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. 100-3879
Mfr. Part No.THS4131ID
PHP322.70
Each (In a Tube of 75)
units
Dual, Single 5 V ±15V 2mV 34MΩ 78dB 225MHz 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 162-6741
Mfr. Part No.THS4531ID
PHP126.991
Each (In a Tube of 75)
units
Single 2.5 → 5.5 V - ±2000µV 200kΩ 114dB 27MHz 90dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS Stock No. 159-7869
Mfr. Part No.AD8216YRZ
PHP173.328
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. 759-1291
Mfr. Part No.AD8276BRZ
PHP200.03
Each
units
Dual, Single 2 → 36 V ±2 → ±18V 0.5mV 0.08MΩ - 550kHz 80dB - 1 Surface Mount SOIC 8 Rail to Rail Output
RS Stock No. 697-7521
Mfr. Part No.ADA4932-1YCPZ-R2
PHP485.71
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. 162-5520
Mfr. Part No.THS4141CD
PHP439.43
Each (In a Tube of 75)
units
Dual, Single 5 V ±15V 7mV 14.4MΩ 67dB - 75dB - 1 Surface Mount SOIC 8 -
RS Stock No. 153-3196
Mfr. Part No.AD8390AACPZ-R7
PHP154.50
Each (In a Pack of 2)
units
Dual, Single - - +3V - - 45MHz 58dB Differential 2 Surface Mount LFCSP 16 No
RS Stock No. 497-3700
Mfr. Part No.AD8132ARZ
PHP217.53
Each
units
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 3.5mV 3MΩ 0.129dB - - - 1 Surface Mount SOIC 8 -
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Linear Technology's differential amplifier is an operational amplifier ...
Description:
Linear Technology's differential amplifier is an operational amplifier (Op Amp) that amplifies the difference between two voltages. Some features include rail to rail output, precision film resistors, low noise and integrated filters.