Datasheet ADA4084-1, ADA4084-2, ADA4084-4 (Analog Devices)

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30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Amplifiers Data Sheet ADA4084-1/ ADA4084-2/ ADA4084-4 FEATURES PIN CONNECTION DIAGRAM Rail-to-rail input/output ADA4084-2 Low power: 0.625 mA typical per amplifier at ±15 V OUT A 1 8 V+ Gain bandwidth product: 15.9 MHz at A –IN A 2 7 OUT B V = 100 typical Unity-gain crossover: 9.9 MHz typical +IN A 3 6 –IN B −3 dB closed-loop bandwidth: 13.9 MHz typical at ±15 V V– 4 5 +IN B Low offset voltage: 100 μV maximum (SOIC) NOTES
1
Unity-gain stable 1. FOR THE LFCSP PACKAGE,
-00
THE EXPOSED PAD MUST BE
237 08
High slew rate: 4.6 V/μs typical CONNECTED TO V–.
Figure 1. ADA4084-2, 8-Lead LFCSP (CP)
Low noise: 3.9 nV/√Hz typical at 1 kHz APPLICATIONS
See the Pin Configurations and Function Descriptions section for additional pin configurations and information about the pin
Battery-powered instrumentation
functions.
High-side and low-side sensing Power supply control and protection Telecommunications Digital-to-analog converter (DAC) output amplifiers Analog-to-digital converter (ADC) input buffers GENERAL DESCRIPTION
The ADA4084-1 (single), ADA4084-2 (dual), and ADA4084-4 The single ADA4084-1 is available in the 5-lead SOT-23 and (quad) are single-supply, 10 MHz bandwidth amplifiers featuring 8-lead SOIC; the dual ADA4084-2 is available in the 8-lead rail-to-rail inputs and outputs. They are guaranteed to operate SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount from +3 V to +30 V (or ±1.5 V to ±15 V). packages; and the ADA4084-4 is offered in the 14-lead TSSOP These amplifiers are well suited for single-supply applications and 16-lead LFCSP. requiring both ac and precision dc performance. The combination The ADA4084-1, ADA4084-2, and ADA4084-4 are members of of wide bandwidth, low noise, and precision makes the a growing series of high voltage, low noise op amps offered by ADA4084-1, ADA4084-2, and ADA4084-4 useful in a wide Analog Devices, Inc. (see Table 1). variety of applications, including filters and instrumentation.
Table 1. Low Noise Op Amps
Other applications for these amplifiers include portable telecom-
Single Dual Quad Voltage Noise
munications equipment, power supply control and protection, and AD8597 AD8599 1.1 nV/Hz use as amplifiers or buffers for transducers with wide output ADA4004-1 ADA4004-2 ADA4004-4 1.8 nV/Hz ranges. Sensors requiring a rail-to-rail input amplifier include AD8675 AD8676 2.8 nV/Hz rail-to-rail output Hall effect, piezoelectric, and resistive transducers. AD8671 AD8672 AD8674 2.8 nV/Hz OP27, OP37 3.2 nV/Hz The ability to swing rail to rail at both the input and output ADA4084-1 ADA4084-2 ADA4084-4 3.9 nV/Hz rail-to-rail enables designers to build multistage filters in single-supply input/output systems and to maintain high signal-to-noise ratios. The ADA4084-1, ADA4084-2, and ADA4084-4 are specified over the industrial temperature range of −40°C to +125°C.
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Document Outline FEATURES APPLICATIONS PIN CONNECTION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS ±1.5 V CHARACTERISTICS ±5 V CHARACTERISTICS ±15 V CHARACTERISTICS APPLICATIONS INFORMATION FUNCTIONAL DESCRIPTION START-UP CHARACTERISTICS INPUT PROTECTION OUTPUT PHASE REVERSAL DESIGNING LOW NOISE CIRCUITS IN SINGLE-SUPPLY APPLICATIONS COMPARATOR OPERATION OUTLINE DIMENSIONS ORDERING GUIDE