voltage range: 4.5 V to 12 V ►Supply current: 13.5 mA ►Power-down mode

APPLICATIONS

►Professional video ►High speed instrumentation ►Video switching ►IF/RF gain stage ►CCD imaging GENERAL DESCRIPTION The AD8000 is an ultrahigh speed, high performance, current feed- back amplifier. Using Analog Devices, Inc., proprietary eXtra Fast Complementary Bipolar (XFCB) process, the amplifier can achieve a small signal bandwidth of 1.5 GHz and a slew rate of 4100 V/µs. The AD8000 has low spurious-free dynamic range (SFDR) of 75 dBc at 20 MHz and input voltage noise of 1.6 nV/√Hz. The AD8000 can drive over 100 mA of load current with minimal distortion. The amplifier can operate on +5 V to ±6 V. These specifications make the AD8000 ideal for a variety of applications, including high speed instrumentation. With a differential gain of 0.02%, differential phase of 0.01°, and 0.1 dB flatness out to 170 MHz, the AD8000 has excellent video specifications, which ensure that even the most demanding video systems maintain excellent fidelity. The AD8000 power-down mode reduces the supply current to 1.3 mA. The amplifier is available in a tiny 8-lead LFCSP package, as well as in an 8-lead SOIC package. The AD8000 is rated to work over the extended industrial temperature range (−40°C to +125°C). A triple version of the AD8000 (AD8003) is underdevelopment. Figure 1. Large Signal Frequency Response

analog.com Rev. D | 2 of 19

REVISION HISTORY

6/2025—Rev. C to Rev. D

analog.com Rev. D | 4 of 19 SPECIFICATIONS WITH ±5 V SUPPLY At TA = 25°C, VS = ±5 V, RL = 150 Ω, Gain = +2, RF = RG = 432 Ω, unless otherwise noted. Connect the exposed paddle to ground. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE −3 dB Bandwidth G = +1, VO = 0.2 V p-p, SOIC/LFCSP 1580/1350 MHz G = +2, VO = 2 V p-p, SOIC/LFCSP 650/610 MHz Bandwidth for 0.1 dB Flatness VO = 2 V p-p, SOIC/LFCSP 190/170 MHz Slew Rate G = +2, VO = 4 V step 4100 V/µs Settling Time to 0.1% G = +2, VO = 2 V step 12 ns NOISE/HARMONIC PERFORMANCE Second/Third Harmonic VO = 2 V p-p, f = 5 MHz, LFCSP only 86/89 dBc Second/Third Harmonic VO = 2 V p-p, f = 20 MHz, LFCSP only 75/79 dBc Input Voltage Noise f = 100 kHz 1.6 nV/√Hz Input Current Noise f = 100 kHz, −IN 26 pA/√Hz f = 100 kHz, +IN 3.4 pA/√Hz Differential Gain Error NTSC, G = +2 0.02 % Differential Phase Error NTSC, G = +2 0.01 Degree DC PERFORMANCE Input Offset Voltage 1 10 mV Input Offset Voltage Drift 11 µV/°C Input Bias Current (Enabled) +IB −5 +4 µA −IB −3 +45 µA Transimpedance 570 890 1600 kΩ INPUT CHARACTERISTICS Noninverting Input Impedance 2/3.6 MΩ/pF Input Common-Mode Voltage Range −3.5 to +3.5 V Common-Mode Rejection Ratio VCM = ±2.5 V −52 −54 −56 dB Overdrive Recovery G = +1, f = 1 MHz, triangle wave 30 ns POWER DOWN PIN Power-Down Input Voltage Power-down < +VS – 3.1 V Enabled > +VS – 1.9 V Turn-Off Time 50% of power-down voltage to 10% of VOUT final, VIN = 0.3 V p-p 150 ns Turn-On Time 50% of power-down voltage to 90% of VOUT final, VIN = 0.3 V p-p 300 ns Input Bias Current Enabled −1.1 +0.17 +1.4 µA Power-Down −300 −235 −160 µA OUTPUT CHARACTERISTICS Output Voltage Swing RL = 100 Ω ±3.7 ±3.9 V Output Voltage Swing RL = 1 kΩ ±3.9 ±4.1 V Linear Output Current VO = 2 V p-p, second HD < −50 dBc 100 mA Overdrive Recovery G = + 2, f = 1 MHz, triangle wave 45 ns G = +2, VIN = 2.5 V to 0 V step 22 ns POWER SUPPLY Operating Range 4.5 12 V Quiescent Current 12.7 13.5 14.3 mA Quiescent Current (Power-Down) 1.1 1.3 1.65 mA

Table 1. (Continued) At TA = 25°C, VS = 5 V, RL = 150 Ω, Gain = +2, RF = RG = 432 Ω, unless otherwise noted. Connect the exposed paddle to ground.

Table 2. (Continued)

The AD8000 LFCSP features Analog Devices low distortion pinout. used for the feedback resistor. resistance seen by the AD8000. Figure 53. LFCSP Exposed Paddle Layout input, which greatly simplifies the routing of the feedback network. can provide maximum shielding. need to be properly bypassed. noise out to higher frequencies but are not always necessary. the load, is optimal for performance. difficult layouts. This is as another option to improve performance.

analog.com Rev. D | 18 of 19 can introduce high frequency ringing at the output. This additional inductance can also contribute to increased distortion due to high frequency compression at the output. Minimize the use of vias in the direct path to the amplifier power supply pins because vias can introduce parasitic inductance, which can lead to instability. When required, use multiple large diameter vias because this lowers the equivalent parasitic inductance. GROUNDING The use of ground and power planes is encouraged as a method of proving low impedance returns for power supply and signal currents. Ground and power planes can also help to reduce stray trace inductance and to provide a low thermal path for the amplifier. Do not use ground and power planes under any of the pins of the AD8000. The mounting pads and the ground or power planes can form a parasitic capacitance at the amplifiers input. Stray capacitance on the inverting input and the feedback resistor form a pole, which degrades the phase margin, leading to instability. Excessive stray capacitance on the output also forms a pole, which degrades phase margin.

©2005-2025 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887-2356, U.S.A. Rev. D | 19 of 19 Package Drawing (Option) Package Type Package Description RD-8-4 SOIC_N_EP 8-Lead Standard Small Outline Package, with Exposed Pad CP-8-13 LFCSP 8-Lead Lead Frame Chip Scale Package For the latest package outline information and land patterns (footprints), go to Package Index. ORDERING GUIDE Model1 Temperature Range Package Description Marking CodePacking Quantity Package Option AD8000YRDZ –40°C to +125°C 8-Lead SOIC_N_EP Tube, 98 RD-8-4 AD8000YRDZ-REEL7 –40°C to +125°C 8-Lead SOIC_N_EP Reel, 1000 RD-8-4 AD8000YCPZ-REEL –40°C to +125°C 8-Lead LFCSP HNB Reel, 5000 CP-8-13 AD8000YCPZ-REEL7 –40°C to +125°C 8-Lead LFCSP HNB Reel, 1500 CP-8-13 1 Z = RoHS Compliant Part.