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Best Differential Amplifiers

ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier
To get you started, we have example code for both the Raspberry Pi (in our Adafruit Pi Python library) and Arduino (in our ADS1X15 Arduino library repository) Simply connect GND to ground, VDD to your logic power supply, and SCL/SDA to your microcontroller's I2C port and run the example code to start reading data.
Reviews
"Works well with both Arduino and Raspberry Pi."
"Pefect for current shunts and other low output sensors."
"That said everything hooked up to my Raspberry Pi B+ I2C buss extremely easily and the well done example code is a breeze to get the ADS1115 running in single-ended and differential modes with very little effort."
"Easy to use with publicly available libraries and example code."
"The chip requires more code to support operation ... a lot more. An external power supply is a good thing: a DROC regulated voltage module (available thru Amazon) lives up to its claims, is easily powered with an older e.g. 18V laptop power supply, and thereby improves on reading precision."
"High resolution via programmable settings."
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TEXAS INSTRUMENTS INA106KP IC, DIFFERENTIAL AMP, 5MHZ, 3V/ uS, DIP-8
TEXAS INSTRUMENTS INA106KP IC, DIFFERENTIAL AMP, 5MHZ, 3V/ uS, DIP-8.
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ANALOG DEVICES AD8130ARZ IC, DIFF AMP, 270MHZ, 1090V/ uS, SOIC-8 (5 pieces)
ANALOG DEVICES AD8130ARZ IC, DIFF AMP, 270MHZ, 1090V/ uS, SOIC-8.
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Best Current Sense Amplifiers

Uxcell a14051500ux0151 General Propose 2N3906 TO-92 Package PNP Transistor, 40V, 200 mA, 100 Piece
To-92 package, easy to weld on the PCB board.
Reviews
"A random spot check of 10 transistors from the batch exceeded hfe, leakage, breakdown, and ft specifications."
"I used 40 of these as soon as I received them, and every one of them worked great!"
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Best Isolation Amplifiers

TEXAS INSTRUMENTS LM6132BIN/NOPB IC, OP-AMP, 10MHZ, 14V/ us, DIP-8 (10 pieces)
TEXAS INSTRUMENTS LM6132BIN/NOPB IC, OP-AMP, 10MHZ, 14V/ us, DIP-8.
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Best Instrumentation Amplifiers

Texas Instruments LM358P IC Dual Operational Amplifier (Pack of 12)
These devices consist of two independent, high-gain frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages.
Reviews
""They are real and they are spectacular"."
"They work good per the datasheet."
"This awesome chip has many uses and is inexpensive."
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Best Logarithmic Amplifiers

AD8318 RF Logarithmic Detector RSSI Measurement Power Meter 1-8000MHz 70dB
Specifications: The operating frequency: 1-8000MHz. Dynamic Range: -65dBm to + 5dBm. The detection slope: -25 mV / dB (Typical values). The detection output voltage range: 0.5--2.1V. Power supply voltage: 7-15VDC (containing the power regulator circuit). The input impedance: 50 ohms. RF interface: standard SMA female. Size:5 x 3cm/1.97 x 1.18inch.
Reviews
"Haven't given it any sort of workout, but it looks nice and I can see the demodulated signals on my oscilloscope."
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Best Comparator Amplifiers

Texas Instruments NE5532P Dual Low Noise OP Amplifier, 38 mA, Through Hole Mounting (Pack of 10)
The Ne5532 is a high-performance operational amplifiers combining excellent DC and AC characteristics.
Reviews
"I needed these old op-amp for an old piece of equipment and it got here fast from China."
"good price and performance are ggod."
"exactly as advertised and came in a static free tube."
"Product arrived early and functioned as expected."
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