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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Omschrijving Prijs 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-stocknr. 647-665
FabrikantnummerINA106KP
10,47 €
Each
Aantal stuks
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Through Hole PDIP 8 -
RS-stocknr. 121-8455
FabrikantnummerINA106KP
8,526 €
Each (In a Tube of 50)
Aantal stuks
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Through Hole PDIP 8 -
RS-stocknr. 697-6988
FabrikantnummerAD698APZ
FabrikantAnalog Devices
34,49 €
Each
Aantal stuks
- 17.5 V 13V - - - - - - - Surface Mount PLCC 28 -
RS-stocknr. 912-6145
FabrikantnummerAD698APZ
FabrikantAnalog Devices
27,638 €
Each (In a Tube of 39)
Aantal stuks
- 17.5 V 13V - - - - - - - Surface Mount PLCC 28 -
RS-stocknr. 912-7378
FabrikantnummerAD626ANZ
FabrikantAnalog Devices
7,469 €
Each (In a Tube of 50)
Aantal stuks
Dual, Single 5 V ±5V 2.5mV 0.02MΩ - - 55dB - 1 Through Hole PDIP 8 -
RS-stocknr. 522-8685
FabrikantnummerAD626ANZ
FabrikantAnalog Devices
9,52 €
Each
Aantal stuks
Dual, Single 5 V ±5V 2.5mV 0.02MΩ - - 55dB - 1 Through Hole PDIP 8 -
RS-stocknr. 145-6212
FabrikantnummerLT1990CS8#PBF
2,048 €
Each (In a Tube of 100)
Aantal stuks
Dual, Single 2.7 → 36 V ±250V 4.5mV 2MΩ - 105kHz 58dB - 2 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 100-0744
FabrikantnummerINA105KP
6,784 €
Each (In a Tube of 50)
Aantal stuks
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS-stocknr. 709-5077
FabrikantnummerAD8206YRZ
FabrikantAnalog Devices
2,86 €
Each
Aantal stuks
Single 5 V - 2mV 0.4MΩ 26.02dB 100kHz 76dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 162-8618
FabrikantnummerLMP8350MA/NOPB
4,462 €
Each (In a Tube of 95)
Aantal stuks
Single 4.5 → 12 V - ±2.52mV 0.48MΩ 130dB 118MHz - - 1 Surface Mount SOIC 8 No
RS-stocknr. 912-6628
FabrikantnummerAD8206YRZ
FabrikantAnalog Devices
2,058 €
Each (In a Tube of 98)
Aantal stuks
Single 5 V - 2mV 0.4MΩ 26.02dB 100kHz 76dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 779-9561
FabrikantnummerLT1990CS8#PBF
2,86 €
Each (In a Pack of 2)
Aantal stuks
Dual, Single 2.7 → 36 V ±250V 4.5mV 2MΩ - 105kHz 58dB - 2 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 647-659
FabrikantnummerINA105KP
8,12 €
Each
Aantal stuks
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS-stocknr. 786-9720
FabrikantnummerLT6552IS8#PBF
2,86 €
Each (In a Pack of 2)
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Single 3.3 V - 25mV 300kΩ - 55MHz 58dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 824-7070
FabrikantnummerLMP8350MA/NOPB
5,31 €
Each (In a Pack of 2)
Aantal stuks
Single 4.5 → 12 V - ±2.52mV 0.48MΩ 130dB 118MHz - - 1 Surface Mount SOIC 8 No
RS-stocknr. 764-8794
FabrikantnummerADA4932-2YCPZ-R7
FabrikantAnalog Devices
10,46 €
Each
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Dual, Single 3 → 11 V ±5V 2.2mV 11MΩ 66dB 1GHz -100dB - 2 Surface Mount LFCSP VQ 24 -
RS-stocknr. 778-5118
FabrikantnummerAD8476BRMZ
FabrikantAnalog Devices
5,30 €
Each
Aantal stuks
Dual 3 to 18 V ±1.5 to ±9V - 500kΩ 1V/V 6MHz 90dB - 1 Surface Mount MSOP 8 Rail to Rail Output
RS-stocknr. 162-6741
FabrikantnummerTHS4531ID
2,293 €
Each (In a Tube of 75)
Aantal stuks
Single 2.5 → 5.5 V - ±2000µV 200kΩ 114dB 27MHz 90dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 813-6542
FabrikantnummerINA149AID
5,88 €
Each
Aantal stuks
Dual, Single 4 → 36 V ±2 → ±18V 1100µV - 1V/V - 90dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 912-7561
FabrikantnummerAD628ARMZ
FabrikantAnalog Devices
3,479 €
Each (In a Tube of 50)
Aantal stuks
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 3mV 0.22MΩ 40dB - 75dB - 2 Surface Mount MSOP 8 -
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