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. 786-3362
FabrikantnummerAD8476ARMZ
FabrikantAnalog Devices
€ 4,64
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Aantal stuks
Dual 3 → 18 V ±1.5 → ±9V 900µV - 1V/V 6MHz - - 1 Surface Mount MSOP 8 Rail to Rail Output
RS-stocknr. 121-8455
FabrikantnummerINA106KP
€ 9,303
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Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Through Hole PDIP 8 -
RS-stocknr. 647-665
FabrikantnummerINA106KP
€ 10,47
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Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Through Hole PDIP 8 -
RS-stocknr. 145-6212
FabrikantnummerLT1990CS8#PBF
FabrikantAnalog Devices
€ 1,747
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Dual, Single 2.7 → 36 V ±250V 4.5mV 2MΩ - 105kHz 58dB - 2 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 779-9561
FabrikantnummerLT1990CS8#PBF
FabrikantAnalog Devices
€ 2,86
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Dual, Single 2.7 → 36 V ±250V 4.5mV 2MΩ - 105kHz 58dB - 2 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 912-8810
FabrikantnummerAD8139ARDZ
FabrikantAnalog Devices
€ 5,94
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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-stocknr. 496-7171
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FabrikantAnalog Devices
€ 7,46
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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-stocknr. 912-7684
FabrikantnummerAD598JRZ
FabrikantAnalog Devices
€ 38,334
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- - - - - - - - - - Surface Mount SOIC W 20 -
RS-stocknr. 697-6953
FabrikantnummerAD598JRZ
FabrikantAnalog Devices
€ 42,86
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- - - - - - - - - - Surface Mount SOIC W 20 -
RS-stocknr. 851-6859
FabrikantnummerLTC6362IMS8#PBF
€ 3,586
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Single 2.8 → 5.25 V - ±30mV 230kΩ 95dB 180MHz 75dB - 1 Surface Mount MSOP 8 Rail to Rail Input/Output
RS-stocknr. 912-6145
FabrikantnummerAD698APZ
FabrikantAnalog Devices
€ 29,634
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- 17.5 V 13V - - - - - - - Surface Mount PLCC 28 -
RS-stocknr. 697-6988
FabrikantnummerAD698APZ
FabrikantAnalog Devices
€ 33,14
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- 17.5 V 13V - - - - - - - Surface Mount PLCC 28 -
RS-stocknr. 806-7947
FabrikantnummerAD8278ARZ
FabrikantAnalog Devices
€ 2,435
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Dual, Single 2 → 36 V ±2 → ±18V - - - - 80dB - 1 Surface Mount SOIC 8 -
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€ 6,932
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Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS-stocknr. 162-5551
FabrikantnummerTL592B-8D
€ 1,261
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Dual - ±6V - 0.004MΩ - - 60dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 145-7818
FabrikantnummerAD626BNZ
FabrikantAnalog Devices
€ 12,063
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Dual, Single 2.4 → 10 V ±1.2 → ±6V 500µV 200kΩ - 100kHz 55dB - 1 Through Hole PDIP 8 -
RS-stocknr. 523-0199
FabrikantnummerAD626ARZ
FabrikantAnalog Devices
€ 8,35
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Dual, Single 5 V ±5V 2.5mV 0.02MΩ - - 55dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 162-8363
FabrikantnummerTHS4531AID
€ 2,641
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Single 2.5 → 5.5 V - ±2000µV - 113dB 27MHz 90dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 912-8845
FabrikantnummerAD628ARZ
FabrikantAnalog Devices
€ 3,579
Each (In a Tube of 98)
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 SOIC 8 -
RS-stocknr. 912-7387
FabrikantnummerAD626ARZ
FabrikantAnalog Devices
€ 6,63
Each (In a Tube of 98)
Aantal stuks
Dual, Single 5 V ±5V 2.5mV 0.02MΩ - - 55dB - 1 Surface Mount SOIC 8 -
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