Device and method for controllably delaying electrical signals

A device for controllably delaying an electrical signal, the device comprising:

• a first signal transfer path between a signal input and a signal output, the first signal transfer path comprising
• a first signal transfer stage with a first differential pair and a common, adjustable first quiescent current source,
• a second signal transfer path between the signal input and the signal output, the second signal transfer path comprising
• a second signal transfer stage with a second differential pair and a common, adjustable second quiescent current source, and
• an internal delay stage, arranged between the signal input and the second signal transfer stage and having a third differential pair and a common, adjustable third quiescent current source, and
• a signal combination stage for additively superimposing the electrical signal transferred via the first signal transfer path on to the electrical signal transferred via the second signal transfer path,
• further comprising a first current modulation stage, a second current modulation stage, and a third current modulation stage, at least one of the first or second or third current modulation stage configured for adjusting the quiescent current of at least one of the first or second or third quiescent current source,
• wherein the first or second or third current modulation stage is respectively provided with
• a first difference stage and an adjustable first current modulation quiescent current source common to the first difference stage, and
• a second difference stage and an adjustable second current modulation quiescent current source common to the second difference stage, wherein
• the first difference stage is providable with, as a first control signal, a discretized signal for frequency increase, and
• the second difference stage is providable with, as a second control signal, a discretized signal for frequency reduction, and
• the first and the second current modulation quiescent current source of each current modulation stage are commonly adjustable.