Differential Line Drivers

Differential line drivers are electrical devices that convey analogue signals, audio or otherwise, across distances with minimal noise pick up.

How do differential line drivers work?

Information in differential line drivers is transmitted using two complementary signals. They send the same electrical signal as two different signals, each on a conductor of its own.The conductors can either be traces on a circuit board or wires that are twisted together.

The voltage between the two signals and not the difference between a single wire and earth (a common return path for electric current), prompts a response by the receiving circuit. Differential line drivers resist electromagnetic noise once the difference between wires has been detected by the receiving circuit.

What are differential line drivers used for?

Differential line drivers are utilised in balanced audio circuitry and digital signalling. They are used to reduce electromagnetic noise in applications such as portable and mobile devices where reducing the supply voltage results in reduced noise immunity, and in computers to reduce electromagnetic interference.

They can be built preferably around differential amplifiers fitted with high-speed, high-output current buffers inside the feedback loop.


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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 Number of Channels per Chip Mounting Type Package Type Pin Count Rail to Rail Maximum Supply Current
RS Stock No. 162-6488
Mfr. Part No.AM26LV31EIDR
HK$5.912
Each (On a Reel of 2500)
units
Single 3.3 V - - - - 32MHz - 4 Surface Mount SOIC 16 - 10 μA
RS Stock No. 145-6032
Mfr. Part No.AM26C31QD
HK$14.97
Each (In a Tube of 40)
units
Single 5 V - - - - - - 4 Surface Mount SOIC 16 - ±0.001 mA
RS Stock No. 809-6150
Mfr. Part No.AM26LV31EIDR
HK$13.35
Each (In a Pack of 5)
units
Single 3.3 V - - - - 32MHz - 4 Surface Mount SOIC 16 - 10 μA
RS Stock No. 162-6404
Mfr. Part No.SN75113N
HK$22.639
Each (In a Tube of 25)
units
Single 5 V - - - - - - - Through Hole PDIP 16 - 85 mA
RS Stock No. 661-2444
Mfr. Part No.DRV134UA
HK$50.50
Each
units
Dual - ±18V - 0.01MΩ 6dB - 46dB 1 Surface Mount SOIC 16 No -
RS Stock No. 732-0774
Mfr. Part No.SN75ALS191P
HK$19.42
Each (In a Pack of 5)
units
Single 5 V - - - - - - 2 Through Hole PDIP 8 - 50 mA
RS Stock No. 121-9133
Mfr. Part No.DRV134UA
HK$44.07
Each (In a Tube of 40)
units
Dual - ±18V - 0.01MΩ 6dB - 46dB 1 Surface Mount SOIC 16 - -
RS Stock No. 162-6405
Mfr. Part No.SN75ALS191P
HK$16.52
Each (In a Tube of 50)
units
Single 5 V - - - - - - 2 Through Hole PDIP 8 - 50 mA
RS Stock No. 810-0155
Mfr. Part No.SN75110AN
HK$7.70
Each (In a Pack of 25)
units
- - - - - - - - 1 Through Hole PDIP 14 - -
RS Stock No. 732-0752
Mfr. Part No.AM26C31QD
HK$17.71
Each (In a Pack of 5)
units
Single 5 V - - - - - - 4 Surface Mount SOIC 16 - ±0.001 mA
RS Stock No. 732-1010
Mfr. Part No.SN75113N
HK$28.03
Each
units
Single 5 V - - - - - - - Through Hole PDIP 16 - 85 mA