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-invertingWhy 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 convertersA 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 ratioPSSR – Power supply rejection ratio

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Description Price 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 Stock No. 538-8434
Mfr. Part No.AD8205YRZ
£2.616
Each (In a Pack of 5)
Units
Single 5 V - 2mV 0.4MΩ 33.98dB - 76dB - 1 Surface Mount SOIC 8 -
RS Stock No. 912-7684
Mfr. Part No.AD598JRZ
£33.369
Each (In a Tube of 37)
Units
- - - - - - - - - - Surface Mount SOIC W 20 -
RS Stock No. 496-7171
Mfr. Part No.AD8139ARDZ
£6.78
Each
Units
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 Stock No. 697-6953
Mfr. Part No.AD598JRZ
£37.02
Each
Units
- - - - - - - - - - Surface Mount SOIC W 20 -
RS Stock No. 912-8810
Mfr. Part No.AD8139ARDZ
£5.13
Each (In a Tube of 98)
Units
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 Stock No. 912-6312
Mfr. Part No.ADA4932-1YCPZ-R2
£4.469
Each (On a Reel of 250)
Units
Dual, Single 5 V, 9 V ±3 V, ±5 V 2.2mV 16MΩ 66dB - 87dB - 1 Surface Mount LFCSP 16 -
RS Stock No. 100-0768
Mfr. Part No.INA117KU
£5.396
Each (In a Tube of 75)
Units
Dual - ±15V 2mV 0.8MΩ 0dB - 66dB - 1 Surface Mount SOIC 8 -
RS Stock No. 155-7739
Mfr. Part No.LTC6409CUDB#TRMPBF
£5.356
Each (On a Reel of 500)
Units
Single 2.7 5.25 V - ±1400µV 165 (Common Mode) kΩ, 860 (Differential Mode) Ω 65dB 10GHz - - 1 Surface Mount QFN 10 -
RS Stock No. 764-8794
Mfr. Part No.ADA4932-2YCPZ-R7
£5.90
Each
Units
Dual, Single 3 → 11 V ±5V 2.2mV 11MΩ 66dB 1GHz -100dB - 2 Surface Mount LFCSP VQ 24 -
RS Stock No. 823-0041
Mfr. Part No.LTC6409CUDB#TRMPBF
£8.24
Each
Units
Single 2.7 5.25 V - ±1400µV 165 (Common Mode) kΩ, 860 (Differential Mode) Ω 65dB 10GHz - - 1 Surface Mount QFN 10 -
RS Stock No. 159-9267
Mfr. Part No.ADA4932-2YCPZ-R7
£5.802
Each (On a Reel of 1500)
Units
Dual, Single 3 → 11 V ±5V 2.2mV 11MΩ 66dB 1GHz -100dB - 2 Surface Mount LFCSP VQ 24 -
RS Stock No. 218-8382
Mfr. Part No.INA117KU
£6.45
Each
Units
Dual - ±15V 2mV 0.8MΩ 0dB - 66dB - 1 Surface Mount SOIC 8 -
RS Stock No. 697-7521
Mfr. Part No.ADA4932-1YCPZ-R2
£6.35
Each
Units
Dual, Single 5 V, 9 V ±3 V, ±5 V 2.2mV 16MΩ 66dB - 87dB - 1 Surface Mount LFCSP 16 -
RS Stock No. 819-7310
Mfr. Part No.AD626BNZ
£12.69
Each
Units
Dual, Single 2.4 → 10 V ±1.2 → ±6V 500µV 200kΩ - 100kHz 55dB - 1 Through Hole PDIP 8 -
RS Stock No. 160-1735
Mfr. Part No.AD8278ARZ
£1.811
Each (In a Tube of 98)
Units
Dual, Single 2 → 36 V ±2 → ±18V - - - - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 538-6595
Mfr. Part No.AD628ARMZ
£4.04
Each
Units
Dual, Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 3mV 0.22MΩ 40dB - 75dB - 2 Surface Mount MSOP 8 -
RS Stock No. 145-7818
Mfr. Part No.AD626BNZ
£10.418
Each (In a Tube of 50)
Units
Dual, Single 2.4 → 10 V ±1.2 → ±6V 500µV 200kΩ - 100kHz 55dB - 1 Through Hole PDIP 8 -
RS Stock No. 806-7947
Mfr. Part No.AD8278ARZ
£2.07
Each (In a Pack of 2)
Units
Dual, Single 2 → 36 V ±2 → ±18V - - - - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 759-0046
Mfr. Part No.AD8276BRMZ
£2.90
Each
Units
Dual, Single 2 → 36 V ±2 → ±18V 0.5mV 0.08MΩ - 550kHz 80dB - 1 Through Hole MSOP 8 Rail to Rail Output
RS Stock No. 160-1734
Mfr. Part No.AD8278ARMZ
£1.793
Each (In a Tube of 50)
Units
Dual, Single 2 → 36 V ±2 → ±18V 500µV 120 (Differential) kΩ, 30 (Common Mode) kΩ - 1MHz 74dB - 1 Surface Mount MSOP 8 -
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Differential Amplifiers are operational amplifiers configured to amplify ...
Description:
Differential Amplifiers are operational amplifiers configured to amplify differential input signals but to supress or reject common-mode signals; they incorporate on-chip resistors to define the differential gain.