Differential Amplifiers

A differential amplifier is a type of electronic amplifier that increases the difference between two input voltages. Differential amplifiers also suppress voltage to be common to the two inputs. A digital amplifier is one of the most used and important components within integrated circuits (ICs).

Differential Amplifier 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 will 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, such as 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 also be configured to operate as a 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 do CMRR and PSRR stand for?

  • CMRR is the abbreviated version of Common Mode Rejection Ratio and refers to the power ratio of differential gains between the common-mode gain. This unit is measured in positive decibels.
  • PSRR is the abbreviated version of Power Supply Rejection Ratio and refers to an amplifiers ability to consistently maintain output voltage white the DC voltage supplied is varied.

...
Lees meer Lees minder

Filters

1 - 20 van 67 producten worden weergegeven
Resultaten per pagina
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. 121-8455
FabrikantnummerINA106KP
€ 10,961
Each (In a Tube of 50)
Aantal stuks
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Through Hole PDIP 8 -
RS-stocknr. 647-665
FabrikantnummerINA106KP
€ 12,69
Each
Aantal stuks
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Through Hole PDIP 8 -
RS-stocknr. 100-3829
FabrikantnummerINA145UA
€ 3,739
Each (In a Tube of 75)
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 1mV 0.08MΩ 60dB - 76dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 914-3046
FabrikantnummerTHS4541IRGTT
€ 6,97
Each
Aantal stuks
Single 3 V - 850µV - 119dB 850MHz 85dB - 1 Surface Mount QFN 16 Rail to Rail Output
RS-stocknr. 162-9862
FabrikantnummerTHS4541IRGTT
€ 4,127
Each (On a Reel of 250)
Aantal stuks
Single 3 V - 850µV - 119dB 850MHz 85dB - 1 Surface Mount QFN 16 Rail to Rail Output
RS-stocknr. 162-5292
FabrikantnummerTHS4131IDGN
€ 7,528
Each (In a Tube of 80)
Aantal stuks
Dual, Single 5 V ±15V 2mV 34MΩ 78dB 225MHz 80dB - 1 Surface Mount MSOP 8 -
RS-stocknr. 653-1336
FabrikantnummerTHS4131IDGN
€ 8,76
Each
Aantal stuks
Dual, Single 5 V ±15V 2mV 34MΩ 78dB 225MHz 80dB - 1 Surface Mount MSOP 8 -
RS-stocknr. 378-2777
FabrikantnummerINA145UA
€ 4,43
Each
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 1mV 0.08MΩ 60dB - 76dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 647-659
FabrikantnummerINA105KP
€ 10,56
Each
Aantal stuks
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS-stocknr. 660-5207
FabrikantnummerINA106U
€ 12,51
Each
Aantal stuks
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 162-8363
FabrikantnummerTHS4531AID
€ 2,641
Each (In a Tube of 75)
Aantal stuks
Single 2.5 → 5.5 V - ±2000µV - 113dB 27MHz 90dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS-stocknr. 824-7020
FabrikantnummerLME49724MR/NOPB
€ 2,97
Each (In a Pack of 2)
Aantal stuks
Dual - ±2.5 → ±18V - - - 50MHz - - 1 Surface Mount SOIC 8 -
RS-stocknr. 100-0744
FabrikantnummerINA105KP
€ 8,828
Each (In a Tube of 50)
Aantal stuks
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS-stocknr. 162-5016
FabrikantnummerINA106U
€ 11,015
Each (In a Tube of 75)
Aantal stuks
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 178-8879
FabrikantnummerLME49724MR/NOPB
€ 3,178
Each (In a Tube of 95)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 100-3879
FabrikantnummerTHS4131ID
€ 7,932
Each (In a Tube of 75)
Aantal stuks
Dual, Single 5 V ±15V 2mV 34MΩ 78dB 225MHz 80dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 462-0967
FabrikantnummerTHS4505DGN
€ 5,00
Each
Aantal stuks
Dual, Single 5 V ±5V 7mV 0.025MΩ 54dB 200MHz 74dB - 1 Surface Mount MSOP 8 -
RS-stocknr. 162-5022
FabrikantnummerINA154U
€ 2,705
Each (In a Tube of 75)
Aantal stuks
Dual - ±15V 0.75mV 0.05MΩ 0dB - 80dB - 1 Surface Mount SOIC 8 -
RS-stocknr. 162-9811
FabrikantnummerLMH3401IRMST
€ 11,731
Each (On a Reel of 250)
Aantal stuks
Single 5 V - - 29(Differential) Ω, 55 (Single) Ω 16dB 4 (Small Signal) GHz, 7 (Large Signal) GHz - - 1 Surface Mount UQFN 14 -
RS-stocknr. 162-5520
FabrikantnummerTHS4141CD
€ 4,39
Each (In a Tube of 75)
Aantal stuks
Dual, Single 5 V ±15V 7mV 14.4MΩ 67dB - 75dB - 1 Surface Mount SOIC 8 -