Differential Amplifiers

What is a Differential Amplifier?
A differential amplifier is a type of electronic amplifier that increases the difference between 2 input voltages. Differential amplifiers also suppress and voltage common to the two inputs. A digital amplifier is one on the most used and important components within integrated circuits.

Differential Amplifier 2 inputs
• One inverting
• One non-inverting

Why use a Differential Amplifier?
Differential amplifiers are used to amplify balanced differential signals which are used to communicate small signals in electrically noisy environments. The signal wires should be close or wired together and most of the induced noise with be “common mode”, affecting both wires in the same way.

Differential Amplifier Applications.
The main application of a differential amplifier is to get rid of any noise and voltages that are present in both of the voltage inputs. This noise is present in common mode fluctuating voltage. Differential amplifiers are used in circuits that utilise negative feedback, controlling motors and signal amplification.

Various electronic devices use differential amplifiers.
• FM/Am Radio signal recovery
• Audio pre-amplifiers
• Microphone pre-amplifiers
• TV Signal recovery
• Digital to analogue converters

A Differential amplifier can be configured to operate as single ended amplifier by grounding one of the inputs.
Modern differential amplifiers normally sit on a single microchip. Inside the microchip, positive and negative signals are added and become a single output.

What is CMRR and PSRR?
CMRR – Common mode rejection ratio
PSSR – Power supply rejection ratio

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Beskrivning Pris Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Maximum Input Offset Voltage Maximum Input Resistance Maximum Voltage Gain Typical Gain Bandwidth Product Minimum CMRR Output Configuration Number of Channels per Chip Mounting Type Package Type Pin Count Rail to Rail
RS-artikelnummer 100-3830
Tillv. art.nrINA146UA
VarumärkeTexas Instruments
25,706 kr
Each (In a Tube of 75)
Enheter
Dual, Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 10mV 0.11MΩ 40dB - 70dB - 1 Surface Mount SOIC 8 -
RS-artikelnummer 912-8977
Tillv. art.nrAD8132ARMZ
VarumärkeAnalog Devices
30,096 kr
Each (In a Tube of 50)
Enheter
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 3.5mV 3MΩ 0.129dB - - - 1 Surface Mount MSOP 8 -
RS-artikelnummer 497-3687
Tillv. art.nrAD8132ARMZ
VarumärkeAnalog Devices
39,40 kr
Each
Enheter
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 3.5mV 3MΩ 0.129dB - - - 1 Surface Mount MSOP 8 -
RS-artikelnummer 378-2783
Tillv. art.nrINA146UA
VarumärkeTexas Instruments
26,83 kr
Each
Enheter
Dual, Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 10mV 0.11MΩ 40dB - 70dB - 1 Surface Mount SOIC 8 -
RS-artikelnummer 697-6988
Tillv. art.nrAD698APZ
VarumärkeAnalog Devices
342,67 kr
Each
Enheter
- 17.5 V 13V - - - - - - - Surface Mount PLCC 28 -
RS-artikelnummer 912-8970
Tillv. art.nrAD8132ARZ
VarumärkeAnalog Devices
30,208 kr
Each (In a Tube of 98)
Enheter
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 3.5mV 3MΩ 0.129dB - - - 1 Surface Mount SOIC 8 -
RS-artikelnummer 496-7171
Tillv. art.nrAD8139ARDZ
VarumärkeAnalog Devices
77,14 kr
Each
Enheter
Dual, Single 5 V, 9 V ±3 V, ±5 V 0.5mV 1.5MΩ 0.009dB - 75dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-artikelnummer 497-3700
Tillv. art.nrAD8132ARZ
VarumärkeAnalog Devices
39,40 kr
Each
Enheter
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 3.5mV 3MΩ 0.129dB - - - 1 Surface Mount SOIC 8 -
RS-artikelnummer 912-8801
Tillv. art.nrAD8137YRZ
VarumärkeAnalog Devices
19,952 kr
Each (In a Tube of 98)
Enheter
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 2.7mV 0.8MΩ 0.172dB - 62dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-artikelnummer 162-5551
Tillv. art.nrTL592B-8D
VarumärkeTexas Instruments
12,764 kr
Each (In a Tube of 75)
Enheter
Dual - ±6V - 0.004MΩ - - 60dB - 1 Surface Mount SOIC 8 -
RS-artikelnummer 912-8810
Tillv. art.nrAD8139ARDZ
VarumärkeAnalog Devices
60,254 kr
Each (In a Tube of 98)
Enheter
Dual, Single 5 V, 9 V ±3 V, ±5 V 0.5mV 1.5MΩ 0.009dB - 75dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-artikelnummer 912-6145
Tillv. art.nrAD698APZ
VarumärkeAnalog Devices
306,419 kr
Each (In a Tube of 39)
Enheter
- 17.5 V 13V - - - - - - - Surface Mount PLCC 28 -
RS-artikelnummer 697-6953
Tillv. art.nrAD598JRZ
VarumärkeAnalog Devices
443,17 kr
Each
Enheter
- - - - - - - - - - Surface Mount SOIC W 20 -
RS-artikelnummer 764-8788
Tillv. art.nrADA4940-2ACPZ-R7
VarumärkeAnalog Devices
56,35 kr
Each
Enheter
Single 5 V - 0.35mV 33kΩ 99dB 260MHz 86dB - 2 Surface Mount LFCSP VQ 24 Rail to Rail Output
RS-artikelnummer 912-9936
Tillv. art.nrADA4940-2ACPZ-R7
VarumärkeAnalog Devices
40,277 kr
Each (On a Reel of 1500)
Enheter
Single 5 V - 0.35mV 33kΩ 99dB 260MHz 86dB - 2 Surface Mount LFCSP VQ 24 Rail to Rail Output
RS-artikelnummer 496-7165
Tillv. art.nrAD8137YRZ
VarumärkeAnalog Devices
26,036 kr
Each (In a Pack of 5)
Enheter
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 2.7mV 0.8MΩ 0.172dB - 62dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-artikelnummer 661-2551
Tillv. art.nrTL592B-8D
VarumärkeTexas Instruments
14,89 kr
Each
Enheter
Dual - ±6V - 0.004MΩ - - 60dB - 1 Surface Mount SOIC 8 -
RS-artikelnummer 912-7684
Tillv. art.nrAD598JRZ
VarumärkeAnalog Devices
396,371 kr
Each (In a Tube of 37)
Enheter
- - - - - - - - - - Surface Mount SOIC W 20 -
RS-artikelnummer 660-5314
Tillv. art.nrINA154U
VarumärkeTexas Instruments
33,92 kr
Each
Enheter
Dual - ±15V 0.75mV 0.05MΩ 0dB - 80dB - 1 Surface Mount SOIC 8 -
RS-artikelnummer 162-5022
Tillv. art.nrINA154U
VarumärkeTexas Instruments
30,448 kr
Each (In a Tube of 75)
Enheter
Dual - ±15V 0.75mV 0.05MΩ 0dB - 80dB - 1 Surface Mount SOIC 8 -
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