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. 517-0356
Mfr. Part No.THS4509RGTT
PHP442.05
Each
units
Dual, Single 5 V ±2.5V 4mV 0.05MΩ 68dB 3GHz - - 1 Surface Mount QFN 16 -
RS Stock No. 100-3829
Mfr. Part No.INA145UA
PHP169.467
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. 806-7947
Mfr. Part No.AD8278ARZ
PHP129.81
Each (In a Pack of 2)
units
Dual, Single 2 → 36 V ±2 → ±18V - - - - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 252-1644
Mfr. Part No.INA132UA
PHP214.33
Each
units
Dual, Single 5 V ±15V 0.75mV 0.08MΩ 0dB - 70dB - 1 Surface Mount SOIC 8 -
RS Stock No. 912-7684
Mfr. Part No.AD598JRZ
PHP2,212.561
Each (In a Tube of 37)
units
- - - - - - - - - - Surface Mount SOIC W 20 -
RS Stock No. 660-5207
Mfr. Part No.INA106U
PHP609.86
Each
units
Dual - ±15V 0.5mV 0.11MΩ 20dB - 86dB - 1 Surface Mount SOIC 8 -
RS Stock No. 145-6432
Mfr. Part No.AD8271BRMZ
PHP207.564
Each (In a Tube of 50)
units
Dual - ±2.5 → ±18V 1000µV 1GΩ - 20MHz 80dB - 1 Surface Mount MSOP 10 Rail to Rail Input
RS Stock No. 709-7060
Mfr. Part No.AD8203YRMZ
PHP197.05
Each
units
Single 5 V - 2mV 0.38MΩ - 60kHz 80dB - 2 Surface Mount MSOP 8 Rail to Rail Output
RS Stock No. 759-0046
Mfr. Part No.AD8276BRMZ
PHP200.03
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. 660-5308
Mfr. Part No.INA154UA
PHP142.80
Each
units
Dual - ±15V 1.5mV 0.05MΩ 0dB - 74dB - 1 Surface Mount SOIC 8 -
RS Stock No. 661-2517
Mfr. Part No.THS4130CDGN
PHP466.73
Each
units
Dual, Single 5 V ±15V 2mV 34MΩ 78dB 225MHz 80dB - 1 Surface Mount MSOP 8 -
RS Stock No. 153-3156
Mfr. Part No.AD8390AACPZ-R7
PHP97.078
Each (On a Reel of 1500)
units
Dual, Single - - +3V - - 45MHz 58dB Differential 2 Surface Mount LFCSP 16 No
RS Stock No. 100-0744
Mfr. Part No.INA105KP
PHP384.258
Each (In a Tube of 50)
units
Dual - ±15V 0.5mV 0.05MΩ 0dB - 72dB - 1 Through Hole PDIP 8 -
RS Stock No. 162-5022
Mfr. Part No.INA154U
PHP179.03
Each (In a Tube of 75)
units
Dual - ±15V 0.75mV 0.05MΩ 0dB - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 162-5517
Mfr. Part No.THS4130CD
PHP372.23
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. 822-5783
Mfr. Part No.LTC6406IUD#PBF
PHP448.87
Each
units
Single 2.7 → 3.5 V - ±5mV 130 (Common Mode) kΩ, 3 (Differential Mode) kΩ 90dB 3GHz - - 1 Surface Mount QFN 16 Rail to Rail Input
RS Stock No. 914-2982
Mfr. Part No.LMH3401IRMST
PHP813.58
Each
units
Single 5 V - - 29(Differential) Ω, 55 (Single) Ω 16dB 4 (Small Signal) GHz, 7 (Large Signal) GHz - - 1 Surface Mount UQFN 14 -
RS Stock No. 162-5026
Mfr. Part No.INA157U
PHP178.638
Each (In a Tube of 75)
units
Dual - ±15V 0.5mV 0.024MΩ 6.02dB - 86dB - 1 Surface Mount SOIC 8 -
RS Stock No. 100-3838
Mfr. Part No.INA148UA
PHP261.98
Each (In a Tube of 75)
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. 820-9454
Mfr. Part No.AD8274ARMZ
PHP93.738
Each (In a Pack of 5)
units
Dual - ±2.5 → ±18V 1100µV 9kΩ - 10MHz 83dB - 1 Surface Mount MSOP 8 -
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