AD797BRZ-REEL Analog Devices Inc, AD797BRZ-REEL Datasheet
AD797BRZ-REEL
Specifications of AD797BRZ-REEL
Available stocks
Related parts for AD797BRZ-REEL
AD797BRZ-REEL Summary of contents
Page 1
FEATURES Low noise 0.9 nV/√Hz typical (1.2 nV/√Hz maximum) input voltage noise at 1 kHz 50 nV p-p input voltage noise, 0 Low distortion −120 dB total harmonic distortion at 20 kHz Excellent ac characteristics 800 ...
Page 2
AD797 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 5 Pin Configuration ............................................................................. 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 Typical Performance ...
Page 3
SPECIFICATIONS T = 25°C and V = ±15 V dc, unless otherwise noted Table 2. Parameter Conditions INPUT OFFSET VOLTAGE MIN MAX Offset Voltage Drift INPUT BIAS CURRENT MIN MAX INPUT OFFSET ...
Page 4
AD797 Parameter Conditions TOTAL HARMONIC kΩ, C LOAD DISTORTION f = 250 kHz rms kΩ, LOAD kHz rms INPUT CHARACTERISTICS Input Resistance Differential Common Mode Input Capacitance ...
Page 5
ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage 1 Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range (N, R Suffix) Operating Temperature Range Lead Temperature (Soldering 60 sec) 1 The AD797 inputs are protected by back-to-back diodes. ...
Page 6
AD797 TYPICAL PERFORMANCE CHARACTERISTICS SUPPLY VOLTAGE (±V) Figure 3. Input Common-Mode Voltage Range vs. Supply Voltage OUT –V OUT SUPPLY VOLTAGE (±V) Figure ...
Page 7
SUPPLY VOLTAGE (±V) Figure 9. Quiescent Supply Current vs. Supply Voltage f = 1kHz R = 600Ω + ±5 ±10 ...
Page 8
AD797 100 1k 10k 100k FREQUENCY (Hz) Figure 15. Input Voltage Noise Spectral Density 120 PHASE MARGIN 100 WITH GAIN 100 S 20 *SEE FIGURE 25. WITH ...
Page 9
S * 1kΩ AD797 –V S *SEE FIGURE 35. Figure 21. Inverter Connection 1µs 100 Figure 22. Inverter Large-Signal Pulse Response 50mV 100 90 10 ...
Page 10
AD797 50mV 100 Figure 27. 16-Bit Settling Time Positive Input Pulse 50mV 100 Figure 28. 16-Bit Settling Time Negative Input Pulse – 90 500ns –100 –110 –120 –130 100 500ns Rev Page ...
Page 11
THEORY OF OPERATION The architecture of the AD797 was developed to overcome inherent limitations in previous amplifier designs. Previous precision amplifiers used three stages to ensure high open-loop gain (see Figure 30) at the expense of additional frequency com- pensation ...
Page 12
AD797 NOISE AND SOURCE IMPEDANCE CONSIDERATIONS The AD797 ultralow voltage noise of 0.9 nV/√Hz is achieved with special input transistors running at nearly collector current. Therefore important to consider the total input- referred noise (e ...
Page 13
BYPASSING CONSIDERATIONS Taking full advantage of the very wide bandwidth and dynamic range capabilities of the AD797 requires some precautions. First, multiple bypassing is recommended in any precision application. A 1.0 μF to 4.7 μF tantalum in parallel with 0.1 ...
Page 14
AD797 The I-to-V converter is a special case of the follower configu- ration. When the AD797 is used in an I-to-V converter, for example as a DAC buffer, the circuit shown in Figure 39 should be used. The value of ...
Page 15
TO TEKTRONIX OSCILLOSCOPE PREAMP INPUT SECTION 226Ω 4.26kΩ – AD829 2× HP2835 0.47µ –V S 1kΩ 1kΩ 100Ω 1kΩ TEKTRONIX CALIBRATION FIXTURE V IN 1kΩ – AD797 7 + ...
Page 16
AD797 Differential Line Receiver The differential receiver circuit of Figure 46 is useful for many applications, from audio to MRI imaging. The circuit allows extraction of a low level signal in the presence of common- mode noise. As shown in ...
Page 17
Ultrasound/Sonar Imaging Preamp The AD600 variable gain amplifier provides the time-controlled gain (TCG) function necessary for very wide dynamic range sonar and low frequency ultrasound applications. Under some circumstances necessary to buffer the input of the AD600 to ...
Page 18
AD797 OUTLINE DIMENSIONS 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE ...
Page 19
... AD797BR-REEL7 −40°C to +85°C AD797BRZ −40°C to +85°C AD797BRZ-REEL −40°C to +85°C AD797BRZ-REEL7 −40°C to +85° RoHS Compliant Part. Package Description 8-Lead Plastic Dual In-Line Package [PDIP] 8-Lead Standard Small Outline Package [SOIC_N] ...
Page 20
AD797 NOTES ©2002-2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00846-0-6/10(H) Rev Page ...