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. 661-2397
Mfr. Part No.INA159AIDGKT
MYR18.73
Each
units
Single 3 V, 5 V - 0.5mV 0.24MΩ 13.98dB - 80dB - 1 Surface Mount MSOP 8 Rail to Rail Input
RS Stock No. 912-6628
Mfr. Part No.AD8206YRZ
MYR11.261
Each (In a Tube of 98)
units
Single 5 V - 2mV 0.4MΩ 26.02dB 100kHz 76dB - 1 Surface Mount SOIC 8 -
RS Stock No. 145-6212
Mfr. Part No.LT1990CS8#PBF
MYR9.786
Each (In a Tube of 100)
units
Dual, Single 2.7 → 36 V ±250V 4.5mV 2MΩ - 105kHz 58dB - 2 Surface Mount SOIC 8 Rail to Rail Output
RS Stock No. 823-0041
Mfr. Part No.LTC6409CUDB#TRMPBF
MYR46.88
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. 809-9288
Mfr. Part No.AD8207WBRZ
MYR21.27
Each
units
Single 3.3 → 5.5 V - 100µV - 20V/V 150kHz 80dB - 1 Surface Mount SOIC 8 No
RS Stock No. 709-6070
Mfr. Part No.AD629BNZ
MYR64.70
Each
units
Dual - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 0.5mV 0.8MΩ 0dB - 86dB - 1 Through Hole PDIP 8 -
RS Stock No. 660-5308
Mfr. Part No.INA154UA
MYR11.12
Each
units
Dual - ±15V 1.5mV 0.05MΩ 0dB - 74dB - 1 Surface Mount SOIC 8 -
RS Stock No. 412-450
Mfr. Part No.AMP03GSZ
MYR28.88
Each
units
Dual - - 0.75mV - - - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 159-7876
Mfr. Part No.AD8350ARMZ20
MYR20.65
Each (In a Tube of 50)
units
Single 5 V, 9 V - 1mV 0.0002MΩ 21dB - - - 1 Surface Mount MSOP 8 -
RS Stock No. 161-0129
Mfr. Part No.AMP03GSZ
MYR22.981
Each (In a Tube of 98)
units
Dual - - 0.75mV - - - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 912-7362
Mfr. Part No.AMP03GPZ
MYR32.528
Each (In a Tube of 50)
units
Dual - ±6 → ± 18V 0.75mV - - - 80dB - 1 Through Hole PDIP 8 -
RS Stock No. 819-7310
Mfr. Part No.AD626BNZ
MYR65.96
Each
units
Dual, Single 2.4 → 10 V ±1.2 → ±6V 500µV 200kΩ - 100kHz 55dB - 1 Through Hole PDIP 8 -