Operational Amplifiers

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Current Feedback Op Amps[edit]

EEVBlog Tutorials[edit]

My Orders[edit]

instrumentation amplifier: AD8222
precision peak detector: TS912 low bias current op amp
chopper op amp: MAX4239

== Instrumentation Amplifiers

homebrew with 3x OP07D is pretty typical!

Linear Technologies
LT1101
gain: fixed, 10 or 100
single (+5V) or dual (±15V)
LT1101AIN
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1729936_-1
LT1101IN (slightly worse specs)
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1729979_-1
FULLY specified for pin-strappable gains of 10x and 100x
$19

Analog Devices
AD620AN
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_115174_-1
AD620ANZ (lead-free version of AD620AN)
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1780862_-1
AD620B (less gain error and less voltage offset than AD620A)
op amps: 1
gain:   1       (1000 kHz)
        10      (800 kHz)
        100     (120 kHz)
        1000    (12 kHz)
input bias current: 2 nA max
supply: dual (±2.3V to ±18V)
http://www.jameco.com/Jameco/Products/ProdDS/115174.pdf
higher CMR and lower input bias current than AD623
$7

Analog Devices
AD621ANZ (lead-free)
gain: fixed, 10 or 100
bandwidth: 800kHz (G=10) or 200kHz (G=100)
supply: dual (±2.3V to ±18V)
op amps: 1
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1780918_-1
http://www.jameco.com/Jameco/Products/ProdDS/1780918.pdf
FULLY specified for pin-strappable gains of 10x and 100x
$12

Analog Devices
AD623
gain: 1 fixed to 1,000
bandwidth: 800kHz @ G=1
input bias current: 25 nA max
single (+3 to +12V) or dual (±2.5V to ±6.0V)
AD623ANZ (lead-free
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1780985_-1
http://www.jameco.com/Jameco/Products/ProdDS/1780985.pdf
specifically listed for industrial process control and transducer/thermocouple/acquisition/difference amplifiers
optimized for single-supply use; gain set with a single resistor
$5

Texas Instruments
INA126
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_825934_-1
http://www.jameco.com/Jameco/Products/ProdDS/825934.pdf
supply: dual (±1.35V to ±18V)
op amps: 1
gain:   5       (200 kHz)
        10      (9 kHz)
        500     (1.8 kHz)
input bias current: 10nA
$3

Analog Devices
AD823
supply: single (3V to 36V) or dual (±1.5V to ±18V)
input bias current: <25 pA
devices per package: 2x
single- or dual-supply JFET input rail-to-rail high-speed general-purpose
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1791668_-1
http://www.jameco.com/Jameco/Products/ProdDS/1791668.pdf
$7.15

let's buy 2x AD623 (single-supply), 2x AD620 (dual-supply), 4x INA126  (cheapo low-bandwidth dual supply), 2x AD823 (dual-supply JFET input rail-to-rail high-speed)
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TEXAS INSTRUMENTS
TLE2142
gain-bandwidth product: 5.9MHz
single (+4 to +44V) or split
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2002771_-1
$3.09