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. 378-2777
Mfr. Part No.INA145UA
TWD112.00
Each
units
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 Stock No. 160-1726
Mfr. Part No.AD8216WYRZ
TWD157.10
Each (In a Tube of 98)
units
Single 4.5 → 5.5 V - ±0.5 (Typical)mV 200 (Common Mode) kΩ, 400 (Differential) kΩ 3 (Typical)V/V 3MHz - - 1 Surface Mount SOIC 8 -
RS Stock No. 806-7903
Mfr. Part No.AD8216WYRZ
TWD170.50
Each (In a Pack of 2)
units
Single 4.5 → 5.5 V - ±0.5 (Typical)mV 200 (Common Mode) kΩ, 400 (Differential) kΩ 3 (Typical)V/V 3MHz - - 1 Surface Mount SOIC 8 -
RS Stock No. 100-3829
Mfr. Part No.INA145UA
TWD106.10
Each (In a Tube of 75)
units
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 Stock No. 159-7869
Mfr. Part No.AD8216YRZ
TWD109.30
Each (In a Tube of 98)
units
Single 5 V - 0.5mV 0.4MΩ 9.54dB - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 709-7070
Mfr. Part No.AD8216YRZ
TWD143.00
Each
units
Single 5 V - 0.5mV 0.4MΩ 9.54dB - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 647-659
Mfr. Part No.INA105KP
TWD328.00
Each
units
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS Stock No. 851-6859
Mfr. Part No.LTC6362IMS8#PBF
TWD150.40
Each (In a Pack of 5)
units
Single 2.8 → 5.25 V - ±30mV 230kΩ 95dB 180MHz 75dB - 1 Surface Mount MSOP 8 Rail to Rail Input/Output
RS Stock No. 806-7935
Mfr. Part No.AD8274ARZ
TWD96.00
Each (In a Pack of 2)
units
Dual - ±2.5 → ±18V 1100µV - - 20MHz 83dB - 1 Surface Mount SOIC 8 -
RS Stock No. 160-1733
Mfr. Part No.AD8274ARZ
TWD73.70
Each (In a Tube of 98)
units
Dual - ±2.5 → ±18V 1100µV - - 20MHz 83dB - 1 Surface Mount SOIC 8 -
RS Stock No. 100-0744
Mfr. Part No.INA105KP
TWD274.10
Each (In a Tube of 50)
units
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS Stock No. 145-1135
Mfr. Part No.LTC1992CMS8#PBF
TWD102.40
Each (In a Tube of 50)
units
Dual, Single 2.7 → 11 V ±1.35 → ±5V ±2.5mV 500MΩ 80dB 3MHz - - 1 Surface Mount MSOP 8 Rail to Rail Output
RS Stock No. 806-7947
Mfr. Part No.AD8278ARZ
TWD100.00
Each (In a Pack of 2)
units
Dual, Single 2 → 36 V ±2 → ±18V - - - - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 661-2397
Mfr. Part No.INA159AIDGKT
TWD160.00
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. 451-5196
Mfr. Part No.INA148UA
TWD205.00
Each
units
Dual, Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 5mV 2MΩ 0dB - 70dB - 1 Surface Mount SOIC 8 -
RS Stock No. 912-7362
Mfr. Part No.AMP03GPZ
TWD258.70
Each (In a Tube of 50)
units
Dual - ±6 → ± 18V 0.75mV - - - 80dB - 1 Through Hole PDIP 8 -
RS Stock No. 912-6237
Mfr. Part No.AD8275ARMZ
TWD112.80
Each (In a Tube of 50)
units
Dual, Single 5 V ±3 V, ±5 V - 0.108MΩ 13.98dB - 80dB - 1 Surface Mount MSOP 8 Rail to Rail Output
RS Stock No. 522-8455
Mfr. Part No.AMP03GPZ
TWD325.00
Each
units
Dual - ±6 → ± 18V 0.75mV - - - 80dB - 1 Through Hole PDIP 8 -
RS Stock No. 759-0055
Mfr. Part No.AD8277ARZ
TWD147.00
Each
units
Dual, Single 2 → 36 V ±2 → ±18V 0.5mV 0.08MΩ - 550kHz 80dB - 2 Surface Mount SOIC 14 Rail to Rail Output
RS Stock No. 796-9151
Mfr. Part No.AD8476BCPZ-WP
TWD215.00
Each
units
Dual, Single 3 → 18 V ±1.5 → ±9V 200µV - - 6MHz 90dB - 1 Surface Mount LFCSP 16 Rail to Rail Output