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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers

ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers
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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 1

Low noise preamplifier Ultrasound amplifiers PLL loop filters High performance ADC drivers DAC buffers Figure 2. Voltage Noise vs. Frequency GENERAL DESCRIPTION The ADA4896-2/ADA4897-1/ADA4897-2 are unity-gain stable, low noise, rail-to-rail output, high speed voltage feedback amplifiers that have a quiescent current of 3 mA. With a 1/f noise of 2.4 nV/√Hz at 10 Hz and a spurious-free dynamic range of −80 dBc at 2 MHz, the ADA4896-2/ADA4897-1/ADA4897-2 are ideal solutions in a variety of applications, including ultrasound, low noise preamplifiers, and drivers of high performance ADCs. The Analog Devices, Inc., proprietary next-generation SiGe bipolar process and innovative architecture enable such high performance amplifiers. The ADA4896-2/ADA4897-1/ADA4897-2 have 230 MHz bandwidth, 120 V/μs slew rate, and settle to 0.1% in 45 ns. With a wide supply voltage range of 3 V to 10 V, the ADA4896-2/ ADA4897-1/ADA4897-2 are ideal candidates for systems that require high dynamic range, precision, low power, and high speed. The ADA4896-2 is available in 8-lead LFCSP and 8-lead MSOP packages. The ADA4897-1 is available in 8-lead SOIC and 6-lead SOT-23 packages. The ADA4897-2 is available in a 10-lead MSOP package. The ADA4896-2/ADA4897-1/ADA4897-2 operate over the extended industrial temperature range of −40°C to +125°C. FUNCTIONAL BLOCK DIAGRAM VOLTAGE NOISE (nV/√Hz) Low wideband noise 1 nV/√Hz 2.8 pA/√Hz Low 1/f noise: 2.4 nV/√Hz at 10 Hz Low distortion: −115 dBc at 100 kHz, VOUT = 2 V p-p Low power: 3 mA per amplifier Low input offset voltage: 0.5 mV maximum High speed −3 dB bandwidth: 230 MHz (G = +1) Slew rate: 120 V/μs Settling time to 0.1%: 45 ns Rail-to-rail output Wide supply range: 3 V to 10 V Disable feature (ADA4897-1/ADA4897-2) Data Sheet 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers ADA4896-2/ADA4897-1/ADA4897-2 Table 2. Complementary ADCs Part No. AD7944 AD7985 AD7986 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2012 Analog Devices, Inc. All rights reserved.

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 2

Powered by TCPDF (www.tcpdf.org) IMPORTANT LINKS for the ADA4896-2_4897-1_4897-2* Last content update 07/24/2013 06:07 pm PARAMETRIC SELECTION TABLES DESIGN TOOLS, MODELS, DRIVERS & SOFTWARE Find Similar Products By Operating Parameters Analog Filter Wizard 2.0 ADA44896/7 SPICE Macro Model, Ver. 2.1 DOCUMENTATION AN-0991: Active Filter Evaluation Board for Standard SOIC Op Amps AN-581: Biasing and Decoupling Op Amps in Single Supply Applications AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps ADA4895 / 6 / 7 Fastest, Low Noise, Low Power, Rail-to-Rail Amps Op Amp...

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 3

Data Sheet

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 4

Data Sheet SPECIFICATIONS ±5 V SUPPLY TA = 25°C, G = +1, RL = 1 kΩ to ground, unless otherwise noted. Table 3. Parameter DYNAMIC PERFORMANCE −3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% Settling Time to 0.01% NOISE/HARMONIC PERFORMANCE Harmonic Distortion (SFDR) Input Voltage Noise Input Current Noise 0.1 Hz to 10 Hz Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Bias Current Drift Input Bias Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Common-Mode Differential Input Capacitance...

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 5

ADA4896-2/ADA4897-1/ADA4897-2 Parameter POWER SUPPLY Operating Range Quiescent Current per Amplifier Data Sheet Test Conditions/Comments Enabled Disabled DISABLE = −5 V Power Supply Rejection Ratio (PSRR) Positive Negative DISABLE PIN (ADA4897-1/ADA4897-2) DISABLE Voltage Input Current Enabled Disabled Switching Speed Enabled Disabled +5 V SUPPLY TA = 25°C, G = +1, RL = 1 kΩ to midsupply, unless otherwise noted. Table 4. Parameter DYNAMIC PERFORMANCE −3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% Settling Time to 0.01% NOISE/HARMONIC PERFORMANCE Harmonic...

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 6

Data Sheet Parameter INPUT CHARACTERISTICS Input Resistance Common-Mode Differential Input Capacitance Common-Mode Differential Input Common-Mode Voltage Range Common-Mode Rejection Ratio (CMRR) OUTPUT CHARACTERISTICS Output Overdrive Recovery Time Output Voltage Swing Positive Negative Output Current Short-Circuit Current Capacitive Load Drive POWER SUPPLY Operating Range Quiescent Current per Amplifier Input Current Enabled Disabled Switching Speed Enabled Disabled Enabled Disabled VIN = 0 V to 5 V, G = +2 RL = 1 kΩ RL = 100 Ω RL = 1 kΩ RL = 100 Ω SFDR = −45 dBc Sinking/sourcing 30%...

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 7

Data Sheet +3 V SUPPLY TA = 25°C, G = +1, RL = 1 kΩ to midsupply, unless otherwise noted. Table 5. Parameter DYNAMIC PERFORMANCE −3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% Settling Time to 0.01% NOISE/HARMONIC PERFORMANCE Harmonic Distortion (SFDR) Input Voltage Noise Input Current Noise 0.1 Hz to 10 Hz Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Bias Current Drift Input Bias Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Common-Mode Differential Input Capacitance Common-Mode...

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 8

Data Sheet Parameter Power Supply Rejection Ratio (PSRR) Positive Negative DISABLE PIN (ADA4897-1/ADA4897-2) DISABLE Voltage Input Current Enabled Disabled Switching Speed Enabled Disabled Enabled Disabled

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ADA4896-2/ADA4897-1/ADA4897-2: 1 nV/?Hz, Low Power, Rail-to-Rail Output Amplifiers - 9

Data Sheet ABSOLUTE MAXIMUM RATINGS Table 6. Rating 11 V See Figure 3 −VS − 0.7 V to +VS + 0.7 V 0.7 V −65°C to +125°C −40°C to +125°C 300°C 150°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL RESISTANCE θJA is specified for the worst-case...

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