Document
Data Sheet ADA4077-1/ADA4077-2/ADA4077-4
4 MHz, 7 nV/√Hz, Low Offset and Drift, High Precision Amplifiers
FEATURES
► Offset voltage: ► 25 µV maximum at 25°C (B grade, 8-lead SOIC, single/ dual) ► 50 µV maximum at 25°C (A grade, 8-lead SOIC, single/ dual) ► 50 µV maximum at 25°C (A grade, 14-lead SOIC, quad)
► Offset voltage drift: ► 0.25 µV/°C maximum (B grade, 8-lead SOIC, single/dual) ► 0.55 µV/°C maximum (A grade, 8-lead SOIC, single/dual) ► 0.75 µV/°C maximum (A grade, 14-lead SOIC, quad)
► MSL1 rated ► Low input bias current: 1 nA maximum at TA = 25°C ► Low voltage noise density: 6.9 nV/√Hz typical at f = 1000 Hz ► CMRR, PSRR, and AV > 120 dB minimum ► Low supply current: 400 µA per amplifier typical ► Wide gain bandwidth product: 3.9 MHz at ±5 V ► Dual-supply operation:
► Specified at ±5 V to ±15 V ► Operates at ±2.5 V to ±15 V ► Unity gain stable ► No phase reversal ► Long-term offset voltage drift (10,000 hours): 0.5 µV typical ► Temperature hysteresis: 1 µV typical
APPLICATIONS
► Process control front-end amplifiers ► Optical network control circuits ► Instrumentation ► Precision sensors and controls ► Precision filters
GENERAL DESCRIPTION
The single ADA4077-1, dual ADA4077-2, and quad ADA4077-4 amplifiers feature extremely low offset voltage and drift, and low input bias current, noise, and power consumption. Outputs are stable with capacitive loads of more than 1000 pF with no external compensation.
Applications for this amplifier include sensor signal conditioning (such as thermocouples, resistance temperature detectors (RTDs), strain gages), process control front-end amplifiers, and precision diode power measurement in optical and wireless transmission systems. The ADA4077-1/ADA4077-2/ADA4077-4 are useful in line powered and portable instrumentation, precision filters, and voltage or current measurement and level setting.
PIN CONNECTION DIAGRAMS
Figure 1. ADA4077-1, 8-Lead SOIC and 8-Lead MSOP Figure 2. ADA4077-2, 8-Lead MSOP and 8-Lead SOIC
Figure 3. ADA4077-4, 14-Lead TSSOP and 14-Lead SOIC
Unlike other amplifiers, the ADA4077-1/ADA4077-2/ADA4077-4 have an MSL1 rating that is compliant with the most stringent of assembly processes, and they are specified over the extended industrial temperature range from −40°C to +125°C for the most demanding operating environments.
Table 1. Evolution of Precision Devices by Generation
Op Amp First Second Third Fourth Fifth
Single Dual Quad
OP07 OP77
OP177
OP1177 OP2177 OP4177
AD8677
Sixth
ADA4077-1 ADA4077-2 ADA4077-4
Rev. F DOCUMENT FEEDBACK TECHNICAL SUPPORT
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Data Sheet
ADA4077-1/ADA4077-2/ADA4077-4
TABLE OF CONTENTS
Features................................................................ 1 Applications........................................................... 1 Pin Connection Diagrams......................................1 General Description...............................................1 Specifications........................................................ 3
Electrical Characteristics, ±5 V...........................3 Electrical Characteristics, ±15 V.........................4 Absolute Maximum Ratings...................................6 Thermal Resistance........................................... 6 ESD Caution.......................................................6 Pin Configurations and Function Descriptions.......7
Typical Performance Characteristics................... 10 Test Circuit...........................................................20 Theory of Operation.............................................21 Applications Information...................................... 22
Output Phase Reversal.................................... 22 Low Power Linearized RTD..............................22 Proper Board Layout........................................ 22 Long-Term Drift.................................................22 Temperature Hysteresis................................... 23 Outline Dimensions............................................. 24 Ordering Guide.................................................25
REVISION HISTORY
8/2022—Rev. E to Rev. F Changes to General Description Section.........................................................................................................1 Deleted Figure 4, Renumbered Sequentially................................................................................................... 1 Changes to Output Voltage High Pa.