Analog Devices AD620 user manual

User manual for the device Analog Devices AD620

Device: Analog Devices AD620
Category: Computer Hardware
Manufacturer: Analog Devices
Size: 0.59 MB
Added : 5/18/2013
Number of pages: 16
Print the manual

Download

How to use this site?

Our goal is to provide you with a quick access to the content of the user manual for Analog Devices AD620. Using the online preview, you can quickly view the contents and go to the page where you will find the solution to your problem with Analog Devices AD620.

For your convenience

If looking through the Analog Devices AD620 user manual directly on this website is not convenient for you, there are two possible solutions:

  • Full Screen Viewing - to easily view the user manual (without downloading it to your computer), you can use full-screen viewing mode. To start viewing the user manual Analog Devices AD620 on full screen, use the button Fullscreen.
  • Downloading to your computer - You can also download the user manual Analog Devices AD620 to your computer and keep it in your files. However, if you do not want to take up too much of your disk space, you can always download it in the future from ManualsBase.
Analog Devices AD620 User manual - Online PDF
Advertisement
« Page 1 of 16 »
Advertisement
Print version

Many people prefer to read the documents not on the screen, but in the printed version. The option to print the manual has also been provided, and you can use it by clicking the link above - Print the manual. You do not have to print the entire manual Analog Devices AD620 but the selected pages only. paper.

Summaries

Below you will find previews of the content of the user manuals presented on the following pages to Analog Devices AD620. If you want to quickly view the content of pages found on the following pages of the manual, you can use them.

Abstracts of contents
Summary of the content on the page No. 1

Low Cost, Low Power
a
Instrumentation Amplifier
AD620
CONNECTION DIAGRAM
FEATURES
EASY TO USE
8-Lead Plastic Mini-DIP (N), Cerdip (Q)
Gain Set with One External Resistor
and SOIC (R) Packages
(Gain Range 1 to 1000)
Wide Power Supply Range (62.3 V to 618 V)
1 8 R
R
G G
Higher Performance than Three Op Amp IA Designs
Available in 8-Lead DIP and SOIC Packaging –IN 2 7 +V
S
Low Power, 1.3 mA max Supply Current
+IN 3 6 OUTPUT
EXCELLENT DC PERFORMANCE (“B GRADE”)
–V 4
5 REF
S
AD620
50 mV max, Input Of

Summary of the content on the page No. 2

AD620–SPECIFICATIONS (Typical @ +258C, V = 615 V, and R = 2 kV, unless otherwise noted) S L 1 AD620A AD620B AD620S Model Conditions Min Typ Max Min Typ Max Min Typ Max Units GAIN G = 1 + (49.4 k/R ) G Gain Range 1 10,000 1 10,000 1 10,000 2 Gain Error V = ±10 V OUT G = 1 0.03 0.10 0.01 0.02 0.03 0.10 % G = 10 0.15 0.30 0.10 0.15 0.15 0.30 % G = 100 0.15 0.30 0.10 0.15 0.15 0.30 % G = 1000 0.40 0.70 0.35 0.50 0.40 0.70 % Nonlinearity, V = –10 V to +10 V, OUT G = 1–1000 R = 10 kΩ 10 40 10 40 10 4

Summary of the content on the page No. 3

AD620 1 AD620A AD620B AD620S Model Conditions Min Typ Max Min Typ Max Min Typ Max Units DYNAMIC RESPONSE Small Signal –3 dB Bandwidth G = 1 1000 1000 1000 kHz G = 10 800 800 800 kHz G = 100 120 120 120 kHz G = 1000 12 12 12 kHz Slew Rate 0.75 1.2 0.75 1.2 0.75 1.2 V/μs Settling Time to 0.01% 10 V Step G = 1–100 15 15 15 μs G = 1000 150 150 150 μs NOISE 2 2 Voltage Noise, 1 kHz Total RTI Noise = (e )+(e /G) no ni Input, Voltage Noise, e 913 9 13 913 nV/√Hz ni Output, Voltage Noise, e 72 100

Summary of the content on the page No. 4

AD620 1 ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V 2 Model Temperature Ranges Package Options* Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . 650 mW Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ±V S AD620AN –40°C to +85°C N-8 Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . .±25 V AD620BN –40°C to +85°C N-8 Output Short Circuit Duration . . . .

Summary of the content on the page No. 5

AD620 (@ +258C, V = 615 V, R = 2 kV, unless otherwise noted) Typical Characteristics S L 50 2.0 SAMPLE SIZE = 360 1.5 40 1.0 +I B –I B 0.5 30 0 20 –0.5 –1.0 10 –1.5 0 –2.0 –80 –40 0 +40 +80 –75 –25 25 75 125 175 INPUT OFFSET VOLTAGE – mV TEMPERATURE – 8C Figure 3. Typical Distribution of Input Offset Voltage Figure 6. Input Bias Current vs. Temperature 50 2 SAMPLE SIZE = 850 40 1.5 30 1 20 0.5 10 0 0 –1200 –600 0 +600 +1200 051234 INPUT BIAS CURRENT – pA WARM-UP TIME – Minutes Figure 4. Typical

Summary of the content on the page No. 6

AD620–Typical Characteristics 1000 100 10 1 1000 10 100 FREQUENCY – Hz Figure 9. Current Noise Spectral Density vs. Frequency Figure 11. 0.1 Hz to 10 Hz Current Noise, 5 pA/Div 100,000 10,000 FET INPUT IN-AMP 1000 AD620A 100 10 TIME – 1 SEC/DIV 1k 10k 100k 1M 10M SOURCE RESISTANCE – V Figure 12. Total Drift vs. Source Resistance Figure 10a. 0.1 Hz to 10 Hz RTI Voltage Noise (G = 1) +160 G = 1000 +140 G = 100 +120 G = 10 +100 G = 1 +80 +60 +40 +20 0 0.1 1 10 100 1k 10k 100k 1M TIME – 1 SEC/DIV F

Summary of the content on the page No. 7

AD620 180 35 G = 10, 100, 1000 160 30 140 25 G = 1000 120 G = 1 20 100 G = 100 15 80 G = 10 10 60 G = 1 5 40 G = 1000 G = 100 20 0 0.1 1 10 100 1k 10k 100k 1M 1k 10k 100k 1M FREQUENCY – Hz FREQUENCY – Hz Figure 17. Large Signal Frequency Response Figure 14. Positive PSR vs. Frequency, RTI (G = 1–1000) +V –0.0 180 S 160 –0.5 –1.0 140 –1.5 120 100 G = 1000 80 +1.5 G = 100 60 +1.0 G = 10 40 +0.5 G = 1 20 –V +0.0 S 0 5 10 15 20 0.1 1 10 100 1k 10k 100k 1M SUPPLY VOLTAGE 6 Volts FREQUENCY – Hz

Summary of the content on the page No. 8

AD620 30 .... .... .... .... .... .... .... .... .... .... V = 615V S G = 10 20 10 .... .... .... .... .... .... .... .... .... .... 0 0 100 1k 10k LOAD RESISTANCE – V Figure 20. Output Voltage Swing vs. Load Resistance Figure 23. Large Signal Response and Settling Time, G = 10 (0.5 mV = 001%) .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... Figur

Summary of the content on the page No. 9

AD620 20 .... .... .... .... .... .... .... .... ........ 15 TO 0.01% TO 0.1% 10 5 .... .... .... .... .... .... .... .... ........ 0 02 5 10 150 OUTPUT STEP SIZE – Volts Figure 26. Small Signal Pulse Response, G = 100, Figure 29. Settling Time vs. Step Size (G = 1) R = 2 kΩ, C = 100 pF L L 1000 .... .... .... .... .... .... .... .... .... .... 100 10 .... .... .... .... .... .... .... .... .... .... 1 1 10 100 1000 GAIN Figure 27. Large Signal Response and Settling Time, Figure 30. Settling Tim

Summary of the content on the page No. 10

AD620 20mA V I1 20mA I2 B .... .... .... .... .... .... .... .... ........ A1 A2 10kV C1 C2 10kV A3 OUTPUT 10kV 10kV R3 R1 R2 REF 400V – IN Q1 Q2 +IN R4 R 400V G .... .... .... .... .... .... .... .... ........ GAIN GAIN SENSE SENSE –V S Figure 33. Simplified Schematic of AD620 Figure 31b. Gain Nonlinearity, G = 100, R = 10 kΩ L (100 μV = 10 ppm) THEORY OF OPERATION The AD620 is a monolithic instrumentation amplifier based on a modification of the classic three op amp approach. Absolute value tr

Summary of the content on the page No. 11

AD620 Make vs. Buy: A Typical Bridge Application Error Budget systems, absolute accuracy and drift errors are by far the most The AD620 offers improved performance over “homebrew” significant contributors to error. In more complex systems with three op amp IA designs, along with smaller size, fewer compo- an intelligent processor, an autogain/autozero cycle will remove all nents and 10´ lower supply current. In the typical application, absolute accuracy and drift errors leaving only the resoluti

Summary of the content on the page No. 12

AD620 +5V 20kV 7 3 3kV 3kV REF 8 G=100 AD620B 6 IN DIGITAL 499V 3kV 3kV 5 10kV DATA ADC 1 OUTPUT 4 2 AGND AD705 20kV 0.6mA 1.7mA 0.10mA 1.3mA MAX MAX Figure 35. A Pressure Monitor Circuit which Operates on a +5 V Single Supply Pressure Measurement Medical ECG Although useful in many bridge applications such as weigh The low current noise of the AD620 allows its use in ECG scales, the AD620 is especially suitable for higher resistance monitors (Figure 36) where high source resistances of 1 MΩ or

Summary of the content on the page No. 13

AD620 Precision V-I Converter INPUT AND OUTPUT OFFSET VOLTAGE The AD620, along with another op amp and two resistors, makes The low errors of the AD620 are attributed to two sources, a precision current source (Figure 37). The op amp buffers the input and output errors. The output error is divided by G when reference terminal to maintain good CMR. The output voltage referred to the input. In practice, the input errors dominate at V of the AD620 appears across R1, which converts it to a X high ga

Summary of the content on the page No. 14

AD620 COMMON-MODE REJECTION GROUNDING Instrumentation amplifiers like the AD620 offer high CMR, Since the AD620 output voltage is developed with respect to the which is a measure of the change in output voltage when both potential on the reference terminal, it can solve many grounding inputs are changed by equal amounts. These specifications are problems by simply tying the REF pin to the appropriate “local usually given for a full-range input voltage change and a speci- ground.” fied source imb

Summary of the content on the page No. 15

AD620 GROUND RETURNS FOR INPUT BIAS CURRENTS sources such as transformers, or ac-coupled sources, there must Input bias currents are those currents necessary to bias the input be a dc path from each input to ground as shown in Figure 42. transistors of an amplifier. There must be a direct return path Refer to the Instrumentation Amplifier Application Guide (free for these currents; therefore, when amplifying “floating” input from Analog Devices) for more information regarding in amp application

Summary of the content on the page No. 16

AD620 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-8) Package 0.430 (10.92) 0.348 (8.84) 8 5 0.280 (7.11) 0.240 (6.10) 14 0.325 (8.25) 0.300 (7.62) 0.060 (1.52) PIN 1 0.015 (0.38) 0.195 (4.95) 0.210 (5.33) 0.115 (2.93) MAX 0.130 0.160 (4.06) (3.30) MIN 0.115 (2.93) 0.015 (0.381) SEATING 0.022 (0.558) 0.100 0.070 (1.77) 0.008 (0.204) PLANE (2.54) 0.014 (0.356) 0.045 (1.15) BSC Cerdip (Q-8) Package 0.055 (1.4) 0.005 (0.13) MAX MIN 8 5 0.310 (7.87) 0.220 (5.59) 1 4 PIN 1 0


Alternative user manuals
# User manual Category Download
1 Analog Devices UG-002 User manual Computer Hardware 1
2 Analog Devices ADSP-2186 User manual Computer Hardware 6
3 Analog Devices Inc.ADSP-21535 E-KIT LITE User manual Computer Hardware 0
4 Analog Devices ADuC812 User manual Computer Hardware 9
5 Analog Devices MicroConverter ADuC832 User manual Computer Hardware 5
6 Analog Devices C1599c07 User manual Computer Hardware 0
7 Analog Devices ADSST-SALEM-3T User manual Computer Hardware 0
8 Analog Devices MicroConverter ADuC824 User manual Computer Hardware 9
9 Analog Devices ADSP-21020 User manual Computer Hardware 2
10 Analog Devices UG-001 User manual Computer Hardware 0
11 Analog Devices AD9273 User manual Computer Hardware 0
12 Analog Devices AD9551 User manual Computer Hardware 0
13 Analog Devices EZ-KIT Lite ADSP-BF537 User manual Computer Hardware 1
14 Analog Devices EZ-KIT Lite ADSP-21364 User manual Computer Hardware 2
15 Analog Devices AD9883A User manual Computer Hardware 10
16 Sony MSAKIT-PC4A User manual Computer Hardware 2
17 Sony MRW62E-S1 2694866142 User manual Computer Hardware 5
18 Philips MATCH LINE 9596 User manual Computer Hardware 17
19 Sony 64GB SDHC Class 10 Memory Card Readers SF32UY User manual Computer Hardware 1
20 Philips PSC702 User manual Computer Hardware 1