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. 159-7869
Mfr. Part No.AD8216YRZ
HK$32.084
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
HK$37.81
Each
units
Single 5 V - 0.5mV 0.4MΩ 9.54dB - 80dB - 1 Surface Mount SOIC 8 -
RS Stock No. 160-1726
Mfr. Part No.AD8216WYRZ
HK$36.20
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
HK$43.47
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. 759-1297
Mfr. Part No.AD8276ARZ
HK$24.06
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. 761-8582
Mfr. Part No.LT1994CMS8#PBF
HK$33.06
Each
units
Single 3 V - ±3mV .0045MΩ 100dB 70MHz 55dB - 2 Surface Mount MSOP 8 Rail to Rail Input/Output
RS Stock No. 807-1665
Mfr. Part No.ADA4927-1YCPZ-R2
HK$98.54
Each
units
Dual, Single 5 V ±5V 5.2mV 7.5kΩ 1V/V 2GHz -70dB - 1 Surface Mount LFCSP 16 -
RS Stock No. 912-9945
Mfr. Part No.AD8476BRMZ
HK$48.039
Each (In a Tube of 50)
units
Dual 3 → 18 V ±1.5 → ±9V - 500kΩ 1V/V 6MHz 90dB - 1 Surface Mount MSOP 8 Rail to Rail Output
RS Stock No. 121-6909
Mfr. Part No.ADA4927-1YCPZ-R2
HK$59.176
Each (On a Reel of 250)
units
Dual, Single 5 V ±5V 5.2mV 7.5kΩ 1V/V 2GHz -70dB - 1 Surface Mount LFCSP 16 -
RS Stock No. 778-5118
Mfr. Part No.AD8476BRMZ
HK$57.64
Each
units
Dual 3 to 18 V ±1.5 to ±9V - 500kΩ 1V/V 6MHz 90dB - 1 Surface Mount MSOP 8 Rail to Rail Output
RS Stock No. 822-5783
Mfr. Part No.LTC6406IUD#PBF
HK$62.34
Each
units
Single 2.7 → 3.5 V - ±5mV 3 (Differential Mode) kΩ, 130 (Common Mode) kΩ 90dB 3GHz - - 1 Surface Mount QFN 16 Rail to Rail Input
RS Stock No. 159-8584
Mfr. Part No.ADA4960-1ACPZ-R7
HK$92.078
Each (On a Reel of 1500)
units
Single 5 V - - 10kΩ 18dB 5GHz 60dB - 1 Surface Mount LFCSP WQ 16 -
RS Stock No. 912-8970
Mfr. Part No.AD8132ARZ
HK$33.846
Each (In a Tube of 98)
units
Dual, Single 3 V, 5 V, 9 V ±3 V, ±5 V 3.5mV 3MΩ 0.129dB - - - 1 Surface Mount SOIC 8 -
RS Stock No. 153-3156
Mfr. Part No.AD8390AACPZ-R7
HK$15.834
Each (On a Reel of 1500)
units
Dual, Single - - +3V - - 45MHz 58dB Differential 2 Surface Mount LFCSP 16 No
RS Stock No. 160-1734
Mfr. Part No.AD8278ARMZ
HK$21.156
Each (In a Tube of 50)
units
Dual, Single 2 → 36 V ±2 → ±18V 500µV 30 (Common Mode) kΩ, 120 (Differential) kΩ - 1MHz 74dB - 1 Surface Mount MSOP 8 -
RS Stock No. 183-1764
Mfr. Part No.AD8475BRMZ
HK$46.952
Each (In a Tube of 50)
units
Dual, Single 3 → 10 V ±1.5 to ±5V - 1.75kΩ - 150MHz 86dB Differential 1 Surface Mount MSOP 10 Rail to Rail Input/Output
RS Stock No. 160-2822
Mfr. Part No.AD8137YCPZ-R2
HK$29.293
Each (On a Reel of 250)
units
Dual, Single 12 V ±6V 2.75mV 800kΩ 91dB 110MHz 62dB - 1 Surface Mount LFCSP 8 Rail to Rail Output
RS Stock No. 145-7818
Mfr. Part No.AD626BNZ
HK$114.703
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. 497-0032
Mfr. Part No.AD628ARZ
HK$49.01
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 3mV 0.22MΩ 40dB - 75dB - 2 Surface Mount SOIC 8 -
RS Stock No. 912-9936
Mfr. Part No.ADA4940-2ACPZ-R7
HK$38.277
Each (On a Reel of 1500)
units
Single 5 V - 0.35mV 33kΩ 99dB 260MHz 86dB - 2 Surface Mount LFCSP VQ 24 Rail to Rail Output